pg.ddx.io pgsql-hackers@postgresql.org mailing list archive help / color / mirror / Atom feed From: Nikita Glukhov <n.gluhov@postgrespro.ru>
To: Oleg Bartunov <obartunov@postgrespro.ru>
To: Alexander Korotkov <a.korotkov@postgrespro.ru>
Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>
Cc: Michael Paquier <michael@paquier.xyz>
Cc: Stas Kelvich <s.kelvich@postgrespro.ru>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Cc: Thomas Munro <thomas.munro@enterprisedb.com>
Cc: David Steele <david@pgmasters.net>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Andrew Dunstan <andrew.dunstan@2ndquadrant.com>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: Pavel Stehule <pavel.stehule@gmail.com>
Subject: Re: jsonpath
Date: Wed, 23 Jan 2019 03:41:21 +0300
Message-ID: <264a6413-7175-9680-b976-d50392c001c0@postgrespro.ru> (raw )
In-Reply-To: <CAF4Au4zTZ18j_7Q4VeiJvJ3egJkEQtu7MfgU_ADp5pYVbdnkpA@mail.gmail.com >
References: <CAA8=A796mY7kJdKARt7B+faW70-c8mRh+Ff_joBJ+NyCFLv3Gg@mail.gmail.com >
<43e52ed7-9c21-db2c-693a-9245f9e8ce2a@2ndquadrant.com >
<38018365-5793-2827-e3c1-5a3b259fb6ae@postgrespro.ru >
<CAPpHfdvVyXsD1gSwVB7A2C07Mx_6XZOOpEBqO_Le11mYJyq8YQ@mail.gmail.com >
<885de241-5a51-29c8-a6b3-f1dda22aba13@postgrespro.ru >
<CAPpHfdsA09V3s5Q6gtCgYMmyQPOFAj7=Ez1bb7Q0eriFjJugkQ@mail.gmail.com >
<dea8e62f-001d-671f-e3ad-8a7f9cf318d0@2ndquadrant.com >
<CAPpHfdtYvffCJfChnFMcOOP6O0RgJVkXy1-_1=teFc8aRJUY7g@mail.gmail.com >
<CAPpHfdtq0b_g9MmDPpAOFkxXSH93TrJCkxNc5EmJktUJ0tuZtA@mail.gmail.com >
<CAPpHfdtcO+VCoKTMpSUL9LVzqHv7uthi-jAdzYTxaHc1+h6fVQ@mail.gmail.com >
<CAPpHfdsd77VeSwrNhaf8FMUUjABqYWKaJUr+ch-0gxMObV02Hg@mail.gmail.com >
<CAF4Au4x8wELTcwu0XS9nSZwNfJEFitNjU=_M=1WzHtdBPkwVpw@mail.gmail.com >
<CAPpHfdtQP7th_ui9gV3ih4mDCP2kfdw6sJ2YZY4WwPvp1NQEUA@mail.gmail.com >
<CAPpHfdv2bro1224314aRijKJu1bfwEimKr6hExoOaF4sqSDTQA@mail.gmail.com >
<CAF4Au4zTZ18j_7Q4VeiJvJ3egJkEQtu7MfgU_ADp5pYVbdnkpA@mail.gmail.com >
Attached 26th version of the patches:
* Documentation:
- Fixed some mistakes
- Removed mention of syntax extensions not present in this patch
- Documented '.datetime(format, default_tz)'
* Removed accidental syntax extension allowing to write '@.key' without '@'
--
Nikita Glukhov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
Attachments:
[text/x-patch] 0001-Preliminary-datetime-infrastructure-v26.patch (33.1K, ../264a6413-7175-9680-b976-d50392c001c0@postgrespro.ru/3-0001-Preliminary-datetime-infrastructure-v26.patch)
download | inline diff:
From f9d37b576ed892eb76a15289cab540682c7973f2 Mon Sep 17 00:00:00 2001
From: Nikita Glukhov <n.gluhov@postgrespro.ru>
Date: Wed, 23 Jan 2019 03:21:45 +0300
Subject: [PATCH 01/14] Improve datetime conversion infrastructure for upcoming
jsonpath
Jsonpath language (part of SQL/JSON standard) includes functions for datetime
conversion. In order to support that, we have to extend our infrastructure
in following ways.
1. FF1-FF6 format patterns implementing different fractions of second. FF3
and FF6 are effectively just synonyms for MS and US. But other fractions
were not implemented yet.
2. to_datetime() internal function, which dynamically determines result
datatype depending on format string.
3. Strict parsing mode, which doesn't allow trailing spaces and unmatched
format patterns.
The first improvement is already user-visible and can use used in datetime
parsing/printing functions. Other improvements are internal, they will be
user-visible together with jsonpath.
Code was written by Nikita Glukhov and Teodor Sigaev, revised by me.
Documentation was written by Oleg Bartunov and Liudmila Mantrova. The work
was inspired by Oleg Bartunov and Teodor Sigaev.
Discussion: https://postgr.es/m/fcc6fc6a-b497-f39a-923d-aa34d0c588e8%402ndQuadrant.com
Author: Nikita Glukhov, Teodor Sigaev, Alexander Korotkov, Oleg Bartunov, Liudmila Mantrova
Reviewed-by: Andrew Dunstan, Pavel Stehule, Tomas Vondra, Alexander Korotkov
---
doc/src/sgml/func.sgml | 24 ++
src/backend/utils/adt/date.c | 11 +-
src/backend/utils/adt/formatting.c | 408 ++++++++++++++++++++++++++++--
src/backend/utils/adt/timestamp.c | 3 +-
src/include/utils/date.h | 3 +
src/include/utils/datetime.h | 2 +
src/include/utils/formatting.h | 3 +
src/test/regress/expected/horology.out | 79 ++++++
src/test/regress/expected/timestamp.out | 15 ++
src/test/regress/expected/timestamptz.out | 15 ++
src/test/regress/sql/horology.sql | 9 +
src/test/regress/sql/timestamp.sql | 8 +
src/test/regress/sql/timestamptz.sql | 8 +
13 files changed, 554 insertions(+), 34 deletions(-)
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 4930ec1..6f5baef 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -5994,6 +5994,30 @@ SELECT regexp_match('abc01234xyz', '(?:(.*?)(\d+)(.*)){1,1}');
<entry>microsecond (000000-999999)</entry>
</row>
<row>
+ <entry><literal>FF1</literal></entry>
+ <entry>decisecond (0-9)</entry>
+ </row>
+ <row>
+ <entry><literal>FF2</literal></entry>
+ <entry>centisecond (00-99)</entry>
+ </row>
+ <row>
+ <entry><literal>FF3</literal></entry>
+ <entry>millisecond (000-999)</entry>
+ </row>
+ <row>
+ <entry><literal>FF4</literal></entry>
+ <entry>tenth of a millisecond (0000-9999)</entry>
+ </row>
+ <row>
+ <entry><literal>FF5</literal></entry>
+ <entry>hundredth of a millisecond (00000-99999)</entry>
+ </row>
+ <row>
+ <entry><literal>FF6</literal></entry>
+ <entry>microsecond (000000-999999)</entry>
+ </row>
+ <row>
<entry><literal>SSSS</literal></entry>
<entry>seconds past midnight (0-86399)</entry>
</row>
diff --git a/src/backend/utils/adt/date.c b/src/backend/utils/adt/date.c
index 3810e4a..dfe4453 100644
--- a/src/backend/utils/adt/date.c
+++ b/src/backend/utils/adt/date.c
@@ -40,11 +40,6 @@
#endif
-static int tm2time(struct pg_tm *tm, fsec_t fsec, TimeADT *result);
-static int tm2timetz(struct pg_tm *tm, fsec_t fsec, int tz, TimeTzADT *result);
-static void AdjustTimeForTypmod(TimeADT *time, int32 typmod);
-
-
/* common code for timetypmodin and timetztypmodin */
static int32
anytime_typmodin(bool istz, ArrayType *ta)
@@ -1210,7 +1205,7 @@ time_in(PG_FUNCTION_ARGS)
/* tm2time()
* Convert a tm structure to a time data type.
*/
-static int
+int
tm2time(struct pg_tm *tm, fsec_t fsec, TimeADT *result)
{
*result = ((((tm->tm_hour * MINS_PER_HOUR + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec)
@@ -1376,7 +1371,7 @@ time_scale(PG_FUNCTION_ARGS)
* have a fundamental tie together but rather a coincidence of
* implementation. - thomas
*/
-static void
+void
AdjustTimeForTypmod(TimeADT *time, int32 typmod)
{
static const int64 TimeScales[MAX_TIME_PRECISION + 1] = {
@@ -1954,7 +1949,7 @@ time_part(PG_FUNCTION_ARGS)
/* tm2timetz()
* Convert a tm structure to a time data type.
*/
-static int
+int
tm2timetz(struct pg_tm *tm, fsec_t fsec, int tz, TimeTzADT *result)
{
result->time = ((((tm->tm_hour * MINS_PER_HOUR + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec) *
diff --git a/src/backend/utils/adt/formatting.c b/src/backend/utils/adt/formatting.c
index 096d862..fb16358 100644
--- a/src/backend/utils/adt/formatting.c
+++ b/src/backend/utils/adt/formatting.c
@@ -86,6 +86,7 @@
#endif
#include "catalog/pg_collation.h"
+#include "catalog/pg_type.h"
#include "mb/pg_wchar.h"
#include "utils/builtins.h"
#include "utils/date.h"
@@ -436,7 +437,8 @@ typedef struct
clock, /* 12 or 24 hour clock? */
tzsign, /* +1, -1 or 0 if timezone info is absent */
tzh,
- tzm;
+ tzm,
+ ff; /* fractional precision */
} TmFromChar;
#define ZERO_tmfc(_X) memset(_X, 0, sizeof(TmFromChar))
@@ -596,6 +598,12 @@ typedef enum
DCH_Day,
DCH_Dy,
DCH_D,
+ DCH_FF1,
+ DCH_FF2,
+ DCH_FF3,
+ DCH_FF4,
+ DCH_FF5,
+ DCH_FF6,
DCH_FX, /* global suffix */
DCH_HH24,
DCH_HH12,
@@ -645,6 +653,12 @@ typedef enum
DCH_dd,
DCH_dy,
DCH_d,
+ DCH_ff1,
+ DCH_ff2,
+ DCH_ff3,
+ DCH_ff4,
+ DCH_ff5,
+ DCH_ff6,
DCH_fx,
DCH_hh24,
DCH_hh12,
@@ -745,7 +759,13 @@ static const KeyWord DCH_keywords[] = {
{"Day", 3, DCH_Day, false, FROM_CHAR_DATE_NONE},
{"Dy", 2, DCH_Dy, false, FROM_CHAR_DATE_NONE},
{"D", 1, DCH_D, true, FROM_CHAR_DATE_GREGORIAN},
- {"FX", 2, DCH_FX, false, FROM_CHAR_DATE_NONE}, /* F */
+ {"FF1", 3, DCH_FF1, false, FROM_CHAR_DATE_NONE}, /* F */
+ {"FF2", 3, DCH_FF2, false, FROM_CHAR_DATE_NONE},
+ {"FF3", 3, DCH_FF3, false, FROM_CHAR_DATE_NONE},
+ {"FF4", 3, DCH_FF4, false, FROM_CHAR_DATE_NONE},
+ {"FF5", 3, DCH_FF5, false, FROM_CHAR_DATE_NONE},
+ {"FF6", 3, DCH_FF6, false, FROM_CHAR_DATE_NONE},
+ {"FX", 2, DCH_FX, false, FROM_CHAR_DATE_NONE},
{"HH24", 4, DCH_HH24, true, FROM_CHAR_DATE_NONE}, /* H */
{"HH12", 4, DCH_HH12, true, FROM_CHAR_DATE_NONE},
{"HH", 2, DCH_HH, true, FROM_CHAR_DATE_NONE},
@@ -794,7 +814,13 @@ static const KeyWord DCH_keywords[] = {
{"dd", 2, DCH_DD, true, FROM_CHAR_DATE_GREGORIAN},
{"dy", 2, DCH_dy, false, FROM_CHAR_DATE_NONE},
{"d", 1, DCH_D, true, FROM_CHAR_DATE_GREGORIAN},
- {"fx", 2, DCH_FX, false, FROM_CHAR_DATE_NONE}, /* f */
+ {"ff1", 3, DCH_FF1, false, FROM_CHAR_DATE_NONE}, /* f */
+ {"ff2", 3, DCH_FF2, false, FROM_CHAR_DATE_NONE},
+ {"ff3", 3, DCH_FF3, false, FROM_CHAR_DATE_NONE},
+ {"ff4", 3, DCH_FF4, false, FROM_CHAR_DATE_NONE},
+ {"ff5", 3, DCH_FF5, false, FROM_CHAR_DATE_NONE},
+ {"ff6", 3, DCH_FF6, false, FROM_CHAR_DATE_NONE},
+ {"fx", 2, DCH_FX, false, FROM_CHAR_DATE_NONE},
{"hh24", 4, DCH_HH24, true, FROM_CHAR_DATE_NONE}, /* h */
{"hh12", 4, DCH_HH12, true, FROM_CHAR_DATE_NONE},
{"hh", 2, DCH_HH, true, FROM_CHAR_DATE_NONE},
@@ -895,10 +921,10 @@ static const int DCH_index[KeyWord_INDEX_SIZE] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, DCH_A_D, DCH_B_C, DCH_CC, DCH_DAY, -1,
- DCH_FX, -1, DCH_HH24, DCH_IDDD, DCH_J, -1, -1, DCH_MI, -1, DCH_OF,
+ DCH_FF1, -1, DCH_HH24, DCH_IDDD, DCH_J, -1, -1, DCH_MI, -1, DCH_OF,
DCH_P_M, DCH_Q, DCH_RM, DCH_SSSS, DCH_TZH, DCH_US, -1, DCH_WW, -1, DCH_Y_YYY,
-1, -1, -1, -1, -1, -1, -1, DCH_a_d, DCH_b_c, DCH_cc,
- DCH_day, -1, DCH_fx, -1, DCH_hh24, DCH_iddd, DCH_j, -1, -1, DCH_mi,
+ DCH_day, -1, DCH_ff1, -1, DCH_hh24, DCH_iddd, DCH_j, -1, -1, DCH_mi,
-1, -1, DCH_p_m, DCH_q, DCH_rm, DCH_ssss, DCH_tz, DCH_us, -1, DCH_ww,
-1, DCH_y_yyy, -1, -1, -1, -1
@@ -962,6 +988,10 @@ typedef struct NUMProc
*L_currency_symbol;
} NUMProc;
+/* Return flags for DCH_from_char() */
+#define DCH_DATED 0x01
+#define DCH_TIMED 0x02
+#define DCH_ZONED 0x04
/* ----------
* Functions
@@ -977,7 +1007,8 @@ static void parse_format(FormatNode *node, const char *str, const KeyWord *kw,
static void DCH_to_char(FormatNode *node, bool is_interval,
TmToChar *in, char *out, Oid collid);
-static void DCH_from_char(FormatNode *node, char *in, TmFromChar *out);
+static void DCH_from_char(FormatNode *node, char *in, TmFromChar *out,
+ bool strict);
#ifdef DEBUG_TO_FROM_CHAR
static void dump_index(const KeyWord *k, const int *index);
@@ -994,8 +1025,8 @@ static int from_char_parse_int_len(int *dest, char **src, const int len, FormatN
static int from_char_parse_int(int *dest, char **src, FormatNode *node);
static int seq_search(char *name, const char *const *array, int type, int max, int *len);
static int from_char_seq_search(int *dest, char **src, const char *const *array, int type, int max, FormatNode *node);
-static void do_to_timestamp(text *date_txt, text *fmt,
- struct pg_tm *tm, fsec_t *fsec);
+static void do_to_timestamp(text *date_txt, text *fmt, bool strict,
+ struct pg_tm *tm, fsec_t *fsec, int *fprec, int *flags);
static char *fill_str(char *str, int c, int max);
static FormatNode *NUM_cache(int len, NUMDesc *Num, text *pars_str, bool *shouldFree);
static char *int_to_roman(int number);
@@ -2514,18 +2545,32 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out, Oid col
str_numth(s, s, S_TH_TYPE(n->suffix));
s += strlen(s);
break;
- case DCH_MS: /* millisecond */
- sprintf(s, "%03d", (int) (in->fsec / INT64CONST(1000)));
- if (S_THth(n->suffix))
- str_numth(s, s, S_TH_TYPE(n->suffix));
+#define DCH_to_char_fsec(frac_fmt, frac_val) \
+ sprintf(s, frac_fmt, (int) (frac_val)); \
+ if (S_THth(n->suffix)) \
+ str_numth(s, s, S_TH_TYPE(n->suffix)); \
s += strlen(s);
+ case DCH_FF1: /* decisecond */
+ DCH_to_char_fsec("%01d", in->fsec / 100000);
+ break;
+ case DCH_FF2: /* centisecond */
+ DCH_to_char_fsec("%02d", in->fsec / 10000);
+ break;
+ case DCH_FF3:
+ case DCH_MS: /* millisecond */
+ DCH_to_char_fsec("%03d", in->fsec / 1000);
+ break;
+ case DCH_FF4:
+ DCH_to_char_fsec("%04d", in->fsec / 100);
break;
+ case DCH_FF5:
+ DCH_to_char_fsec("%05d", in->fsec / 10);
+ break;
+ case DCH_FF6:
case DCH_US: /* microsecond */
- sprintf(s, "%06d", (int) in->fsec);
- if (S_THth(n->suffix))
- str_numth(s, s, S_TH_TYPE(n->suffix));
- s += strlen(s);
+ DCH_to_char_fsec("%06d", in->fsec);
break;
+#undef DCH_to_char_fsec
case DCH_SSSS:
sprintf(s, "%d", tm->tm_hour * SECS_PER_HOUR +
tm->tm_min * SECS_PER_MINUTE +
@@ -3007,19 +3052,22 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out, Oid col
/* ----------
* Process a string as denoted by a list of FormatNodes.
* The TmFromChar struct pointed to by 'out' is populated with the results.
+ * 'strict' enables error reporting on unmatched trailing characters in input or
+ * format strings patterns.
*
* Note: we currently don't have any to_interval() function, so there
* is no need here for INVALID_FOR_INTERVAL checks.
* ----------
*/
static void
-DCH_from_char(FormatNode *node, char *in, TmFromChar *out)
+DCH_from_char(FormatNode *node, char *in, TmFromChar *out, bool strict)
{
FormatNode *n;
char *s;
int len,
value;
bool fx_mode = false;
+
/* number of extra skipped characters (more than given in format string) */
int extra_skip = 0;
@@ -3149,8 +3197,18 @@ DCH_from_char(FormatNode *node, char *in, TmFromChar *out)
SKIP_THth(s, n->suffix);
break;
+ case DCH_FF1:
+ case DCH_FF2:
+ case DCH_FF3:
+ case DCH_FF4:
+ case DCH_FF5:
+ case DCH_FF6:
+ out->ff = n->key->id - DCH_FF1 + 1;
+ /* fall through */
case DCH_US: /* microsecond */
- len = from_char_parse_int_len(&out->us, &s, 6, n);
+ len = from_char_parse_int_len(&out->us, &s,
+ n->key->id == DCH_US ? 6 :
+ out->ff, n);
out->us *= len == 1 ? 100000 :
len == 2 ? 10000 :
@@ -3173,6 +3231,7 @@ DCH_from_char(FormatNode *node, char *in, TmFromChar *out)
n->key->name)));
break;
case DCH_TZH:
+
/*
* Value of TZH might be negative. And the issue is that we
* might swallow minus sign as the separator. So, if we have
@@ -3374,6 +3433,23 @@ DCH_from_char(FormatNode *node, char *in, TmFromChar *out)
}
}
}
+
+ if (strict)
+ {
+ if (n->type != NODE_TYPE_END)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_DATETIME_FORMAT),
+ errmsg("input string is too short for datetime format")));
+
+ while (*s != '\0' && isspace((unsigned char) *s))
+ s++;
+
+ if (*s != '\0')
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_DATETIME_FORMAT),
+ errmsg("trailing characters remain in input string after "
+ "datetime format")));
+ }
}
/*
@@ -3394,6 +3470,109 @@ DCH_prevent_counter_overflow(void)
}
}
+/* Get mask of date/time/zone components present in format nodes. */
+static int
+DCH_datetime_type(FormatNode *node)
+{
+ FormatNode *n;
+ int flags = 0;
+
+ for (n = node; n->type != NODE_TYPE_END; n++)
+ {
+ if (n->type != NODE_TYPE_ACTION)
+ continue;
+
+ switch (n->key->id)
+ {
+ case DCH_FX:
+ break;
+ case DCH_A_M:
+ case DCH_P_M:
+ case DCH_a_m:
+ case DCH_p_m:
+ case DCH_AM:
+ case DCH_PM:
+ case DCH_am:
+ case DCH_pm:
+ case DCH_HH:
+ case DCH_HH12:
+ case DCH_HH24:
+ case DCH_MI:
+ case DCH_SS:
+ case DCH_MS: /* millisecond */
+ case DCH_US: /* microsecond */
+ case DCH_FF1:
+ case DCH_FF2:
+ case DCH_FF3:
+ case DCH_FF4:
+ case DCH_FF5:
+ case DCH_FF6:
+ case DCH_SSSS:
+ flags |= DCH_TIMED;
+ break;
+ case DCH_tz:
+ case DCH_TZ:
+ case DCH_OF:
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("formatting field \"%s\" is only supported in to_char",
+ n->key->name)));
+ flags |= DCH_ZONED;
+ break;
+ case DCH_TZH:
+ case DCH_TZM:
+ flags |= DCH_ZONED;
+ break;
+ case DCH_A_D:
+ case DCH_B_C:
+ case DCH_a_d:
+ case DCH_b_c:
+ case DCH_AD:
+ case DCH_BC:
+ case DCH_ad:
+ case DCH_bc:
+ case DCH_MONTH:
+ case DCH_Month:
+ case DCH_month:
+ case DCH_MON:
+ case DCH_Mon:
+ case DCH_mon:
+ case DCH_MM:
+ case DCH_DAY:
+ case DCH_Day:
+ case DCH_day:
+ case DCH_DY:
+ case DCH_Dy:
+ case DCH_dy:
+ case DCH_DDD:
+ case DCH_IDDD:
+ case DCH_DD:
+ case DCH_D:
+ case DCH_ID:
+ case DCH_WW:
+ case DCH_Q:
+ case DCH_CC:
+ case DCH_Y_YYY:
+ case DCH_YYYY:
+ case DCH_IYYY:
+ case DCH_YYY:
+ case DCH_IYY:
+ case DCH_YY:
+ case DCH_IY:
+ case DCH_Y:
+ case DCH_I:
+ case DCH_RM:
+ case DCH_rm:
+ case DCH_W:
+ case DCH_J:
+ flags |= DCH_DATED;
+ break;
+ }
+ }
+
+ return flags;
+}
+
/* select a DCHCacheEntry to hold the given format picture */
static DCHCacheEntry *
DCH_cache_getnew(const char *str)
@@ -3682,8 +3861,9 @@ to_timestamp(PG_FUNCTION_ARGS)
int tz;
struct pg_tm tm;
fsec_t fsec;
+ int fprec;
- do_to_timestamp(date_txt, fmt, &tm, &fsec);
+ do_to_timestamp(date_txt, fmt, false, &tm, &fsec, &fprec, NULL);
/* Use the specified time zone, if any. */
if (tm.tm_zone)
@@ -3701,6 +3881,10 @@ to_timestamp(PG_FUNCTION_ARGS)
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("timestamp out of range")));
+ /* Use the specified fractional precision, if any. */
+ if (fprec)
+ AdjustTimestampForTypmod(&result, fprec);
+
PG_RETURN_TIMESTAMP(result);
}
@@ -3718,7 +3902,7 @@ to_date(PG_FUNCTION_ARGS)
struct pg_tm tm;
fsec_t fsec;
- do_to_timestamp(date_txt, fmt, &tm, &fsec);
+ do_to_timestamp(date_txt, fmt, false, &tm, &fsec, NULL, NULL);
/* Prevent overflow in Julian-day routines */
if (!IS_VALID_JULIAN(tm.tm_year, tm.tm_mon, tm.tm_mday))
@@ -3740,10 +3924,175 @@ to_date(PG_FUNCTION_ARGS)
}
/*
+ * Make datetime type from 'date_txt' which is formated at argument 'fmt'.
+ * Actual datatype (returned in 'typid', 'typmod') is determined by
+ * presence of date/time/zone components in the format string.
+ */
+Datum
+to_datetime(text *date_txt, text *fmt, char *tzname, bool strict, Oid *typid,
+ int32 *typmod, int *tz)
+{
+ struct pg_tm tm;
+ fsec_t fsec;
+ int fprec = 0;
+ int flags;
+
+ do_to_timestamp(date_txt, fmt, strict, &tm, &fsec, &fprec, &flags);
+
+ *typmod = fprec ? fprec : -1; /* fractional part precision */
+ *tz = 0;
+
+ if (flags & DCH_DATED)
+ {
+ if (flags & DCH_TIMED)
+ {
+ if (flags & DCH_ZONED)
+ {
+ TimestampTz result;
+
+ if (tm.tm_zone)
+ tzname = (char *) tm.tm_zone;
+
+ if (tzname)
+ {
+ int dterr = DecodeTimezone(tzname, tz);
+
+ if (dterr)
+ DateTimeParseError(dterr, tzname, "timestamptz");
+ }
+ else
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_DATETIME_FORMAT),
+ errmsg("missing time-zone in timestamptz input string")));
+
+ *tz = DetermineTimeZoneOffset(&tm, session_timezone);
+ }
+
+ if (tm2timestamp(&tm, fsec, tz, &result) != 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+ errmsg("timestamptz out of range")));
+
+ AdjustTimestampForTypmod(&result, *typmod);
+
+ *typid = TIMESTAMPTZOID;
+ return TimestampTzGetDatum(result);
+ }
+ else
+ {
+ Timestamp result;
+
+ if (tm2timestamp(&tm, fsec, NULL, &result) != 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+ errmsg("timestamp out of range")));
+
+ AdjustTimestampForTypmod(&result, *typmod);
+
+ *typid = TIMESTAMPOID;
+ return TimestampGetDatum(result);
+ }
+ }
+ else
+ {
+ if (flags & DCH_ZONED)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_DATETIME_FORMAT),
+ errmsg("datetime format is zoned but not timed")));
+ }
+ else
+ {
+ DateADT result;
+
+ /* Prevent overflow in Julian-day routines */
+ if (!IS_VALID_JULIAN(tm.tm_year, tm.tm_mon, tm.tm_mday))
+ ereport(ERROR,
+ (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+ errmsg("date out of range: \"%s\"",
+ text_to_cstring(date_txt))));
+
+ result = date2j(tm.tm_year, tm.tm_mon, tm.tm_mday) -
+ POSTGRES_EPOCH_JDATE;
+
+ /* Now check for just-out-of-range dates */
+ if (!IS_VALID_DATE(result))
+ ereport(ERROR,
+ (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+ errmsg("date out of range: \"%s\"",
+ text_to_cstring(date_txt))));
+
+ *typid = DATEOID;
+ return DateADTGetDatum(result);
+ }
+ }
+ }
+ else if (flags & DCH_TIMED)
+ {
+ if (flags & DCH_ZONED)
+ {
+ TimeTzADT *result = palloc(sizeof(TimeTzADT));
+
+ if (tm.tm_zone)
+ tzname = (char *) tm.tm_zone;
+
+ if (tzname)
+ {
+ int dterr = DecodeTimezone(tzname, tz);
+
+ if (dterr)
+ DateTimeParseError(dterr, tzname, "timetz");
+ }
+ else
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_DATETIME_FORMAT),
+ errmsg("missing time-zone in timestamptz input string")));
+
+ *tz = DetermineTimeZoneOffset(&tm, session_timezone);
+ }
+
+ if (tm2timetz(&tm, fsec, *tz, result) != 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+ errmsg("timetz out of range")));
+
+ AdjustTimeForTypmod(&result->time, *typmod);
+
+ *typid = TIMETZOID;
+ return TimeTzADTPGetDatum(result);
+ }
+ else
+ {
+ TimeADT result;
+
+ if (tm2time(&tm, fsec, &result) != 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+ errmsg("time out of range")));
+
+ AdjustTimeForTypmod(&result, *typmod);
+
+ *typid = TIMEOID;
+ return TimeADTGetDatum(result);
+ }
+ }
+ else
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_DATETIME_FORMAT),
+ errmsg("datetime format is not dated and not timed")));
+ }
+
+ return (Datum) 0;
+}
+
+/*
* do_to_timestamp: shared code for to_timestamp and to_date
*
* Parse the 'date_txt' according to 'fmt', return results as a struct pg_tm
- * and fractional seconds.
+ * and fractional seconds and fractional precision.
*
* We parse 'fmt' into a list of FormatNodes, which is then passed to
* DCH_from_char to populate a TmFromChar with the parsed contents of
@@ -3751,10 +4100,15 @@ to_date(PG_FUNCTION_ARGS)
*
* The TmFromChar is then analysed and converted into the final results in
* struct 'tm' and 'fsec'.
+ *
+ * Bit mask of date/time/zone components found in 'fmt' is returned in 'flags'.
+ *
+ * 'strict' enables error reporting on unmatched trailing characters in input or
+ * format strings patterns.
*/
static void
-do_to_timestamp(text *date_txt, text *fmt,
- struct pg_tm *tm, fsec_t *fsec)
+do_to_timestamp(text *date_txt, text *fmt, bool strict,
+ struct pg_tm *tm, fsec_t *fsec, int *fprec, int *flags)
{
FormatNode *format;
TmFromChar tmfc;
@@ -3807,9 +4161,13 @@ do_to_timestamp(text *date_txt, text *fmt,
/* dump_index(DCH_keywords, DCH_index); */
#endif
- DCH_from_char(format, date_str, &tmfc);
+ DCH_from_char(format, date_str, &tmfc, strict);
pfree(fmt_str);
+
+ if (flags)
+ *flags = DCH_datetime_type(format);
+
if (!incache)
pfree(format);
}
@@ -3991,6 +4349,8 @@ do_to_timestamp(text *date_txt, text *fmt,
*fsec += tmfc.ms * 1000;
if (tmfc.us)
*fsec += tmfc.us;
+ if (fprec)
+ *fprec = tmfc.ff; /* fractional precision, if specified */
/* Range-check date fields according to bit mask computed above */
if (fmask != 0)
diff --git a/src/backend/utils/adt/timestamp.c b/src/backend/utils/adt/timestamp.c
index 7befb6a..5103cd4 100644
--- a/src/backend/utils/adt/timestamp.c
+++ b/src/backend/utils/adt/timestamp.c
@@ -70,7 +70,6 @@ typedef struct
static TimeOffset time2t(const int hour, const int min, const int sec, const fsec_t fsec);
static Timestamp dt2local(Timestamp dt, int timezone);
-static void AdjustTimestampForTypmod(Timestamp *time, int32 typmod);
static void AdjustIntervalForTypmod(Interval *interval, int32 typmod);
static TimestampTz timestamp2timestamptz(Timestamp timestamp);
static Timestamp timestamptz2timestamp(TimestampTz timestamp);
@@ -330,7 +329,7 @@ timestamp_scale(PG_FUNCTION_ARGS)
* AdjustTimestampForTypmod --- round off a timestamp to suit given typmod
* Works for either timestamp or timestamptz.
*/
-static void
+void
AdjustTimestampForTypmod(Timestamp *time, int32 typmod)
{
static const int64 TimestampScales[MAX_TIMESTAMP_PRECISION + 1] = {
diff --git a/src/include/utils/date.h b/src/include/utils/date.h
index bec129a..bd15bfa 100644
--- a/src/include/utils/date.h
+++ b/src/include/utils/date.h
@@ -76,5 +76,8 @@ extern TimeTzADT *GetSQLCurrentTime(int32 typmod);
extern TimeADT GetSQLLocalTime(int32 typmod);
extern int time2tm(TimeADT time, struct pg_tm *tm, fsec_t *fsec);
extern int timetz2tm(TimeTzADT *time, struct pg_tm *tm, fsec_t *fsec, int *tzp);
+extern int tm2time(struct pg_tm *tm, fsec_t fsec, TimeADT *result);
+extern int tm2timetz(struct pg_tm *tm, fsec_t fsec, int tz, TimeTzADT *result);
+extern void AdjustTimeForTypmod(TimeADT *time, int32 typmod);
#endif /* DATE_H */
diff --git a/src/include/utils/datetime.h b/src/include/utils/datetime.h
index f5ec9bb..8a6f2cd 100644
--- a/src/include/utils/datetime.h
+++ b/src/include/utils/datetime.h
@@ -338,4 +338,6 @@ extern TimeZoneAbbrevTable *ConvertTimeZoneAbbrevs(struct tzEntry *abbrevs,
int n);
extern void InstallTimeZoneAbbrevs(TimeZoneAbbrevTable *tbl);
+extern void AdjustTimestampForTypmod(Timestamp *time, int32 typmod);
+
#endif /* DATETIME_H */
diff --git a/src/include/utils/formatting.h b/src/include/utils/formatting.h
index 5b275dc..227779c 100644
--- a/src/include/utils/formatting.h
+++ b/src/include/utils/formatting.h
@@ -28,4 +28,7 @@ extern char *asc_tolower(const char *buff, size_t nbytes);
extern char *asc_toupper(const char *buff, size_t nbytes);
extern char *asc_initcap(const char *buff, size_t nbytes);
+extern Datum to_datetime(text *date_txt, text *fmt_txt, char *tzname,
+ bool strict, Oid *typid, int32 *typmod, int *tz);
+
#endif
diff --git a/src/test/regress/expected/horology.out b/src/test/regress/expected/horology.out
index b2b4577..74ecb7c 100644
--- a/src/test/regress/expected/horology.out
+++ b/src/test/regress/expected/horology.out
@@ -2786,6 +2786,85 @@ SELECT to_timestamp('2011-12-18 11:38 20', 'YYYY-MM-DD HH12:MI TZM');
Sun Dec 18 03:18:00 2011 PST
(1 row)
+SELECT i, to_timestamp('2018-11-02 12:34:56', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+ i | to_timestamp
+---+------------------------------
+ 1 | Fri Nov 02 12:34:56 2018 PDT
+ 2 | Fri Nov 02 12:34:56 2018 PDT
+ 3 | Fri Nov 02 12:34:56 2018 PDT
+ 4 | Fri Nov 02 12:34:56 2018 PDT
+ 5 | Fri Nov 02 12:34:56 2018 PDT
+ 6 | Fri Nov 02 12:34:56 2018 PDT
+(6 rows)
+
+SELECT i, to_timestamp('2018-11-02 12:34:56.1', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+ i | to_timestamp
+---+--------------------------------
+ 1 | Fri Nov 02 12:34:56.1 2018 PDT
+ 2 | Fri Nov 02 12:34:56.1 2018 PDT
+ 3 | Fri Nov 02 12:34:56.1 2018 PDT
+ 4 | Fri Nov 02 12:34:56.1 2018 PDT
+ 5 | Fri Nov 02 12:34:56.1 2018 PDT
+ 6 | Fri Nov 02 12:34:56.1 2018 PDT
+(6 rows)
+
+SELECT i, to_timestamp('2018-11-02 12:34:56.12', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+ i | to_timestamp
+---+---------------------------------
+ 1 | Fri Nov 02 12:34:56.1 2018 PDT
+ 2 | Fri Nov 02 12:34:56.12 2018 PDT
+ 3 | Fri Nov 02 12:34:56.12 2018 PDT
+ 4 | Fri Nov 02 12:34:56.12 2018 PDT
+ 5 | Fri Nov 02 12:34:56.12 2018 PDT
+ 6 | Fri Nov 02 12:34:56.12 2018 PDT
+(6 rows)
+
+SELECT i, to_timestamp('2018-11-02 12:34:56.123', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+ i | to_timestamp
+---+----------------------------------
+ 1 | Fri Nov 02 12:34:56.1 2018 PDT
+ 2 | Fri Nov 02 12:34:56.12 2018 PDT
+ 3 | Fri Nov 02 12:34:56.123 2018 PDT
+ 4 | Fri Nov 02 12:34:56.123 2018 PDT
+ 5 | Fri Nov 02 12:34:56.123 2018 PDT
+ 6 | Fri Nov 02 12:34:56.123 2018 PDT
+(6 rows)
+
+SELECT i, to_timestamp('2018-11-02 12:34:56.1234', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+ i | to_timestamp
+---+-----------------------------------
+ 1 | Fri Nov 02 12:34:56.1 2018 PDT
+ 2 | Fri Nov 02 12:34:56.12 2018 PDT
+ 3 | Fri Nov 02 12:34:56.123 2018 PDT
+ 4 | Fri Nov 02 12:34:56.1234 2018 PDT
+ 5 | Fri Nov 02 12:34:56.1234 2018 PDT
+ 6 | Fri Nov 02 12:34:56.1234 2018 PDT
+(6 rows)
+
+SELECT i, to_timestamp('2018-11-02 12:34:56.12345', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+ i | to_timestamp
+---+------------------------------------
+ 1 | Fri Nov 02 12:34:56.1 2018 PDT
+ 2 | Fri Nov 02 12:34:56.12 2018 PDT
+ 3 | Fri Nov 02 12:34:56.123 2018 PDT
+ 4 | Fri Nov 02 12:34:56.1235 2018 PDT
+ 5 | Fri Nov 02 12:34:56.12345 2018 PDT
+ 6 | Fri Nov 02 12:34:56.12345 2018 PDT
+(6 rows)
+
+SELECT i, to_timestamp('2018-11-02 12:34:56.123456', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+ i | to_timestamp
+---+-------------------------------------
+ 1 | Fri Nov 02 12:34:56.1 2018 PDT
+ 2 | Fri Nov 02 12:34:56.12 2018 PDT
+ 3 | Fri Nov 02 12:34:56.123 2018 PDT
+ 4 | Fri Nov 02 12:34:56.1235 2018 PDT
+ 5 | Fri Nov 02 12:34:56.12346 2018 PDT
+ 6 | Fri Nov 02 12:34:56.123456 2018 PDT
+(6 rows)
+
+SELECT i, to_timestamp('2018-11-02 12:34:56.123456789', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+ERROR: date/time field value out of range: "2018-11-02 12:34:56.123456789"
--
-- Check handling of multiple spaces in format and/or input
--
diff --git a/src/test/regress/expected/timestamp.out b/src/test/regress/expected/timestamp.out
index 4a2fabd..cb3dd19 100644
--- a/src/test/regress/expected/timestamp.out
+++ b/src/test/regress/expected/timestamp.out
@@ -1597,6 +1597,21 @@ SELECT '' AS to_char_11, to_char(d1, 'FMIYYY FMIYY FMIY FMI FMIW FMIDDD FMID')
| 2001 1 1 1 1 1 1
(65 rows)
+SELECT '' AS to_char_12, to_char(d, 'FF1 FF2 FF3 FF4 FF5 FF6 ff1 ff2 ff3 ff4 ff5 ff6 MS US')
+ FROM (VALUES
+ ('2018-11-02 12:34:56'::timestamp),
+ ('2018-11-02 12:34:56.78'),
+ ('2018-11-02 12:34:56.78901'),
+ ('2018-11-02 12:34:56.78901234')
+ ) d(d);
+ to_char_12 | to_char
+------------+--------------------------------------------------------------------
+ | 0 00 000 0000 00000 000000 0 00 000 0000 00000 000000 000 000000
+ | 7 78 780 7800 78000 780000 7 78 780 7800 78000 780000 780 780000
+ | 7 78 789 7890 78901 789010 7 78 789 7890 78901 789010 789 789010
+ | 7 78 789 7890 78901 789012 7 78 789 7890 78901 789012 789 789012
+(4 rows)
+
-- timestamp numeric fields constructor
SELECT make_timestamp(2014,12,28,6,30,45.887);
make_timestamp
diff --git a/src/test/regress/expected/timestamptz.out b/src/test/regress/expected/timestamptz.out
index 8a4c719..cdd3c14 100644
--- a/src/test/regress/expected/timestamptz.out
+++ b/src/test/regress/expected/timestamptz.out
@@ -1717,6 +1717,21 @@ SELECT '' AS to_char_11, to_char(d1, 'FMIYYY FMIYY FMIY FMI FMIW FMIDDD FMID')
| 2001 1 1 1 1 1 1
(66 rows)
+SELECT '' AS to_char_12, to_char(d, 'FF1 FF2 FF3 FF4 FF5 FF6 ff1 ff2 ff3 ff4 ff5 ff6 MS US')
+ FROM (VALUES
+ ('2018-11-02 12:34:56'::timestamptz),
+ ('2018-11-02 12:34:56.78'),
+ ('2018-11-02 12:34:56.78901'),
+ ('2018-11-02 12:34:56.78901234')
+ ) d(d);
+ to_char_12 | to_char
+------------+--------------------------------------------------------------------
+ | 0 00 000 0000 00000 000000 0 00 000 0000 00000 000000 000 000000
+ | 7 78 780 7800 78000 780000 7 78 780 7800 78000 780000 780 780000
+ | 7 78 789 7890 78901 789010 7 78 789 7890 78901 789010 789 789010
+ | 7 78 789 7890 78901 789012 7 78 789 7890 78901 789012 789 789012
+(4 rows)
+
-- Check OF, TZH, TZM with various zone offsets, particularly fractional hours
SET timezone = '00:00';
SELECT to_char(now(), 'OF') as "OF", to_char(now(), 'TZH:TZM') as "TZH:TZM";
diff --git a/src/test/regress/sql/horology.sql b/src/test/regress/sql/horology.sql
index e356dd5..3c85803 100644
--- a/src/test/regress/sql/horology.sql
+++ b/src/test/regress/sql/horology.sql
@@ -402,6 +402,15 @@ SELECT to_timestamp('2011-12-18 11:38 +05:20', 'YYYY-MM-DD HH12:MI TZH:TZM');
SELECT to_timestamp('2011-12-18 11:38 -05:20', 'YYYY-MM-DD HH12:MI TZH:TZM');
SELECT to_timestamp('2011-12-18 11:38 20', 'YYYY-MM-DD HH12:MI TZM');
+SELECT i, to_timestamp('2018-11-02 12:34:56', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+SELECT i, to_timestamp('2018-11-02 12:34:56.1', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+SELECT i, to_timestamp('2018-11-02 12:34:56.12', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+SELECT i, to_timestamp('2018-11-02 12:34:56.123', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+SELECT i, to_timestamp('2018-11-02 12:34:56.1234', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+SELECT i, to_timestamp('2018-11-02 12:34:56.12345', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+SELECT i, to_timestamp('2018-11-02 12:34:56.123456', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+SELECT i, to_timestamp('2018-11-02 12:34:56.123456789', 'YYYY-MM-DD HH24:MI:SS.FF' || i) FROM generate_series(1, 6) i;
+
--
-- Check handling of multiple spaces in format and/or input
--
diff --git a/src/test/regress/sql/timestamp.sql b/src/test/regress/sql/timestamp.sql
index b7957cb..fea4255 100644
--- a/src/test/regress/sql/timestamp.sql
+++ b/src/test/regress/sql/timestamp.sql
@@ -228,5 +228,13 @@ SELECT '' AS to_char_10, to_char(d1, 'IYYY IYY IY I IW IDDD ID')
SELECT '' AS to_char_11, to_char(d1, 'FMIYYY FMIYY FMIY FMI FMIW FMIDDD FMID')
FROM TIMESTAMP_TBL;
+SELECT '' AS to_char_12, to_char(d, 'FF1 FF2 FF3 FF4 FF5 FF6 ff1 ff2 ff3 ff4 ff5 ff6 MS US')
+ FROM (VALUES
+ ('2018-11-02 12:34:56'::timestamp),
+ ('2018-11-02 12:34:56.78'),
+ ('2018-11-02 12:34:56.78901'),
+ ('2018-11-02 12:34:56.78901234')
+ ) d(d);
+
-- timestamp numeric fields constructor
SELECT make_timestamp(2014,12,28,6,30,45.887);
diff --git a/src/test/regress/sql/timestamptz.sql b/src/test/regress/sql/timestamptz.sql
index c3bd46c..588c3e0 100644
--- a/src/test/regress/sql/timestamptz.sql
+++ b/src/test/regress/sql/timestamptz.sql
@@ -252,6 +252,14 @@ SELECT '' AS to_char_10, to_char(d1, 'IYYY IYY IY I IW IDDD ID')
SELECT '' AS to_char_11, to_char(d1, 'FMIYYY FMIYY FMIY FMI FMIW FMIDDD FMID')
FROM TIMESTAMPTZ_TBL;
+SELECT '' AS to_char_12, to_char(d, 'FF1 FF2 FF3 FF4 FF5 FF6 ff1 ff2 ff3 ff4 ff5 ff6 MS US')
+ FROM (VALUES
+ ('2018-11-02 12:34:56'::timestamptz),
+ ('2018-11-02 12:34:56.78'),
+ ('2018-11-02 12:34:56.78901'),
+ ('2018-11-02 12:34:56.78901234')
+ ) d(d);
+
-- Check OF, TZH, TZM with various zone offsets, particularly fractional hours
SET timezone = '00:00';
SELECT to_char(now(), 'OF') as "OF", to_char(now(), 'TZH:TZM') as "TZH:TZM";
--
2.7.4
[text/x-patch] 0002-Jsonpath-engine-and-docs-v26.patch (277.7K, ../264a6413-7175-9680-b976-d50392c001c0@postgrespro.ru/4-0002-Jsonpath-engine-and-docs-v26.patch)
download | inline diff:
From ec8c27ab7eacac3973d53cd6f7f4391b503c16b0 Mon Sep 17 00:00:00 2001
From: Nikita Glukhov <n.gluhov@postgrespro.ru>
Date: Wed, 23 Jan 2019 03:21:45 +0300
Subject: [PATCH 02/14] Implementation of JSON path language
SQL 2016 standards among other things contains set of SQL/JSON features for
JSON processing inside of relational database. The core of SQL/JSON is JSON
path language, allowing access parts of JSON documents and make computations
over them. This commit implements JSON path language as separate datatype
called "jsonpath".
Support of SQL/JSON features requires implementation of separate nodes, and it
will be considered in subsequent patches. This commit includes following
set of plain functions, allowing to execute jsonpath over jsonb values:
* jsonb_path_exists(jsonb, jsonpath[, jsonb]),
* jsonb_path_match(jsonb, jsonpath[, jsonb]),
* jsonb_path_query(jsonb, jsonpath[, jsonb]),
* jsonb_path_query_array(jsonb, jsonpath[, jsonb]).
* jsonb_path_query_first(jsonb, jsonpath[, jsonb]).
This commit also implements "jsonb @? jsonpath" and "jsonb @@ jsonpath", which
are wrappers over jsonpath_exists(jsonb, jsonpath) and jsonpath_predicate(jsonb,
jsonpath) correspondingly. These operators will have an index support
(implemented in subsequent patches).
Code was written by Nikita Glukhov and Teodor Sigaev, revised by me.
Documentation was written by Oleg Bartunov and Liudmila Mantrova. The work
was inspired by Oleg Bartunov and Teodor Sigaev.
Discussion: https://postgr.es/m/fcc6fc6a-b497-f39a-923d-aa34d0c588e8%402ndQuadrant.com
Author: Nikita Glukhov, Teodor Sigaev, Alexander Korotkov, Oleg Bartunov, Liudmila Mantrova
Reviewed-by: Andrew Dunstan, Pavel Stehule, Tomas Vondra, Alexander Korotkov
---
doc/src/sgml/biblio.sgml | 11 +
doc/src/sgml/func.sgml | 754 ++++++-
doc/src/sgml/json.sgml | 250 ++-
src/backend/Makefile | 11 +-
src/backend/utils/adt/.gitignore | 3 +
src/backend/utils/adt/Makefile | 18 +-
src/backend/utils/adt/json.c | 32 +-
src/backend/utils/adt/jsonb.c | 12 +-
src/backend/utils/adt/jsonb_util.c | 21 +
src/backend/utils/adt/jsonpath.c | 893 ++++++++
src/backend/utils/adt/jsonpath_exec.c | 2805 ++++++++++++++++++++++++++
src/backend/utils/adt/jsonpath_gram.y | 493 +++++
src/backend/utils/adt/jsonpath_scan.l | 630 ++++++
src/backend/utils/adt/regexp.c | 4 +-
src/backend/utils/errcodes.txt | 16 +
src/include/catalog/pg_operator.dat | 8 +
src/include/catalog/pg_proc.dat | 41 +
src/include/catalog/pg_type.dat | 5 +
src/include/regex/regex.h | 5 +
src/include/utils/.gitignore | 1 +
src/include/utils/jsonapi.h | 3 +-
src/include/utils/jsonb.h | 25 +-
src/include/utils/jsonpath.h | 283 +++
src/include/utils/jsonpath_scanner.h | 31 +
src/test/regress/expected/jsonb_jsonpath.out | 1765 ++++++++++++++++
src/test/regress/expected/jsonpath.out | 788 ++++++++
src/test/regress/parallel_schedule | 7 +-
src/test/regress/serial_schedule | 2 +
src/test/regress/sql/jsonb_jsonpath.sql | 395 ++++
src/test/regress/sql/jsonpath.sql | 144 ++
src/tools/msvc/Mkvcbuild.pm | 2 +
src/tools/msvc/Solution.pm | 18 +
32 files changed, 9446 insertions(+), 30 deletions(-)
create mode 100644 src/backend/utils/adt/.gitignore
create mode 100644 src/backend/utils/adt/jsonpath.c
create mode 100644 src/backend/utils/adt/jsonpath_exec.c
create mode 100644 src/backend/utils/adt/jsonpath_gram.y
create mode 100644 src/backend/utils/adt/jsonpath_scan.l
create mode 100644 src/include/utils/jsonpath.h
create mode 100644 src/include/utils/jsonpath_scanner.h
create mode 100644 src/test/regress/expected/jsonb_jsonpath.out
create mode 100644 src/test/regress/expected/jsonpath.out
create mode 100644 src/test/regress/sql/jsonb_jsonpath.sql
create mode 100644 src/test/regress/sql/jsonpath.sql
diff --git a/doc/src/sgml/biblio.sgml b/doc/src/sgml/biblio.sgml
index 4953024..f06305d 100644
--- a/doc/src/sgml/biblio.sgml
+++ b/doc/src/sgml/biblio.sgml
@@ -136,6 +136,17 @@
<pubdate>1988</pubdate>
</biblioentry>
+ <biblioentry id="sqltr-19075-6">
+ <title>SQL Technical Report</title>
+ <subtitle>Part 6: SQL support for JavaScript Object
+ Notation (JSON)</subtitle>
+ <edition>First Edition.</edition>
+ <biblioid>
+ <ulink url="http://standards.iso.org/ittf/PubliclyAvailableStandards/c067367_ISO_IEC_TR_19075-6_2017.zip"></ulink>.
+ </biblioid>
+ <pubdate>2017.</pubdate>
+ </biblioentry>
+
</bibliodiv>
<bibliodiv>
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 6f5baef..6331d1a 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -11313,26 +11313,578 @@ table2-mapping
</sect1>
<sect1 id="functions-json">
- <title>JSON Functions and Operators</title>
+ <title>JSON Functions, Operators, and Expressions</title>
- <indexterm zone="functions-json">
+ <para>
+ The functions, operators, and expressions described in this section
+ operate on JSON data:
+ </para>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ SQL/JSON path expressions
+ (see <xref linkend="functions-sqljson-path"/>).
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ PostgreSQL-specific functions and operators for JSON
+ data types (see <xref linkend="functions-pgjson"/>).
+ </para>
+ </listitem>
+ </itemizedlist>
+
+ <para>
+ To learn more about the SQL/JSON standard, see
+ <xref linkend="sqltr-19075-6"/>. For details on JSON types
+ supported in <productname>PostgreSQL</productname>,
+ see <xref linkend="datatype-json"/>.
+ </para>
+
+ <sect2 id="functions-sqljson-path">
+ <title>SQL/JSON Path Expressions</title>
+
+ <para>
+ SQL/JSON path expressions specify the items to be retrieved
+ from the JSON data, similar to XPath expressions used
+ for SQL access to XML. In <productname>PostgreSQL</productname>,
+ path expressions are implemented as the <type>jsonpath</type>
+ data type, described in <xref linkend="datatype-jsonpath"/>.
+ </para>
+
+ <para>JSON query functions and operators
+ pass the provided path expression to the <firstterm>path engine</firstterm>
+ for evaluation. If the expression matches the JSON data to be queried,
+ the corresponding SQL/JSON item is returned.
+ Path expressions are written in the SQL/JSON path language
+ and can also include arithmetic expressions and functions.
+ Query functions treat the provided expression as a
+ text string, so it must be enclosed in single quotes.
+ </para>
+
+ <para>
+ A path expression consists of a sequence of elements allowed
+ by the <type>jsonpath</type> data type.
+ The path expression is evaluated from left to right, but
+ you can use parentheses to change the order of operations.
+ If the evaluation is successful, an SQL/JSON sequence is produced,
+ and the evaluation result is returned to the JSON query function
+ that completes the specified computation.
+ </para>
+
+ <para>
+ To refer to the JSON data to be queried (the
+ <firstterm>context item</firstterm>), use the <literal>$</literal> sign
+ in the path expression. It can be followed by one or more
+ <link linkend="type-jsonpath-accessors">accessor operators</link>,
+ which go down the JSON structure level by level to retrieve the
+ content of context item. Each operator that follows deals with the
+ result of the previous evaluation step.
+ </para>
+
+ <para>
+ For example, suppose you have some JSON data from a GPS tracker that you
+ would like to parse, such as:
+<programlisting>
+{ "track" :
+ {
+ "segments" : [
+ { "location": [ 47.763, 13.4034 ],
+ "start time": "2018-10-14 10:05:14",
+ "HR": 73
+ },
+ { "location": [ 47.706, 13.2635 ],
+ "start time": "2018-10-14 10:39:21",
+ "HR": 130
+ } ]
+ }
+}
+</programlisting>
+ </para>
+
+ <para>
+ To retrieve the available track segments, you need to use the
+ <literal>.<replaceable>key</replaceable></literal> accessor
+ operator for all the preceding JSON objects:
+<programlisting>
+'$.track.segments'
+</programlisting>
+ </para>
+
+ <para>
+ If the item to retrieve is an element of an array, you have
+ to unnest this array using the [*] operator. For example,
+ the following path will return location coordinates for all
+ the available track segments:
+<programlisting>
+'$.track.segments[*].location'
+</programlisting>
+ </para>
+
+ <para>
+ To return the coordinates of the first segment only, you can
+ specify the corresponding subscript in the <literal>[]</literal>
+ accessor operator. Note that the SQL/JSON arrays are 0-relative:
+<programlisting>
+'$.track.segments[0].location'
+</programlisting>
+ </para>
+
+ <para>
+ The result of each path evaluation step can be processed
+ by one or more <type>jsonpath</type> operators and methods
+ listed in <xref linkend="functions-sqljson-path-operators"/>.
+ Each method must be preceded by a dot, while arithmetic and boolean
+ operators are separated from the operands by spaces. For example,
+ you can convert a text string into a datetime value:
+<programlisting>
+'$.track.segments[*]."start time".datetime()'
+</programlisting>
+ For more examples of using <type>jsonpath</type> operators
+ and methods within path expressions, see
+ <xref linkend="functions-sqljson-path-operators"/>.
+ </para>
+
+ <para>
+ When defining the path, you can also use one or more
+ <firstterm>filter expressions</firstterm>, which work similar to
+ the <command>WHERE</command> clause in SQL. Each filter expression
+ can provide one or more filtering conditions that are applied
+ to the result of the path evaluation. Each filter expression must
+ be enclosed in parentheses and preceded by a question mark.
+ Filter expressions are applied from left to right and can be nested.
+ The <literal>@</literal> variable denotes the current path evaluation
+ result to be filtered, and can be followed by one or more accessor
+ operators to define the JSON element by which to filter the result.
+ Functions and operators that can be used in the filtering condition
+ are listed in <xref linkend="functions-sqljson-filter-ex-table"/>.
+ The result of the filter expression may be true, false, or unknown.
+ </para>
+
+ <para>
+ For example, the following path expression returns the heart
+ rate value only if it is higher than 130:
+<programlisting>
+'$.track.segments[*].HR ? (@ > 130)'
+</programlisting>
+ </para>
+
+ <para>
+ But suppose you would like to retrieve the start time of this segment
+ instead. In this case, you have to filter out irrelevant
+ segments before getting the start time, so the path in the
+ filter condition looks differently:
+<programlisting>
+'$.track.segments[*] ? (@.HR > 130)."start time"'
+</programlisting>
+ </para>
+
+ <para>
+ <productname>PostgreSQL</productname> also implements the following
+ extensions of the SQL/JSON standard:
+ </para>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ A path expression can be a boolean predicate. For example:
+<programlisting>
+'$.track.segments[*].HR < 70'
+</programlisting>
+ </para>
+ </listitem>
+ <listitem>
+ <para>Writing the path as an expression is also valid:
+<programlisting>
+'$' || '.' || 'a'
+</programlisting>
+ </para>
+ </listitem>
+ </itemizedlist>
+
+ <sect3 id="strict-and-lax-modes">
+ <title>Strict and Lax Modes</title>
+ <para>
+ When you query JSON data, the path expression may not match the
+ actual JSON data structure. An attempt to access a non-existent
+ member of an object or element of an array results in a
+ structural error. SQL/JSON path expressions have two modes
+ of handling structural errors:
+ </para>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ lax (default) — the path engine implicitly adapts
+ the queried data to the specified path.
+ Any remaining structural errors are suppressed and converted
+ to empty SQL/JSON sequences.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ strict — if a structural error occurs, an error is raised.
+ </para>
+ </listitem>
+ </itemizedlist>
+
+ <para>
+ The lax mode facilitates matching of a JSON document structure and path
+ expression if the JSON data does not conform to the expected schema.
+ If an operand does not match the requirements of a particular operation,
+ it can be automatically wrapped as an SQL/JSON array or unwrapped by
+ converting its elements into an SQL/JSON sequence before performing
+ this operation. Besides, comparison operators automatically unwrap their
+ operands in the lax mode, so you can compare SQL/JSON arrays
+ out-of-the-box. Arrays of size 1 are interchangeable with a singleton.
+ </para>
+
+ <para>
+ For example, when querying the GPS data listed above, you can
+ abstract from the fact that it stores an array of segments
+ when using the lax mode:
+<programlisting>
+'lax $.track.segments.location'
+</programlisting>
+ </para>
+
+ <para>
+ In the strict mode, the specified path must exactly match the structure of
+ the queried JSON document to return an SQL/JSON item, so using this
+ path expression will cause an error. To get the same result as in
+ the lax mode, you have to explicitly unwrap the
+ <literal>segments</literal> array:
+<programlisting>
+'strict $.track.segments[*].location'
+</programlisting>
+ </para>
+
+ <para>
+ Implicit unwrapping in the lax mode is not performed in the following cases:
+ <itemizedlist>
+ <listitem>
+ <para>
+ The path expression contains <literal>type()</literal> or
+ <literal>size()</literal> methods that return the type
+ and the number of elements in the array, respectively.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ The queried JSON data contain nested arrays. In this case, only
+ the outermost array is unwrapped, while all the inner arrays
+ remain unchanged. Thus, implicit unwrapping can only go one
+ level down within each path evaluation step.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+
+ </sect3>
+
+ <sect3 id="functions-sqljson-path-operators">
+ <title>SQL/JSON Path Operators and Methods</title>
+
+ <table id="functions-sqljson-op-table">
+ <title><type>jsonpath</type> Operators and Methods</title>
+ <tgroup cols="5">
+ <thead>
+ <row>
+ <entry>Operator/Method</entry>
+ <entry>Description</entry>
+ <entry>Example JSON</entry>
+ <entry>Example Query</entry>
+ <entry>Result</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row>
+ <entry><literal>+</literal> (unary)</entry>
+ <entry>Plus operator that iterates over the json sequence</entry>
+ <entry><literal>{"x": [2.85, -14.7, -9.4]}</literal></entry>
+ <entry><literal>+ $.x.floor()</literal></entry>
+ <entry><literal>2, -15, -10</literal></entry>
+ </row>
+ <row>
+ <entry><literal>-</literal> (unary)</entry>
+ <entry>Minus operator that iterates over the json sequence</entry>
+ <entry><literal>{"x": [2.85, -14.7, -9.4]}</literal></entry>
+ <entry><literal>- $.x.floor()</literal></entry>
+ <entry><literal>-2, 15, 10</literal></entry>
+ </row>
+ <row>
+ <entry><literal>+</literal> (binary)</entry>
+ <entry>Addition</entry>
+ <entry><literal>[2]</literal></entry>
+ <entry><literal>2 + $[0]</literal></entry>
+ <entry><literal>4</literal></entry>
+ </row>
+ <row>
+ <entry><literal>-</literal> (binary)</entry>
+ <entry>Subtraction</entry>
+ <entry><literal>[2]</literal></entry>
+ <entry><literal>4 - $[0]</literal></entry>
+ <entry><literal>2</literal></entry>
+ </row>
+ <row>
+ <entry><literal>*</literal></entry>
+ <entry>Multiplication</entry>
+ <entry><literal>[4]</literal></entry>
+ <entry><literal>2 * $[0]</literal></entry>
+ <entry><literal>8</literal></entry>
+ </row>
+ <row>
+ <entry><literal>/</literal></entry>
+ <entry>Division</entry>
+ <entry><literal>[8]</literal></entry>
+ <entry><literal>$[0] / 2</literal></entry>
+ <entry><literal>4</literal></entry>
+ </row>
+ <row>
+ <entry><literal>%</literal></entry>
+ <entry>Modulus</entry>
+ <entry><literal>[32]</literal></entry>
+ <entry><literal>$[0] % 10</literal></entry>
+ <entry><literal>2</literal></entry>
+ </row>
+ <row>
+ <entry><literal>type()</literal></entry>
+ <entry>Type of the SQL/JSON item</entry>
+ <entry><literal>[1, "2", {}]</literal></entry>
+ <entry><literal>$[*].type()</literal></entry>
+ <entry><literal>"number", "string", "object"</literal></entry>
+ </row>
+ <row>
+ <entry><literal>size()</literal></entry>
+ <entry>Size of the SQL/JSON item</entry>
+ <entry><literal>{"m": [11, 15]}</literal></entry>
+ <entry><literal>$.m.size()</literal></entry>
+ <entry><literal>2</literal></entry>
+ </row>
+ <row>
+ <entry><literal>double()</literal></entry>
+ <entry>Approximate numeric value converted from a string</entry>
+ <entry><literal>{"len": "1.9"}</literal></entry>
+ <entry><literal>$.len.double() * 2</literal></entry>
+ <entry><literal>3.8</literal></entry>
+ </row>
+ <row>
+ <entry><literal>ceiling()</literal></entry>
+ <entry>Nearest integer greater than or equal to the SQL/JSON number</entry>
+ <entry><literal>{"h": 1.3}</literal></entry>
+ <entry><literal>$.h.ceiling()</literal></entry>
+ <entry><literal>2</literal></entry>
+ </row>
+ <row>
+ <entry><literal>floor()</literal></entry>
+ <entry>Nearest integer less than or equal to the SQL/JSON number</entry>
+ <entry><literal>{"h": 1.3}</literal></entry>
+ <entry><literal>$.h.floor()</literal></entry>
+ <entry><literal>1</literal></entry>
+ </row>
+ <row>
+ <entry><literal>abs()</literal></entry>
+ <entry>Absolute value of the SQL/JSON number</entry>
+ <entry><literal>{"z": -0.3}</literal></entry>
+ <entry><literal>$.z.abs()</literal></entry>
+ <entry><literal>0.3</literal></entry>
+ </row>
+ <row>
+ <entry><literal>datetime()</literal></entry>
+ <entry>Datetime value converted from a string</entry>
+ <entry><literal>["2015-8-1", "2015-08-12"]</literal></entry>
+ <entry><literal>$[*] ? (@.datetime() < "2015-08-2". datetime())</literal></entry>
+ <entry><literal>2015-8-1</literal></entry>
+ </row>
+ <row>
+ <entry><literal>datetime(<replaceable>template</replaceable>)</literal></entry>
+ <entry>Datetime value converted from a string with a specified template</entry>
+ <entry><literal>["12:30", "18:40"]</literal></entry>
+ <entry><literal>$[*].datetime("HH24:MI")</literal></entry>
+ <entry><literal>"12:30:00", "18:40:00"</literal></entry>
+ </row>
+ <row>
+ <entry><literal>datetime(<replaceable>template</replaceable>, <replaceable>default_tz</replaceable>)</literal></entry>
+ <entry>Datetime value converted from a string with a specified template and default timezone</entry>
+ <entry><literal>["12:30 -02", "18:40"]</literal></entry>
+ <entry><literal>$[*].datetime("HH24:MI TZH", "+03:00")</literal></entry>
+ <entry><literal>"12:30:00-02:00", "18:40:00+03:00"</literal></entry>
+ </row>
+ <row>
+ <entry><literal>keyvalue()</literal></entry>
+ <entry>Sequence of object's key-value pairs represented with objects containing three members ("key", "value", and object "id")</entry>
+ <entry><literal>{"x": "20", "y": 32}</literal></entry>
+ <entry><literal>$.keyvalue()</literal></entry>
+ <entry><literal>{"key": "x", "value": "20", "id": 0}, {"key": "y", "value": 32, "id": 0}</literal></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table id="functions-sqljson-filter-ex-table">
+ <title><type>jsonpath</type> Filter Expression Elements</title>
+ <tgroup cols="5">
+ <thead>
+ <row>
+ <entry>Value/Predicate</entry>
+ <entry>Description</entry>
+ <entry>Example JSON</entry>
+ <entry>Example Query</entry>
+ <entry>Result</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row>
+ <entry><literal>==</literal></entry>
+ <entry>Equality operator</entry>
+ <entry><literal>[1, 2, 1, 3]</literal></entry>
+ <entry><literal>$[*] ? (@ == 1)</literal></entry>
+ <entry><literal>1, 1</literal></entry>
+ </row>
+ <row>
+ <entry><literal>!=</literal></entry>
+ <entry>Non-equality operator</entry>
+ <entry><literal>[1, 2, 1, 3]</literal></entry>
+ <entry><literal>$[*] ? (@ != 1)</literal></entry>
+ <entry><literal>2, 3</literal></entry>
+ </row>
+ <row>
+ <entry><literal><></literal></entry>
+ <entry>Non-equality operator (same as <literal>!=</literal>)</entry>
+ <entry><literal>[1, 2, 1, 3]</literal></entry>
+ <entry><literal>$[*] ? (@ <> 1)</literal></entry>
+ <entry><literal>2, 3</literal></entry>
+ </row>
+ <row>
+ <entry><literal><</literal></entry>
+ <entry>Less-than operator</entry>
+ <entry><literal>[1, 2, 3]</literal></entry>
+ <entry><literal>$[*] ? (@ < 2)</literal></entry>
+ <entry><literal>1, 2</literal></entry>
+ </row>
+ <row>
+ <entry><literal><=</literal></entry>
+ <entry>Less-than-or-equal-to operator</entry>
+ <entry><literal>[1, 2, 3]</literal></entry>
+ <entry><literal>$[*] ? (@ < 2)</literal></entry>
+ <entry><literal>1</literal></entry>
+ </row>
+ <row>
+ <entry><literal>></literal></entry>
+ <entry>Greater-than operator</entry>
+ <entry><literal>[1, 2, 3]</literal></entry>
+ <entry><literal>$[*] ? (@ > 2)</literal></entry>
+ <entry><literal>3</literal></entry>
+ </row>
+ <row>
+ <entry><literal>></literal></entry>
+ <entry>Greater-than-or-equal-to operator</entry>
+ <entry><literal>[1, 2, 3]</literal></entry>
+ <entry><literal>$[*] ? (@ >= 2)</literal></entry>
+ <entry><literal>2, 3</literal></entry>
+ </row>
+ <row>
+ <entry><literal>true</literal></entry>
+ <entry>Value used to perform comparison with JSON <literal>true</literal> literal</entry>
+ <entry><literal>[{"name": "John", "parent": false},
+ {"name": "Chris", "parent": true}]</literal></entry>
+ <entry><literal>$[*] ? (@.parent == true)</literal></entry>
+ <entry><literal>{"name": "Chris", "parent": true}</literal></entry>
+ </row>
+ <row>
+ <entry><literal>false</literal></entry>
+ <entry>Value used to perform comparison with JSON <literal>false</literal> literal</entry>
+ <entry><literal>[{"name": "John", "parent": false},
+ {"name": "Chris", "parent": true}]</literal></entry>
+ <entry><literal>$[*] ? (@.parent == false)</literal></entry>
+ <entry><literal>{"name": "John", "parent": false}</literal></entry>
+ </row>
+ <row>
+ <entry><literal>null</literal></entry>
+ <entry>Value used to perform comparison with JSON <literal>null</literal> value</entry>
+ <entry><literal>[{"name": "Mary", "job": null},
+ {"name": "Michael", "job": "driver"}]</literal></entry>
+ <entry><literal>$[*] ? (@.job == null) .name</literal></entry>
+ <entry><literal>"Mary"</literal></entry>
+ </row>
+ <row>
+ <entry><literal>&&</literal></entry>
+ <entry>Boolean AND</entry>
+ <entry><literal>[1, 3, 7]</literal></entry>
+ <entry><literal>$[*] ? (@ > 1 && @ < 5)</literal></entry>
+ <entry><literal>3</literal></entry>
+ </row>
+ <row>
+ <entry><literal>||</literal></entry>
+ <entry>Boolean OR</entry>
+ <entry><literal>[1, 3, 7]</literal></entry>
+ <entry><literal>$[*] ? (@ < 1 || @ > 5)</literal></entry>
+ <entry><literal>7</literal></entry>
+ </row>
+ <row>
+ <entry><literal>!</literal></entry>
+ <entry>Boolean NOT</entry>
+ <entry><literal>[1, 3, 7]</literal></entry>
+ <entry><literal>$[*] ? (!(@ < 5))</literal></entry>
+ <entry><literal>7</literal></entry>
+ </row>
+ <row>
+ <entry><literal>like_regex</literal></entry>
+ <entry>Tests pattern matching with POSIX regular expressions</entry>
+ <entry><literal>["abc", "abd", "aBdC", "abdacb", "babc"]</literal></entry>
+ <entry><literal>$[*] ? (@ like_regex "^ab.*c" flag "i")</literal></entry>
+ <entry><literal>"abc", "aBdC", "abdacb"</literal></entry>
+ </row>
+ <row>
+ <entry><literal>starts with</literal></entry>
+ <entry>Tests whether the second operand is an initial substring of the first operand</entry>
+ <entry><literal>["John Smith", "Mary Stone", "Bob Johnson"]</literal></entry>
+ <entry><literal>$[*] ? (@ starts with "John")</literal></entry>
+ <entry><literal>"John Smith"</literal></entry>
+ </row>
+ <row>
+ <entry><literal>exists</literal></entry>
+ <entry>Tests whether a path expression has at least one SQL/JSON item</entry>
+ <entry><literal>{"x": [1, 2], "y": [2, 4]}</literal></entry>
+ <entry><literal>strict $.* ? (exists (@ ? (@[*] > 2)))</literal></entry>
+ <entry><literal>2, 4</literal></entry>
+ </row>
+ <row>
+ <entry><literal>is unknown</literal></entry>
+ <entry>Tests whether a boolean condition is <literal>unknown</literal></entry>
+ <entry><literal>[-1, 2, 7, "infinity"]</literal></entry>
+ <entry><literal>$[*] ? ((@ > 0) is unknown)</literal></entry>
+ <entry><literal>"infinity"</literal></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </sect3>
+
+ </sect2>
+
+ <sect2 id="functions-pgjson">
+ <title>PostgreSQL-specific JSON Functions and Operators</title>
+ <indexterm zone="functions-pgjson">
<primary>JSON</primary>
<secondary>functions and operators</secondary>
</indexterm>
- <para>
+ <para>
<xref linkend="functions-json-op-table"/> shows the operators that
- are available for use with the two JSON data types (see <xref
+ are available for use with JSON data types (see <xref
linkend="datatype-json"/>).
</para>
<table id="functions-json-op-table">
<title><type>json</type> and <type>jsonb</type> Operators</title>
- <tgroup cols="5">
+ <tgroup cols="6">
<thead>
<row>
<entry>Operator</entry>
<entry>Right Operand Type</entry>
+ <entry>Return type</entry>
<entry>Description</entry>
<entry>Example</entry>
<entry>Example Result</entry>
@@ -11342,6 +11894,7 @@ table2-mapping
<row>
<entry><literal>-></literal></entry>
<entry><type>int</type></entry>
+ <entry><type>json</type> or <type>jsonb</type></entry>
<entry>Get JSON array element (indexed from zero, negative
integers count from the end)</entry>
<entry><literal>'[{"a":"foo"},{"b":"bar"},{"c":"baz"}]'::json->2</literal></entry>
@@ -11350,6 +11903,7 @@ table2-mapping
<row>
<entry><literal>-></literal></entry>
<entry><type>text</type></entry>
+ <entry><type>json</type> or <type>jsonb</type></entry>
<entry>Get JSON object field by key</entry>
<entry><literal>'{"a": {"b":"foo"}}'::json->'a'</literal></entry>
<entry><literal>{"b":"foo"}</literal></entry>
@@ -11357,6 +11911,7 @@ table2-mapping
<row>
<entry><literal>->></literal></entry>
<entry><type>int</type></entry>
+ <entry><type>text</type></entry>
<entry>Get JSON array element as <type>text</type></entry>
<entry><literal>'[1,2,3]'::json->>2</literal></entry>
<entry><literal>3</literal></entry>
@@ -11364,6 +11919,7 @@ table2-mapping
<row>
<entry><literal>->></literal></entry>
<entry><type>text</type></entry>
+ <entry><type>text</type></entry>
<entry>Get JSON object field as <type>text</type></entry>
<entry><literal>'{"a":1,"b":2}'::json->>'b'</literal></entry>
<entry><literal>2</literal></entry>
@@ -11371,14 +11927,16 @@ table2-mapping
<row>
<entry><literal>#></literal></entry>
<entry><type>text[]</type></entry>
- <entry>Get JSON object at specified path</entry>
+ <entry><type>json</type> or <type>jsonb</type></entry>
+ <entry>Get JSON object at the specified path</entry>
<entry><literal>'{"a": {"b":{"c": "foo"}}}'::json#>'{a,b}'</literal></entry>
<entry><literal>{"c": "foo"}</literal></entry>
</row>
<row>
<entry><literal>#>></literal></entry>
<entry><type>text[]</type></entry>
- <entry>Get JSON object at specified path as <type>text</type></entry>
+ <entry><type>text</type></entry>
+ <entry>Get JSON object at the specified path as <type>text</type></entry>
<entry><literal>'{"a":[1,2,3],"b":[4,5,6]}'::json#>>'{a,2}'</literal></entry>
<entry><literal>3</literal></entry>
</row>
@@ -11503,6 +12061,18 @@ table2-mapping
JSON arrays, negative integers count from the end)</entry>
<entry><literal>'["a", {"b":1}]'::jsonb #- '{1,b}'</literal></entry>
</row>
+ <row>
+ <entry><literal>@?</literal></entry>
+ <entry><type>jsonpath</type></entry>
+ <entry>Does JSON path returns any item for the specified JSON value?</entry>
+ <entry><literal>'{"a":[1,2,3,4,5]}'::jsonb @? '$.a[*] ? (@ > 2)'</literal></entry>
+ </row>
+ <row>
+ <entry><literal>@@</literal></entry>
+ <entry><type>jsonpath</type></entry>
+ <entry>JSON path predicate check result for the specified JSON value</entry>
+ <entry><literal>'{"a":[1,2,3,4,5]}'::jsonb @@ '$.a[*] > 2'</literal></entry>
+ </row>
</tbody>
</tgroup>
</table>
@@ -11776,6 +12346,21 @@ table2-mapping
<indexterm>
<primary>jsonb_pretty</primary>
</indexterm>
+ <indexterm>
+ <primary>jsonb_path_exists</primary>
+ </indexterm>
+ <indexterm>
+ <primary>jsonb_path_match</primary>
+ </indexterm>
+ <indexterm>
+ <primary>jsonb_path_query</primary>
+ </indexterm>
+ <indexterm>
+ <primary>jsonb_path_query_array</primary>
+ </indexterm>
+ <indexterm>
+ <primary>jsonb_path_query_first</primary>
+ </indexterm>
<table id="functions-json-processing-table">
<title>JSON Processing Functions</title>
@@ -12110,6 +12695,159 @@ table2-mapping
</programlisting>
</entry>
</row>
+ <row>
+ <entry>
+ <para><literal>
+ jsonb_path_exists(target jsonb, path jsonpath)
+ </literal></para>
+ <para><literal>
+ jsonb_path_exists(target jsonb, path jsonpath, variables jsonb)
+ </literal></para>
+ </entry>
+ <entry><type>boolean</type></entry>
+ <entry>
+ Checks whether JSON path returns any item for the specified JSON
+ value. Variables are substituted to JSON path if specified.
+ </entry>
+ <entry>
+ <para><literal>
+ jsonb_path_exists('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ > 2)')
+ </literal></para>
+ <para><literal>
+ jsonb_path_exists('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min && @ <= $max)', '{"min":2,"max":4}')
+ </literal></para>
+ </entry>
+ <entry>
+ <para><literal>true</literal></para>
+ <para><literal>true</literal></para>
+ </entry>
+ </row>
+ <row>
+ <entry>
+ <para><literal>
+ jsonb_path_match(target jsonb, path jsonpath)
+ </literal></para>
+ <para><literal>
+ jsonb_path_match(target jsonb, path jsonpath, variables jsonb)
+ </literal></para>
+ </entry>
+ <entry><type>boolean</type></entry>
+ <entry>
+ Returns JSON path predicate result for the specified JSON value.
+ Variables are substituted to JSON path if specified.
+ </entry>
+ <entry>
+ <para><literal>
+ jsonb_path_match('{"a":[1,2,3,4,5]}', '$.a[*] > 2')
+ </literal></para>
+ <para><literal>
+ jsonb_path_match('{"a":[1,2,3,4,5]}', 'exists($.a[*] ? (@ >= $min && @ <= $max))', '{"min":2,"max":4}')
+ </literal></para>
+ </entry>
+ <entry>
+ <para><literal>true</literal></para>
+ <para><literal>true</literal></para>
+ </entry>
+ </row>
+ <row>
+ <entry>
+ <para><literal>
+ jsonb_path_query(target jsonb, path jsonpath)
+ </literal></para>
+ <para><literal>
+ jsonb_path_query(target jsonb, path jsonpath, variables jsonb)
+ </literal></para>
+ </entry>
+ <entry><type>setof jsonb</type></entry>
+ <entry>
+ Gets all JSON items returned by JSON path for the specified JSON
+ value. Variables are substituted to JSON path if specified.
+ </entry>
+ <entry>
+ <para><literal>
+ select * jsonb_path_query('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ > 2)');
+ </literal></para>
+ <para><literal>
+ select * jsonb_path_query('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min && @ <= $max)', '{"min":2,"max":4}');
+ </literal></para>
+ </entry>
+ <entry>
+ <para>
+ <programlisting>
+ jsonb_path_query
+------------------
+ 3
+ 4
+ 5
+ </programlisting>
+ </para>
+ <para>
+ <programlisting>
+ jsonb_path_query
+------------------
+ 2
+ 3
+ 4
+ </programlisting>
+ </para>
+ </entry>
+ </row>
+ <row>
+ <entry>
+ <para><literal>
+ jsonb_path_query_array(target jsonb, path jsonpath)
+ </literal></para>
+ <para><literal>
+ jsonb_path_query_array(target jsonb, path jsonpath, variables jsonb)
+ </literal></para>
+ </entry>
+ <entry><type>jsonb</type></entry>
+ <entry>
+ Gets all JSON items returned by JSON path for the specified JSON
+ value and wraps result into an array. Variables are substituted to
+ JSON path if specified.
+ </entry>
+ <entry>
+ <para><literal>
+ jsonb_path_query_array('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ > 2)')
+ </literal></para>
+ <para><literal>
+ jsonb_path_query_array('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min && @ <= $max)', '{"min":2,"max":4}')
+ </literal></para>
+ </entry>
+ <entry>
+ <para><literal>[3, 4, 5]</literal></para>
+ <para><literal>[2, 3, 4]</literal></para>
+ </entry>
+ </row>
+ <row>
+ <entry>
+ <para><literal>
+ jsonb_path_query_first(target jsonb, path jsonpath)
+ </literal></para>
+ <para><literal>
+ jsonb_path_query_first(target jsonb, path jsonpath, variables jsonb)
+ </literal></para>
+ </entry>
+ <entry><type>jsonb</type></entry>
+ <entry>
+ Gets the first JSON item returned by JSON path for the specified JSON
+ value. Returns <literal>NULL</literal> on no results. Variables are
+ substituted to JSON path if specified.
+ </entry>
+ <entry>
+ <para><literal>
+ jsonb_path_query_first('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ > 2)')
+ </literal></para>
+ <para><literal>
+ jsonb_path_query_first('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min && @ <= $max)', '{"min":2,"max":4}')
+ </literal></para>
+ </entry>
+ <entry>
+ <para><literal>3</literal></para>
+ <para><literal>2</literal></para>
+ </entry>
+ </row>
</tbody>
</tgroup>
</table>
@@ -12147,6 +12885,7 @@ table2-mapping
JSON fields that do not appear in the target row type will be
omitted from the output, and target columns that do not match any
JSON field will simply be NULL.
+
</para>
</note>
@@ -12201,6 +12940,7 @@ table2-mapping
<function>jsonb_agg</function> and <function>jsonb_object_agg</function>.
</para>
+ </sect2>
</sect1>
<sect1 id="functions-sequence">
diff --git a/doc/src/sgml/json.sgml b/doc/src/sgml/json.sgml
index e7b68fa..12a7073 100644
--- a/doc/src/sgml/json.sgml
+++ b/doc/src/sgml/json.sgml
@@ -22,8 +22,16 @@
</para>
<para>
- There are two JSON data types: <type>json</type> and <type>jsonb</type>.
- They accept <emphasis>almost</emphasis> identical sets of values as
+ <productname>PostgreSQL</productname> offers two types for storing JSON
+ data: <type>json</type> and <type>jsonb</type>. To implement effective query
+ mechanisms for these data types, <productname>PostgreSQL</productname>
+ also provides the <type>jsonpath</type> data type described in
+ <xref linkend="datatype-jsonpath"/>.
+ </para>
+
+ <para>
+ The <type>json</type> and <type>jsonb</type> data types
+ accept <emphasis>almost</emphasis> identical sets of values as
input. The major practical difference is one of efficiency. The
<type>json</type> data type stores an exact copy of the input text,
which processing functions must reparse on each execution; while
@@ -217,6 +225,11 @@ SELECT '{"reading": 1.230e-5}'::json, '{"reading": 1.230e-5}'::jsonb;
in this example, even though those are semantically insignificant for
purposes such as equality checks.
</para>
+
+ <para>
+ For the list of built-in functions and operators available for
+ constructing and processing JSON values, see <xref linkend="functions-json"/>.
+ </para>
</sect2>
<sect2 id="json-doc-design">
@@ -536,6 +549,19 @@ SELECT jdoc->'guid', jdoc->'name' FROM api WHERE jdoc @> '{"tags": ["qu
</para>
<para>
+ <literal>jsonb_ops</literal> and <literal>jsonb_path_ops</literal> also
+ support queries with <type>jsonpath</type> operators <literal>@?</literal>
+ and <literal>@@</literal>. The previous example for <literal>@></literal>
+ operator can be rewritten as follows:
+ <programlisting>
+-- Find documents in which the key "tags" contains array element "qui"
+SELECT jdoc->'guid', jdoc->'name' FROM api WHERE jdoc @? '$.tags[*] ? (@ == "qui")';
+SELECT jdoc->'guid', jdoc->'name' FROM api WHERE jdoc @@ '$.tags[*] == "qui"';
+</programlisting>
+
+ </para>
+
+ <para>
<type>jsonb</type> also supports <literal>btree</literal> and <literal>hash</literal>
indexes. These are usually useful only if it's important to check
equality of complete JSON documents.
@@ -593,4 +619,224 @@ SELECT jdoc->'guid', jdoc->'name' FROM api WHERE jdoc @> '{"tags": ["qu
lists, and scalars, as appropriate.
</para>
</sect2>
+
+ <sect2 id="datatype-jsonpath">
+ <title>jsonpath Type</title>
+
+ <indexterm zone="datatype-jsonpath">
+ <primary>jsonpath</primary>
+ </indexterm>
+
+ <para>
+ The <type>jsonpath</type> type implements support for the SQL/JSON path language
+ in <productname>PostgreSQL</productname> to effectively query JSON data.
+ It provides a binary representation of the parsed SQL/JSON path
+ expression that specifies the items to be retrieved by the path
+ engine from the JSON data for further processing with the
+ SQL/JSON query functions.
+ </para>
+
+ <para>
+ The SQL/JSON path language is fully integrated into the SQL engine:
+ the semantics of its predicates and operators generally follow SQL.
+ At the same time, to provide a most natural way of working with JSON data,
+ SQL/JSON path syntax uses some of the JavaScript conventions:
+ </para>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ Dot <literal>.</literal> is used for member access.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Square brackets <literal>[]</literal> are used for array access.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ SQL/JSON arrays are 0-relative, unlike regular SQL arrays that start from 1.
+ </para>
+ </listitem>
+ </itemizedlist>
+
+ <para>
+ An SQL/JSON path expression is an SQL character string literal,
+ so it must be enclosed in single quotes when passed to an SQL/JSON
+ query function. Following the JavaScript
+ conventions, character string literals within the path expression
+ must be enclosed in double quotes. Any single quotes within this
+ character string literal must be escaped with a single quote
+ by the SQL convention.
+ </para>
+
+ <para>
+ A path expression consists of a sequence of path elements,
+ which can be the following:
+ <itemizedlist>
+ <listitem>
+ <para>
+ Path literals of JSON primitive types:
+ Unicode text, numeric, true, false, or null.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Path variables listed in <xref linkend="type-jsonpath-variables"/>.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Accessor operators listed in <xref linkend="type-jsonpath-accessors"/>.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ <type>jsonpath</type> operators and methods listed
+ in <xref linkend="functions-sqljson-path-operators"/>
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Parentheses, which can be used to provide filter expressions
+ or define the order of path evaluation.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+
+ <para>
+ For details on using <type>jsonpath</type> expressions with SQL/JSON
+ query functions, see <xref linkend="functions-sqljson-path"/>.
+ </para>
+
+ <table id="type-jsonpath-variables">
+ <title><type>jsonpath</type> Variables</title>
+ <tgroup cols="2">
+ <thead>
+ <row>
+ <entry>Variable</entry>
+ <entry>Description</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row>
+ <entry><literal>$</literal></entry>
+ <entry>A variable representing the JSON text to be queried
+ (the <firstterm>context item</firstterm>).
+ </entry>
+ </row>
+ <row>
+ <entry><literal>$varname</literal></entry>
+ <entry>A named variable. Its value must be set in the
+ <command>PASSING</command> clause of an SQL/JSON query function.
+ <!-- TBD: See <xref linkend="sqljson-input-clause"/> -->
+ for details.
+ </entry>
+ </row>
+ <row>
+ <entry><literal>@</literal></entry>
+ <entry>A variable representing the result of path evaluation
+ in filter expressions.
+ </entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table id="type-jsonpath-accessors">
+ <title><type>jsonpath</type> Accessors</title>
+ <tgroup cols="2">
+ <thead>
+ <row>
+ <entry>Accessor Operator</entry>
+ <entry>Description</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row>
+ <entry>
+ <para>
+ <literal>.<replaceable>key</replaceable></literal>
+ </para>
+ <para>
+ <literal>."$<replaceable>varname</replaceable>"</literal>
+ </para>
+ </entry>
+ <entry>
+ <para>
+ Member accessor that returns an object member with
+ the specified key. If the key name is a named variable
+ starting with <literal>$</literal> or does not meet the
+ JavaScript rules of an identifier, it must be enclosed in
+ double quotes as a character string literal.
+ </para>
+ </entry>
+ </row>
+ <row>
+ <entry>
+ <para>
+ <literal>.*</literal>
+ </para>
+ </entry>
+ <entry>
+ <para>
+ Wildcard member accessor that returns the values of all
+ members located at the top level of the current object.
+ </para>
+ </entry>
+ </row>
+ <row>
+ <entry>
+ <para>
+ <literal>.**</literal>
+ </para>
+ </entry>
+ <entry>
+ <para>
+ Recursive wildcard member accessor that processes all levels
+ of the JSON hierarchy of the current object and returns all
+ the member values, regardless of their nesting level. This
+ is a <productname>PostgreSQL</productname> extension of
+ the SQL/JSON standard.
+ </para>
+ </entry>
+ </row>
+ <row>
+ <entry>
+ <para>
+ <literal>[<replaceable>subscript</replaceable>, ...]</literal>
+ </para>
+ <para>
+ <literal>[<replaceable>subscript</replaceable> to last]</literal>
+ </para>
+ </entry>
+ <entry>
+ <para>
+ Array element accessor. The provided numeric subscripts return the
+ corresponding array elements. The first element in an array is
+ accessed with [0]. The <literal>last</literal> keyword denotes
+ the last subscript in an array and can be used to handle arrays
+ of unknown length.
+ </para>
+ </entry>
+ </row>
+ <row>
+ <entry>
+ <para>
+ <literal>[*]</literal>
+ </para>
+ </entry>
+ <entry>
+ <para>
+ Wildcard array element accessor that returns all array elements.
+ </para>
+ </entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ </sect2>
</sect1>
diff --git a/src/backend/Makefile b/src/backend/Makefile
index 478a96d..31d9d66 100644
--- a/src/backend/Makefile
+++ b/src/backend/Makefile
@@ -136,6 +136,9 @@ parser/gram.h: parser/gram.y
storage/lmgr/lwlocknames.h: storage/lmgr/generate-lwlocknames.pl storage/lmgr/lwlocknames.txt
$(MAKE) -C storage/lmgr lwlocknames.h lwlocknames.c
+utils/adt/jsonpath_gram.h: utils/adt/jsonpath_gram.y
+ $(MAKE) -C utils/adt jsonpath_gram.h
+
# run this unconditionally to avoid needing to know its dependencies here:
submake-catalog-headers:
$(MAKE) -C catalog distprep generated-header-symlinks
@@ -159,7 +162,7 @@ submake-utils-headers:
.PHONY: generated-headers
-generated-headers: $(top_builddir)/src/include/parser/gram.h $(top_builddir)/src/include/storage/lwlocknames.h submake-catalog-headers submake-utils-headers
+generated-headers: $(top_builddir)/src/include/parser/gram.h $(top_builddir)/src/include/storage/lwlocknames.h $(top_builddir)/src/include/utils/jsonpath_gram.h submake-catalog-headers submake-utils-headers
$(top_builddir)/src/include/parser/gram.h: parser/gram.h
prereqdir=`cd '$(dir $<)' >/dev/null && pwd` && \
@@ -171,6 +174,10 @@ $(top_builddir)/src/include/storage/lwlocknames.h: storage/lmgr/lwlocknames.h
cd '$(dir $@)' && rm -f $(notdir $@) && \
$(LN_S) "$$prereqdir/$(notdir $<)" .
+$(top_builddir)/src/include/utils/jsonpath_gram.h: utils/adt/jsonpath_gram.h
+ prereqdir=`cd '$(dir $<)' >/dev/null && pwd` && \
+ cd '$(dir $@)' && rm -f $(notdir $@) && \
+ $(LN_S) "$$prereqdir/$(notdir $<)" .
utils/probes.o: utils/probes.d $(SUBDIROBJS)
$(DTRACE) $(DTRACEFLAGS) -C -G -s $(call expand_subsys,$^) -o $@
@@ -186,6 +193,7 @@ distprep:
$(MAKE) -C replication repl_gram.c repl_scanner.c syncrep_gram.c syncrep_scanner.c
$(MAKE) -C storage/lmgr lwlocknames.h lwlocknames.c
$(MAKE) -C utils distprep
+ $(MAKE) -C utils/adt jsonpath_gram.c jsonpath_gram.h jsonpath_scan.c
$(MAKE) -C utils/misc guc-file.c
$(MAKE) -C utils/sort qsort_tuple.c
@@ -308,6 +316,7 @@ maintainer-clean: distclean
storage/lmgr/lwlocknames.c \
storage/lmgr/lwlocknames.h \
utils/misc/guc-file.c \
+ utils/adt/jsonpath_gram.h \
utils/sort/qsort_tuple.c
diff --git a/src/backend/utils/adt/.gitignore b/src/backend/utils/adt/.gitignore
new file mode 100644
index 0000000..7fab054
--- /dev/null
+++ b/src/backend/utils/adt/.gitignore
@@ -0,0 +1,3 @@
+/jsonpath_gram.h
+/jsonpath_gram.c
+/jsonpath_scan.c
diff --git a/src/backend/utils/adt/Makefile b/src/backend/utils/adt/Makefile
index 20eead1..d335eec 100644
--- a/src/backend/utils/adt/Makefile
+++ b/src/backend/utils/adt/Makefile
@@ -17,7 +17,8 @@ OBJS = acl.o amutils.o arrayfuncs.o array_expanded.o array_selfuncs.o \
float.o format_type.o formatting.o genfile.o \
geo_ops.o geo_selfuncs.o geo_spgist.o inet_cidr_ntop.o inet_net_pton.o \
int.o int8.o json.o jsonb.o jsonb_gin.o jsonb_op.o jsonb_util.o \
- jsonfuncs.o like.o lockfuncs.o mac.o mac8.o misc.o name.o \
+ jsonfuncs.o jsonpath_gram.o jsonpath_scan.o jsonpath.o jsonpath_exec.o \
+ like.o lockfuncs.o mac.o mac8.o misc.o name.o \
network.o network_gist.o network_selfuncs.o network_spgist.o \
numeric.o numutils.o oid.o oracle_compat.o \
orderedsetaggs.o partitionfuncs.o pg_locale.o pg_lsn.o \
@@ -32,6 +33,21 @@ OBJS = acl.o amutils.o arrayfuncs.o array_expanded.o array_selfuncs.o \
txid.o uuid.o varbit.o varchar.o varlena.o version.o \
windowfuncs.o xid.o xml.o
+jsonpath_gram.c: BISONFLAGS += -d
+
+jsonpath_scan.c: FLEXFLAGS = -CF -p -p
+
+jsonpath_gram.h: jsonpath_gram.c ;
+
+# Force these dependencies to be known even without dependency info built:
+jsonpath_gram.o jsonpath_scan.o jsonpath_parser.o: jsonpath_gram.h
+
+# jsonpath_gram.c, jsonpath_gram.h, and jsonpath_scan.c are in the distribution
+# tarball, so they are not cleaned here.
+clean distclean maintainer-clean:
+ rm -f lex.backup
+
+
like.o: like.c like_match.c
varlena.o: varlena.c levenshtein.c
diff --git a/src/backend/utils/adt/json.c b/src/backend/utils/adt/json.c
index de0d072..7526add 100644
--- a/src/backend/utils/adt/json.c
+++ b/src/backend/utils/adt/json.c
@@ -1506,7 +1506,7 @@ datum_to_json(Datum val, bool is_null, StringInfo result,
{
char buf[MAXDATELEN + 1];
- JsonEncodeDateTime(buf, val, DATEOID);
+ JsonEncodeDateTime(buf, val, DATEOID, NULL);
appendStringInfo(result, "\"%s\"", buf);
}
break;
@@ -1514,7 +1514,7 @@ datum_to_json(Datum val, bool is_null, StringInfo result,
{
char buf[MAXDATELEN + 1];
- JsonEncodeDateTime(buf, val, TIMESTAMPOID);
+ JsonEncodeDateTime(buf, val, TIMESTAMPOID, NULL);
appendStringInfo(result, "\"%s\"", buf);
}
break;
@@ -1522,7 +1522,7 @@ datum_to_json(Datum val, bool is_null, StringInfo result,
{
char buf[MAXDATELEN + 1];
- JsonEncodeDateTime(buf, val, TIMESTAMPTZOID);
+ JsonEncodeDateTime(buf, val, TIMESTAMPTZOID, NULL);
appendStringInfo(result, "\"%s\"", buf);
}
break;
@@ -1550,10 +1550,11 @@ datum_to_json(Datum val, bool is_null, StringInfo result,
/*
* Encode 'value' of datetime type 'typid' into JSON string in ISO format using
- * optionally preallocated buffer 'buf'.
+ * optionally preallocated buffer 'buf'. Optional 'tzp' determines time-zone
+ * offset (in seconds) in which we want to show timestamptz.
*/
char *
-JsonEncodeDateTime(char *buf, Datum value, Oid typid)
+JsonEncodeDateTime(char *buf, Datum value, Oid typid, const int *tzp)
{
if (!buf)
buf = palloc(MAXDATELEN + 1);
@@ -1630,11 +1631,30 @@ JsonEncodeDateTime(char *buf, Datum value, Oid typid)
const char *tzn = NULL;
timestamp = DatumGetTimestampTz(value);
+
+ /*
+ * If time-zone is specified, we apply a time-zone shift,
+ * convert timestamptz to pg_tm as if it was without time-zone,
+ * and then use specified time-zone for encoding timestamp
+ * into a string.
+ */
+ if (tzp)
+ {
+ tz = *tzp;
+ timestamp -= (TimestampTz) tz * USECS_PER_SEC;
+ }
+
/* Same as timestamptz_out(), but forcing DateStyle */
if (TIMESTAMP_NOT_FINITE(timestamp))
EncodeSpecialTimestamp(timestamp, buf);
- else if (timestamp2tm(timestamp, &tz, &tm, &fsec, &tzn, NULL) == 0)
+ else if (timestamp2tm(timestamp, tzp ? NULL : &tz, &tm, &fsec,
+ tzp ? NULL : &tzn, NULL) == 0)
+ {
+ if (tzp)
+ tm.tm_isdst = 1; /* set time-zone presence flag */
+
EncodeDateTime(&tm, fsec, true, tz, tzn, USE_XSD_DATES, buf);
+ }
else
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
diff --git a/src/backend/utils/adt/jsonb.c b/src/backend/utils/adt/jsonb.c
index c02c856..78f1506 100644
--- a/src/backend/utils/adt/jsonb.c
+++ b/src/backend/utils/adt/jsonb.c
@@ -794,17 +794,17 @@ datum_to_jsonb(Datum val, bool is_null, JsonbInState *result,
break;
case JSONBTYPE_DATE:
jb.type = jbvString;
- jb.val.string.val = JsonEncodeDateTime(NULL, val, DATEOID);
+ jb.val.string.val = JsonEncodeDateTime(NULL, val, DATEOID, NULL);
jb.val.string.len = strlen(jb.val.string.val);
break;
case JSONBTYPE_TIMESTAMP:
jb.type = jbvString;
- jb.val.string.val = JsonEncodeDateTime(NULL, val, TIMESTAMPOID);
+ jb.val.string.val = JsonEncodeDateTime(NULL, val, TIMESTAMPOID, NULL);
jb.val.string.len = strlen(jb.val.string.val);
break;
case JSONBTYPE_TIMESTAMPTZ:
jb.type = jbvString;
- jb.val.string.val = JsonEncodeDateTime(NULL, val, TIMESTAMPTZOID);
+ jb.val.string.val = JsonEncodeDateTime(NULL, val, TIMESTAMPTZOID, NULL);
jb.val.string.len = strlen(jb.val.string.val);
break;
case JSONBTYPE_JSONCAST:
@@ -1857,7 +1857,7 @@ jsonb_object_agg_finalfn(PG_FUNCTION_ARGS)
/*
* Extract scalar value from raw-scalar pseudo-array jsonb.
*/
-static bool
+JsonbValue *
JsonbExtractScalar(JsonbContainer *jbc, JsonbValue *res)
{
JsonbIterator *it;
@@ -1868,7 +1868,7 @@ JsonbExtractScalar(JsonbContainer *jbc, JsonbValue *res)
{
/* inform caller about actual type of container */
res->type = (JsonContainerIsArray(jbc)) ? jbvArray : jbvObject;
- return false;
+ return NULL;
}
/*
@@ -1891,7 +1891,7 @@ JsonbExtractScalar(JsonbContainer *jbc, JsonbValue *res)
tok = JsonbIteratorNext(&it, &tmp, true);
Assert(tok == WJB_DONE);
- return true;
+ return res;
}
/*
diff --git a/src/backend/utils/adt/jsonb_util.c b/src/backend/utils/adt/jsonb_util.c
index 6695363..c4bb7c8 100644
--- a/src/backend/utils/adt/jsonb_util.c
+++ b/src/backend/utils/adt/jsonb_util.c
@@ -15,8 +15,11 @@
#include "access/hash.h"
#include "catalog/pg_collation.h"
+#include "catalog/pg_type.h"
#include "miscadmin.h"
#include "utils/builtins.h"
+#include "utils/datetime.h"
+#include "utils/jsonapi.h"
#include "utils/jsonb.h"
#include "utils/memutils.h"
#include "utils/varlena.h"
@@ -241,6 +244,7 @@ compareJsonbContainers(JsonbContainer *a, JsonbContainer *b)
res = (va.val.object.nPairs > vb.val.object.nPairs) ? 1 : -1;
break;
case jbvBinary:
+ case jbvDatetime:
elog(ERROR, "unexpected jbvBinary value");
}
}
@@ -1741,11 +1745,28 @@ convertJsonbScalar(StringInfo buffer, JEntry *jentry, JsonbValue *scalarVal)
JENTRY_ISBOOL_TRUE : JENTRY_ISBOOL_FALSE;
break;
+ case jbvDatetime:
+ {
+ char buf[MAXDATELEN + 1];
+ size_t len;
+
+ JsonEncodeDateTime(buf,
+ scalarVal->val.datetime.value,
+ scalarVal->val.datetime.typid,
+ &scalarVal->val.datetime.tz);
+ len = strlen(buf);
+ appendToBuffer(buffer, buf, len);
+
+ *jentry = JENTRY_ISSTRING | len;
+ }
+ break;
+
default:
elog(ERROR, "invalid jsonb scalar type");
}
}
+
/*
* Compare two jbvString JsonbValue values, a and b.
*
diff --git a/src/backend/utils/adt/jsonpath.c b/src/backend/utils/adt/jsonpath.c
new file mode 100644
index 0000000..78ca1fa
--- /dev/null
+++ b/src/backend/utils/adt/jsonpath.c
@@ -0,0 +1,893 @@
+/*-------------------------------------------------------------------------
+ *
+ * jsonpath.c
+ * Input/output and supporting routines for jsonpath
+ *
+ * Copyright (c) 2019, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ * src/backend/utils/adt/jsonpath.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include "postgres.h"
+
+#include "funcapi.h"
+#include "lib/stringinfo.h"
+#include "miscadmin.h"
+#include "utils/builtins.h"
+#include "utils/json.h"
+#include "utils/jsonpath.h"
+
+/*****************************INPUT/OUTPUT************************************/
+
+/*
+ * alignStringInfoInt - aling StringInfo to int by adding
+ * zero padding bytes
+ */
+static void
+alignStringInfoInt(StringInfo buf)
+{
+ switch(INTALIGN(buf->len) - buf->len)
+ {
+ case 3:
+ appendStringInfoCharMacro(buf, 0);
+ case 2:
+ appendStringInfoCharMacro(buf, 0);
+ case 1:
+ appendStringInfoCharMacro(buf, 0);
+ default:
+ break;
+ }
+}
+
+/*
+ * Convert AST to flat jsonpath type representation
+ */
+static int
+flattenJsonPathParseItem(StringInfo buf, JsonPathParseItem *item,
+ int nestingLevel, bool insideArraySubscript)
+{
+ /* position from begining of jsonpath data */
+ int32 pos = buf->len - JSONPATH_HDRSZ;
+ int32 chld;
+ int32 next;
+ int argNestingLevel = 0;
+
+ check_stack_depth();
+ CHECK_FOR_INTERRUPTS();
+
+ appendStringInfoChar(buf, (char)(item->type));
+ alignStringInfoInt(buf);
+
+ next = (item->next) ? buf->len : 0;
+
+ /*
+ * actual value will be recorded later, after next and
+ * children processing
+ */
+ appendBinaryStringInfo(buf, (char*)&next /* fake value */, sizeof(next));
+
+ switch(item->type)
+ {
+ case jpiString:
+ case jpiVariable:
+ case jpiKey:
+ appendBinaryStringInfo(buf, (char*)&item->value.string.len,
+ sizeof(item->value.string.len));
+ appendBinaryStringInfo(buf, item->value.string.val, item->value.string.len);
+ appendStringInfoChar(buf, '\0');
+ break;
+ case jpiNumeric:
+ appendBinaryStringInfo(buf, (char*)item->value.numeric,
+ VARSIZE(item->value.numeric));
+ break;
+ case jpiBool:
+ appendBinaryStringInfo(buf, (char*)&item->value.boolean,
+ sizeof(item->value.boolean));
+ break;
+ case jpiAnd:
+ case jpiOr:
+ case jpiEqual:
+ case jpiNotEqual:
+ case jpiLess:
+ case jpiGreater:
+ case jpiLessOrEqual:
+ case jpiGreaterOrEqual:
+ case jpiAdd:
+ case jpiSub:
+ case jpiMul:
+ case jpiDiv:
+ case jpiMod:
+ case jpiStartsWith:
+ case jpiDatetime:
+ {
+ int32 left, right;
+
+ left = buf->len;
+
+ /*
+ * first, reserve place for left/right arg's positions, then
+ * record both args and sets actual position in reserved places
+ */
+ appendBinaryStringInfo(buf, (char*)&left /* fake value */, sizeof(left));
+ right = buf->len;
+ appendBinaryStringInfo(buf, (char*)&right /* fake value */, sizeof(right));
+
+ chld = !item->value.args.left ? pos :
+ flattenJsonPathParseItem(buf, item->value.args.left,
+ nestingLevel + argNestingLevel,
+ insideArraySubscript);
+ *(int32*)(buf->data + left) = chld - pos;
+ chld = !item->value.args.right ? pos :
+ flattenJsonPathParseItem(buf, item->value.args.right,
+ nestingLevel + argNestingLevel,
+ insideArraySubscript);
+ *(int32*)(buf->data + right) = chld - pos;
+ }
+ break;
+ case jpiLikeRegex:
+ {
+ int32 offs;
+
+ appendBinaryStringInfo(buf,
+ (char *) &item->value.like_regex.flags,
+ sizeof(item->value.like_regex.flags));
+ offs = buf->len;
+ appendBinaryStringInfo(buf, (char *) &offs /* fake value */, sizeof(offs));
+
+ appendBinaryStringInfo(buf,
+ (char *) &item->value.like_regex.patternlen,
+ sizeof(item->value.like_regex.patternlen));
+ appendBinaryStringInfo(buf, item->value.like_regex.pattern,
+ item->value.like_regex.patternlen);
+ appendStringInfoChar(buf, '\0');
+
+ chld = flattenJsonPathParseItem(buf, item->value.like_regex.expr,
+ nestingLevel,
+ insideArraySubscript);
+ *(int32 *)(buf->data + offs) = chld - pos;
+ }
+ break;
+ case jpiFilter:
+ argNestingLevel++;
+ /* fall through */
+ case jpiIsUnknown:
+ case jpiNot:
+ case jpiPlus:
+ case jpiMinus:
+ case jpiExists:
+ {
+ int32 arg;
+
+ arg = buf->len;
+ appendBinaryStringInfo(buf, (char*)&arg /* fake value */, sizeof(arg));
+
+ chld = flattenJsonPathParseItem(buf, item->value.arg,
+ nestingLevel + argNestingLevel,
+ insideArraySubscript);
+ *(int32*)(buf->data + arg) = chld - pos;
+ }
+ break;
+ case jpiNull:
+ break;
+ case jpiRoot:
+ break;
+ case jpiAnyArray:
+ case jpiAnyKey:
+ break;
+ case jpiCurrent:
+ if (nestingLevel <= 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("@ is not allowed in root expressions")));
+ break;
+ case jpiLast:
+ if (!insideArraySubscript)
+ ereport(ERROR,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("LAST is allowed only in array subscripts")));
+ break;
+ case jpiIndexArray:
+ {
+ int32 nelems = item->value.array.nelems;
+ int offset;
+ int i;
+
+ appendBinaryStringInfo(buf, (char *) &nelems, sizeof(nelems));
+
+ offset = buf->len;
+
+ appendStringInfoSpaces(buf, sizeof(int32) * 2 * nelems);
+
+ for (i = 0; i < nelems; i++)
+ {
+ int32 *ppos;
+ int32 topos;
+ int32 frompos =
+ flattenJsonPathParseItem(buf,
+ item->value.array.elems[i].from,
+ nestingLevel, true) - pos;
+
+ if (item->value.array.elems[i].to)
+ topos = flattenJsonPathParseItem(buf,
+ item->value.array.elems[i].to,
+ nestingLevel, true) - pos;
+ else
+ topos = 0;
+
+ ppos = (int32 *) &buf->data[offset + i * 2 * sizeof(int32)];
+
+ ppos[0] = frompos;
+ ppos[1] = topos;
+ }
+ }
+ break;
+ case jpiAny:
+ appendBinaryStringInfo(buf,
+ (char*)&item->value.anybounds.first,
+ sizeof(item->value.anybounds.first));
+ appendBinaryStringInfo(buf,
+ (char*)&item->value.anybounds.last,
+ sizeof(item->value.anybounds.last));
+ break;
+ case jpiType:
+ case jpiSize:
+ case jpiAbs:
+ case jpiFloor:
+ case jpiCeiling:
+ case jpiDouble:
+ case jpiKeyValue:
+ break;
+ default:
+ elog(ERROR, "Unknown jsonpath item type: %d", item->type);
+ }
+
+ if (item->next)
+ {
+ chld = flattenJsonPathParseItem(buf, item->next, nestingLevel,
+ insideArraySubscript) - pos;
+ *(int32 *)(buf->data + next) = chld;
+ }
+
+ return pos;
+}
+
+Datum
+jsonpath_in(PG_FUNCTION_ARGS)
+{
+ char *in = PG_GETARG_CSTRING(0);
+ int32 len = strlen(in);
+ JsonPathParseResult *jsonpath = parsejsonpath(in, len);
+ JsonPath *res;
+ StringInfoData buf;
+
+ initStringInfo(&buf);
+ enlargeStringInfo(&buf, 4 * len /* estimation */);
+
+ appendStringInfoSpaces(&buf, JSONPATH_HDRSZ);
+
+ if (!jsonpath)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
+ errmsg("invalid input syntax for jsonpath: \"%s\"", in)));
+
+ flattenJsonPathParseItem(&buf, jsonpath->expr, 0, false);
+
+ res = (JsonPath*)buf.data;
+ SET_VARSIZE(res, buf.len);
+ res->header = JSONPATH_VERSION;
+ if (jsonpath->lax)
+ res->header |= JSONPATH_LAX;
+
+ PG_RETURN_JSONPATH_P(res);
+}
+
+static void
+printOperation(StringInfo buf, JsonPathItemType type)
+{
+ switch(type)
+ {
+ case jpiAnd:
+ appendBinaryStringInfo(buf, " && ", 4); break;
+ case jpiOr:
+ appendBinaryStringInfo(buf, " || ", 4); break;
+ case jpiEqual:
+ appendBinaryStringInfo(buf, " == ", 4); break;
+ case jpiNotEqual:
+ appendBinaryStringInfo(buf, " != ", 4); break;
+ case jpiLess:
+ appendBinaryStringInfo(buf, " < ", 3); break;
+ case jpiGreater:
+ appendBinaryStringInfo(buf, " > ", 3); break;
+ case jpiLessOrEqual:
+ appendBinaryStringInfo(buf, " <= ", 4); break;
+ case jpiGreaterOrEqual:
+ appendBinaryStringInfo(buf, " >= ", 4); break;
+ case jpiAdd:
+ appendBinaryStringInfo(buf, " + ", 3); break;
+ case jpiSub:
+ appendBinaryStringInfo(buf, " - ", 3); break;
+ case jpiMul:
+ appendBinaryStringInfo(buf, " * ", 3); break;
+ case jpiDiv:
+ appendBinaryStringInfo(buf, " / ", 3); break;
+ case jpiMod:
+ appendBinaryStringInfo(buf, " % ", 3); break;
+ case jpiStartsWith:
+ appendBinaryStringInfo(buf, " starts with ", 13); break;
+ default:
+ elog(ERROR, "Unknown jsonpath item type: %d", type);
+ }
+}
+
+static int
+operationPriority(JsonPathItemType op)
+{
+ switch (op)
+ {
+ case jpiOr:
+ return 0;
+ case jpiAnd:
+ return 1;
+ case jpiEqual:
+ case jpiNotEqual:
+ case jpiLess:
+ case jpiGreater:
+ case jpiLessOrEqual:
+ case jpiGreaterOrEqual:
+ case jpiStartsWith:
+ return 2;
+ case jpiAdd:
+ case jpiSub:
+ return 3;
+ case jpiMul:
+ case jpiDiv:
+ case jpiMod:
+ return 4;
+ case jpiPlus:
+ case jpiMinus:
+ return 5;
+ default:
+ return 6;
+ }
+}
+
+static void
+printJsonPathItem(StringInfo buf, JsonPathItem *v, bool inKey, bool printBracketes)
+{
+ JsonPathItem elem;
+ int i;
+
+ check_stack_depth();
+
+ switch(v->type)
+ {
+ case jpiNull:
+ appendStringInfoString(buf, "null");
+ break;
+ case jpiKey:
+ if (inKey)
+ appendStringInfoChar(buf, '.');
+ escape_json(buf, jspGetString(v, NULL));
+ break;
+ case jpiString:
+ escape_json(buf, jspGetString(v, NULL));
+ break;
+ case jpiVariable:
+ appendStringInfoChar(buf, '$');
+ escape_json(buf, jspGetString(v, NULL));
+ break;
+ case jpiNumeric:
+ appendStringInfoString(buf,
+ DatumGetCString(DirectFunctionCall1(numeric_out,
+ PointerGetDatum(jspGetNumeric(v)))));
+ break;
+ case jpiBool:
+ if (jspGetBool(v))
+ appendBinaryStringInfo(buf, "true", 4);
+ else
+ appendBinaryStringInfo(buf, "false", 5);
+ break;
+ case jpiAnd:
+ case jpiOr:
+ case jpiEqual:
+ case jpiNotEqual:
+ case jpiLess:
+ case jpiGreater:
+ case jpiLessOrEqual:
+ case jpiGreaterOrEqual:
+ case jpiAdd:
+ case jpiSub:
+ case jpiMul:
+ case jpiDiv:
+ case jpiMod:
+ case jpiStartsWith:
+ if (printBracketes)
+ appendStringInfoChar(buf, '(');
+ jspGetLeftArg(v, &elem);
+ printJsonPathItem(buf, &elem, false,
+ operationPriority(elem.type) <=
+ operationPriority(v->type));
+ printOperation(buf, v->type);
+ jspGetRightArg(v, &elem);
+ printJsonPathItem(buf, &elem, false,
+ operationPriority(elem.type) <=
+ operationPriority(v->type));
+ if (printBracketes)
+ appendStringInfoChar(buf, ')');
+ break;
+ case jpiLikeRegex:
+ if (printBracketes)
+ appendStringInfoChar(buf, '(');
+
+ jspInitByBuffer(&elem, v->base, v->content.like_regex.expr);
+ printJsonPathItem(buf, &elem, false,
+ operationPriority(elem.type) <=
+ operationPriority(v->type));
+
+ appendBinaryStringInfo(buf, " like_regex ", 12);
+
+ escape_json(buf, v->content.like_regex.pattern);
+
+ if (v->content.like_regex.flags)
+ {
+ appendBinaryStringInfo(buf, " flag \"", 7);
+
+ if (v->content.like_regex.flags & JSP_REGEX_ICASE)
+ appendStringInfoChar(buf, 'i');
+ if (v->content.like_regex.flags & JSP_REGEX_SLINE)
+ appendStringInfoChar(buf, 's');
+ if (v->content.like_regex.flags & JSP_REGEX_MLINE)
+ appendStringInfoChar(buf, 'm');
+ if (v->content.like_regex.flags & JSP_REGEX_WSPACE)
+ appendStringInfoChar(buf, 'x');
+
+ appendStringInfoChar(buf, '"');
+ }
+
+ if (printBracketes)
+ appendStringInfoChar(buf, ')');
+ break;
+ case jpiPlus:
+ case jpiMinus:
+ if (printBracketes)
+ appendStringInfoChar(buf, '(');
+ appendStringInfoChar(buf, v->type == jpiPlus ? '+' : '-');
+ jspGetArg(v, &elem);
+ printJsonPathItem(buf, &elem, false,
+ operationPriority(elem.type) <=
+ operationPriority(v->type));
+ if (printBracketes)
+ appendStringInfoChar(buf, ')');
+ break;
+ case jpiFilter:
+ appendBinaryStringInfo(buf, "?(", 2);
+ jspGetArg(v, &elem);
+ printJsonPathItem(buf, &elem, false, false);
+ appendStringInfoChar(buf, ')');
+ break;
+ case jpiNot:
+ appendBinaryStringInfo(buf, "!(", 2);
+ jspGetArg(v, &elem);
+ printJsonPathItem(buf, &elem, false, false);
+ appendStringInfoChar(buf, ')');
+ break;
+ case jpiIsUnknown:
+ appendStringInfoChar(buf, '(');
+ jspGetArg(v, &elem);
+ printJsonPathItem(buf, &elem, false, false);
+ appendBinaryStringInfo(buf, ") is unknown", 12);
+ break;
+ case jpiExists:
+ appendBinaryStringInfo(buf,"exists (", 8);
+ jspGetArg(v, &elem);
+ printJsonPathItem(buf, &elem, false, false);
+ appendStringInfoChar(buf, ')');
+ break;
+ case jpiCurrent:
+ Assert(!inKey);
+ appendStringInfoChar(buf, '@');
+ break;
+ case jpiRoot:
+ Assert(!inKey);
+ appendStringInfoChar(buf, '$');
+ break;
+ case jpiLast:
+ appendBinaryStringInfo(buf, "last", 4);
+ break;
+ case jpiAnyArray:
+ appendBinaryStringInfo(buf, "[*]", 3);
+ break;
+ case jpiAnyKey:
+ if (inKey)
+ appendStringInfoChar(buf, '.');
+ appendStringInfoChar(buf, '*');
+ break;
+ case jpiIndexArray:
+ appendStringInfoChar(buf, '[');
+ for (i = 0; i < v->content.array.nelems; i++)
+ {
+ JsonPathItem from;
+ JsonPathItem to;
+ bool range = jspGetArraySubscript(v, &from, &to, i);
+
+ if (i)
+ appendStringInfoChar(buf, ',');
+
+ printJsonPathItem(buf, &from, false, false);
+
+ if (range)
+ {
+ appendBinaryStringInfo(buf, " to ", 4);
+ printJsonPathItem(buf, &to, false, false);
+ }
+ }
+ appendStringInfoChar(buf, ']');
+ break;
+ case jpiAny:
+ if (inKey)
+ appendStringInfoChar(buf, '.');
+
+ if (v->content.anybounds.first == 0 &&
+ v->content.anybounds.last == PG_UINT32_MAX)
+ appendBinaryStringInfo(buf, "**", 2);
+ else if (v->content.anybounds.first == v->content.anybounds.last)
+ {
+ if (v->content.anybounds.first == PG_UINT32_MAX)
+ appendStringInfo(buf, "**{last}");
+ else
+ appendStringInfo(buf, "**{%u}", v->content.anybounds.first);
+ }
+ else if (v->content.anybounds.first == PG_UINT32_MAX)
+ appendStringInfo(buf, "**{last to %u}", v->content.anybounds.last);
+ else if (v->content.anybounds.last == PG_UINT32_MAX)
+ appendStringInfo(buf, "**{%u to last}", v->content.anybounds.first);
+ else
+ appendStringInfo(buf, "**{%u to %u}", v->content.anybounds.first,
+ v->content.anybounds.last);
+ break;
+ case jpiType:
+ appendBinaryStringInfo(buf, ".type()", 7);
+ break;
+ case jpiSize:
+ appendBinaryStringInfo(buf, ".size()", 7);
+ break;
+ case jpiAbs:
+ appendBinaryStringInfo(buf, ".abs()", 6);
+ break;
+ case jpiFloor:
+ appendBinaryStringInfo(buf, ".floor()", 8);
+ break;
+ case jpiCeiling:
+ appendBinaryStringInfo(buf, ".ceiling()", 10);
+ break;
+ case jpiDouble:
+ appendBinaryStringInfo(buf, ".double()", 9);
+ break;
+ case jpiDatetime:
+ appendBinaryStringInfo(buf, ".datetime(", 10);
+ if (v->content.args.left)
+ {
+ jspGetLeftArg(v, &elem);
+ printJsonPathItem(buf, &elem, false, false);
+
+ if (v->content.args.right)
+ {
+ appendBinaryStringInfo(buf, ", ", 2);
+ jspGetRightArg(v, &elem);
+ printJsonPathItem(buf, &elem, false, false);
+ }
+ }
+ appendStringInfoChar(buf, ')');
+ break;
+ case jpiKeyValue:
+ appendBinaryStringInfo(buf, ".keyvalue()", 11);
+ break;
+ default:
+ elog(ERROR, "Unknown jsonpath item type: %d", v->type);
+ }
+
+ if (jspGetNext(v, &elem))
+ printJsonPathItem(buf, &elem, true, true);
+}
+
+Datum
+jsonpath_out(PG_FUNCTION_ARGS)
+{
+ JsonPath *in = PG_GETARG_JSONPATH_P(0);
+ StringInfoData buf;
+ JsonPathItem v;
+
+ initStringInfo(&buf);
+ enlargeStringInfo(&buf, VARSIZE(in) /* estimation */);
+
+ if (!(in->header & JSONPATH_LAX))
+ appendBinaryStringInfo(&buf, "strict ", 7);
+
+ jspInit(&v, in);
+ printJsonPathItem(&buf, &v, false, true);
+
+ PG_RETURN_CSTRING(buf.data);
+}
+
+/********************Support functions for JsonPath****************************/
+
+/*
+ * Support macroses to read stored values
+ */
+
+#define read_byte(v, b, p) do { \
+ (v) = *(uint8*)((b) + (p)); \
+ (p) += 1; \
+} while(0) \
+
+#define read_int32(v, b, p) do { \
+ (v) = *(uint32*)((b) + (p)); \
+ (p) += sizeof(int32); \
+} while(0) \
+
+#define read_int32_n(v, b, p, n) do { \
+ (v) = (void *)((b) + (p)); \
+ (p) += sizeof(int32) * (n); \
+} while(0) \
+
+/*
+ * Read root node and fill root node representation
+ */
+void
+jspInit(JsonPathItem *v, JsonPath *js)
+{
+ Assert((js->header & ~JSONPATH_LAX) == JSONPATH_VERSION);
+ jspInitByBuffer(v, js->data, 0);
+}
+
+/*
+ * Read node from buffer and fill its representation
+ */
+void
+jspInitByBuffer(JsonPathItem *v, char *base, int32 pos)
+{
+ v->base = base + pos;
+
+ read_byte(v->type, base, pos);
+ pos = INTALIGN((uintptr_t)(base + pos)) - (uintptr_t) base;
+ read_int32(v->nextPos, base, pos);
+
+ switch(v->type)
+ {
+ case jpiNull:
+ case jpiRoot:
+ case jpiCurrent:
+ case jpiAnyArray:
+ case jpiAnyKey:
+ case jpiType:
+ case jpiSize:
+ case jpiAbs:
+ case jpiFloor:
+ case jpiCeiling:
+ case jpiDouble:
+ case jpiKeyValue:
+ case jpiLast:
+ break;
+ case jpiKey:
+ case jpiString:
+ case jpiVariable:
+ read_int32(v->content.value.datalen, base, pos);
+ /* follow next */
+ case jpiNumeric:
+ case jpiBool:
+ v->content.value.data = base + pos;
+ break;
+ case jpiAnd:
+ case jpiOr:
+ case jpiAdd:
+ case jpiSub:
+ case jpiMul:
+ case jpiDiv:
+ case jpiMod:
+ case jpiEqual:
+ case jpiNotEqual:
+ case jpiLess:
+ case jpiGreater:
+ case jpiLessOrEqual:
+ case jpiGreaterOrEqual:
+ case jpiStartsWith:
+ case jpiDatetime:
+ read_int32(v->content.args.left, base, pos);
+ read_int32(v->content.args.right, base, pos);
+ break;
+ case jpiLikeRegex:
+ read_int32(v->content.like_regex.flags, base, pos);
+ read_int32(v->content.like_regex.expr, base, pos);
+ read_int32(v->content.like_regex.patternlen, base, pos);
+ v->content.like_regex.pattern = base + pos;
+ break;
+ case jpiNot:
+ case jpiExists:
+ case jpiIsUnknown:
+ case jpiPlus:
+ case jpiMinus:
+ case jpiFilter:
+ read_int32(v->content.arg, base, pos);
+ break;
+ case jpiIndexArray:
+ read_int32(v->content.array.nelems, base, pos);
+ read_int32_n(v->content.array.elems, base, pos,
+ v->content.array.nelems * 2);
+ break;
+ case jpiAny:
+ read_int32(v->content.anybounds.first, base, pos);
+ read_int32(v->content.anybounds.last, base, pos);
+ break;
+ default:
+ elog(ERROR, "Unknown jsonpath item type: %d", v->type);
+ }
+}
+
+void
+jspGetArg(JsonPathItem *v, JsonPathItem *a)
+{
+ Assert(
+ v->type == jpiFilter ||
+ v->type == jpiNot ||
+ v->type == jpiIsUnknown ||
+ v->type == jpiExists ||
+ v->type == jpiPlus ||
+ v->type == jpiMinus
+ );
+
+ jspInitByBuffer(a, v->base, v->content.arg);
+}
+
+bool
+jspGetNext(JsonPathItem *v, JsonPathItem *a)
+{
+ if (jspHasNext(v))
+ {
+ Assert(
+ v->type == jpiString ||
+ v->type == jpiNumeric ||
+ v->type == jpiBool ||
+ v->type == jpiNull ||
+ v->type == jpiKey ||
+ v->type == jpiAny ||
+ v->type == jpiAnyArray ||
+ v->type == jpiAnyKey ||
+ v->type == jpiIndexArray ||
+ v->type == jpiFilter ||
+ v->type == jpiCurrent ||
+ v->type == jpiExists ||
+ v->type == jpiRoot ||
+ v->type == jpiVariable ||
+ v->type == jpiLast ||
+ v->type == jpiAdd ||
+ v->type == jpiSub ||
+ v->type == jpiMul ||
+ v->type == jpiDiv ||
+ v->type == jpiMod ||
+ v->type == jpiPlus ||
+ v->type == jpiMinus ||
+ v->type == jpiEqual ||
+ v->type == jpiNotEqual ||
+ v->type == jpiGreater ||
+ v->type == jpiGreaterOrEqual ||
+ v->type == jpiLess ||
+ v->type == jpiLessOrEqual ||
+ v->type == jpiAnd ||
+ v->type == jpiOr ||
+ v->type == jpiNot ||
+ v->type == jpiIsUnknown ||
+ v->type == jpiType ||
+ v->type == jpiSize ||
+ v->type == jpiAbs ||
+ v->type == jpiFloor ||
+ v->type == jpiCeiling ||
+ v->type == jpiDouble ||
+ v->type == jpiDatetime ||
+ v->type == jpiKeyValue ||
+ v->type == jpiStartsWith
+ );
+
+ if (a)
+ jspInitByBuffer(a, v->base, v->nextPos);
+ return true;
+ }
+
+ return false;
+}
+
+void
+jspGetLeftArg(JsonPathItem *v, JsonPathItem *a)
+{
+ Assert(
+ v->type == jpiAnd ||
+ v->type == jpiOr ||
+ v->type == jpiEqual ||
+ v->type == jpiNotEqual ||
+ v->type == jpiLess ||
+ v->type == jpiGreater ||
+ v->type == jpiLessOrEqual ||
+ v->type == jpiGreaterOrEqual ||
+ v->type == jpiAdd ||
+ v->type == jpiSub ||
+ v->type == jpiMul ||
+ v->type == jpiDiv ||
+ v->type == jpiMod ||
+ v->type == jpiDatetime ||
+ v->type == jpiStartsWith
+ );
+
+ jspInitByBuffer(a, v->base, v->content.args.left);
+}
+
+void
+jspGetRightArg(JsonPathItem *v, JsonPathItem *a)
+{
+ Assert(
+ v->type == jpiAnd ||
+ v->type == jpiOr ||
+ v->type == jpiEqual ||
+ v->type == jpiNotEqual ||
+ v->type == jpiLess ||
+ v->type == jpiGreater ||
+ v->type == jpiLessOrEqual ||
+ v->type == jpiGreaterOrEqual ||
+ v->type == jpiAdd ||
+ v->type == jpiSub ||
+ v->type == jpiMul ||
+ v->type == jpiDiv ||
+ v->type == jpiMod ||
+ v->type == jpiDatetime ||
+ v->type == jpiStartsWith
+ );
+
+ jspInitByBuffer(a, v->base, v->content.args.right);
+}
+
+bool
+jspGetBool(JsonPathItem *v)
+{
+ Assert(v->type == jpiBool);
+
+ return (bool)*v->content.value.data;
+}
+
+Numeric
+jspGetNumeric(JsonPathItem *v)
+{
+ Assert(v->type == jpiNumeric);
+
+ return (Numeric)v->content.value.data;
+}
+
+char*
+jspGetString(JsonPathItem *v, int32 *len)
+{
+ Assert(
+ v->type == jpiKey ||
+ v->type == jpiString ||
+ v->type == jpiVariable
+ );
+
+ if (len)
+ *len = v->content.value.datalen;
+ return v->content.value.data;
+}
+
+bool
+jspGetArraySubscript(JsonPathItem *v, JsonPathItem *from, JsonPathItem *to,
+ int i)
+{
+ Assert(v->type == jpiIndexArray);
+
+ jspInitByBuffer(from, v->base, v->content.array.elems[i].from);
+
+ if (!v->content.array.elems[i].to)
+ return false;
+
+ jspInitByBuffer(to, v->base, v->content.array.elems[i].to);
+
+ return true;
+}
diff --git a/src/backend/utils/adt/jsonpath_exec.c b/src/backend/utils/adt/jsonpath_exec.c
new file mode 100644
index 0000000..ecbde61
--- /dev/null
+++ b/src/backend/utils/adt/jsonpath_exec.c
@@ -0,0 +1,2805 @@
+/*-------------------------------------------------------------------------
+ *
+ * jsonpath_exec.c
+ * Routines for SQL/JSON path execution.
+ *
+ * Copyright (c) 2019, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ * src/backend/utils/adt/jsonpath_exec.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include "postgres.h"
+
+#include "catalog/pg_collation.h"
+#include "catalog/pg_type.h"
+#include "funcapi.h"
+#include "lib/stringinfo.h"
+#include "miscadmin.h"
+#include "regex/regex.h"
+#include "utils/builtins.h"
+#include "utils/datum.h"
+#include "utils/formatting.h"
+#include "utils/json.h"
+#include "utils/jsonpath.h"
+#include "utils/varlena.h"
+
+/* Special pseudo-ErrorData with zero sqlerrcode for existence queries. */
+ErrorData jperNotFound[1];
+
+typedef struct JsonBaseObjectInfo
+{
+ JsonbContainer *jbc;
+ int id;
+} JsonBaseObjectInfo;
+
+typedef struct JsonItemStackEntry
+{
+ JsonbValue *item;
+ struct JsonItemStackEntry *parent;
+} JsonItemStackEntry;
+
+typedef JsonItemStackEntry *JsonItemStack;
+
+typedef struct JsonPathExecContext
+{
+ List *vars;
+ JsonbValue *root; /* for $ evaluation */
+ JsonItemStack stack; /* for @N evaluation */
+ JsonBaseObjectInfo baseObject; /* for .keyvalue().id evaluation */
+ int generatedObjectId;
+ int innermostArraySize; /* for LAST array index evaluation */
+ bool laxMode;
+ bool ignoreStructuralErrors;
+} JsonPathExecContext;
+
+/* strict/lax flags is decomposed into four [un]wrap/error flags */
+#define jspStrictAbsenseOfErrors(cxt) (!(cxt)->laxMode)
+#define jspAutoUnwrap(cxt) ((cxt)->laxMode)
+#define jspAutoWrap(cxt) ((cxt)->laxMode)
+#define jspIgnoreStructuralErrors(cxt) ((cxt)->ignoreStructuralErrors)
+
+typedef struct JsonValueListIterator
+{
+ ListCell *lcell;
+} JsonValueListIterator;
+
+#define JsonValueListIteratorEnd ((ListCell *) -1)
+
+static inline JsonPathExecResult recursiveExecute(JsonPathExecContext *cxt,
+ JsonPathItem *jsp, JsonbValue *jb,
+ JsonValueList *found);
+
+static inline JsonPathExecResult recursiveExecuteUnwrap(JsonPathExecContext *cxt,
+ JsonPathItem *jsp, JsonbValue *jb, JsonValueList *found);
+
+
+static inline void
+JsonValueListAppend(JsonValueList *jvl, JsonbValue *jbv)
+{
+ if (jvl->singleton)
+ {
+ jvl->list = list_make2(jvl->singleton, jbv);
+ jvl->singleton = NULL;
+ }
+ else if (!jvl->list)
+ jvl->singleton = jbv;
+ else
+ jvl->list = lappend(jvl->list, jbv);
+}
+
+static inline int
+JsonValueListLength(const JsonValueList *jvl)
+{
+ return jvl->singleton ? 1 : list_length(jvl->list);
+}
+
+static inline bool
+JsonValueListIsEmpty(JsonValueList *jvl)
+{
+ return !jvl->singleton && list_length(jvl->list) <= 0;
+}
+
+static inline JsonbValue *
+JsonValueListHead(JsonValueList *jvl)
+{
+ return jvl->singleton ? jvl->singleton : linitial(jvl->list);
+}
+
+static inline List *
+JsonValueListGetList(JsonValueList *jvl)
+{
+ if (jvl->singleton)
+ return list_make1(jvl->singleton);
+
+ return jvl->list;
+}
+
+/*
+ * Get the next item from the sequence advancing iterator.
+ */
+static inline JsonbValue *
+JsonValueListNext(const JsonValueList *jvl, JsonValueListIterator *it)
+{
+ if (it->lcell == JsonValueListIteratorEnd)
+ return NULL;
+
+ if (it->lcell)
+ it->lcell = lnext(it->lcell);
+ else
+ {
+ if (jvl->singleton)
+ {
+ it->lcell = JsonValueListIteratorEnd;
+ return jvl->singleton;
+ }
+
+ it->lcell = list_head(jvl->list);
+ }
+
+ if (!it->lcell)
+ {
+ it->lcell = JsonValueListIteratorEnd;
+ return NULL;
+ }
+
+ return lfirst(it->lcell);
+}
+
+/*
+ * Initialize a binary JsonbValue with the given jsonb container.
+ */
+static inline JsonbValue *
+JsonbInitBinary(JsonbValue *jbv, Jsonb *jb)
+{
+ jbv->type = jbvBinary;
+ jbv->val.binary.data = &jb->root;
+ jbv->val.binary.len = VARSIZE_ANY_EXHDR(jb);
+
+ return jbv;
+}
+
+/*
+ * Transform a JsonbValue into a binary JsonbValue by encoding it to a
+ * binary jsonb container.
+ */
+static inline JsonbValue *
+JsonbWrapInBinary(JsonbValue *jbv, JsonbValue *out)
+{
+ Jsonb *jb = JsonbValueToJsonb(jbv);
+
+ if (!out)
+ out = palloc(sizeof(*out));
+
+ return JsonbInitBinary(out, jb);
+}
+
+/*
+ * Returns jbv* type of of JsonbValue. Note, it never returns
+ * jbvBinary as is - jbvBinary is used as mark of store naked
+ * scalar value. To improve readability it defines jbvScalar
+ * as alias to jbvBinary
+ */
+#define jbvScalar jbvBinary
+static inline int
+JsonbType(JsonbValue *jb)
+{
+ int type = jb->type;
+
+ if (jb->type == jbvBinary)
+ {
+ JsonbContainer *jbc = (void *) jb->val.binary.data;
+
+ if (JsonContainerIsScalar(jbc))
+ type = jbvScalar;
+ else if (JsonContainerIsObject(jbc))
+ type = jbvObject;
+ else if (JsonContainerIsArray(jbc))
+ type = jbvArray;
+ else
+ elog(ERROR, "Unknown container type: 0x%08x", jbc->header);
+ }
+
+ return type;
+}
+
+static inline void
+pushJsonItem(JsonItemStack *stack, JsonItemStackEntry *entry, JsonbValue *item)
+{
+ entry->item = item;
+ entry->parent = *stack;
+ *stack = entry;
+}
+
+static inline void
+popJsonItem(JsonItemStack *stack)
+{
+ *stack = (*stack)->parent;
+}
+
+static inline JsonbValue *
+extractScalar(JsonbValue *scalar, JsonbValue *buf)
+{
+ if (scalar->type == jbvBinary &&
+ JsonContainerIsScalar(scalar->val.binary.data))
+ scalar = JsonbExtractScalar(scalar->val.binary.data, buf);
+
+ return scalar;
+}
+
+static inline JsonbValue *
+getScalar(JsonbValue *scalar, JsonbValue *buf, int type)
+{
+ scalar = extractScalar(scalar, buf);
+
+ return scalar->type == type ? scalar : NULL;
+}
+
+/* Construct a JSON array from the item list */
+static inline JsonbValue *
+wrapItemsInArray(const JsonValueList *items)
+{
+ JsonbParseState *ps = NULL;
+ JsonValueListIterator it = { 0 };
+ JsonbValue *jbv;
+
+ pushJsonbValue(&ps, WJB_BEGIN_ARRAY, NULL);
+
+ while ((jbv = JsonValueListNext(items, &it)))
+ {
+ JsonbValue bin;
+
+ jbv = extractScalar(jbv, jbv);
+
+ if (jbv->type == jbvObject || jbv->type == jbvArray)
+ jbv = JsonbWrapInBinary(jbv, &bin);
+
+ pushJsonbValue(&ps, WJB_ELEM, jbv);
+ }
+
+ return pushJsonbValue(&ps, WJB_END_ARRAY, NULL);
+}
+
+/********************Execute functions for JsonPath***************************/
+
+/*
+ * Find value of jsonpath variable in a list of passing params
+ */
+static int
+computeJsonPathVariable(JsonPathItem *variable, List *vars, JsonbValue *value)
+{
+ ListCell *cell;
+ JsonPathVariable *var = NULL;
+ bool isNull;
+ Datum computedValue;
+ char *varName;
+ int varNameLength;
+ int varId = 1;
+
+ Assert(variable->type == jpiVariable);
+ varName = jspGetString(variable, &varNameLength);
+
+ foreach(cell, vars)
+ {
+ var = (JsonPathVariable *) lfirst(cell);
+
+ if (varNameLength == VARSIZE_ANY_EXHDR(var->varName) &&
+ !strncmp(varName, VARDATA_ANY(var->varName), varNameLength))
+ break;
+
+ var = NULL;
+ varId++;
+ }
+
+ if (var == NULL)
+ ereport(ERROR,
+ (errcode(ERRCODE_UNDEFINED_OBJECT),
+ errmsg("could not find jsonpath variable '%s'",
+ pnstrdup(varName, varNameLength))));
+
+ computedValue = var->cb(var->cb_arg, &isNull);
+
+ if (isNull)
+ {
+ value->type = jbvNull;
+ return varId;
+ }
+
+ switch (var->typid)
+ {
+ case BOOLOID:
+ value->type = jbvBool;
+ value->val.boolean = DatumGetBool(computedValue);
+ break;
+ case NUMERICOID:
+ value->type = jbvNumeric;
+ value->val.numeric = DatumGetNumeric(computedValue);
+ break;
+ break;
+ case INT2OID:
+ value->type = jbvNumeric;
+ value->val.numeric = DatumGetNumeric(DirectFunctionCall1(
+ int2_numeric, computedValue));
+ break;
+ case INT4OID:
+ value->type = jbvNumeric;
+ value->val.numeric = DatumGetNumeric(DirectFunctionCall1(
+ int4_numeric, computedValue));
+ break;
+ case INT8OID:
+ value->type = jbvNumeric;
+ value->val.numeric = DatumGetNumeric(DirectFunctionCall1(
+ int8_numeric, computedValue));
+ break;
+ case FLOAT4OID:
+ value->type = jbvNumeric;
+ value->val.numeric = DatumGetNumeric(DirectFunctionCall1(
+ float4_numeric, computedValue));
+ break;
+ case FLOAT8OID:
+ value->type = jbvNumeric;
+ value->val.numeric = DatumGetNumeric(DirectFunctionCall1(
+ float4_numeric, computedValue));
+ break;
+ case TEXTOID:
+ case VARCHAROID:
+ value->type = jbvString;
+ value->val.string.val = VARDATA_ANY(computedValue);
+ value->val.string.len = VARSIZE_ANY_EXHDR(computedValue);
+ break;
+ case DATEOID:
+ case TIMEOID:
+ case TIMETZOID:
+ case TIMESTAMPOID:
+ case TIMESTAMPTZOID:
+ value->type = jbvDatetime;
+ value->val.datetime.typid = var->typid;
+ value->val.datetime.typmod = var->typmod;
+ value->val.datetime.tz = 0;
+ value->val.datetime.value = computedValue;
+ break;
+ case JSONBOID:
+ {
+ Jsonb *jb = DatumGetJsonbP(computedValue);
+
+ if (JB_ROOT_IS_SCALAR(jb))
+ JsonbExtractScalar(&jb->root, value);
+ else
+ JsonbInitBinary(value, jb);
+ }
+ break;
+ case (Oid) -1: /* raw JsonbValue */
+ *value = *(JsonbValue *) DatumGetPointer(computedValue);
+ break;
+ default:
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("only bool, numeric and text types could be casted to supported jsonpath types")));
+ }
+
+ return varId;
+}
+
+/*
+ * Convert jsonpath's scalar or variable node to actual jsonb value.
+ *
+ * If node is a variable then its id returned, otherwise 0 returned.
+ */
+static int
+computeJsonPathItem(JsonPathExecContext *cxt, JsonPathItem *item, JsonbValue *value)
+{
+ switch (item->type)
+ {
+ case jpiNull:
+ value->type = jbvNull;
+ break;
+ case jpiBool:
+ value->type = jbvBool;
+ value->val.boolean = jspGetBool(item);
+ break;
+ case jpiNumeric:
+ value->type = jbvNumeric;
+ value->val.numeric = jspGetNumeric(item);
+ break;
+ case jpiString:
+ value->type = jbvString;
+ value->val.string.val = jspGetString(item, &value->val.string.len);
+ break;
+ case jpiVariable:
+ return computeJsonPathVariable(item, cxt->vars, value);
+ default:
+ elog(ERROR, "unexpected jsonpath item type");
+ }
+
+ return 0;
+}
+
+
+/*
+ * Get the type name of a SQL/JSON item.
+ */
+static const char *
+JsonbTypeName(JsonbValue *jb)
+{
+ JsonbValue jbvbuf;
+
+ if (jb->type == jbvBinary)
+ {
+ JsonbContainer *jbc = jb->val.binary.data;
+
+ if (JsonContainerIsScalar(jbc))
+ jb = JsonbExtractScalar(jbc, &jbvbuf);
+ else if (JsonContainerIsArray(jbc))
+ return "array";
+ else if (JsonContainerIsObject(jbc))
+ return "object";
+ else
+ elog(ERROR, "Unknown container type: 0x%08x", jbc->header);
+ }
+
+ switch (jb->type)
+ {
+ case jbvObject:
+ return "object";
+ case jbvArray:
+ return "array";
+ case jbvNumeric:
+ return "number";
+ case jbvString:
+ return "string";
+ case jbvBool:
+ return "boolean";
+ case jbvNull:
+ return "null";
+ case jbvDatetime:
+ switch (jb->val.datetime.typid)
+ {
+ case DATEOID:
+ return "date";
+ case TIMEOID:
+ return "time without time zone";
+ case TIMETZOID:
+ return "time with time zone";
+ case TIMESTAMPOID:
+ return "timestamp without time zone";
+ case TIMESTAMPTZOID:
+ return "timestamp with time zone";
+ default:
+ elog(ERROR, "unknown jsonb value datetime type oid %d",
+ jb->val.datetime.typid);
+ }
+ return "unknown";
+ default:
+ elog(ERROR, "Unknown jsonb value type: %d", jb->type);
+ return "unknown";
+ }
+}
+
+/*
+ * Returns the size of an array item, or -1 if item is not an array.
+ */
+static int
+JsonbArraySize(JsonbValue *jb)
+{
+ if (jb->type == jbvArray)
+ return jb->val.array.nElems;
+
+ if (jb->type == jbvBinary)
+ {
+ JsonbContainer *jbc = jb->val.binary.data;
+
+ if (JsonContainerIsArray(jbc) && !JsonContainerIsScalar(jbc))
+ return JsonContainerSize(jbc);
+ }
+
+ return -1;
+}
+
+/*
+ * Compare two numerics.
+ */
+static int
+compareNumeric(Numeric a, Numeric b)
+{
+ return DatumGetInt32(
+ DirectFunctionCall2(
+ numeric_cmp,
+ PointerGetDatum(a),
+ PointerGetDatum(b)
+ )
+ );
+}
+
+/*
+ * Cross-type comparison of two datetime SQL/JSON items. If items are
+ * uncomparable, 'error' flag is set.
+ */
+static int
+compareDatetime(Datum val1, Oid typid1, Datum val2, Oid typid2, bool *error)
+{
+ PGFunction cmpfunc = NULL;
+
+ switch (typid1)
+ {
+ case DATEOID:
+ switch (typid2)
+ {
+ case DATEOID:
+ cmpfunc = date_cmp;
+ break;
+ case TIMESTAMPOID:
+ cmpfunc = date_cmp_timestamp;
+ break;
+ case TIMESTAMPTZOID:
+ cmpfunc = date_cmp_timestamptz;
+ break;
+ case TIMEOID:
+ case TIMETZOID:
+ *error = true;
+ return 0;
+ }
+ break;
+
+ case TIMEOID:
+ switch (typid2)
+ {
+ case TIMEOID:
+ cmpfunc = time_cmp;
+ break;
+ case TIMETZOID:
+ val1 = DirectFunctionCall1(time_timetz, val1);
+ cmpfunc = timetz_cmp;
+ break;
+ case DATEOID:
+ case TIMESTAMPOID:
+ case TIMESTAMPTZOID:
+ *error = true;
+ return 0;
+ }
+ break;
+
+ case TIMETZOID:
+ switch (typid2)
+ {
+ case TIMEOID:
+ val2 = DirectFunctionCall1(time_timetz, val2);
+ cmpfunc = timetz_cmp;
+ break;
+ case TIMETZOID:
+ cmpfunc = timetz_cmp;
+ break;
+ case DATEOID:
+ case TIMESTAMPOID:
+ case TIMESTAMPTZOID:
+ *error = true;
+ return 0;
+ }
+ break;
+
+ case TIMESTAMPOID:
+ switch (typid2)
+ {
+ case DATEOID:
+ cmpfunc = timestamp_cmp_date;
+ break;
+ case TIMESTAMPOID:
+ cmpfunc = timestamp_cmp;
+ break;
+ case TIMESTAMPTZOID:
+ cmpfunc = timestamp_cmp_timestamptz;
+ break;
+ case TIMEOID:
+ case TIMETZOID:
+ *error = true;
+ return 0;
+ }
+ break;
+
+ case TIMESTAMPTZOID:
+ switch (typid2)
+ {
+ case DATEOID:
+ cmpfunc = timestamptz_cmp_date;
+ break;
+ case TIMESTAMPOID:
+ cmpfunc = timestamptz_cmp_timestamp;
+ break;
+ case TIMESTAMPTZOID:
+ cmpfunc = timestamp_cmp;
+ break;
+ case TIMEOID:
+ case TIMETZOID:
+ *error = true;
+ return 0;
+ }
+ break;
+
+ default:
+ elog(ERROR, "unknown SQL/JSON datetime type oid: %d", typid1);
+ }
+
+ if (!cmpfunc)
+ elog(ERROR, "unknown SQL/JSON datetime type oid: %d", typid2);
+
+ *error = false;
+
+ return DatumGetInt32(DirectFunctionCall2(cmpfunc, val1, val2));
+}
+
+/*
+ * Compare two SQL/JSON items using comparison operation 'op'.
+ */
+static JsonPathBool
+compareItems(int32 op, JsonbValue *jb1, JsonbValue *jb2)
+{
+ int cmp;
+ bool res;
+
+ if (jb1->type != jb2->type)
+ {
+ if (jb1->type == jbvNull || jb2->type == jbvNull)
+ /*
+ * Equality and order comparison of nulls to non-nulls returns
+ * always false, but inequality comparison returns true.
+ */
+ return op == jpiNotEqual ? jpbTrue : jpbFalse;
+
+ /* Non-null items of different types are not comparable. */
+ return jpbUnknown;
+ }
+
+ switch (jb1->type)
+ {
+ case jbvNull:
+ cmp = 0;
+ break;
+ case jbvBool:
+ cmp = jb1->val.boolean == jb2->val.boolean ? 0 :
+ jb1->val.boolean ? 1 : -1;
+ break;
+ case jbvNumeric:
+ cmp = compareNumeric(jb1->val.numeric, jb2->val.numeric);
+ break;
+ case jbvString:
+ cmp = varstr_cmp(jb1->val.string.val, jb1->val.string.len,
+ jb2->val.string.val, jb2->val.string.len,
+ DEFAULT_COLLATION_OID);
+ break;
+ case jbvDatetime:
+ {
+ bool error;
+
+ cmp = compareDatetime(jb1->val.datetime.value,
+ jb1->val.datetime.typid,
+ jb2->val.datetime.value,
+ jb2->val.datetime.typid,
+ &error);
+
+ if (error)
+ return jpbUnknown;
+ }
+ break;
+
+ case jbvBinary:
+ case jbvArray:
+ case jbvObject:
+ return jpbUnknown; /* non-scalars are not comparable */
+
+ default:
+ elog(ERROR, "invalid jsonb value type %d", jb1->type);
+ }
+
+ switch (op)
+ {
+ case jpiEqual:
+ res = (cmp == 0);
+ break;
+ case jpiNotEqual:
+ res = (cmp != 0);
+ break;
+ case jpiLess:
+ res = (cmp < 0);
+ break;
+ case jpiGreater:
+ res = (cmp > 0);
+ break;
+ case jpiLessOrEqual:
+ res = (cmp <= 0);
+ break;
+ case jpiGreaterOrEqual:
+ res = (cmp >= 0);
+ break;
+ default:
+ elog(ERROR, "Unknown jsonpath operation");
+ return jpbUnknown;
+ }
+
+ return res ? jpbTrue : jpbFalse;
+}
+
+/* Comparison predicate callback. */
+static inline JsonPathBool
+executeComparison(JsonPathItem *cmp, JsonbValue *lv, JsonbValue *rv, void *p)
+{
+ return compareItems(cmp->type, lv, rv);
+}
+
+static JsonbValue *
+copyJsonbValue(JsonbValue *src)
+{
+ JsonbValue *dst = palloc(sizeof(*dst));
+
+ *dst = *src;
+
+ return dst;
+}
+
+/*
+ * Execute next jsonpath item if it does exist.
+ */
+static inline JsonPathExecResult
+recursiveExecuteNext(JsonPathExecContext *cxt,
+ JsonPathItem *cur, JsonPathItem *next,
+ JsonbValue *v, JsonValueList *found, bool copy)
+{
+ JsonPathItem elem;
+ bool hasNext;
+
+ if (!cur)
+ hasNext = next != NULL;
+ else if (next)
+ hasNext = jspHasNext(cur);
+ else
+ {
+ next = &elem;
+ hasNext = jspGetNext(cur, next);
+ }
+
+ if (hasNext)
+ return recursiveExecute(cxt, next, v, found);
+
+ if (found)
+ JsonValueListAppend(found, copy ? copyJsonbValue(v) : v);
+
+ return jperOk;
+}
+
+/*
+ * Execute jsonpath expression and automatically unwrap each array item from
+ * the resulting sequence in lax mode.
+ */
+static inline JsonPathExecResult
+recursiveExecuteAndUnwrap(JsonPathExecContext *cxt, JsonPathItem *jsp,
+ JsonbValue *jb, JsonValueList *found)
+{
+ if (jspAutoUnwrap(cxt))
+ {
+ JsonValueList seq = { 0 };
+ JsonValueListIterator it = { 0 };
+ JsonPathExecResult res = recursiveExecute(cxt, jsp, jb, &seq);
+ JsonbValue *item;
+
+ if (jperIsError(res))
+ return res;
+
+ while ((item = JsonValueListNext(&seq, &it)))
+ {
+ if (item->type == jbvArray)
+ {
+ JsonbValue *elem = item->val.array.elems;
+ JsonbValue *last = elem + item->val.array.nElems;
+
+ for (; elem < last; elem++)
+ JsonValueListAppend(found, copyJsonbValue(elem));
+ }
+ else if (item->type == jbvBinary &&
+ JsonContainerIsArray(item->val.binary.data))
+ {
+ JsonbValue elem;
+ JsonbIterator *it = JsonbIteratorInit(item->val.binary.data);
+ JsonbIteratorToken tok;
+
+ while ((tok = JsonbIteratorNext(&it, &elem, true)) != WJB_DONE)
+ {
+ if (tok == WJB_ELEM)
+ JsonValueListAppend(found, copyJsonbValue(&elem));
+ }
+ }
+ else
+ JsonValueListAppend(found, item);
+ }
+
+ return jperOk;
+ }
+
+ return recursiveExecute(cxt, jsp, jb, found);
+}
+
+typedef JsonPathBool (*JsonPathPredicateCallback)(JsonPathItem *jsp,
+ JsonbValue *larg,
+ JsonbValue *rarg,
+ void *param);
+
+/*
+ * Execute unary or binary predicate.
+ *
+ * Predicates have existence semantics, because their operands are item
+ * sequences. Pairs of items from the left and right operand's sequences are
+ * checked. TRUE returned only if any pair satisfying the condition is found.
+ * In strict mode, even if the desired pair has already been found, all pairs
+ * still need to be examined to check the absence of errors. If any error
+ * occurs, UNKNOWN (analogous to SQL NULL) is returned.
+ */
+static inline JsonPathBool
+executePredicate(JsonPathExecContext *cxt, JsonPathItem *pred,
+ JsonPathItem *larg, JsonPathItem *rarg, JsonbValue *jb,
+ bool unwrapRightArg, JsonPathPredicateCallback exec, void *param)
+{
+ JsonPathExecResult res;
+ JsonValueListIterator lseqit = { 0 };
+ JsonValueList lseq = { 0 };
+ JsonValueList rseq = { 0 };
+ JsonbValue *lval;
+ bool error = false;
+ bool found = false;
+
+ /* Left argument is always auto-unwrapped. */
+ res = recursiveExecuteAndUnwrap(cxt, larg, jb, &lseq);
+ if (jperIsError(res))
+ return jperReplace(res, jpbUnknown);
+
+ if (rarg)
+ {
+ /* Right argument is conditionally auto-unwrapped. */
+ res = unwrapRightArg ?
+ recursiveExecuteAndUnwrap(cxt, rarg, jb, &rseq) :
+ recursiveExecute(cxt, rarg, jb, &rseq);
+
+ if (jperIsError(res))
+ return jperReplace(res, jpbUnknown);
+ }
+
+ while ((lval = JsonValueListNext(&lseq, &lseqit)))
+ {
+ JsonValueListIterator rseqit;
+ JsonbValue *rval;
+ int i = 0;
+
+ if (rarg)
+ memset(&rseqit, 0, sizeof(rseqit));
+ else
+ rval = NULL;
+
+ /* Loop only if we have right arg sequence. */
+ while (rarg ? !!(rval = JsonValueListNext(&rseq, &rseqit)) : !i++)
+ {
+ JsonPathBool res = exec(pred, lval, rval, param);
+
+ if (res == jpbUnknown)
+ {
+ if (jspStrictAbsenseOfErrors(cxt))
+ return jpbUnknown;
+
+ error = true;
+ }
+ else if (res == jpbTrue)
+ {
+ if (!jspStrictAbsenseOfErrors(cxt))
+ return jpbTrue;
+
+ found = true;
+ }
+ }
+ }
+
+ if (found) /* possible only in strict mode */
+ return jpbTrue;
+
+ if (error) /* possible only in lax mode */
+ return jpbUnknown;
+
+ return jpbFalse;
+}
+
+/*
+ * Execute binary arithmetic expression on singleton numeric operands.
+ * Array operands are automatically unwrapped in lax mode.
+ */
+static JsonPathExecResult
+executeBinaryArithmExpr(JsonPathExecContext *cxt, JsonPathItem *jsp,
+ JsonbValue *jb, JsonValueList *found)
+{
+ MemoryContext mcxt = CurrentMemoryContext;
+ JsonPathExecResult jper;
+ JsonPathItem elem;
+ JsonValueList lseq = { 0 };
+ JsonValueList rseq = { 0 };
+ JsonbValue *lval;
+ JsonbValue *rval;
+ JsonbValue lvalbuf;
+ JsonbValue rvalbuf;
+ PGFunction func;
+ Datum ldatum;
+ Datum rdatum;
+ Datum res;
+ bool hasNext;
+
+ jspGetLeftArg(jsp, &elem);
+
+ /* XXX by standard unwrapped only operands of multiplicative expressions */
+ jper = recursiveExecuteAndUnwrap(cxt, &elem, jb, &lseq);
+
+ if (jper == jperOk)
+ {
+ jspGetRightArg(jsp, &elem);
+ jper = recursiveExecuteAndUnwrap(cxt, &elem, jb, &rseq); /* XXX */
+ }
+
+ if (jper != jperOk ||
+ JsonValueListLength(&lseq) != 1 ||
+ JsonValueListLength(&rseq) != 1 ||
+ !(lval = getScalar(JsonValueListHead(&lseq), &lvalbuf, jbvNumeric)) ||
+ !(rval = getScalar(JsonValueListHead(&rseq), &rvalbuf, jbvNumeric)))
+ return jperMakeError(ERRCODE_SINGLETON_JSON_ITEM_REQUIRED);
+
+ hasNext = jspGetNext(jsp, &elem);
+
+ if (!found && !hasNext)
+ return jperOk;
+
+ ldatum = NumericGetDatum(lval->val.numeric);
+ rdatum = NumericGetDatum(rval->val.numeric);
+
+ switch (jsp->type)
+ {
+ case jpiAdd:
+ func = numeric_add;
+ break;
+ case jpiSub:
+ func = numeric_sub;
+ break;
+ case jpiMul:
+ func = numeric_mul;
+ break;
+ case jpiDiv:
+ func = numeric_div;
+ break;
+ case jpiMod:
+ func = numeric_mod;
+ break;
+ default:
+ elog(ERROR, "unknown jsonpath arithmetic operation %d", jsp->type);
+ func = NULL;
+ break;
+ }
+
+ /*
+ * It is safe to use here PG_TRY/PG_CATCH without subtransaction because no
+ * function called inside performs data modification.
+ */
+ PG_TRY();
+ {
+ res = DirectFunctionCall2(func, ldatum, rdatum);
+ }
+ PG_CATCH();
+ {
+ int errcode = geterrcode();
+ ErrorData *edata;
+
+ if (ERRCODE_TO_CATEGORY(errcode) != ERRCODE_DATA_EXCEPTION)
+ PG_RE_THROW();
+
+ MemoryContextSwitchTo(mcxt);
+ edata = CopyErrorData();
+ FlushErrorState();
+
+ return jperMakeErrorData(edata);
+ }
+ PG_END_TRY();
+
+ lval = palloc(sizeof(*lval));
+ lval->type = jbvNumeric;
+ lval->val.numeric = DatumGetNumeric(res);
+
+ return recursiveExecuteNext(cxt, jsp, &elem, lval, found, false);
+}
+
+/*
+ * Execute unary arithmetic expression for each numeric item in its operand's
+ * sequence. Array operand is automatically unwrapped in lax mode.
+ */
+static JsonPathExecResult
+executeUnaryArithmExpr(JsonPathExecContext *cxt, JsonPathItem *jsp,
+ JsonbValue *jb, JsonValueList *found)
+{
+ JsonPathExecResult jper;
+ JsonPathExecResult jper2;
+ JsonPathItem elem;
+ JsonValueList seq = { 0 };
+ JsonValueListIterator it = { 0 };
+ JsonbValue *val;
+ bool hasNext;
+
+ jspGetArg(jsp, &elem);
+ jper = recursiveExecuteAndUnwrap(cxt, &elem, jb, &seq);
+
+ if (jperIsError(jper))
+ return jperReplace(jper, jperMakeError(ERRCODE_JSON_NUMBER_NOT_FOUND));
+
+ jper = jperNotFound;
+
+ hasNext = jspGetNext(jsp, &elem);
+
+ while ((val = JsonValueListNext(&seq, &it)))
+ {
+ if ((val = getScalar(val, val, jbvNumeric)))
+ {
+ if (!found && !hasNext)
+ return jperOk;
+ }
+ else
+ {
+ if (!found && !hasNext)
+ continue; /* skip non-numerics processing */
+
+ return jperMakeError(ERRCODE_JSON_NUMBER_NOT_FOUND);
+ }
+
+ switch (jsp->type)
+ {
+ case jpiPlus:
+ break;
+ case jpiMinus:
+ val->val.numeric =
+ DatumGetNumeric(DirectFunctionCall1(
+ numeric_uminus, NumericGetDatum(val->val.numeric)));
+ break;
+ default:
+ elog(ERROR, "unknown jsonpath arithmetic operation %d", jsp->type);
+ }
+
+ jper2 = recursiveExecuteNext(cxt, jsp, &elem, val, found, false);
+
+ if (jperIsError(jper2))
+ return jper2;
+
+ if (jper2 == jperOk)
+ {
+ if (!found)
+ return jperOk;
+ jper = jperOk;
+ }
+ }
+
+ return jper;
+}
+
+/*
+ * implements jpiAny node (** operator)
+ */
+static JsonPathExecResult
+recursiveAny(JsonPathExecContext *cxt, JsonPathItem *jsp, JsonbValue *jb,
+ JsonValueList *found, uint32 level, uint32 first, uint32 last)
+{
+ JsonPathExecResult res = jperNotFound;
+ JsonbIterator *it;
+ int32 r;
+ JsonbValue v;
+
+ check_stack_depth();
+
+ if (level > last)
+ return res;
+
+ it = JsonbIteratorInit(jb->val.binary.data);
+
+ /*
+ * Recursively iterate over jsonb objects/arrays
+ */
+ while((r = JsonbIteratorNext(&it, &v, true)) != WJB_DONE)
+ {
+ if (r == WJB_KEY)
+ {
+ r = JsonbIteratorNext(&it, &v, true);
+ Assert(r == WJB_VALUE);
+ }
+
+ if (r == WJB_VALUE || r == WJB_ELEM)
+ {
+
+ if (level >= first ||
+ (first == PG_UINT32_MAX && last == PG_UINT32_MAX &&
+ v.type != jbvBinary)) /* leaves only requested */
+ {
+ /* check expression */
+ bool ignoreStructuralErrors = cxt->ignoreStructuralErrors;
+
+ cxt->ignoreStructuralErrors = true;
+ res = recursiveExecuteNext(cxt, NULL, jsp, &v, found, true);
+ cxt->ignoreStructuralErrors = ignoreStructuralErrors;
+
+ if (jperIsError(res))
+ break;
+
+ if (res == jperOk && !found)
+ break;
+ }
+
+ if (level < last && v.type == jbvBinary)
+ {
+ res = recursiveAny(cxt, jsp, &v, found, level + 1, first, last);
+
+ if (jperIsError(res))
+ break;
+
+ if (res == jperOk && found == NULL)
+ break;
+ }
+ }
+ }
+
+ return res;
+}
+
+/*
+ * Execute array subscript expression and convert resulting numeric item to the
+ * integer type with truncation.
+ */
+static JsonPathExecResult
+getArrayIndex(JsonPathExecContext *cxt, JsonPathItem *jsp, JsonbValue *jb,
+ int32 *index)
+{
+ JsonbValue *jbv;
+ JsonValueList found = { 0 };
+ JsonbValue tmp;
+ JsonPathExecResult res = recursiveExecute(cxt, jsp, jb, &found);
+
+ if (jperIsError(res))
+ return res;
+
+ if (JsonValueListLength(&found) != 1 ||
+ !(jbv = getScalar(JsonValueListHead(&found), &tmp, jbvNumeric)))
+ return jperMakeError(ERRCODE_INVALID_JSON_SUBSCRIPT);
+
+ *index = DatumGetInt32(DirectFunctionCall1(numeric_int4,
+ DirectFunctionCall2(numeric_trunc,
+ NumericGetDatum(jbv->val.numeric),
+ Int32GetDatum(0))));
+
+ return jperOk;
+}
+
+/*
+ * STARTS_WITH predicate callback.
+ *
+ * Check if the 'whole' string starts from 'initial' string.
+ */
+static inline JsonPathBool
+executeStartsWith(JsonPathItem *jsp, JsonbValue *whole, JsonbValue *initial,
+ void *param)
+{
+ JsonbValue wholeBuf;
+ JsonbValue initialBuf;
+
+ if (!(whole = getScalar(whole, &wholeBuf, jbvString)))
+ return jpbUnknown; /* error */
+
+ if (!(initial = getScalar(initial, &initialBuf, jbvString)))
+ return jpbUnknown; /* error */
+
+ if (whole->val.string.len >= initial->val.string.len &&
+ !memcmp(whole->val.string.val,
+ initial->val.string.val,
+ initial->val.string.len))
+ return jpbTrue;
+
+ return jpbFalse;
+}
+
+/* Context for LIKE_REGEX execution. */
+typedef struct LikeRegexContext
+{
+ text *regex;
+ int cflags;
+} LikeRegexContext;
+
+/*
+ * LIKE_REGEX predicate callback.
+ *
+ * Check if the string matches regex pattern.
+ */
+static JsonPathBool
+executeLikeRegex(JsonPathItem *jsp, JsonbValue *str, JsonbValue *rarg,
+ void *param)
+{
+ LikeRegexContext *cxt = param;
+ JsonbValue strbuf;
+
+ if (!(str = getScalar(str, &strbuf, jbvString)))
+ return jpbUnknown;
+
+ /* Cache regex text and converted flags. */
+ if (!cxt->regex)
+ {
+ uint32 flags = jsp->content.like_regex.flags;
+
+ cxt->regex =
+ cstring_to_text_with_len(jsp->content.like_regex.pattern,
+ jsp->content.like_regex.patternlen);
+
+ /* Convert regex flags. */
+ cxt->cflags = REG_ADVANCED;
+
+ if (flags & JSP_REGEX_ICASE)
+ cxt->cflags |= REG_ICASE;
+ if (flags & JSP_REGEX_MLINE)
+ cxt->cflags |= REG_NEWLINE;
+ if (flags & JSP_REGEX_SLINE)
+ cxt->cflags &= ~REG_NEWLINE;
+ if (flags & JSP_REGEX_WSPACE)
+ cxt->cflags |= REG_EXPANDED;
+ }
+
+ if (RE_compile_and_execute(cxt->regex, str->val.string.val,
+ str->val.string.len,
+ cxt->cflags, DEFAULT_COLLATION_OID, 0, NULL))
+ return jpbTrue;
+
+ return jpbFalse;
+}
+
+/*
+ * Try to parse datetime text with the specified datetime template and
+ * default time-zone 'tzname'.
+ * Returns 'value' datum, its type 'typid' and 'typmod'.
+ */
+static bool
+tryToParseDatetime(text *fmt, text *datetime, char *tzname, bool strict,
+ Datum *value, Oid *typid, int32 *typmod, int *tz)
+{
+ MemoryContext mcxt = CurrentMemoryContext;
+ bool ok = false;
+
+ /*
+ * It is safe to use here PG_TRY/PG_CATCH without subtransaction because no
+ * function called inside performs data modification.
+ */
+ PG_TRY();
+ {
+ *value = to_datetime(datetime, fmt, tzname, strict, typid, typmod, tz);
+ ok = true;
+ }
+ PG_CATCH();
+ {
+ if (ERRCODE_TO_CATEGORY(geterrcode()) != ERRCODE_DATA_EXCEPTION)
+ PG_RE_THROW();
+
+ FlushErrorState();
+ MemoryContextSwitchTo(mcxt);
+ }
+ PG_END_TRY();
+
+ return ok;
+}
+
+/*
+ * Convert boolean execution status 'res' to a boolean JSON item and execute
+ * next jsonpath.
+ */
+static inline JsonPathExecResult
+appendBoolResult(JsonPathExecContext *cxt, JsonPathItem *jsp,
+ JsonValueList *found, JsonPathBool res)
+{
+ JsonPathItem next;
+ JsonbValue jbv;
+ bool hasNext = jspGetNext(jsp, &next);
+
+ if (!found && !hasNext)
+ return jperOk; /* found singleton boolean value */
+
+ if (res == jpbUnknown)
+ {
+ jbv.type = jbvNull;
+ }
+ else
+ {
+ jbv.type = jbvBool;
+ jbv.val.boolean = res == jpbTrue;
+ }
+
+ return recursiveExecuteNext(cxt, jsp, &next, &jbv, found, true);
+}
+
+/* Execute boolean-valued jsonpath expression. */
+static inline JsonPathBool
+recursiveExecuteBool(JsonPathExecContext *cxt, JsonPathItem *jsp,
+ JsonbValue *jb, bool canHaveNext)
+{
+ JsonPathItem larg;
+ JsonPathItem rarg;
+ JsonPathBool res;
+ JsonPathBool res2;
+
+ if (!canHaveNext && jspHasNext(jsp))
+ elog(ERROR, "boolean jsonpath item can not have next item");
+
+ switch (jsp->type)
+ {
+ case jpiAnd:
+ jspGetLeftArg(jsp, &larg);
+ res = recursiveExecuteBool(cxt, &larg, jb, false);
+
+ if (res == jpbFalse)
+ return jpbFalse;
+
+ /*
+ * SQL/JSON says that we should check second arg
+ * in case of jperError
+ */
+
+ jspGetRightArg(jsp, &rarg);
+ res2 = recursiveExecuteBool(cxt, &rarg, jb, false);
+
+ return res2 == jpbTrue ? res : res2;
+
+ case jpiOr:
+ jspGetLeftArg(jsp, &larg);
+ res = recursiveExecuteBool(cxt, &larg, jb, false);
+
+ if (res == jpbTrue)
+ return jpbTrue;
+
+ jspGetRightArg(jsp, &rarg);
+ res2 = recursiveExecuteBool(cxt, &rarg, jb, false);
+
+ return res2 == jpbFalse ? res : res2;
+
+ case jpiNot:
+ jspGetArg(jsp, &larg);
+
+ res = recursiveExecuteBool(cxt, &larg, jb, false);
+
+ if (res == jpbUnknown)
+ return jpbUnknown;
+
+ return res == jpbTrue ? jpbFalse : jpbTrue;
+
+ case jpiIsUnknown:
+ jspGetArg(jsp, &larg);
+ res = recursiveExecuteBool(cxt, &larg, jb, false);
+ return res == jpbUnknown ? jpbTrue : jpbFalse;
+
+ case jpiEqual:
+ case jpiNotEqual:
+ case jpiLess:
+ case jpiGreater:
+ case jpiLessOrEqual:
+ case jpiGreaterOrEqual:
+ jspGetLeftArg(jsp, &larg);
+ jspGetRightArg(jsp, &rarg);
+ return executePredicate(cxt, jsp, &larg, &rarg, jb, true,
+ executeComparison, NULL);
+
+ case jpiStartsWith: /* 'whole STARTS WITH initial' */
+ jspGetLeftArg(jsp, &larg); /* 'whole' */
+ jspGetRightArg(jsp, &rarg); /* 'initial' */
+ return executePredicate(cxt, jsp, &larg, &rarg, jb, false,
+ executeStartsWith, NULL);
+
+ case jpiLikeRegex: /* 'expr LIKE_REGEX pattern FLAGS flags' */
+ {
+ /* 'expr' is a sequence-returning expression.
+ * 'pattern' is a regex string literal. SQL/JSON standard
+ * requires XQuery regexes, but we use Postgres regexes here.
+ * 'flags' is a string literal converted to integer flags at
+ * compile-time.
+ */
+ LikeRegexContext lrcxt = { 0 };
+
+ jspInitByBuffer(&larg, jsp->base, jsp->content.like_regex.expr);
+
+ return executePredicate(cxt, jsp, &larg, NULL, jb, false,
+ executeLikeRegex, &lrcxt);
+ }
+
+ case jpiExists:
+ jspGetArg(jsp, &larg);
+
+ if (jspStrictAbsenseOfErrors(cxt))
+ {
+ /*
+ * In strict mode we must get a complete list of values
+ * to check that there are no errors at all.
+ */
+ JsonValueList vals = { 0 };
+ JsonPathExecResult res = recursiveExecute(cxt, &larg, jb, &vals);
+
+ if (jperIsError(res))
+ return jperReplace(res, jpbUnknown);
+
+ return JsonValueListIsEmpty(&vals) ? jpbFalse : jpbTrue;
+ }
+ else
+ {
+ JsonPathExecResult res = recursiveExecute(cxt, &larg, jb, NULL);
+
+ if (jperIsError(res))
+ return jperReplace(res, jpbUnknown);
+
+ return res == jperOk ? jpbTrue : jpbFalse;
+ }
+
+ default:
+ elog(ERROR, "invalid boolean jsonpath item type: %d", jsp->type);
+ return jpbUnknown;
+ }
+}
+
+/*
+ * Execute nested (filters etc.) boolean expression pushing current SQL/JSON
+ * item onto the stack.
+ */
+static inline JsonPathBool
+recursiveExecuteBoolNested(JsonPathExecContext *cxt, JsonPathItem *jsp,
+ JsonbValue *jb)
+{
+ JsonItemStackEntry current;
+ JsonPathBool res;
+
+ pushJsonItem(&cxt->stack, ¤t, jb);
+ res = recursiveExecuteBool(cxt, jsp, jb, false);
+ popJsonItem(&cxt->stack);
+
+ return res;
+}
+
+static inline JsonPathExecResult
+recursiveExecuteBase(JsonPathExecContext *cxt, JsonPathItem *jsp,
+ JsonbValue *jbv, JsonValueList *found)
+{
+ JsonbValue *v;
+ JsonbValue vbuf;
+ bool copy = true;
+
+ if (JsonbType(jbv) == jbvScalar)
+ {
+ if (jspHasNext(jsp))
+ v = &vbuf;
+ else
+ {
+ v = palloc(sizeof(*v));
+ copy = false;
+ }
+
+ JsonbExtractScalar(jbv->val.binary.data, v);
+ }
+ else
+ v = jbv;
+
+ return recursiveExecuteNext(cxt, jsp, NULL, v, found, copy);
+}
+
+/* Save base object and its id needed for the execution of .keyvalue(). */
+static inline JsonBaseObjectInfo
+setBaseObject(JsonPathExecContext *cxt, JsonbValue *jbv, int32 id)
+{
+ JsonBaseObjectInfo baseObject = cxt->baseObject;
+
+ cxt->baseObject.jbc = jbv->type != jbvBinary ? NULL :
+ (JsonbContainer *) jbv->val.binary.data;
+ cxt->baseObject.id = id;
+
+ return baseObject;
+}
+
+/*
+ * Main executor function: walks on jsonpath structure and tries to find
+ * correspoding parts of jsonb. Note, jsonb and jsonpath values should be
+ * avaliable and untoasted during work because JsonPathItem, JsonbValue
+ * and found could have pointers into input values. If caller wants just to
+ * check matching of json by jsonpath then it doesn't provide a found arg.
+ * In this case executor works till first positive result and does not check
+ * the rest if it is possible. In other case it tries to find all satisfied
+ * results
+ */
+static JsonPathExecResult
+recursiveExecuteNoUnwrap(JsonPathExecContext *cxt, JsonPathItem *jsp,
+ JsonbValue *jb, JsonValueList *found)
+{
+ JsonPathItem elem;
+ JsonPathExecResult res = jperNotFound;
+ bool hasNext;
+ JsonBaseObjectInfo baseObject;
+
+ check_stack_depth();
+ CHECK_FOR_INTERRUPTS();
+
+ switch (jsp->type)
+ {
+ /* all boolean item types: */
+ case jpiAnd:
+ case jpiOr:
+ case jpiNot:
+ case jpiIsUnknown:
+ case jpiEqual:
+ case jpiNotEqual:
+ case jpiLess:
+ case jpiGreater:
+ case jpiLessOrEqual:
+ case jpiGreaterOrEqual:
+ case jpiExists:
+ case jpiStartsWith:
+ case jpiLikeRegex:
+ {
+ JsonPathBool st = recursiveExecuteBool(cxt, jsp, jb, true);
+
+ res = appendBoolResult(cxt, jsp, found, st);
+ break;
+ }
+
+ case jpiKey:
+ if (JsonbType(jb) == jbvObject)
+ {
+ JsonbValue *v, key;
+ JsonbValue obj;
+
+ if (jb->type == jbvObject)
+ jb = JsonbWrapInBinary(jb, &obj);
+
+ key.type = jbvString;
+ key.val.string.val = jspGetString(jsp, &key.val.string.len);
+
+ v = findJsonbValueFromContainer(jb->val.binary.data, JB_FOBJECT, &key);
+
+ if (v != NULL)
+ {
+ res = recursiveExecuteNext(cxt, jsp, NULL, v, found, false);
+
+ if (jspHasNext(jsp) || !found)
+ pfree(v); /* free value if it was not added to found list */
+ }
+ else if (!jspIgnoreStructuralErrors(cxt))
+ {
+ Assert(found);
+ res = jperMakeError(ERRCODE_JSON_MEMBER_NOT_FOUND);
+ }
+ }
+ else if (!jspIgnoreStructuralErrors(cxt))
+ {
+ Assert(found);
+ res = jperMakeError(ERRCODE_JSON_MEMBER_NOT_FOUND);
+ }
+ break;
+
+ case jpiRoot:
+ jb = cxt->root;
+ baseObject = setBaseObject(cxt, jb, 0);
+ res = recursiveExecuteBase(cxt, jsp, jb, found);
+ cxt->baseObject = baseObject;
+ break;
+
+ case jpiCurrent:
+ res = recursiveExecuteBase(cxt, jsp, cxt->stack->item, found);
+ break;
+
+ case jpiAnyArray:
+ if (JsonbType(jb) == jbvArray)
+ {
+ hasNext = jspGetNext(jsp, &elem);
+
+ if (jb->type == jbvArray)
+ {
+ JsonbValue *el = jb->val.array.elems;
+ JsonbValue *last_el = el + jb->val.array.nElems;
+
+ for (; el < last_el; el++)
+ {
+ res = recursiveExecuteNext(cxt, jsp, &elem, el, found, true);
+
+ if (jperIsError(res))
+ break;
+
+ if (res == jperOk && !found)
+ break;
+ }
+ }
+ else
+ {
+ JsonbValue v;
+ JsonbIterator *it;
+ JsonbIteratorToken r;
+
+ it = JsonbIteratorInit(jb->val.binary.data);
+
+ while((r = JsonbIteratorNext(&it, &v, true)) != WJB_DONE)
+ {
+ if (r == WJB_ELEM)
+ {
+ res = recursiveExecuteNext(cxt, jsp, &elem, &v, found, true);
+
+ if (jperIsError(res))
+ break;
+
+ if (res == jperOk && !found)
+ break;
+ }
+ }
+ }
+ }
+ else if (jspAutoWrap(cxt))
+ res = recursiveExecuteNext(cxt, jsp, NULL, jb, found, true);
+ else if (!jspIgnoreStructuralErrors(cxt))
+ res = jperMakeError(ERRCODE_JSON_ARRAY_NOT_FOUND);
+ break;
+
+ case jpiIndexArray:
+ if (JsonbType(jb) == jbvArray || jspAutoWrap(cxt))
+ {
+ int innermostArraySize = cxt->innermostArraySize;
+ int i;
+ int size = JsonbArraySize(jb);
+ bool binary = jb->type == jbvBinary;
+ bool singleton = size < 0;
+
+ if (singleton)
+ size = 1;
+
+ cxt->innermostArraySize = size; /* for LAST evaluation */
+
+ hasNext = jspGetNext(jsp, &elem);
+
+ for (i = 0; i < jsp->content.array.nelems; i++)
+ {
+ JsonPathItem from;
+ JsonPathItem to;
+ int32 index;
+ int32 index_from;
+ int32 index_to;
+ bool range = jspGetArraySubscript(jsp, &from, &to, i);
+
+ res = getArrayIndex(cxt, &from, jb, &index_from);
+
+ if (jperIsError(res))
+ break;
+
+ if (range)
+ {
+ res = getArrayIndex(cxt, &to, jb, &index_to);
+
+ if (jperIsError(res))
+ break;
+ }
+ else
+ index_to = index_from;
+
+ if (!jspIgnoreStructuralErrors(cxt) &&
+ (index_from < 0 ||
+ index_from > index_to ||
+ index_to >= size))
+ {
+ res = jperMakeError(ERRCODE_INVALID_JSON_SUBSCRIPT);
+ break;
+ }
+
+ if (index_from < 0)
+ index_from = 0;
+
+ if (index_to >= size)
+ index_to = size - 1;
+
+ res = jperNotFound;
+
+ for (index = index_from; index <= index_to; index++)
+ {
+ JsonbValue *v;
+ bool copy;
+
+ if (singleton)
+ {
+ v = jb;
+ copy = true;
+ }
+ else if (binary)
+ {
+ v = getIthJsonbValueFromContainer(jb->val.binary.data,
+ (uint32) index);
+
+ if (v == NULL)
+ continue;
+
+ copy = false;
+ }
+ else
+ {
+ v = &jb->val.array.elems[index];
+ copy = true;
+ }
+
+ res = recursiveExecuteNext(cxt, jsp, &elem, v, found,
+ copy);
+
+ if (jperIsError(res))
+ break;
+
+ if (res == jperOk && !found)
+ break;
+ }
+
+ if (jperIsError(res))
+ break;
+
+ if (res == jperOk && !found)
+ break;
+ }
+
+ cxt->innermostArraySize = innermostArraySize;
+ }
+ else if (!jspIgnoreStructuralErrors(cxt))
+ {
+ res = jperMakeError(ERRCODE_JSON_ARRAY_NOT_FOUND);
+ }
+ break;
+
+ case jpiLast:
+ {
+ JsonbValue tmpjbv;
+ JsonbValue *lastjbv;
+ int last;
+ bool hasNext;
+
+ if (cxt->innermostArraySize < 0)
+ elog(ERROR,
+ "evaluating jsonpath LAST outside of array subscript");
+
+ hasNext = jspGetNext(jsp, &elem);
+
+ if (!hasNext && !found)
+ {
+ res = jperOk;
+ break;
+ }
+
+ last = cxt->innermostArraySize - 1;
+
+ lastjbv = hasNext ? &tmpjbv : palloc(sizeof(*lastjbv));
+
+ lastjbv->type = jbvNumeric;
+ lastjbv->val.numeric = DatumGetNumeric(DirectFunctionCall1(
+ int4_numeric, Int32GetDatum(last)));
+
+ res = recursiveExecuteNext(cxt, jsp, &elem, lastjbv, found, hasNext);
+ }
+ break;
+ case jpiAnyKey:
+ if (JsonbType(jb) == jbvObject)
+ {
+ JsonbIterator *it;
+ int32 r;
+ JsonbValue v;
+ JsonbValue bin;
+
+ if (jb->type == jbvObject)
+ jb = JsonbWrapInBinary(jb, &bin);
+
+ hasNext = jspGetNext(jsp, &elem);
+ it = JsonbIteratorInit(jb->val.binary.data);
+
+ while((r = JsonbIteratorNext(&it, &v, true)) != WJB_DONE)
+ {
+ if (r == WJB_VALUE)
+ {
+ res = recursiveExecuteNext(cxt, jsp, &elem, &v, found, true);
+
+ if (jperIsError(res))
+ break;
+
+ if (res == jperOk && !found)
+ break;
+ }
+ }
+ }
+ else if (!jspIgnoreStructuralErrors(cxt))
+ {
+ Assert(found);
+ res = jperMakeError(ERRCODE_JSON_OBJECT_NOT_FOUND);
+ }
+ break;
+ case jpiAdd:
+ case jpiSub:
+ case jpiMul:
+ case jpiDiv:
+ case jpiMod:
+ res = executeBinaryArithmExpr(cxt, jsp, jb, found);
+ break;
+ case jpiPlus:
+ case jpiMinus:
+ res = executeUnaryArithmExpr(cxt, jsp, jb, found);
+ break;
+ case jpiFilter:
+ {
+ JsonPathBool st;
+
+ jspGetArg(jsp, &elem);
+ st = recursiveExecuteBoolNested(cxt, &elem, jb);
+ if (st != jpbTrue)
+ res = jperNotFound;
+ else
+ res = recursiveExecuteNext(cxt, jsp, NULL, jb, found, true);
+ break;
+ }
+ case jpiAny:
+ {
+ JsonbValue jbvbuf;
+
+ hasNext = jspGetNext(jsp, &elem);
+
+ /* first try without any intermediate steps */
+ if (jsp->content.anybounds.first == 0)
+ {
+ bool ignoreStructuralErrors = cxt->ignoreStructuralErrors;
+
+ cxt->ignoreStructuralErrors = true;
+ res = recursiveExecuteNext(cxt, jsp, &elem, jb, found, true);
+ cxt->ignoreStructuralErrors = ignoreStructuralErrors;
+
+ if (res == jperOk && !found)
+ break;
+ }
+
+ if (jb->type == jbvArray || jb->type == jbvObject)
+ jb = JsonbWrapInBinary(jb, &jbvbuf);
+
+ if (jb->type == jbvBinary)
+ res = recursiveAny(cxt, hasNext ? &elem : NULL, jb, found,
+ 1,
+ jsp->content.anybounds.first,
+ jsp->content.anybounds.last);
+ break;
+ }
+ case jpiNull:
+ case jpiBool:
+ case jpiNumeric:
+ case jpiString:
+ case jpiVariable:
+ {
+ JsonbValue vbuf;
+ JsonbValue *v;
+ bool hasNext = jspGetNext(jsp, &elem);
+ int id;
+
+ if (!hasNext && !found)
+ {
+ res = jperOk; /* skip evaluation */
+ break;
+ }
+
+ v = hasNext ? &vbuf : palloc(sizeof(*v));
+
+ id = computeJsonPathItem(cxt, jsp, v);
+
+ baseObject = setBaseObject(cxt, v, id);
+ res = recursiveExecuteNext(cxt, jsp, &elem, v, found, hasNext);
+ cxt->baseObject = baseObject;
+ }
+ break;
+ case jpiType:
+ {
+ JsonbValue *jbv = palloc(sizeof(*jbv));
+
+ jbv->type = jbvString;
+ jbv->val.string.val = pstrdup(JsonbTypeName(jb));
+ jbv->val.string.len = strlen(jbv->val.string.val);
+
+ res = recursiveExecuteNext(cxt, jsp, NULL, jbv, found, false);
+ }
+ break;
+ case jpiSize:
+ {
+ int size = JsonbArraySize(jb);
+
+ if (size < 0)
+ {
+ if (!jspAutoWrap(cxt))
+ {
+ if (!jspIgnoreStructuralErrors(cxt))
+ res = jperMakeError(ERRCODE_JSON_ARRAY_NOT_FOUND);
+ break;
+ }
+
+ size = 1;
+ }
+
+ jb = palloc(sizeof(*jb));
+
+ jb->type = jbvNumeric;
+ jb->val.numeric =
+ DatumGetNumeric(DirectFunctionCall1(int4_numeric,
+ Int32GetDatum(size)));
+
+ res = recursiveExecuteNext(cxt, jsp, NULL, jb, found, false);
+ }
+ break;
+ case jpiAbs:
+ case jpiFloor:
+ case jpiCeiling:
+ {
+ JsonbValue jbvbuf;
+
+ if ((jb = getScalar(jb, &jbvbuf, jbvNumeric)))
+ {
+ Datum datum = NumericGetDatum(jb->val.numeric);
+
+ switch (jsp->type)
+ {
+ case jpiAbs:
+ datum = DirectFunctionCall1(numeric_abs, datum);
+ break;
+ case jpiFloor:
+ datum = DirectFunctionCall1(numeric_floor, datum);
+ break;
+ case jpiCeiling:
+ datum = DirectFunctionCall1(numeric_ceil, datum);
+ break;
+ default:
+ break;
+ }
+
+ jb = palloc(sizeof(*jb));
+
+ jb->type = jbvNumeric;
+ jb->val.numeric = DatumGetNumeric(datum);
+
+ res = recursiveExecuteNext(cxt, jsp, NULL, jb, found, false);
+ }
+ else
+ res = jperMakeError(ERRCODE_NON_NUMERIC_JSON_ITEM);
+ }
+ break;
+ case jpiDouble:
+ {
+ JsonbValue jbv;
+ MemoryContext mcxt = CurrentMemoryContext;
+
+ jb = extractScalar(jb, &jbv);
+
+ /*
+ * It is safe to use here PG_TRY/PG_CATCH without subtransaction
+ * because no function called inside performs data modification.
+ */
+ PG_TRY();
+ {
+ if (jb->type == jbvNumeric)
+ {
+ /* only check success of numeric to double cast */
+ DirectFunctionCall1(numeric_float8,
+ NumericGetDatum(jb->val.numeric));
+ res = jperOk;
+ }
+ else if (jb->type == jbvString)
+ {
+ /* cast string as double */
+ char *str = pnstrdup(jb->val.string.val,
+ jb->val.string.len);
+ Datum val = DirectFunctionCall1(
+ float8in, CStringGetDatum(str));
+ pfree(str);
+
+ jb = &jbv;
+ jb->type = jbvNumeric;
+ jb->val.numeric = DatumGetNumeric(DirectFunctionCall1(
+ float8_numeric, val));
+ res = jperOk;
+
+ }
+ else
+ res = jperMakeError(ERRCODE_NON_NUMERIC_JSON_ITEM);
+ }
+ PG_CATCH();
+ {
+ if (ERRCODE_TO_CATEGORY(geterrcode()) !=
+ ERRCODE_DATA_EXCEPTION)
+ PG_RE_THROW();
+
+ FlushErrorState();
+ MemoryContextSwitchTo(mcxt);
+ res = jperMakeError(ERRCODE_NON_NUMERIC_JSON_ITEM);
+ }
+ PG_END_TRY();
+
+ if (res == jperOk)
+ res = recursiveExecuteNext(cxt, jsp, NULL, jb, found, true);
+ }
+ break;
+ case jpiDatetime:
+ {
+ JsonbValue jbvbuf;
+ Datum value;
+ text *datetime;
+ Oid typid;
+ int32 typmod = -1;
+ int tz;
+ bool hasNext;
+
+ res = jperMakeError(ERRCODE_INVALID_ARGUMENT_FOR_JSON_DATETIME_FUNCTION);
+
+ if (!(jb = getScalar(jb, &jbvbuf, jbvString)))
+ break;
+
+ datetime = cstring_to_text_with_len(jb->val.string.val,
+ jb->val.string.len);
+
+ if (jsp->content.args.left)
+ {
+ text *template;
+ char *template_str;
+ int template_len;
+ char *tzname = NULL;
+
+ jspGetLeftArg(jsp, &elem);
+
+ if (elem.type != jpiString)
+ elog(ERROR, "invalid jsonpath item type for .datetime() argument");
+
+ template_str = jspGetString(&elem, &template_len);
+
+ if (jsp->content.args.right)
+ {
+ JsonValueList tzlist = { 0 };
+ JsonPathExecResult tzres;
+ JsonbValue *tzjbv;
+
+ jspGetRightArg(jsp, &elem);
+ tzres = recursiveExecuteNoUnwrap(cxt, &elem, jb,
+ &tzlist);
+
+ if (jperIsError(tzres))
+ return tzres;
+
+ if (JsonValueListLength(&tzlist) != 1)
+ break;
+
+ tzjbv = JsonValueListHead(&tzlist);
+
+ if (tzjbv->type != jbvString)
+ break;
+
+ tzname = pnstrdup(tzjbv->val.string.val,
+ tzjbv->val.string.len);
+ }
+
+ template = cstring_to_text_with_len(template_str,
+ template_len);
+
+ if (tryToParseDatetime(template, datetime, tzname, false,
+ &value, &typid, &typmod, &tz))
+ res = jperOk;
+
+ if (tzname)
+ pfree(tzname);
+ }
+ else
+ {
+ /* Try to recognize one of ISO formats. */
+ static const char *fmt_str[] =
+ {
+ "yyyy-mm-dd HH24:MI:SS TZH:TZM",
+ "yyyy-mm-dd HH24:MI:SS TZH",
+ "yyyy-mm-dd HH24:MI:SS",
+ "yyyy-mm-dd",
+ "HH24:MI:SS TZH:TZM",
+ "HH24:MI:SS TZH",
+ "HH24:MI:SS"
+ };
+ /* cache for format texts */
+ static text *fmt_txt[lengthof(fmt_str)] = { 0 };
+ int i;
+
+ for (i = 0; i < lengthof(fmt_str); i++)
+ {
+ if (!fmt_txt[i])
+ {
+ MemoryContext oldcxt =
+ MemoryContextSwitchTo(TopMemoryContext);
+
+ fmt_txt[i] = cstring_to_text(fmt_str[i]);
+ MemoryContextSwitchTo(oldcxt);
+ }
+
+ if (tryToParseDatetime(fmt_txt[i], datetime, NULL, true,
+ &value, &typid, &typmod, &tz))
+ {
+ res = jperOk;
+ break;
+ }
+ }
+ }
+
+ pfree(datetime);
+
+ if (jperIsError(res))
+ break;
+
+ hasNext = jspGetNext(jsp, &elem);
+
+ if (!hasNext && !found)
+ break;
+
+ jb = hasNext ? &jbvbuf : palloc(sizeof(*jb));
+
+ jb->type = jbvDatetime;
+ jb->val.datetime.value = value;
+ jb->val.datetime.typid = typid;
+ jb->val.datetime.typmod = typmod;
+ jb->val.datetime.tz = tz;
+
+ res = recursiveExecuteNext(cxt, jsp, &elem, jb, found, hasNext);
+ }
+ break;
+ case jpiKeyValue:
+
+ /*
+ * .keyvalue() method returns a sequence of object's key-value
+ * pairs in the following format:
+ * '{ "key": key, "value": value, "id": id }'.
+ *
+ * "id" field is an object identifier which is constructed from
+ * the two parts: base object id and its binary offset in base
+ * object's jsonb:
+ * id = 10000000000 * base_object_id + obj_offset_in_base_object
+ *
+ * 10000000000 (10^10) -- is a first round decimal number greater
+ * than 2^32 (maximal offset in jsonb). Decimal multiplier is used
+ * here to improve the readability of identifiers.
+ *
+ * Base object is usually a root object of the path: context item
+ * '$' or path variable '$var', literals can't produce objects for
+ * now. But if the path contains generated objects (.keyvalue()
+ * itself, for example), then they become base object for the
+ * subsequent .keyvalue().
+ *
+ * Id of '$' is 0.
+ * Id of '$var' is its ordinal (positive) number in the list of
+ * variables (see computeJsonPathVariable()).
+ * Ids for generated objects are assigned using global counter
+ * JsonPathExecContext.generatedObjectId starting from
+ * (number_of_vars + 1).
+ */
+
+ if (JsonbType(jb) != jbvObject)
+ res = jperMakeError(ERRCODE_JSON_OBJECT_NOT_FOUND);
+ else
+ {
+ int32 r;
+ JsonbValue bin;
+ JsonbValue key;
+ JsonbValue val;
+ JsonbValue idval;
+ JsonbValue obj;
+ JsonbValue keystr;
+ JsonbValue valstr;
+ JsonbValue idstr;
+ JsonbIterator *it;
+ JsonbParseState *ps = NULL;
+ int64 id;
+
+ hasNext = jspGetNext(jsp, &elem);
+
+ if (jb->type == jbvBinary
+ ? !JsonContainerSize(jb->val.binary.data)
+ : !jb->val.object.nPairs)
+ {
+ res = jperNotFound;
+ break;
+ }
+
+ /* make template object */
+ obj.type = jbvBinary;
+
+ keystr.type = jbvString;
+ keystr.val.string.val = "key";
+ keystr.val.string.len = 3;
+
+ valstr.type = jbvString;
+ valstr.val.string.val = "value";
+ valstr.val.string.len = 5;
+
+ idstr.type = jbvString;
+ idstr.val.string.val = "id";
+ idstr.val.string.len = 2;
+
+ if (jb->type == jbvObject)
+ jb = JsonbWrapInBinary(jb, &bin);
+
+ /* construct object id from its base object and offset in it */
+ id = jb->type != jbvBinary ? 0 :
+ (int64)((char *) jb->val.binary.data -
+ (char *) cxt->baseObject.jbc);
+ id += (int64) cxt->baseObject.id * INT64CONST(10000000000);
+
+ idval.type = jbvNumeric;
+ idval.val.numeric = DatumGetNumeric(DirectFunctionCall1(int8_numeric, Int64GetDatum(id)));
+
+ it = JsonbIteratorInit(jb->val.binary.data);
+
+ while ((r = JsonbIteratorNext(&it, &key, true)) != WJB_DONE)
+ {
+ if (r == WJB_KEY)
+ {
+ Jsonb *jsonb;
+ JsonbValue *keyval;
+
+ res = jperOk;
+
+ if (!hasNext && !found)
+ break;
+
+ r = JsonbIteratorNext(&it, &val, true);
+ Assert(r == WJB_VALUE);
+
+ pushJsonbValue(&ps, WJB_BEGIN_OBJECT, NULL);
+
+ pushJsonbValue(&ps, WJB_KEY, &keystr);
+ pushJsonbValue(&ps, WJB_VALUE, &key);
+
+ pushJsonbValue(&ps, WJB_KEY, &valstr);
+ pushJsonbValue(&ps, WJB_VALUE, &val);
+
+ pushJsonbValue(&ps, WJB_KEY, &idstr);
+ pushJsonbValue(&ps, WJB_VALUE, &idval);
+
+ keyval = pushJsonbValue(&ps, WJB_END_OBJECT, NULL);
+
+ jsonb = JsonbValueToJsonb(keyval);
+
+ JsonbInitBinary(&obj, jsonb);
+
+ baseObject = setBaseObject(cxt, &obj,
+ cxt->generatedObjectId++);
+
+ res = recursiveExecuteNext(cxt, jsp, &elem, &obj, found, true);
+
+ cxt->baseObject = baseObject;
+
+ if (jperIsError(res))
+ break;
+
+ if (res == jperOk && !found)
+ break;
+ }
+ }
+ }
+ break;
+ default:
+ elog(ERROR, "unrecognized jsonpath item type: %d", jsp->type);
+ }
+
+ return res;
+}
+
+/*
+ * Unwrap current array item and execute jsonpath for each of its elements.
+ */
+static JsonPathExecResult
+recursiveExecuteUnwrapArray(JsonPathExecContext *cxt, JsonPathItem *jsp,
+ JsonbValue *jb, JsonValueList *found)
+{
+ JsonPathExecResult res = jperNotFound;
+
+ if (jb->type == jbvArray)
+ {
+ JsonbValue *elem = jb->val.array.elems;
+ JsonbValue *last = elem + jb->val.array.nElems;
+
+ for (; elem < last; elem++)
+ {
+ res = recursiveExecuteNoUnwrap(cxt, jsp, elem, found);
+
+ if (jperIsError(res))
+ break;
+ if (res == jperOk && !found)
+ break;
+ }
+ }
+ else
+ {
+ JsonbValue v;
+ JsonbIterator *it;
+ JsonbIteratorToken tok;
+
+ it = JsonbIteratorInit(jb->val.binary.data);
+
+ while ((tok = JsonbIteratorNext(&it, &v, true)) != WJB_DONE)
+ {
+ if (tok == WJB_ELEM)
+ {
+ res = recursiveExecuteNoUnwrap(cxt, jsp, &v, found);
+ if (jperIsError(res))
+ break;
+ if (res == jperOk && !found)
+ break;
+ }
+ }
+ }
+
+ return res;
+}
+
+/*
+ * Execute jsonpath with unwrapping of current item if it is an array.
+ */
+static inline JsonPathExecResult
+recursiveExecuteUnwrap(JsonPathExecContext *cxt, JsonPathItem *jsp,
+ JsonbValue *jb, JsonValueList *found)
+{
+ if (jspAutoUnwrap(cxt) && JsonbType(jb) == jbvArray)
+ return recursiveExecuteUnwrapArray(cxt, jsp, jb, found);
+
+ return recursiveExecuteNoUnwrap(cxt, jsp, jb, found);
+}
+
+/*
+ * Execute jsonpath with automatic unwrapping of current item in lax mode.
+ */
+static inline JsonPathExecResult
+recursiveExecute(JsonPathExecContext *cxt, JsonPathItem *jsp, JsonbValue *jb,
+ JsonValueList *found)
+{
+ if (jspAutoUnwrap(cxt))
+ {
+ switch (jsp->type)
+ {
+ case jpiKey:
+ case jpiAnyKey:
+ /* case jpiAny: */
+ case jpiFilter:
+ /* all methods excluding type() and size() */
+ case jpiAbs:
+ case jpiFloor:
+ case jpiCeiling:
+ case jpiDouble:
+ case jpiDatetime:
+ case jpiKeyValue:
+ return recursiveExecuteUnwrap(cxt, jsp, jb, found);
+
+ default:
+ break;
+ }
+ }
+
+ return recursiveExecuteNoUnwrap(cxt, jsp, jb, found);
+}
+
+
+/*
+ * Interface to jsonpath executor
+ */
+static JsonPathExecResult
+executeJsonPath(JsonPath *path, List *vars, Jsonb *json, JsonValueList *foundJson)
+{
+ JsonPathExecContext cxt;
+ JsonPathItem jsp;
+ JsonbValue jbv;
+ JsonItemStackEntry root;
+
+ jspInit(&jsp, path);
+
+ cxt.vars = vars;
+ cxt.laxMode = (path->header & JSONPATH_LAX) != 0;
+ cxt.ignoreStructuralErrors = cxt.laxMode;
+ cxt.root = JsonbInitBinary(&jbv, json);
+ cxt.stack = NULL;
+ cxt.baseObject.jbc = NULL;
+ cxt.baseObject.id = 0;
+ cxt.generatedObjectId = list_length(vars) + 1;
+ cxt.innermostArraySize = -1;
+
+ pushJsonItem(&cxt.stack, &root, cxt.root);
+
+ if (jspStrictAbsenseOfErrors(&cxt) && !foundJson)
+ {
+ /*
+ * In strict mode we must get a complete list of values to check
+ * that there are no errors at all.
+ */
+ JsonValueList vals = { 0 };
+ JsonPathExecResult res = recursiveExecute(&cxt, &jsp, &jbv, &vals);
+
+ if (jperIsError(res))
+ return res;
+
+ return JsonValueListIsEmpty(&vals) ? jperNotFound : jperOk;
+ }
+
+ return recursiveExecute(&cxt, &jsp, &jbv, foundJson);
+}
+
+static Datum
+returnDATUM(void *arg, bool *isNull)
+{
+ *isNull = false;
+ return PointerGetDatum(arg);
+}
+
+static Datum
+returnNULL(void *arg, bool *isNull)
+{
+ *isNull = true;
+ return Int32GetDatum(0);
+}
+
+/*
+ * Convert jsonb object into list of vars for executor
+ */
+static List*
+makePassingVars(Jsonb *jb)
+{
+ JsonbValue v;
+ JsonbIterator *it;
+ int32 r;
+ List *vars = NIL;
+
+ it = JsonbIteratorInit(&jb->root);
+
+ r = JsonbIteratorNext(&it, &v, true);
+
+ if (r != WJB_BEGIN_OBJECT)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("json containing jsonpath variables is not an object")));
+
+ while ((r = JsonbIteratorNext(&it, &v, true)) != WJB_DONE)
+ {
+ if (r == WJB_KEY)
+ {
+ JsonPathVariable *jpv = palloc0(sizeof(*jpv));
+
+ jpv->varName = cstring_to_text_with_len(v.val.string.val,
+ v.val.string.len);
+
+ JsonbIteratorNext(&it, &v, true);
+
+ /* Datums are copied from jsonb into the current memory context. */
+ jpv->cb = returnDATUM;
+
+ switch (v.type)
+ {
+ case jbvBool:
+ jpv->typid = BOOLOID;
+ jpv->cb_arg = DatumGetPointer(BoolGetDatum(v.val.boolean));
+ break;
+ case jbvNull:
+ jpv->cb = returnNULL;
+ break;
+ case jbvString:
+ jpv->typid = TEXTOID;
+ jpv->cb_arg = cstring_to_text_with_len(v.val.string.val,
+ v.val.string.len);
+ break;
+ case jbvNumeric:
+ jpv->typid = NUMERICOID;
+ jpv->cb_arg = DatumGetPointer(
+ datumCopy(NumericGetDatum(v.val.numeric), false, -1));
+ break;
+ case jbvBinary:
+ jpv->typid = JSONBOID;
+ jpv->cb_arg = DatumGetPointer(JsonbPGetDatum(JsonbValueToJsonb(&v)));
+ break;
+ default:
+ elog(ERROR, "invalid jsonb value type");
+ }
+
+ vars = lappend(vars, jpv);
+ }
+ }
+
+ return vars;
+}
+
+static void
+throwJsonPathError(JsonPathExecResult res)
+{
+ int err;
+ if (!jperIsError(res))
+ return;
+
+ if (jperIsErrorData(res))
+ ThrowErrorData(jperGetErrorData(res));
+
+ err = jperGetError(res);
+
+ switch (err)
+ {
+ case ERRCODE_JSON_ARRAY_NOT_FOUND:
+ ereport(ERROR,
+ (errcode(err),
+ errmsg("SQL/JSON array not found")));
+ break;
+ case ERRCODE_JSON_OBJECT_NOT_FOUND:
+ ereport(ERROR,
+ (errcode(err),
+ errmsg("SQL/JSON object not found")));
+ break;
+ case ERRCODE_JSON_MEMBER_NOT_FOUND:
+ ereport(ERROR,
+ (errcode(err),
+ errmsg("SQL/JSON member not found")));
+ break;
+ case ERRCODE_JSON_NUMBER_NOT_FOUND:
+ ereport(ERROR,
+ (errcode(err),
+ errmsg("SQL/JSON number not found")));
+ break;
+ case ERRCODE_JSON_SCALAR_REQUIRED:
+ ereport(ERROR,
+ (errcode(err),
+ errmsg("SQL/JSON scalar required")));
+ break;
+ case ERRCODE_SINGLETON_JSON_ITEM_REQUIRED:
+ ereport(ERROR,
+ (errcode(err),
+ errmsg("Singleton SQL/JSON item required")));
+ break;
+ case ERRCODE_NON_NUMERIC_JSON_ITEM:
+ ereport(ERROR,
+ (errcode(err),
+ errmsg("Non-numeric SQL/JSON item")));
+ break;
+ case ERRCODE_INVALID_JSON_SUBSCRIPT:
+ ereport(ERROR,
+ (errcode(err),
+ errmsg("Invalid SQL/JSON subscript")));
+ break;
+ case ERRCODE_INVALID_ARGUMENT_FOR_JSON_DATETIME_FUNCTION:
+ ereport(ERROR,
+ (errcode(err),
+ errmsg("Invalid argument for SQL/JSON datetime function")));
+ break;
+ default:
+ ereport(ERROR,
+ (errcode(err),
+ errmsg("Unknown SQL/JSON error")));
+ break;
+ }
+}
+
+/*
+ * jsonb_path_exists
+ * Returns true if jsonpath returns at least one item for the specified
+ * jsonb value.
+ */
+Datum
+jsonb_path_exists(PG_FUNCTION_ARGS)
+{
+ Jsonb *jb = PG_GETARG_JSONB_P(0);
+ JsonPath *jp = PG_GETARG_JSONPATH_P(1);
+ JsonPathExecResult res;
+ List *vars = NIL;
+
+ if (PG_NARGS() == 3)
+ vars = makePassingVars(PG_GETARG_JSONB_P(2));
+
+ res = executeJsonPath(jp, vars, jb, NULL);
+
+ PG_FREE_IF_COPY(jb, 0);
+ PG_FREE_IF_COPY(jp, 1);
+
+ if (jperIsError(res))
+ {
+ jperFree(res);
+ PG_RETURN_NULL();
+ }
+
+ PG_RETURN_BOOL(res == jperOk);
+}
+
+/*
+ * jsonb_path_exists_novars
+ * Implements the 2-argument version of jsonb_path_exists
+ */
+Datum
+jsonb_path_exists_novars(PG_FUNCTION_ARGS)
+{
+ /* just call the other one -- it can handle both cases */
+ return jsonb_path_exists(fcinfo);
+}
+
+/*
+ * jsonb_path_match
+ * Returns jsonpath predicate result item for the specified jsonb value.
+ * The result of jsonpath execution should be a single item, error is
+ * raised otherwise. Non-bool result is treated as NULL.
+ */
+Datum
+jsonb_path_match(PG_FUNCTION_ARGS)
+{
+ Jsonb *jb = PG_GETARG_JSONB_P(0);
+ JsonPath *jp = PG_GETARG_JSONPATH_P(1);
+ JsonbValue *jbv;
+ JsonValueList found = { 0 };
+ JsonPathExecResult res;
+ List *vars;
+
+ if (PG_NARGS() == 3)
+ vars = makePassingVars(PG_GETARG_JSONB_P(2));
+ else
+ vars = NULL;
+
+ res = executeJsonPath(jp, vars, jb, &found);
+
+ throwJsonPathError(res);
+
+ if (JsonValueListLength(&found) != 1)
+ throwJsonPathError(jperMakeError(ERRCODE_SINGLETON_JSON_ITEM_REQUIRED));
+
+ jbv = JsonValueListHead(&found);
+ jbv = extractScalar(jbv, jbv);
+
+ PG_FREE_IF_COPY(jb, 0);
+ PG_FREE_IF_COPY(jp, 1);
+
+ if (jbv->type == jbvNull)
+ PG_RETURN_NULL();
+
+ if (jbv->type != jbvBool)
+ PG_RETURN_NULL(); /* XXX */
+
+ PG_RETURN_BOOL(jbv->val.boolean);
+}
+
+/*
+ * jsonb_path_match_novars
+ * Implements the 2-argument version of jsonb_path_match
+ */
+Datum
+jsonb_path_match_novars(PG_FUNCTION_ARGS)
+{
+ /* just call the other one -- it can handle both cases */
+ return jsonb_path_match(fcinfo);
+}
+
+/*
+ * jsonb_path_query
+ * Executes jsonpath for given jsonb document and returns result as
+ * rowset.
+ */
+Datum
+jsonb_path_query(PG_FUNCTION_ARGS)
+{
+ FuncCallContext *funcctx;
+ List *found;
+ JsonbValue *v;
+ ListCell *c;
+
+ if (SRF_IS_FIRSTCALL())
+ {
+ JsonPath *jp = PG_GETARG_JSONPATH_P(1);
+ Jsonb *jb;
+ JsonPathExecResult res;
+ MemoryContext oldcontext;
+ List *vars = NIL;
+ JsonValueList found = { 0 };
+
+ funcctx = SRF_FIRSTCALL_INIT();
+ oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx);
+
+ jb = PG_GETARG_JSONB_P_COPY(0);
+ if (PG_NARGS() == 3)
+ vars = makePassingVars(PG_GETARG_JSONB_P(2));
+
+ res = executeJsonPath(jp, vars, jb, &found);
+
+ if (jperIsError(res))
+ throwJsonPathError(res);
+
+ PG_FREE_IF_COPY(jp, 1);
+
+ funcctx->user_fctx = JsonValueListGetList(&found);
+
+ MemoryContextSwitchTo(oldcontext);
+ }
+
+ funcctx = SRF_PERCALL_SETUP();
+ found = funcctx->user_fctx;
+
+ c = list_head(found);
+
+ if (c == NULL)
+ SRF_RETURN_DONE(funcctx);
+
+ v = lfirst(c);
+ funcctx->user_fctx = list_delete_first(found);
+
+ SRF_RETURN_NEXT(funcctx, JsonbPGetDatum(JsonbValueToJsonb(v)));
+}
+
+/*
+ * jsonb_path_query_novars
+ * Implements the 2-argument version of jsonb_path_query
+ */
+Datum
+jsonb_path_query_novars(PG_FUNCTION_ARGS)
+{
+ /* just call the other one -- it can handle both cases */
+ return jsonb_path_query(fcinfo);
+}
+
+/*
+ * jsonb_path_query_array
+ * Executes jsonpath for given jsonb document and returns result as
+ * jsonb array.
+ */
+Datum
+jsonb_path_query_array(FunctionCallInfo fcinfo)
+{
+ Jsonb *jb = PG_GETARG_JSONB_P(0);
+ JsonPath *jp = PG_GETARG_JSONPATH_P(1);
+ JsonValueList found = { 0 };
+ JsonPathExecResult res;
+ List *vars;
+
+ if (PG_NARGS() == 3)
+ vars = makePassingVars(PG_GETARG_JSONB_P(2));
+ else
+ vars = NIL;
+
+ res = executeJsonPath(jp, vars, jb, &found);
+
+ if (jperIsError(res))
+ throwJsonPathError(res);
+
+ PG_RETURN_JSONB_P(JsonbValueToJsonb(wrapItemsInArray(&found)));
+}
+
+/*
+ * jsonb_path_query_array_novars
+ * Implements the 2-argument version of jsonb_path_query_array
+ */
+Datum
+jsonb_path_query_array_novars(PG_FUNCTION_ARGS)
+{
+ /* just call the other one -- it can handle both cases */
+ return jsonb_path_query_array(fcinfo);
+}
+
+/*
+ * jsonb_path_query_first
+ * Executes jsonpath for given jsonb document and returns first result
+ * item. If there are no items, NULL returned.
+ */
+Datum
+jsonb_path_query_first(FunctionCallInfo fcinfo)
+{
+ Jsonb *jb = PG_GETARG_JSONB_P(0);
+ JsonPath *jp = PG_GETARG_JSONPATH_P(1);
+ JsonValueList found = { 0 };
+ JsonPathExecResult res;
+ List *vars;
+
+ if (PG_NARGS() == 3)
+ vars = makePassingVars(PG_GETARG_JSONB_P(2));
+ else
+ vars = NIL;
+
+ res = executeJsonPath(jp, vars, jb, &found);
+
+ if (jperIsError(res))
+ throwJsonPathError(res);
+
+ if (JsonValueListLength(&found) >= 1)
+ PG_RETURN_JSONB_P(JsonbValueToJsonb(JsonValueListHead(&found)));
+ else
+ PG_RETURN_NULL();
+}
+
+/*
+ * jsonb_path_query_first_novars
+ * Implements the 2-argument version of jsonb_path_query_first
+ */
+Datum
+jsonb_path_query_first_novars(PG_FUNCTION_ARGS)
+{
+ /* just call the other one -- it can handle both cases */
+ return jsonb_path_query_first(fcinfo);
+}
diff --git a/src/backend/utils/adt/jsonpath_gram.y b/src/backend/utils/adt/jsonpath_gram.y
new file mode 100644
index 0000000..cf648c3
--- /dev/null
+++ b/src/backend/utils/adt/jsonpath_gram.y
@@ -0,0 +1,493 @@
+/*-------------------------------------------------------------------------
+ *
+ * jsonpath_gram.y
+ * Grammar definitions for jsonpath datatype
+ *
+ * Copyright (c) 2019, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ * src/backend/utils/adt/jsonpath_gram.y
+ *
+ *-------------------------------------------------------------------------
+ */
+
+%{
+#include "postgres.h"
+
+#include "catalog/pg_collation.h"
+#include "fmgr.h"
+#include "miscadmin.h"
+#include "nodes/pg_list.h"
+#include "regex/regex.h"
+#include "utils/builtins.h"
+#include "utils/jsonpath.h"
+#include "utils/jsonpath_scanner.h"
+
+/*
+ * Bison doesn't allocate anything that needs to live across parser calls,
+ * so we can easily have it use palloc instead of malloc. This prevents
+ * memory leaks if we error out during parsing. Note this only works with
+ * bison >= 2.0. However, in bison 1.875 the default is to use alloca()
+ * if possible, so there's not really much problem anyhow, at least if
+ * you're building with gcc.
+ */
+#define YYMALLOC palloc
+#define YYFREE pfree
+
+static JsonPathParseItem*
+makeItemType(int type)
+{
+ JsonPathParseItem* v = palloc(sizeof(*v));
+
+ CHECK_FOR_INTERRUPTS();
+
+ v->type = type;
+ v->next = NULL;
+
+ return v;
+}
+
+static JsonPathParseItem*
+makeItemString(string *s)
+{
+ JsonPathParseItem *v;
+
+ if (s == NULL)
+ {
+ v = makeItemType(jpiNull);
+ }
+ else
+ {
+ v = makeItemType(jpiString);
+ v->value.string.val = s->val;
+ v->value.string.len = s->len;
+ }
+
+ return v;
+}
+
+static JsonPathParseItem*
+makeItemVariable(string *s)
+{
+ JsonPathParseItem *v;
+
+ v = makeItemType(jpiVariable);
+ v->value.string.val = s->val;
+ v->value.string.len = s->len;
+
+ return v;
+}
+
+static JsonPathParseItem*
+makeItemKey(string *s)
+{
+ JsonPathParseItem *v;
+
+ v = makeItemString(s);
+ v->type = jpiKey;
+
+ return v;
+}
+
+static JsonPathParseItem*
+makeItemNumeric(string *s)
+{
+ JsonPathParseItem *v;
+
+ v = makeItemType(jpiNumeric);
+ v->value.numeric =
+ DatumGetNumeric(DirectFunctionCall3(numeric_in, CStringGetDatum(s->val), 0, -1));
+
+ return v;
+}
+
+static JsonPathParseItem*
+makeItemBool(bool val) {
+ JsonPathParseItem *v = makeItemType(jpiBool);
+
+ v->value.boolean = val;
+
+ return v;
+}
+
+static JsonPathParseItem*
+makeItemBinary(int type, JsonPathParseItem* la, JsonPathParseItem *ra)
+{
+ JsonPathParseItem *v = makeItemType(type);
+
+ v->value.args.left = la;
+ v->value.args.right = ra;
+
+ return v;
+}
+
+static JsonPathParseItem*
+makeItemUnary(int type, JsonPathParseItem* a)
+{
+ JsonPathParseItem *v;
+
+ if (type == jpiPlus && a->type == jpiNumeric && !a->next)
+ return a;
+
+ if (type == jpiMinus && a->type == jpiNumeric && !a->next)
+ {
+ v = makeItemType(jpiNumeric);
+ v->value.numeric =
+ DatumGetNumeric(DirectFunctionCall1(numeric_uminus,
+ NumericGetDatum(a->value.numeric)));
+ return v;
+ }
+
+ v = makeItemType(type);
+
+ v->value.arg = a;
+
+ return v;
+}
+
+static JsonPathParseItem*
+makeItemList(List *list)
+{
+ JsonPathParseItem *head, *end;
+ ListCell *cell = list_head(list);
+
+ head = end = (JsonPathParseItem *) lfirst(cell);
+
+ if (!lnext(cell))
+ return head;
+
+ /* append items to the end of already existing list */
+ while (end->next)
+ end = end->next;
+
+ for_each_cell(cell, lnext(cell))
+ {
+ JsonPathParseItem *c = (JsonPathParseItem *) lfirst(cell);
+
+ end->next = c;
+ end = c;
+ }
+
+ return head;
+}
+
+static JsonPathParseItem*
+makeIndexArray(List *list)
+{
+ JsonPathParseItem *v = makeItemType(jpiIndexArray);
+ ListCell *cell;
+ int i = 0;
+
+ Assert(list_length(list) > 0);
+ v->value.array.nelems = list_length(list);
+
+ v->value.array.elems = palloc(sizeof(v->value.array.elems[0]) * v->value.array.nelems);
+
+ foreach(cell, list)
+ {
+ JsonPathParseItem *jpi = lfirst(cell);
+
+ Assert(jpi->type == jpiSubscript);
+
+ v->value.array.elems[i].from = jpi->value.args.left;
+ v->value.array.elems[i++].to = jpi->value.args.right;
+ }
+
+ return v;
+}
+
+static JsonPathParseItem*
+makeAny(int first, int last)
+{
+ JsonPathParseItem *v = makeItemType(jpiAny);
+
+ v->value.anybounds.first = (first >= 0) ? first : PG_UINT32_MAX;
+ v->value.anybounds.last = (last >= 0) ? last : PG_UINT32_MAX;
+
+ return v;
+}
+
+static JsonPathParseItem *
+makeItemLikeRegex(JsonPathParseItem *expr, string *pattern, string *flags)
+{
+ JsonPathParseItem *v = makeItemType(jpiLikeRegex);
+ int i;
+ int cflags = REG_ADVANCED;
+
+ v->value.like_regex.expr = expr;
+ v->value.like_regex.pattern = pattern->val;
+ v->value.like_regex.patternlen = pattern->len;
+ v->value.like_regex.flags = 0;
+
+ for (i = 0; flags && i < flags->len; i++)
+ {
+ switch (flags->val[i])
+ {
+ case 'i':
+ v->value.like_regex.flags |= JSP_REGEX_ICASE;
+ cflags |= REG_ICASE;
+ break;
+ case 's':
+ v->value.like_regex.flags &= ~JSP_REGEX_MLINE;
+ v->value.like_regex.flags |= JSP_REGEX_SLINE;
+ cflags |= REG_NEWLINE;
+ break;
+ case 'm':
+ v->value.like_regex.flags &= ~JSP_REGEX_SLINE;
+ v->value.like_regex.flags |= JSP_REGEX_MLINE;
+ cflags &= ~REG_NEWLINE;
+ break;
+ case 'x':
+ v->value.like_regex.flags |= JSP_REGEX_WSPACE;
+ cflags |= REG_EXPANDED;
+ break;
+ default:
+ yyerror(NULL, "unrecognized flag of LIKE_REGEX predicate");
+ break;
+ }
+ }
+
+ /* check regex validity */
+ (void) RE_compile_and_cache(cstring_to_text_with_len(pattern->val, pattern->len),
+ cflags, DEFAULT_COLLATION_OID);
+
+ return v;
+}
+
+%}
+
+/* BISON Declarations */
+%pure-parser
+%expect 0
+%name-prefix="jsonpath_yy"
+%error-verbose
+%parse-param {JsonPathParseResult **result}
+
+%union {
+ string str;
+ List *elems; /* list of JsonPathParseItem */
+ List *indexs; /* list of integers */
+ JsonPathParseItem *value;
+ JsonPathParseResult *result;
+ JsonPathItemType optype;
+ bool boolean;
+ int integer;
+}
+
+%token <str> TO_P NULL_P TRUE_P FALSE_P IS_P UNKNOWN_P EXISTS_P
+%token <str> IDENT_P STRING_P NUMERIC_P INT_P VARIABLE_P
+%token <str> OR_P AND_P NOT_P
+%token <str> LESS_P LESSEQUAL_P EQUAL_P NOTEQUAL_P GREATEREQUAL_P GREATER_P
+%token <str> ANY_P STRICT_P LAX_P LAST_P STARTS_P WITH_P LIKE_REGEX_P FLAG_P
+%token <str> ABS_P SIZE_P TYPE_P FLOOR_P DOUBLE_P CEILING_P DATETIME_P
+%token <str> KEYVALUE_P
+
+%type <result> result
+
+%type <value> scalar_value path_primary expr array_accessor
+ any_path accessor_op key predicate delimited_predicate
+ index_elem starts_with_initial datetime_template opt_datetime_template
+ expr_or_predicate
+
+%type <elems> accessor_expr
+
+%type <indexs> index_list
+
+%type <optype> comp_op method
+
+%type <boolean> mode
+
+%type <str> key_name
+
+%type <integer> any_level
+
+%left OR_P
+%left AND_P
+%right NOT_P
+%left '+' '-'
+%left '*' '/' '%'
+%left UMINUS
+%nonassoc '(' ')'
+
+/* Grammar follows */
+%%
+
+result:
+ mode expr_or_predicate {
+ *result = palloc(sizeof(JsonPathParseResult));
+ (*result)->expr = $2;
+ (*result)->lax = $1;
+ }
+ | /* EMPTY */ { *result = NULL; }
+ ;
+
+expr_or_predicate:
+ expr { $$ = $1; }
+ | predicate { $$ = $1; }
+ ;
+
+mode:
+ STRICT_P { $$ = false; }
+ | LAX_P { $$ = true; }
+ | /* EMPTY */ { $$ = true; }
+ ;
+
+scalar_value:
+ STRING_P { $$ = makeItemString(&$1); }
+ | NULL_P { $$ = makeItemString(NULL); }
+ | TRUE_P { $$ = makeItemBool(true); }
+ | FALSE_P { $$ = makeItemBool(false); }
+ | NUMERIC_P { $$ = makeItemNumeric(&$1); }
+ | INT_P { $$ = makeItemNumeric(&$1); }
+ | VARIABLE_P { $$ = makeItemVariable(&$1); }
+ ;
+
+comp_op:
+ EQUAL_P { $$ = jpiEqual; }
+ | NOTEQUAL_P { $$ = jpiNotEqual; }
+ | LESS_P { $$ = jpiLess; }
+ | GREATER_P { $$ = jpiGreater; }
+ | LESSEQUAL_P { $$ = jpiLessOrEqual; }
+ | GREATEREQUAL_P { $$ = jpiGreaterOrEqual; }
+ ;
+
+delimited_predicate:
+ '(' predicate ')' { $$ = $2; }
+ | EXISTS_P '(' expr ')' { $$ = makeItemUnary(jpiExists, $3); }
+ ;
+
+predicate:
+ delimited_predicate { $$ = $1; }
+ | expr comp_op expr { $$ = makeItemBinary($2, $1, $3); }
+ | predicate AND_P predicate { $$ = makeItemBinary(jpiAnd, $1, $3); }
+ | predicate OR_P predicate { $$ = makeItemBinary(jpiOr, $1, $3); }
+ | NOT_P delimited_predicate { $$ = makeItemUnary(jpiNot, $2); }
+ | '(' predicate ')' IS_P UNKNOWN_P { $$ = makeItemUnary(jpiIsUnknown, $2); }
+ | expr STARTS_P WITH_P starts_with_initial
+ { $$ = makeItemBinary(jpiStartsWith, $1, $4); }
+ | expr LIKE_REGEX_P STRING_P { $$ = makeItemLikeRegex($1, &$3, NULL); }
+ | expr LIKE_REGEX_P STRING_P FLAG_P STRING_P
+ { $$ = makeItemLikeRegex($1, &$3, &$5); }
+ ;
+
+starts_with_initial:
+ STRING_P { $$ = makeItemString(&$1); }
+ | VARIABLE_P { $$ = makeItemVariable(&$1); }
+ ;
+
+path_primary:
+ scalar_value { $$ = $1; }
+ | '$' { $$ = makeItemType(jpiRoot); }
+ | '@' { $$ = makeItemType(jpiCurrent); }
+ | LAST_P { $$ = makeItemType(jpiLast); }
+ ;
+
+accessor_expr:
+ path_primary { $$ = list_make1($1); }
+ | '(' expr ')' accessor_op { $$ = list_make2($2, $4); }
+ | '(' predicate ')' accessor_op { $$ = list_make2($2, $4); }
+ | accessor_expr accessor_op { $$ = lappend($1, $2); }
+ ;
+
+expr:
+ accessor_expr { $$ = makeItemList($1); }
+ | '(' expr ')' { $$ = $2; }
+ | '+' expr %prec UMINUS { $$ = makeItemUnary(jpiPlus, $2); }
+ | '-' expr %prec UMINUS { $$ = makeItemUnary(jpiMinus, $2); }
+ | expr '+' expr { $$ = makeItemBinary(jpiAdd, $1, $3); }
+ | expr '-' expr { $$ = makeItemBinary(jpiSub, $1, $3); }
+ | expr '*' expr { $$ = makeItemBinary(jpiMul, $1, $3); }
+ | expr '/' expr { $$ = makeItemBinary(jpiDiv, $1, $3); }
+ | expr '%' expr { $$ = makeItemBinary(jpiMod, $1, $3); }
+ ;
+
+index_elem:
+ expr { $$ = makeItemBinary(jpiSubscript, $1, NULL); }
+ | expr TO_P expr { $$ = makeItemBinary(jpiSubscript, $1, $3); }
+ ;
+
+index_list:
+ index_elem { $$ = list_make1($1); }
+ | index_list ',' index_elem { $$ = lappend($1, $3); }
+ ;
+
+array_accessor:
+ '[' '*' ']' { $$ = makeItemType(jpiAnyArray); }
+ | '[' index_list ']' { $$ = makeIndexArray($2); }
+ ;
+
+any_level:
+ INT_P { $$ = pg_atoi($1.val, 4, 0); }
+ | LAST_P { $$ = -1; }
+ ;
+
+any_path:
+ ANY_P { $$ = makeAny(0, -1); }
+ | ANY_P '{' any_level '}' { $$ = makeAny($3, $3); }
+ | ANY_P '{' any_level TO_P any_level '}' { $$ = makeAny($3, $5); }
+ ;
+
+accessor_op:
+ '.' key { $$ = $2; }
+ | '.' '*' { $$ = makeItemType(jpiAnyKey); }
+ | array_accessor { $$ = $1; }
+ | '.' any_path { $$ = $2; }
+ | '.' method '(' ')' { $$ = makeItemType($2); }
+ | '.' DATETIME_P '(' opt_datetime_template ')'
+ { $$ = makeItemBinary(jpiDatetime, $4, NULL); }
+ | '.' DATETIME_P '(' datetime_template ',' expr ')'
+ { $$ = makeItemBinary(jpiDatetime, $4, $6); }
+ | '?' '(' predicate ')' { $$ = makeItemUnary(jpiFilter, $3); }
+ ;
+
+datetime_template:
+ STRING_P { $$ = makeItemString(&$1); }
+ ;
+
+opt_datetime_template:
+ datetime_template { $$ = $1; }
+ | /* EMPTY */ { $$ = NULL; }
+ ;
+
+key:
+ key_name { $$ = makeItemKey(&$1); }
+ ;
+
+key_name:
+ IDENT_P
+ | STRING_P
+ | TO_P
+ | NULL_P
+ | TRUE_P
+ | FALSE_P
+ | IS_P
+ | UNKNOWN_P
+ | EXISTS_P
+ | STRICT_P
+ | LAX_P
+ | ABS_P
+ | SIZE_P
+ | TYPE_P
+ | FLOOR_P
+ | DOUBLE_P
+ | CEILING_P
+ | DATETIME_P
+ | KEYVALUE_P
+ | LAST_P
+ | STARTS_P
+ | WITH_P
+ | LIKE_REGEX_P
+ | FLAG_P
+ ;
+
+method:
+ ABS_P { $$ = jpiAbs; }
+ | SIZE_P { $$ = jpiSize; }
+ | TYPE_P { $$ = jpiType; }
+ | FLOOR_P { $$ = jpiFloor; }
+ | DOUBLE_P { $$ = jpiDouble; }
+ | CEILING_P { $$ = jpiCeiling; }
+ | KEYVALUE_P { $$ = jpiKeyValue; }
+ ;
+%%
+
diff --git a/src/backend/utils/adt/jsonpath_scan.l b/src/backend/utils/adt/jsonpath_scan.l
new file mode 100644
index 0000000..89e7f93
--- /dev/null
+++ b/src/backend/utils/adt/jsonpath_scan.l
@@ -0,0 +1,630 @@
+/*-------------------------------------------------------------------------
+ *
+ * jsonpath_scan.l
+ * Lexical parser for jsonpath datatype
+ *
+ * Copyright (c) 2019, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ * src/backend/utils/adt/jsonpath_scan.l
+ *
+ *-------------------------------------------------------------------------
+ */
+
+%{
+#include "postgres.h"
+
+#include "mb/pg_wchar.h"
+#include "nodes/pg_list.h"
+#include "utils/jsonpath_scanner.h"
+
+static string scanstring;
+
+/* No reason to constrain amount of data slurped */
+/* #define YY_READ_BUF_SIZE 16777216 */
+
+/* Handles to the buffer that the lexer uses internally */
+static YY_BUFFER_STATE scanbufhandle;
+static char *scanbuf;
+static int scanbuflen;
+
+static void addstring(bool init, char *s, int l);
+static void addchar(bool init, char s);
+static int checkSpecialVal(void); /* examine scanstring for the special value */
+
+static void parseUnicode(char *s, int l);
+static void parseHexChars(char *s, int l);
+
+/* Avoid exit() on fatal scanner errors (a bit ugly -- see yy_fatal_error) */
+#undef fprintf
+#define fprintf(file, fmt, msg) fprintf_to_ereport(fmt, msg)
+
+static void
+fprintf_to_ereport(const char *fmt, const char *msg)
+{
+ ereport(ERROR, (errmsg_internal("%s", msg)));
+}
+
+#define yyerror jsonpath_yyerror
+%}
+
+%option 8bit
+%option never-interactive
+%option nodefault
+%option noinput
+%option nounput
+%option noyywrap
+%option warn
+%option prefix="jsonpath_yy"
+%option bison-bridge
+%option noyyalloc
+%option noyyrealloc
+%option noyyfree
+
+%x xQUOTED
+%x xNONQUOTED
+%x xVARQUOTED
+%x xSINGLEQUOTED
+%x xCOMMENT
+
+special [\?\%\$\.\[\]\{\}\(\)\|\&\!\=\<\>\@\#\,\*:\-\+\/]
+any [^\?\%\$\.\[\]\{\}\(\)\|\&\!\=\<\>\@\#\,\*:\-\+\/\\\"\' \t\n\r\f]
+blank [ \t\n\r\f]
+hex_dig [0-9A-Fa-f]
+unicode \\u({hex_dig}{4}|\{{hex_dig}{1,6}\})
+hex_char \\x{hex_dig}{2}
+
+
+%%
+
+<INITIAL>\&\& { return AND_P; }
+
+<INITIAL>\|\| { return OR_P; }
+
+<INITIAL>\! { return NOT_P; }
+
+<INITIAL>\*\* { return ANY_P; }
+
+<INITIAL>\< { return LESS_P; }
+
+<INITIAL>\<\= { return LESSEQUAL_P; }
+
+<INITIAL>\=\= { return EQUAL_P; }
+
+<INITIAL>\<\> { return NOTEQUAL_P; }
+
+<INITIAL>\!\= { return NOTEQUAL_P; }
+
+<INITIAL>\>\= { return GREATEREQUAL_P; }
+
+<INITIAL>\> { return GREATER_P; }
+
+<INITIAL>\${any}+ {
+ addstring(true, yytext + 1, yyleng - 1);
+ addchar(false, '\0');
+ yylval->str = scanstring;
+ return VARIABLE_P;
+ }
+
+<INITIAL>\$\" {
+ addchar(true, '\0');
+ BEGIN xVARQUOTED;
+ }
+
+<INITIAL>{special} { return *yytext; }
+
+<INITIAL>{blank}+ { /* ignore */ }
+
+<INITIAL>\/\* {
+ addchar(true, '\0');
+ BEGIN xCOMMENT;
+ }
+
+<INITIAL>[0-9]+(\.[0-9]+)?[eE][+-]?[0-9]+ /* float */ {
+ addstring(true, yytext, yyleng);
+ addchar(false, '\0');
+ yylval->str = scanstring;
+ return NUMERIC_P;
+ }
+
+<INITIAL>\.[0-9]+[eE][+-]?[0-9]+ /* float */ {
+ addstring(true, yytext, yyleng);
+ addchar(false, '\0');
+ yylval->str = scanstring;
+ return NUMERIC_P;
+ }
+
+<INITIAL>([0-9]+)?\.[0-9]+ {
+ addstring(true, yytext, yyleng);
+ addchar(false, '\0');
+ yylval->str = scanstring;
+ return NUMERIC_P;
+ }
+
+<INITIAL>[0-9]+ {
+ addstring(true, yytext, yyleng);
+ addchar(false, '\0');
+ yylval->str = scanstring;
+ return INT_P;
+ }
+
+<INITIAL>{any}+ {
+ addstring(true, yytext, yyleng);
+ BEGIN xNONQUOTED;
+ }
+
+<INITIAL>\" {
+ addchar(true, '\0');
+ BEGIN xQUOTED;
+ }
+
+<INITIAL>\' {
+ addchar(true, '\0');
+ BEGIN xSINGLEQUOTED;
+ }
+
+<INITIAL>\\ {
+ yyless(0);
+ addchar(true, '\0');
+ BEGIN xNONQUOTED;
+ }
+
+<xNONQUOTED>{any}+ {
+ addstring(false, yytext, yyleng);
+ }
+
+<xNONQUOTED>{blank}+ {
+ yylval->str = scanstring;
+ BEGIN INITIAL;
+ return checkSpecialVal();
+ }
+
+
+<xNONQUOTED>\/\* {
+ yylval->str = scanstring;
+ BEGIN xCOMMENT;
+ }
+
+<xNONQUOTED>({special}|\"|\') {
+ yylval->str = scanstring;
+ yyless(0);
+ BEGIN INITIAL;
+ return checkSpecialVal();
+ }
+
+<xNONQUOTED><<EOF>> {
+ yylval->str = scanstring;
+ BEGIN INITIAL;
+ return checkSpecialVal();
+ }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>\\[\"\'\\] { addchar(false, yytext[1]); }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>\\b { addchar(false, '\b'); }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>\\f { addchar(false, '\f'); }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>\\n { addchar(false, '\n'); }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>\\r { addchar(false, '\r'); }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>\\t { addchar(false, '\t'); }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>\\v { addchar(false, '\v'); }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>{unicode}+ { parseUnicode(yytext, yyleng); }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>{hex_char}+ { parseHexChars(yytext, yyleng); }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>\\x { yyerror(NULL, "Hex character sequence is invalid"); }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>\\u { yyerror(NULL, "Unicode sequence is invalid"); }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>\\. { yyerror(NULL, "Escape sequence is invalid"); }
+
+<xNONQUOTED,xQUOTED,xVARQUOTED,xSINGLEQUOTED>\\ { yyerror(NULL, "Unexpected end after backslash"); }
+
+<xQUOTED,xVARQUOTED,xSINGLEQUOTED><<EOF>> { yyerror(NULL, "Unexpected end of quoted string"); }
+
+<xQUOTED>\" {
+ yylval->str = scanstring;
+ BEGIN INITIAL;
+ return STRING_P;
+ }
+
+<xVARQUOTED>\" {
+ yylval->str = scanstring;
+ BEGIN INITIAL;
+ return VARIABLE_P;
+ }
+
+<xSINGLEQUOTED>\' {
+ yylval->str = scanstring;
+ BEGIN INITIAL;
+ return STRING_P;
+ }
+
+<xQUOTED,xVARQUOTED>[^\\\"]+ { addstring(false, yytext, yyleng); }
+
+<xSINGLEQUOTED>[^\\\']+ { addstring(false, yytext, yyleng); }
+
+<INITIAL><<EOF>> { yyterminate(); }
+
+<xCOMMENT>\*\/ { BEGIN INITIAL; }
+
+<xCOMMENT>[^\*]+ { }
+
+<xCOMMENT>\* { }
+
+<xCOMMENT><<EOF>> { yyerror(NULL, "Unexpected end of comment"); }
+
+%%
+
+void
+jsonpath_yyerror(JsonPathParseResult **result, const char *message)
+{
+ if (*yytext == YY_END_OF_BUFFER_CHAR)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("bad jsonpath representation"),
+ /* translator: %s is typically "syntax error" */
+ errdetail("%s at end of input", message)));
+ }
+ else
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("bad jsonpath representation"),
+ /* translator: first %s is typically "syntax error" */
+ errdetail("%s at or near \"%s\"", message, yytext)));
+ }
+}
+
+typedef struct keyword
+{
+ int16 len;
+ bool lowercase;
+ int val;
+ char *keyword;
+} keyword;
+
+/*
+ * Array of key words should be sorted by length and then
+ * alphabetical order
+ */
+
+static keyword keywords[] = {
+ { 2, false, IS_P, "is"},
+ { 2, false, TO_P, "to"},
+ { 3, false, ABS_P, "abs"},
+ { 3, false, LAX_P, "lax"},
+ { 4, false, FLAG_P, "flag"},
+ { 4, false, LAST_P, "last"},
+ { 4, true, NULL_P, "null"},
+ { 4, false, SIZE_P, "size"},
+ { 4, true, TRUE_P, "true"},
+ { 4, false, TYPE_P, "type"},
+ { 4, false, WITH_P, "with"},
+ { 5, true, FALSE_P, "false"},
+ { 5, false, FLOOR_P, "floor"},
+ { 6, false, DOUBLE_P, "double"},
+ { 6, false, EXISTS_P, "exists"},
+ { 6, false, STARTS_P, "starts"},
+ { 6, false, STRICT_P, "strict"},
+ { 7, false, CEILING_P, "ceiling"},
+ { 7, false, UNKNOWN_P, "unknown"},
+ { 8, false, DATETIME_P, "datetime"},
+ { 8, false, KEYVALUE_P, "keyvalue"},
+ { 10,false, LIKE_REGEX_P, "like_regex"},
+};
+
+static int
+checkSpecialVal()
+{
+ int res = IDENT_P;
+ int diff;
+ keyword *StopLow = keywords,
+ *StopHigh = keywords + lengthof(keywords),
+ *StopMiddle;
+
+ if (scanstring.len > keywords[lengthof(keywords) - 1].len)
+ return res;
+
+ while(StopLow < StopHigh)
+ {
+ StopMiddle = StopLow + ((StopHigh - StopLow) >> 1);
+
+ if (StopMiddle->len == scanstring.len)
+ diff = pg_strncasecmp(StopMiddle->keyword, scanstring.val, scanstring.len);
+ else
+ diff = StopMiddle->len - scanstring.len;
+
+ if (diff < 0)
+ StopLow = StopMiddle + 1;
+ else if (diff > 0)
+ StopHigh = StopMiddle;
+ else
+ {
+ if (StopMiddle->lowercase)
+ diff = strncmp(StopMiddle->keyword, scanstring.val, scanstring.len);
+
+ if (diff == 0)
+ res = StopMiddle->val;
+
+ break;
+ }
+ }
+
+ return res;
+}
+
+/*
+ * Called before any actual parsing is done
+ */
+static void
+jsonpath_scanner_init(const char *str, int slen)
+{
+ if (slen <= 0)
+ slen = strlen(str);
+
+ /*
+ * Might be left over after ereport()
+ */
+ yy_init_globals();
+
+ /*
+ * Make a scan buffer with special termination needed by flex.
+ */
+
+ scanbuflen = slen;
+ scanbuf = palloc(slen + 2);
+ memcpy(scanbuf, str, slen);
+ scanbuf[slen] = scanbuf[slen + 1] = YY_END_OF_BUFFER_CHAR;
+ scanbufhandle = yy_scan_buffer(scanbuf, slen + 2);
+
+ BEGIN(INITIAL);
+}
+
+
+/*
+ * Called after parsing is done to clean up after jsonpath_scanner_init()
+ */
+static void
+jsonpath_scanner_finish(void)
+{
+ yy_delete_buffer(scanbufhandle);
+ pfree(scanbuf);
+}
+
+static void
+addstring(bool init, char *s, int l)
+{
+ if (init)
+ {
+ scanstring.total = 32;
+ scanstring.val = palloc(scanstring.total);
+ scanstring.len = 0;
+ }
+
+ if (s && l)
+ {
+ while(scanstring.len + l + 1 >= scanstring.total)
+ {
+ scanstring.total *= 2;
+ scanstring.val = repalloc(scanstring.val, scanstring.total);
+ }
+
+ memcpy(scanstring.val + scanstring.len, s, l);
+ scanstring.len += l;
+ }
+}
+
+static void
+addchar(bool init, char s)
+{
+ if (init)
+ {
+ scanstring.total = 32;
+ scanstring.val = palloc(scanstring.total);
+ scanstring.len = 0;
+ }
+ else if(scanstring.len + 1 >= scanstring.total)
+ {
+ scanstring.total *= 2;
+ scanstring.val = repalloc(scanstring.val, scanstring.total);
+ }
+
+ scanstring.val[ scanstring.len ] = s;
+ if (s != '\0')
+ scanstring.len++;
+}
+
+JsonPathParseResult *
+parsejsonpath(const char *str, int len)
+{
+ JsonPathParseResult *parseresult;
+
+ jsonpath_scanner_init(str, len);
+
+ if (jsonpath_yyparse((void*)&parseresult) != 0)
+ jsonpath_yyerror(NULL, "bugus input");
+
+ jsonpath_scanner_finish();
+
+ return parseresult;
+}
+
+static int
+hexval(char c)
+{
+ if (c >= '0' && c <= '9')
+ return c - '0';
+ if (c >= 'a' && c <= 'f')
+ return c - 'a' + 0xA;
+ if (c >= 'A' && c <= 'F')
+ return c - 'A' + 0xA;
+ elog(ERROR, "invalid hexadecimal digit");
+ return 0; /* not reached */
+}
+
+static void
+addUnicodeChar(int ch)
+{
+ /*
+ * For UTF8, replace the escape sequence by the actual
+ * utf8 character in lex->strval. Do this also for other
+ * encodings if the escape designates an ASCII character,
+ * otherwise raise an error.
+ */
+
+ if (ch == 0)
+ {
+ /* We can't allow this, since our TEXT type doesn't */
+ ereport(ERROR,
+ (errcode(ERRCODE_UNTRANSLATABLE_CHARACTER),
+ errmsg("unsupported Unicode escape sequence"),
+ errdetail("\\u0000 cannot be converted to text.")));
+ }
+ else if (GetDatabaseEncoding() == PG_UTF8)
+ {
+ char utf8str[5];
+ int utf8len;
+
+ unicode_to_utf8(ch, (unsigned char *) utf8str);
+ utf8len = pg_utf_mblen((unsigned char *) utf8str);
+ addstring(false, utf8str, utf8len);
+ }
+ else if (ch <= 0x007f)
+ {
+ /*
+ * This is the only way to designate things like a
+ * form feed character in JSON, so it's useful in all
+ * encodings.
+ */
+ addchar(false, (char) ch);
+ }
+ else
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
+ errmsg("invalid input syntax for type jsonpath"),
+ errdetail("Unicode escape values cannot be used for code point values above 007F when the server encoding is not UTF8.")));
+ }
+}
+
+static void
+addUnicode(int ch, int *hi_surrogate)
+{
+ if (ch >= 0xd800 && ch <= 0xdbff)
+ {
+ if (*hi_surrogate != -1)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
+ errmsg("invalid input syntax for type jsonpath"),
+ errdetail("Unicode high surrogate must not follow a high surrogate.")));
+ *hi_surrogate = (ch & 0x3ff) << 10;
+ return;
+ }
+ else if (ch >= 0xdc00 && ch <= 0xdfff)
+ {
+ if (*hi_surrogate == -1)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
+ errmsg("invalid input syntax for type jsonpath"),
+ errdetail("Unicode low surrogate must follow a high surrogate.")));
+ ch = 0x10000 + *hi_surrogate + (ch & 0x3ff);
+ *hi_surrogate = -1;
+ }
+ else if (*hi_surrogate != -1)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
+ errmsg("invalid input syntax for type jsonpath"),
+ errdetail("Unicode low surrogate must follow a high surrogate.")));
+ }
+
+ addUnicodeChar(ch);
+}
+
+/*
+ * parseUnicode was adopted from json_lex_string() in
+ * src/backend/utils/adt/json.c
+ */
+static void
+parseUnicode(char *s, int l)
+{
+ int i;
+ int hi_surrogate = -1;
+
+ for (i = 2; i < l; i += 2) /* skip '\u' */
+ {
+ int ch = 0;
+ int j;
+
+ if (s[i] == '{') /* parse '\u{XX...}' */
+ {
+ while (s[++i] != '}' && i < l)
+ ch = (ch << 4) | hexval(s[i]);
+ i++; /* ski p '}' */
+ }
+ else /* parse '\uXXXX' */
+ {
+ for (j = 0; j < 4 && i < l; j++)
+ ch = (ch << 4) | hexval(s[i++]);
+ }
+
+ addUnicode(ch, &hi_surrogate);
+ }
+
+ if (hi_surrogate != -1)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
+ errmsg("invalid input syntax for type jsonpath"),
+ errdetail("Unicode low surrogate must follow a high surrogate.")));
+ }
+}
+
+static void
+parseHexChars(char *s, int l)
+{
+ int i;
+
+ Assert(l % 4 /* \xXX */ == 0);
+
+ for (i = 0; i < l / 4; i++)
+ {
+ int ch = (hexval(s[i * 4 + 2]) << 4) | hexval(s[i * 4 + 3]);
+
+ addUnicodeChar(ch);
+ }
+}
+
+/*
+ * Interface functions to make flex use palloc() instead of malloc().
+ * It'd be better to make these static, but flex insists otherwise.
+ */
+
+void *
+jsonpath_yyalloc(yy_size_t bytes)
+{
+ return palloc(bytes);
+}
+
+void *
+jsonpath_yyrealloc(void *ptr, yy_size_t bytes)
+{
+ if (ptr)
+ return repalloc(ptr, bytes);
+ else
+ return palloc(bytes);
+}
+
+void
+jsonpath_yyfree(void *ptr)
+{
+ if (ptr)
+ pfree(ptr);
+}
+
diff --git a/src/backend/utils/adt/regexp.c b/src/backend/utils/adt/regexp.c
index 4ef8a92..da13a87 100644
--- a/src/backend/utils/adt/regexp.c
+++ b/src/backend/utils/adt/regexp.c
@@ -133,7 +133,7 @@ static Datum build_regexp_split_result(regexp_matches_ctx *splitctx);
* Pattern is given in the database encoding. We internally convert to
* an array of pg_wchar, which is what Spencer's regex package wants.
*/
-static regex_t *
+regex_t *
RE_compile_and_cache(text *text_re, int cflags, Oid collation)
{
int text_re_len = VARSIZE_ANY_EXHDR(text_re);
@@ -339,7 +339,7 @@ RE_execute(regex_t *re, char *dat, int dat_len,
* Both pattern and data are given in the database encoding. We internally
* convert to array of pg_wchar which is what Spencer's regex package wants.
*/
-static bool
+bool
RE_compile_and_execute(text *text_re, char *dat, int dat_len,
int cflags, Oid collation,
int nmatch, regmatch_t *pmatch)
diff --git a/src/backend/utils/errcodes.txt b/src/backend/utils/errcodes.txt
index 4f7b9b6..7287653 100644
--- a/src/backend/utils/errcodes.txt
+++ b/src/backend/utils/errcodes.txt
@@ -206,6 +206,22 @@ Section: Class 22 - Data Exception
2200N E ERRCODE_INVALID_XML_CONTENT invalid_xml_content
2200S E ERRCODE_INVALID_XML_COMMENT invalid_xml_comment
2200T E ERRCODE_INVALID_XML_PROCESSING_INSTRUCTION invalid_xml_processing_instruction
+22030 E ERRCODE_DUPLICATE_JSON_OBJECT_KEY_VALUE duplicate_json_object_key_value
+22031 E ERRCODE_INVALID_ARGUMENT_FOR_JSON_DATETIME_FUNCTION invalid_argument_for_json_datetime_function
+22032 E ERRCODE_INVALID_JSON_TEXT invalid_json_text
+22033 E ERRCODE_INVALID_JSON_SUBSCRIPT invalid_json_subscript
+22034 E ERRCODE_MORE_THAN_ONE_JSON_ITEM more_than_one_json_item
+22035 E ERRCODE_NO_JSON_ITEM no_json_item
+22036 E ERRCODE_NON_NUMERIC_JSON_ITEM non_numeric_json_item
+22037 E ERRCODE_NON_UNIQUE_KEYS_IN_JSON_OBJECT non_unique_keys_in_json_object
+22038 E ERRCODE_SINGLETON_JSON_ITEM_REQUIRED singleton_json_item_required
+22039 E ERRCODE_JSON_ARRAY_NOT_FOUND json_array_not_found
+2203A E ERRCODE_JSON_MEMBER_NOT_FOUND json_member_not_found
+2203B E ERRCODE_JSON_NUMBER_NOT_FOUND json_number_not_found
+2203C E ERRCODE_JSON_OBJECT_NOT_FOUND object_not_found
+2203F E ERRCODE_JSON_SCALAR_REQUIRED json_scalar_required
+2203D E ERRCODE_TOO_MANY_JSON_ARRAY_ELEMENTS too_many_json_array_elements
+2203E E ERRCODE_TOO_MANY_JSON_OBJECT_MEMBERS too_many_json_object_members
Section: Class 23 - Integrity Constraint Violation
diff --git a/src/include/catalog/pg_operator.dat b/src/include/catalog/pg_operator.dat
index 06aec07..1c7af92 100644
--- a/src/include/catalog/pg_operator.dat
+++ b/src/include/catalog/pg_operator.dat
@@ -3255,5 +3255,13 @@
{ oid => '3287', descr => 'delete path',
oprname => '#-', oprleft => 'jsonb', oprright => '_text',
oprresult => 'jsonb', oprcode => 'jsonb_delete_path' },
+{ oid => '6076', descr => 'jsonpath exists',
+ oprname => '@?', oprleft => 'jsonb', oprright => 'jsonpath',
+ oprresult => 'bool', oprcode => 'jsonb_path_exists(jsonb,jsonpath)',
+ oprrest => 'contsel', oprjoin => 'contjoinsel' },
+{ oid => '6107', descr => 'jsonpath match',
+ oprname => '@@', oprleft => 'jsonb', oprright => 'jsonpath',
+ oprresult => 'bool', oprcode => 'jsonb_path_match(jsonb,jsonpath)',
+ oprrest => 'contsel', oprjoin => 'contjoinsel' },
]
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 3ecc2e1..00e254b 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -9165,6 +9165,47 @@
proname => 'jsonb_insert', prorettype => 'jsonb',
proargtypes => 'jsonb _text jsonb bool', prosrc => 'jsonb_insert' },
+# jsonpath
+{ oid => '6052', descr => 'I/O',
+ proname => 'jsonpath_in', prorettype => 'jsonpath', proargtypes => 'cstring',
+ prosrc => 'jsonpath_in' },
+{ oid => '6053', descr => 'I/O',
+ proname => 'jsonpath_out', prorettype => 'cstring', proargtypes => 'jsonpath',
+ prosrc => 'jsonpath_out' },
+{ oid => '6054', descr => 'implementation of @? operator',
+ proname => 'jsonb_path_exists', prorettype => 'bool',
+ proargtypes => 'jsonb jsonpath', prosrc => 'jsonb_path_exists_novars' },
+{ oid => '6055', descr => 'jsonpath query without variables',
+ proname => 'jsonb_path_query', prorows => '1000', proretset => 't',
+ prorettype => 'jsonb', proargtypes => 'jsonb jsonpath',
+ prosrc => 'jsonb_path_query_novars' },
+{ oid => '6124', descr => 'jsonpath query without variables wrapped into array',
+ proname => 'jsonb_path_query_array', prorettype => 'jsonb',
+ proargtypes => 'jsonb jsonpath', prosrc => 'jsonb_path_query_array_novars' },
+{ oid => '6122', descr => 'jsonpath query without variables first item',
+ proname => 'jsonb_path_query_first', prorettype => 'jsonb',
+ proargtypes => 'jsonb jsonpath', prosrc => 'jsonb_path_query_first_novars' },
+{ oid => '6073', descr => 'implementation of @@ operator',
+ proname => 'jsonb_path_match', prorettype => 'bool',
+ proargtypes => 'jsonb jsonpath', prosrc => 'jsonb_path_match_novars' },
+{ oid => '6056', descr => 'jsonpath exists test',
+ proname => 'jsonb_path_exists', prorettype => 'bool',
+ proargtypes => 'jsonb jsonpath jsonb', prosrc => 'jsonb_path_exists' },
+{ oid => '6057', descr => 'jsonpath query',
+ proname => 'jsonb_path_query', prorows => '1000', proretset => 't',
+ prorettype => 'jsonb', proargtypes => 'jsonb jsonpath jsonb',
+ prosrc => 'jsonb_path_query' },
+{ oid => '6125', descr => 'jsonpath query wrapped into array',
+ proname => 'jsonb_path_query_array', prorettype => 'jsonb',
+ proargtypes => 'jsonb jsonpath jsonb',
+ prosrc => 'jsonb_path_query_array' },
+{ oid => '6123', descr => 'jsonpath query first item',
+ proname => 'jsonb_path_query_first', prorettype => 'jsonb',
+ proargtypes => 'jsonb jsonpath jsonb', prosrc => 'jsonb_path_query_first' },
+{ oid => '6074', descr => 'jsonpath match', proname => 'jsonb_path_match',
+ prorettype => 'bool', proargtypes => 'jsonb jsonpath jsonb',
+ prosrc => 'jsonb_path_match' },
+
# txid
{ oid => '2939', descr => 'I/O',
proname => 'txid_snapshot_in', prorettype => 'txid_snapshot',
diff --git a/src/include/catalog/pg_type.dat b/src/include/catalog/pg_type.dat
index 4b7750d..e44c562 100644
--- a/src/include/catalog/pg_type.dat
+++ b/src/include/catalog/pg_type.dat
@@ -441,6 +441,11 @@
typname => 'jsonb', typlen => '-1', typbyval => 'f', typcategory => 'U',
typinput => 'jsonb_in', typoutput => 'jsonb_out', typreceive => 'jsonb_recv',
typsend => 'jsonb_send', typalign => 'i', typstorage => 'x' },
+{ oid => '6050', array_type_oid => '6051', descr => 'JSON path',
+ typname => 'jsonpath', typlen => '-1', typbyval => 'f', typcategory => 'U',
+ typarray => '_jsonpath', typinput => 'jsonpath_in',
+ typoutput => 'jsonpath_out', typreceive => '-', typsend => '-',
+ typalign => 'i', typstorage => 'x' },
{ oid => '2970', array_type_oid => '2949', descr => 'txid snapshot',
typname => 'txid_snapshot', typlen => '-1', typbyval => 'f',
diff --git a/src/include/regex/regex.h b/src/include/regex/regex.h
index 27fdc09..4b1e80d 100644
--- a/src/include/regex/regex.h
+++ b/src/include/regex/regex.h
@@ -173,4 +173,9 @@ extern int pg_regprefix(regex_t *, pg_wchar **, size_t *);
extern void pg_regfree(regex_t *);
extern size_t pg_regerror(int, const regex_t *, char *, size_t);
+extern regex_t *RE_compile_and_cache(text *text_re, int cflags, Oid collation);
+extern bool RE_compile_and_execute(text *text_re, char *dat, int dat_len,
+ int cflags, Oid collation,
+ int nmatch, regmatch_t *pmatch);
+
#endif /* _REGEX_H_ */
diff --git a/src/include/utils/.gitignore b/src/include/utils/.gitignore
index 05cfa7a..e0705e1 100644
--- a/src/include/utils/.gitignore
+++ b/src/include/utils/.gitignore
@@ -3,3 +3,4 @@
/probes.h
/errcodes.h
/header-stamp
+/jsonpath_gram.h
diff --git a/src/include/utils/jsonapi.h b/src/include/utils/jsonapi.h
index b9993a9..bd1668c 100644
--- a/src/include/utils/jsonapi.h
+++ b/src/include/utils/jsonapi.h
@@ -161,6 +161,7 @@ extern Jsonb *transform_jsonb_string_values(Jsonb *jsonb, void *action_state,
extern text *transform_json_string_values(text *json, void *action_state,
JsonTransformStringValuesAction transform_action);
-extern char *JsonEncodeDateTime(char *buf, Datum value, Oid typid);
+extern char *JsonEncodeDateTime(char *buf, Datum value, Oid typid,
+ const int *tzp);
#endif /* JSONAPI_H */
diff --git a/src/include/utils/jsonb.h b/src/include/utils/jsonb.h
index 6ccacf5..80962b7 100644
--- a/src/include/utils/jsonb.h
+++ b/src/include/utils/jsonb.h
@@ -66,8 +66,10 @@ typedef enum
/* Convenience macros */
#define DatumGetJsonbP(d) ((Jsonb *) PG_DETOAST_DATUM(d))
+#define DatumGetJsonbPCopy(d) ((Jsonb *) PG_DETOAST_DATUM_COPY(d))
#define JsonbPGetDatum(p) PointerGetDatum(p)
#define PG_GETARG_JSONB_P(x) DatumGetJsonbP(PG_GETARG_DATUM(x))
+#define PG_GETARG_JSONB_P_COPY(x) DatumGetJsonbPCopy(PG_GETARG_DATUM(x))
#define PG_RETURN_JSONB_P(x) PG_RETURN_POINTER(x)
typedef struct JsonbPair JsonbPair;
@@ -236,7 +238,14 @@ enum jbvType
jbvArray = 0x10,
jbvObject,
/* Binary (i.e. struct Jsonb) jbvArray/jbvObject */
- jbvBinary
+ jbvBinary,
+ /*
+ * Virtual types.
+ *
+ * These types are used only for in-memory JSON processing and serialized
+ * into JSON strings when outputted to json/jsonb.
+ */
+ jbvDatetime = 0x20,
};
/*
@@ -277,11 +286,20 @@ struct JsonbValue
int len;
JsonbContainer *data;
} binary; /* Array or object, in on-disk format */
+
+ struct
+ {
+ Datum value;
+ Oid typid;
+ int32 typmod;
+ int tz;
+ } datetime;
} val;
};
-#define IsAJsonbScalar(jsonbval) ((jsonbval)->type >= jbvNull && \
- (jsonbval)->type <= jbvBool)
+#define IsAJsonbScalar(jsonbval) (((jsonbval)->type >= jbvNull && \
+ (jsonbval)->type <= jbvBool) || \
+ (jsonbval)->type == jbvDatetime)
/*
* Key/value pair within an Object.
@@ -379,5 +397,6 @@ extern char *JsonbToCString(StringInfo out, JsonbContainer *in,
extern char *JsonbToCStringIndent(StringInfo out, JsonbContainer *in,
int estimated_len);
+extern JsonbValue *JsonbExtractScalar(JsonbContainer *jbc, JsonbValue *res);
#endif /* __JSONB_H__ */
diff --git a/src/include/utils/jsonpath.h b/src/include/utils/jsonpath.h
new file mode 100644
index 0000000..daef0c8
--- /dev/null
+++ b/src/include/utils/jsonpath.h
@@ -0,0 +1,283 @@
+/*-------------------------------------------------------------------------
+ *
+ * jsonpath.h
+ * Definitions for jsonpath datatype
+ *
+ * Copyright (c) 2019, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ * src/include/utils/jsonpath.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef JSONPATH_H
+#define JSONPATH_H
+
+#include "fmgr.h"
+#include "utils/jsonb.h"
+#include "nodes/pg_list.h"
+
+typedef struct
+{
+ int32 vl_len_; /* varlena header (do not touch directly!) */
+ uint32 header; /* version and flags (see below) */
+ char data[FLEXIBLE_ARRAY_MEMBER];
+} JsonPath;
+
+#define JSONPATH_VERSION (0x01)
+#define JSONPATH_LAX (0x80000000)
+#define JSONPATH_HDRSZ (offsetof(JsonPath, data))
+
+#define DatumGetJsonPathP(d) ((JsonPath *) DatumGetPointer(PG_DETOAST_DATUM(d)))
+#define DatumGetJsonPathPCopy(d) ((JsonPath *) DatumGetPointer(PG_DETOAST_DATUM_COPY(d)))
+#define PG_GETARG_JSONPATH_P(x) DatumGetJsonPathP(PG_GETARG_DATUM(x))
+#define PG_GETARG_JSONPATH_P_COPY(x) DatumGetJsonPathPCopy(PG_GETARG_DATUM(x))
+#define PG_RETURN_JSONPATH_P(p) PG_RETURN_POINTER(p)
+
+/*
+ * All node's type of jsonpath expression
+ */
+typedef enum JsonPathItemType {
+ jpiNull = jbvNull, /* NULL literal */
+ jpiString = jbvString, /* string literal */
+ jpiNumeric = jbvNumeric, /* numeric literal */
+ jpiBool = jbvBool, /* boolean literal: TRUE or FALSE */
+ jpiAnd, /* predicate && predicate */
+ jpiOr, /* predicate || predicate */
+ jpiNot, /* ! predicate */
+ jpiIsUnknown, /* (predicate) IS UNKNOWN */
+ jpiEqual, /* expr == expr */
+ jpiNotEqual, /* expr != expr */
+ jpiLess, /* expr < expr */
+ jpiGreater, /* expr > expr */
+ jpiLessOrEqual, /* expr <= expr */
+ jpiGreaterOrEqual, /* expr >= expr */
+ jpiAdd, /* expr + expr */
+ jpiSub, /* expr - expr */
+ jpiMul, /* expr * expr */
+ jpiDiv, /* expr / expr */
+ jpiMod, /* expr % expr */
+ jpiPlus, /* + expr */
+ jpiMinus, /* - expr */
+ jpiAnyArray, /* [*] */
+ jpiAnyKey, /* .* */
+ jpiIndexArray, /* [subscript, ...] */
+ jpiAny, /* .** */
+ jpiKey, /* .key */
+ jpiCurrent, /* @ */
+ jpiRoot, /* $ */
+ jpiVariable, /* $variable */
+ jpiFilter, /* ? (predicate) */
+ jpiExists, /* EXISTS (expr) predicate */
+ jpiType, /* .type() item method */
+ jpiSize, /* .size() item method */
+ jpiAbs, /* .abs() item method */
+ jpiFloor, /* .floor() item method */
+ jpiCeiling, /* .ceiling() item method */
+ jpiDouble, /* .double() item method */
+ jpiDatetime, /* .datetime() item method */
+ jpiKeyValue, /* .keyvalue() item method */
+ jpiSubscript, /* array subscript: 'expr' or 'expr TO expr' */
+ jpiLast, /* LAST array subscript */
+ jpiStartsWith, /* STARTS WITH predicate */
+ jpiLikeRegex, /* LIKE_REGEX predicate */
+} JsonPathItemType;
+
+/* XQuery regex mode flags for LIKE_REGEX predicate */
+#define JSP_REGEX_ICASE 0x01 /* i flag, case insensitive */
+#define JSP_REGEX_SLINE 0x02 /* s flag, single-line mode */
+#define JSP_REGEX_MLINE 0x04 /* m flag, multi-line mode */
+#define JSP_REGEX_WSPACE 0x08 /* x flag, expanded syntax */
+
+/*
+ * Support functions to parse/construct binary value.
+ * Unlike many other representation of expression the first/main
+ * node is not an operation but left operand of expression. That
+ * allows to implement cheep follow-path descending in jsonb
+ * structure and then execute operator with right operand
+ */
+
+typedef struct JsonPathItem {
+ JsonPathItemType type;
+
+ /* position form base to next node */
+ int32 nextPos;
+
+ /*
+ * pointer into JsonPath value to current node, all
+ * positions of current are relative to this base
+ */
+ char *base;
+
+ union {
+ /* classic operator with two operands: and, or etc */
+ struct {
+ int32 left;
+ int32 right;
+ } args;
+
+ /* any unary operation */
+ int32 arg;
+
+ /* storage for jpiIndexArray: indexes of array */
+ struct {
+ int32 nelems;
+ struct {
+ int32 from;
+ int32 to;
+ } *elems;
+ } array;
+
+ /* jpiAny: levels */
+ struct {
+ uint32 first;
+ uint32 last;
+ } anybounds;
+
+ struct {
+ char *data; /* for bool, numeric and string/key */
+ int32 datalen; /* filled only for string/key */
+ } value;
+
+ struct {
+ int32 expr;
+ char *pattern;
+ int32 patternlen;
+ uint32 flags;
+ } like_regex;
+ } content;
+} JsonPathItem;
+
+#define jspHasNext(jsp) ((jsp)->nextPos > 0)
+
+extern void jspInit(JsonPathItem *v, JsonPath *js);
+extern void jspInitByBuffer(JsonPathItem *v, char *base, int32 pos);
+extern bool jspGetNext(JsonPathItem *v, JsonPathItem *a);
+extern void jspGetArg(JsonPathItem *v, JsonPathItem *a);
+extern void jspGetLeftArg(JsonPathItem *v, JsonPathItem *a);
+extern void jspGetRightArg(JsonPathItem *v, JsonPathItem *a);
+extern Numeric jspGetNumeric(JsonPathItem *v);
+extern bool jspGetBool(JsonPathItem *v);
+extern char * jspGetString(JsonPathItem *v, int32 *len);
+extern bool jspGetArraySubscript(JsonPathItem *v, JsonPathItem *from,
+ JsonPathItem *to, int i);
+
+/*
+ * Parsing
+ */
+
+typedef struct JsonPathParseItem JsonPathParseItem;
+
+struct JsonPathParseItem {
+ JsonPathItemType type;
+ JsonPathParseItem *next; /* next in path */
+
+ union {
+
+ /* classic operator with two operands: and, or etc */
+ struct {
+ JsonPathParseItem *left;
+ JsonPathParseItem *right;
+ } args;
+
+ /* any unary operation */
+ JsonPathParseItem *arg;
+
+ /* storage for jpiIndexArray: indexes of array */
+ struct {
+ int nelems;
+ struct
+ {
+ JsonPathParseItem *from;
+ JsonPathParseItem *to;
+ } *elems;
+ } array;
+
+ /* jpiAny: levels */
+ struct {
+ uint32 first;
+ uint32 last;
+ } anybounds;
+
+ struct {
+ JsonPathParseItem *expr;
+ char *pattern; /* could not be not null-terminated */
+ uint32 patternlen;
+ uint32 flags;
+ } like_regex;
+
+ /* scalars */
+ Numeric numeric;
+ bool boolean;
+ struct {
+ uint32 len;
+ char *val; /* could not be not null-terminated */
+ } string;
+ } value;
+};
+
+typedef struct JsonPathParseResult
+{
+ JsonPathParseItem *expr;
+ bool lax;
+} JsonPathParseResult;
+
+extern JsonPathParseResult* parsejsonpath(const char *str, int len);
+
+/*
+ * Evaluation of jsonpath
+ */
+
+/* Result of jsonpath predicate evaluation */
+typedef enum JsonPathBool
+{
+ jpbFalse = 0,
+ jpbTrue = 1,
+ jpbUnknown = 2
+} JsonPathBool;
+
+/* Result of jsonpath evaluation */
+typedef ErrorData *JsonPathExecResult;
+
+/* Special pseudo-ErrorData with zero sqlerrcode for existence queries. */
+extern ErrorData jperNotFound[1];
+
+#define jperOk NULL
+#define jperIsError(jper) ((jper) && (jper)->sqlerrcode)
+#define jperIsErrorData(jper) ((jper) && (jper)->elevel > 0)
+#define jperGetError(jper) ((jper)->sqlerrcode)
+#define jperMakeErrorData(edata) (edata)
+#define jperGetErrorData(jper) (jper)
+#define jperFree(jper) ((jper) && (jper)->sqlerrcode ? \
+ (jper)->elevel > 0 ? FreeErrorData(jper) : pfree(jper) : (void) 0)
+#define jperReplace(jper1, jper2) (jperFree(jper1), (jper2))
+
+/* Returns special SQL/JSON ErrorData with zero elevel */
+static inline JsonPathExecResult
+jperMakeError(int sqlerrcode)
+{
+ ErrorData *edata = palloc0(sizeof(*edata));
+
+ edata->sqlerrcode = sqlerrcode;
+
+ return edata;
+}
+
+typedef Datum (*JsonPathVariable_cb)(void *, bool *);
+
+typedef struct JsonPathVariable {
+ text *varName;
+ Oid typid;
+ int32 typmod;
+ JsonPathVariable_cb cb;
+ void *cb_arg;
+} JsonPathVariable;
+
+typedef struct JsonValueList
+{
+ JsonbValue *singleton;
+ List *list;
+} JsonValueList;
+
+#endif
diff --git a/src/include/utils/jsonpath_scanner.h b/src/include/utils/jsonpath_scanner.h
new file mode 100644
index 0000000..419dc93
--- /dev/null
+++ b/src/include/utils/jsonpath_scanner.h
@@ -0,0 +1,31 @@
+/*-------------------------------------------------------------------------
+ *
+ * jsonpath_scanner.h
+ * Definitions for jsonpath scanner & parser
+ *
+ * Portions Copyright (c) 2019, PostgreSQL Global Development Group
+ *
+ * src/include/utils/jsonpath_scanner.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef JSONPATH_SCANNER_H
+#define JSONPATH_SCANNER_H
+
+/* struct string is shared between scan and gram */
+typedef struct string {
+ char *val;
+ int len;
+ int total;
+} string;
+
+#include "utils/jsonpath.h"
+#include "utils/jsonpath_gram.h"
+
+/* flex 2.5.4 doesn't bother with a decl for this */
+extern int jsonpath_yylex(YYSTYPE * yylval_param);
+extern int jsonpath_yyparse(JsonPathParseResult **result);
+extern void jsonpath_yyerror(JsonPathParseResult **result, const char *message);
+
+#endif
diff --git a/src/test/regress/expected/jsonb_jsonpath.out b/src/test/regress/expected/jsonb_jsonpath.out
new file mode 100644
index 0000000..f8200d9
--- /dev/null
+++ b/src/test/regress/expected/jsonb_jsonpath.out
@@ -0,0 +1,1765 @@
+select jsonb '{"a": 12}' @? '$.a.b';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '{"a": 12}' @? '$.b';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '{"a": {"a": 12}}' @? '$.a.a';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"a": 12}}' @? '$.*.a';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"b": {"a": 12}}' @? '$.*.a';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{}' @? '$.*';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '{"a": 1}' @? '$.*';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"b": 1}}' @? 'lax $.**{1}';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"b": 1}}' @? 'lax $.**{2}';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"b": 1}}' @? 'lax $.**{3}';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '[]' @? '$[*]';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '[1]' @? '$[*]';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '[1]' @? '$[1]';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '[1]' @? 'strict $[1]';
+ ?column?
+----------
+
+(1 row)
+
+select jsonb_path_query('[1]', 'strict $[1]');
+ERROR: Invalid SQL/JSON subscript
+select jsonb '[1]' @? '$[0]';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '[1]' @? '$[0.3]';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '[1]' @? '$[0.5]';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '[1]' @? '$[0.9]';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '[1]' @? '$[1.2]';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '[1]' @? 'strict $[1.2]';
+ ?column?
+----------
+
+(1 row)
+
+select jsonb '{"a": [1,2,3], "b": [3,4,5]}' @? '$ ? (@.a[*] > @.b[*])';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '{"a": [1,2,3], "b": [3,4,5]}' @? '$ ? (@.a[*] >= @.b[*])';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": [1,2,3], "b": [3,4,"5"]}' @? '$ ? (@.a[*] >= @.b[*])';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": [1,2,3], "b": [3,4,"5"]}' @? 'strict $ ? (@.a[*] >= @.b[*])';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '{"a": [1,2,3], "b": [3,4,null]}' @? '$ ? (@.a[*] >= @.b[*])';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '1' @? '$ ? ((@ == "1") is unknown)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '1' @? '$ ? ((@ == 1) is unknown)';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '[{"a": 1}, {"a": 2}]' @? '$[0 to 1] ? (@.a > 1)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb_path_query('{"a": 12, "b": {"a": 13}}', '$.a');
+ jsonb_path_query
+------------------
+ 12
+(1 row)
+
+select jsonb_path_query('{"a": 12, "b": {"a": 13}}', '$.b');
+ jsonb_path_query
+------------------
+ {"a": 13}
+(1 row)
+
+select jsonb_path_query('{"a": 12, "b": {"a": 13}}', '$.*');
+ jsonb_path_query
+------------------
+ 12
+ {"a": 13}
+(2 rows)
+
+select jsonb_path_query('{"a": 12, "b": {"a": 13}}', 'lax $.*.a');
+ jsonb_path_query
+------------------
+ 13
+(1 row)
+
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[*].a');
+ jsonb_path_query
+------------------
+ 13
+(1 row)
+
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[*].*');
+ jsonb_path_query
+------------------
+ 13
+ 14
+(2 rows)
+
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[0].a');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[1].a');
+ jsonb_path_query
+------------------
+ 13
+(1 row)
+
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[2].a');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[0,1].a');
+ jsonb_path_query
+------------------
+ 13
+(1 row)
+
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[0 to 10].a');
+ jsonb_path_query
+------------------
+ 13
+(1 row)
+
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}, "ccc", true]', '$[2.5 - 1 to $.size() - 2]');
+ jsonb_path_query
+------------------
+ {"a": 13}
+ {"b": 14}
+ "ccc"
+(3 rows)
+
+select jsonb_path_query('1', 'lax $[0]');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('1', 'lax $[*]');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('[1]', 'lax $[0]');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('[1]', 'lax $[*]');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('[1,2,3]', 'lax $[*]');
+ jsonb_path_query
+------------------
+ 1
+ 2
+ 3
+(3 rows)
+
+select jsonb_path_query('[]', '$[last]');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('[]', 'strict $[last]');
+ERROR: Invalid SQL/JSON subscript
+select jsonb_path_query('[1]', '$[last]');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('[1,2,3]', '$[last]');
+ jsonb_path_query
+------------------
+ 3
+(1 row)
+
+select jsonb_path_query('[1,2,3]', '$[last - 1]');
+ jsonb_path_query
+------------------
+ 2
+(1 row)
+
+select jsonb_path_query('[1,2,3]', '$[last ? (@.type() == "number")]');
+ jsonb_path_query
+------------------
+ 3
+(1 row)
+
+select jsonb_path_query('[1,2,3]', '$[last ? (@.type() == "string")]');
+ERROR: Invalid SQL/JSON subscript
+select * from jsonb_path_query('{"a": 10}', '$');
+ jsonb_path_query
+------------------
+ {"a": 10}
+(1 row)
+
+select * from jsonb_path_query('{"a": 10}', '$ ? (@.a < $value)');
+ERROR: could not find jsonpath variable 'value'
+select * from jsonb_path_query('{"a": 10}', '$ ? (@.a < $value)', '{"value" : 13}');
+ jsonb_path_query
+------------------
+ {"a": 10}
+(1 row)
+
+select * from jsonb_path_query('{"a": 10}', '$ ? (@.a < $value)', '{"value" : 8}');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select * from jsonb_path_query('{"a": 10}', '$.a ? (@ < $value)', '{"value" : 13}');
+ jsonb_path_query
+------------------
+ 10
+(1 row)
+
+select * from jsonb_path_query('[10,11,12,13,14,15]', '$[*] ? (@ < $value)', '{"value" : 13}');
+ jsonb_path_query
+------------------
+ 10
+ 11
+ 12
+(3 rows)
+
+select * from jsonb_path_query('[10,11,12,13,14,15]', '$[0,1] ? (@ < $value)', '{"value" : 13}');
+ jsonb_path_query
+------------------
+ 10
+ 11
+(2 rows)
+
+select * from jsonb_path_query('[10,11,12,13,14,15]', '$[0 to 2] ? (@ < $value)', '{"value" : 15}');
+ jsonb_path_query
+------------------
+ 10
+ 11
+ 12
+(3 rows)
+
+select * from jsonb_path_query('[1,"1",2,"2",null]', '$[*] ? (@ == "1")');
+ jsonb_path_query
+------------------
+ "1"
+(1 row)
+
+select * from jsonb_path_query('[1,"1",2,"2",null]', '$[*] ? (@ == $value)', '{"value" : "1"}');
+ jsonb_path_query
+------------------
+ "1"
+(1 row)
+
+select * from jsonb_path_query('[1, "2", null]', '$[*] ? (@ != null)');
+ jsonb_path_query
+------------------
+ 1
+ "2"
+(2 rows)
+
+select * from jsonb_path_query('[1, "2", null]', '$[*] ? (@ == null)');
+ jsonb_path_query
+------------------
+ null
+(1 row)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**');
+ jsonb_path_query
+------------------
+ {"a": {"b": 1}}
+ {"b": 1}
+ 1
+(3 rows)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{0}');
+ jsonb_path_query
+------------------
+ {"a": {"b": 1}}
+(1 row)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{0 to last}');
+ jsonb_path_query
+------------------
+ {"a": {"b": 1}}
+ {"b": 1}
+ 1
+(3 rows)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{1}');
+ jsonb_path_query
+------------------
+ {"b": 1}
+(1 row)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{1 to last}');
+ jsonb_path_query
+------------------
+ {"b": 1}
+ 1
+(2 rows)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{2}');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{2 to last}');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{3 to last}');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{0}.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{1}.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{0 to last}.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{1 to last}.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{1 to 2}.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**{0}.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**{1}.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**{0 to last}.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**{1 to last}.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**{1 to 2}.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**{2 to 3}.b ? (@ > 0)');
+ jsonb_path_query
+------------------
+ 1
+(1 row)
+
+select jsonb '{"a": {"b": 1}}' @? '$.**.b ? ( @ > 0)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"b": 1}}' @? '$.**{0}.b ? ( @ > 0)';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '{"a": {"b": 1}}' @? '$.**{1}.b ? ( @ > 0)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"b": 1}}' @? '$.**{0 to last}.b ? ( @ > 0)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"b": 1}}' @? '$.**{1 to last}.b ? ( @ > 0)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"b": 1}}' @? '$.**{1 to 2}.b ? ( @ > 0)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**.b ? ( @ > 0)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**{0}.b ? ( @ > 0)';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**{1}.b ? ( @ > 0)';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**{0 to last}.b ? ( @ > 0)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**{1 to last}.b ? ( @ > 0)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**{1 to 2}.b ? ( @ > 0)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**{2 to 3}.b ? ( @ > 0)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb_path_query('{"g": {"x": 2}}', '$.g ? (exists (@.x))');
+ jsonb_path_query
+------------------
+ {"x": 2}
+(1 row)
+
+select jsonb_path_query('{"g": {"x": 2}}', '$.g ? (exists (@.y))');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('{"g": {"x": 2}}', '$.g ? (exists (@.x ? (@ >= 2) ))');
+ jsonb_path_query
+------------------
+ {"x": 2}
+(1 row)
+
+--test ternary logic
+select
+ x, y,
+ jsonb_path_query(
+ '[true, false, null]',
+ '$[*] ? (@ == true && ($x == true && $y == true) ||
+ @ == false && !($x == true && $y == true) ||
+ @ == null && ($x == true && $y == true) is unknown)',
+ jsonb_build_object('x', x, 'y', y)
+ ) as "x && y"
+from
+ (values (jsonb 'true'), ('false'), ('"null"')) x(x),
+ (values (jsonb 'true'), ('false'), ('"null"')) y(y);
+ x | y | x && y
+--------+--------+--------
+ true | true | true
+ true | false | false
+ true | "null" | null
+ false | true | false
+ false | false | false
+ false | "null" | false
+ "null" | true | null
+ "null" | false | false
+ "null" | "null" | null
+(9 rows)
+
+select
+ x, y,
+ jsonb_path_query(
+ '[true, false, null]',
+ '$[*] ? (@ == true && ($x == true || $y == true) ||
+ @ == false && !($x == true || $y == true) ||
+ @ == null && ($x == true || $y == true) is unknown)',
+ jsonb_build_object('x', x, 'y', y)
+ ) as "x || y"
+from
+ (values (jsonb 'true'), ('false'), ('"null"')) x(x),
+ (values (jsonb 'true'), ('false'), ('"null"')) y(y);
+ x | y | x || y
+--------+--------+--------
+ true | true | true
+ true | false | true
+ true | "null" | true
+ false | true | true
+ false | false | false
+ false | "null" | null
+ "null" | true | true
+ "null" | false | null
+ "null" | "null" | null
+(9 rows)
+
+select jsonb '{"a": 1, "b":1}' @? '$ ? (@.a == @.b)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"c": {"a": 1, "b":1}}' @? '$ ? (@.a == @.b)';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '{"c": {"a": 1, "b":1}}' @? '$.c ? (@.a == @.b)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"c": {"a": 1, "b":1}}' @? '$.c ? ($.c.a == @.b)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"c": {"a": 1, "b":1}}' @? '$.* ? (@.a == @.b)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"a": 1, "b":1}' @? '$.** ? (@.a == @.b)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"c": {"a": 1, "b":1}}' @? '$.** ? (@.a == @.b)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb_path_query('{"c": {"a": 2, "b":1}}', '$.** ? (@.a == 1 + 1)');
+ jsonb_path_query
+------------------
+ {"a": 2, "b": 1}
+(1 row)
+
+select jsonb_path_query('{"c": {"a": 2, "b":1}}', '$.** ? (@.a == (1 + 1))');
+ jsonb_path_query
+------------------
+ {"a": 2, "b": 1}
+(1 row)
+
+select jsonb_path_query('{"c": {"a": 2, "b":1}}', '$.** ? (@.a == @.b + 1)');
+ jsonb_path_query
+------------------
+ {"a": 2, "b": 1}
+(1 row)
+
+select jsonb_path_query('{"c": {"a": 2, "b":1}}', '$.** ? (@.a == (@.b + 1))');
+ jsonb_path_query
+------------------
+ {"a": 2, "b": 1}
+(1 row)
+
+select jsonb '{"c": {"a": -1, "b":1}}' @? '$.** ? (@.a == - 1)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"c": {"a": -1, "b":1}}' @? '$.** ? (@.a == -1)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"c": {"a": -1, "b":1}}' @? '$.** ? (@.a == -@.b)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"c": {"a": -1, "b":1}}' @? '$.** ? (@.a == - @.b)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"c": {"a": 0, "b":1}}' @? '$.** ? (@.a == 1 - @.b)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"c": {"a": 2, "b":1}}' @? '$.** ? (@.a == 1 - - @.b)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '{"c": {"a": 0, "b":1}}' @? '$.** ? (@.a == 1 - +@.b)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '[1,2,3]' @? '$ ? (+@[*] > +2)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '[1,2,3]' @? '$ ? (+@[*] > +3)';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '[1,2,3]' @? '$ ? (-@[*] < -2)';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '[1,2,3]' @? '$ ? (-@[*] < -3)';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '1' @? '$ ? ($ > 0)';
+ ?column?
+----------
+ t
+(1 row)
+
+-- arithmetic errors
+select jsonb_path_query('[1,2,0,3]', '$[*] ? (2 / @ > 0)');
+ jsonb_path_query
+------------------
+ 1
+ 2
+ 3
+(3 rows)
+
+select jsonb_path_query('[1,2,0,3]', '$[*] ? ((2 / @ > 0) is unknown)');
+ jsonb_path_query
+------------------
+ 0
+(1 row)
+
+select jsonb_path_query('0', '1 / $');
+ERROR: division by zero
+-- unwrapping of operator arguments in lax mode
+select jsonb_path_query('{"a": [2]}', 'lax $.a * 3');
+ jsonb_path_query
+------------------
+ 6
+(1 row)
+
+select jsonb_path_query('{"a": [2]}', 'lax $.a + 3');
+ jsonb_path_query
+------------------
+ 5
+(1 row)
+
+select jsonb_path_query('{"a": [2, 3, 4]}', 'lax -$.a');
+ jsonb_path_query
+------------------
+ -2
+ -3
+ -4
+(3 rows)
+
+-- should fail
+select jsonb_path_query('{"a": [1, 2]}', 'lax $.a * 3');
+ERROR: Singleton SQL/JSON item required
+-- extension: boolean expressions
+select jsonb_path_query('2', '$ > 1');
+ jsonb_path_query
+------------------
+ true
+(1 row)
+
+select jsonb_path_query('2', '$ <= 1');
+ jsonb_path_query
+------------------
+ false
+(1 row)
+
+select jsonb_path_query('2', '$ == "2"');
+ jsonb_path_query
+------------------
+ null
+(1 row)
+
+select jsonb '2' @@ '$ > 1';
+ ?column?
+----------
+ t
+(1 row)
+
+select jsonb '2' @@ '$ <= 1';
+ ?column?
+----------
+ f
+(1 row)
+
+select jsonb '2' @@ '$ == "2"';
+ ?column?
+----------
+
+(1 row)
+
+select jsonb '2' @@ '1';
+ ?column?
+----------
+
+(1 row)
+
+select jsonb '{}' @@ '$';
+ ?column?
+----------
+
+(1 row)
+
+select jsonb '[]' @@ '$';
+ ?column?
+----------
+
+(1 row)
+
+select jsonb '[1,2,3]' @@ '$[*]';
+ERROR: Singleton SQL/JSON item required
+select jsonb '[]' @@ '$[*]';
+ERROR: Singleton SQL/JSON item required
+select jsonb_path_match('[[1, true], [2, false]]', 'strict $[*] ? (@[0] > $x) [1]', '{"x": 1}');
+ jsonb_path_match
+------------------
+ f
+(1 row)
+
+select jsonb_path_match('[[1, true], [2, false]]', 'strict $[*] ? (@[0] < $x) [1]', '{"x": 2}');
+ jsonb_path_match
+------------------
+ t
+(1 row)
+
+select jsonb_path_query('[null,1,true,"a",[],{}]', '$.type()');
+ jsonb_path_query
+------------------
+ "array"
+(1 row)
+
+select jsonb_path_query('[null,1,true,"a",[],{}]', 'lax $.type()');
+ jsonb_path_query
+------------------
+ "array"
+(1 row)
+
+select jsonb_path_query('[null,1,true,"a",[],{}]', '$[*].type()');
+ jsonb_path_query
+------------------
+ "null"
+ "number"
+ "boolean"
+ "string"
+ "array"
+ "object"
+(6 rows)
+
+select jsonb_path_query('null', 'null.type()');
+ jsonb_path_query
+------------------
+ "null"
+(1 row)
+
+select jsonb_path_query('null', 'true.type()');
+ jsonb_path_query
+------------------
+ "boolean"
+(1 row)
+
+select jsonb_path_query('null', '123.type()');
+ jsonb_path_query
+------------------
+ "number"
+(1 row)
+
+select jsonb_path_query('null', '"123".type()');
+ jsonb_path_query
+------------------
+ "string"
+(1 row)
+
+select jsonb_path_query('{"a": 2}', '($.a - 5).abs() + 10');
+ jsonb_path_query
+------------------
+ 13
+(1 row)
+
+select jsonb_path_query('{"a": 2.5}', '-($.a * $.a).floor() + 10');
+ jsonb_path_query
+------------------
+ 4
+(1 row)
+
+select jsonb_path_query('[1, 2, 3]', '($[*] > 2) ? (@ == true)');
+ jsonb_path_query
+------------------
+ true
+(1 row)
+
+select jsonb_path_query('[1, 2, 3]', '($[*] > 3).type()');
+ jsonb_path_query
+------------------
+ "boolean"
+(1 row)
+
+select jsonb_path_query('[1, 2, 3]', '($[*].a > 3).type()');
+ jsonb_path_query
+------------------
+ "boolean"
+(1 row)
+
+select jsonb_path_query('[1, 2, 3]', 'strict ($[*].a > 3).type()');
+ jsonb_path_query
+------------------
+ "null"
+(1 row)
+
+select jsonb_path_query('[1,null,true,"11",[],[1],[1,2,3],{},{"a":1,"b":2}]', 'strict $[*].size()');
+ERROR: SQL/JSON array not found
+select jsonb_path_query('[1,null,true,"11",[],[1],[1,2,3],{},{"a":1,"b":2}]', 'lax $[*].size()');
+ jsonb_path_query
+------------------
+ 1
+ 1
+ 1
+ 1
+ 0
+ 1
+ 3
+ 1
+ 1
+(9 rows)
+
+select jsonb_path_query('[0, 1, -2, -3.4, 5.6]', '$[*].abs()');
+ jsonb_path_query
+------------------
+ 0
+ 1
+ 2
+ 3.4
+ 5.6
+(5 rows)
+
+select jsonb_path_query('[0, 1, -2, -3.4, 5.6]', '$[*].floor()');
+ jsonb_path_query
+------------------
+ 0
+ 1
+ -2
+ -4
+ 5
+(5 rows)
+
+select jsonb_path_query('[0, 1, -2, -3.4, 5.6]', '$[*].ceiling()');
+ jsonb_path_query
+------------------
+ 0
+ 1
+ -2
+ -3
+ 6
+(5 rows)
+
+select jsonb_path_query('[0, 1, -2, -3.4, 5.6]', '$[*].ceiling().abs()');
+ jsonb_path_query
+------------------
+ 0
+ 1
+ 2
+ 3
+ 6
+(5 rows)
+
+select jsonb_path_query('[0, 1, -2, -3.4, 5.6]', '$[*].ceiling().abs().type()');
+ jsonb_path_query
+------------------
+ "number"
+ "number"
+ "number"
+ "number"
+ "number"
+(5 rows)
+
+select jsonb_path_query('[{},1]', '$[*].keyvalue()');
+ERROR: SQL/JSON object not found
+select jsonb_path_query('{}', '$.keyvalue()');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('{"a": 1, "b": [1, 2], "c": {"a": "bbb"}}', '$.keyvalue()');
+ jsonb_path_query
+----------------------------------------------
+ {"id": 0, "key": "a", "value": 1}
+ {"id": 0, "key": "b", "value": [1, 2]}
+ {"id": 0, "key": "c", "value": {"a": "bbb"}}
+(3 rows)
+
+select jsonb_path_query('[{"a": 1, "b": [1, 2]}, {"c": {"a": "bbb"}}]', '$[*].keyvalue()');
+ jsonb_path_query
+-----------------------------------------------
+ {"id": 12, "key": "a", "value": 1}
+ {"id": 12, "key": "b", "value": [1, 2]}
+ {"id": 72, "key": "c", "value": {"a": "bbb"}}
+(3 rows)
+
+select jsonb_path_query('[{"a": 1, "b": [1, 2]}, {"c": {"a": "bbb"}}]', 'strict $.keyvalue()');
+ERROR: SQL/JSON object not found
+select jsonb_path_query('[{"a": 1, "b": [1, 2]}, {"c": {"a": "bbb"}}]', 'lax $.keyvalue()');
+ jsonb_path_query
+-----------------------------------------------
+ {"id": 12, "key": "a", "value": 1}
+ {"id": 12, "key": "b", "value": [1, 2]}
+ {"id": 72, "key": "c", "value": {"a": "bbb"}}
+(3 rows)
+
+select jsonb_path_query('null', '$.double()');
+ERROR: Non-numeric SQL/JSON item
+select jsonb_path_query('true', '$.double()');
+ERROR: Non-numeric SQL/JSON item
+select jsonb_path_query('[]', '$.double()');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('[]', 'strict $.double()');
+ERROR: Non-numeric SQL/JSON item
+select jsonb_path_query('{}', '$.double()');
+ERROR: Non-numeric SQL/JSON item
+select jsonb_path_query('1.23', '$.double()');
+ jsonb_path_query
+------------------
+ 1.23
+(1 row)
+
+select jsonb_path_query('"1.23"', '$.double()');
+ jsonb_path_query
+------------------
+ 1.23
+(1 row)
+
+select jsonb_path_query('"1.23aaa"', '$.double()');
+ERROR: Non-numeric SQL/JSON item
+select jsonb_path_query('["", "a", "abc", "abcabc"]', '$[*] ? (@ starts with "abc")');
+ jsonb_path_query
+------------------
+ "abc"
+ "abcabc"
+(2 rows)
+
+select jsonb_path_query('["", "a", "abc", "abcabc"]', 'strict $ ? (@[*] starts with "abc")');
+ jsonb_path_query
+----------------------------
+ ["", "a", "abc", "abcabc"]
+(1 row)
+
+select jsonb_path_query('["", "a", "abd", "abdabc"]', 'strict $ ? (@[*] starts with "abc")');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('["abc", "abcabc", null, 1]', 'strict $ ? (@[*] starts with "abc")');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('["abc", "abcabc", null, 1]', 'strict $ ? ((@[*] starts with "abc") is unknown)');
+ jsonb_path_query
+----------------------------
+ ["abc", "abcabc", null, 1]
+(1 row)
+
+select jsonb_path_query('[[null, 1, "abc", "abcabc"]]', 'lax $ ? (@[*] starts with "abc")');
+ jsonb_path_query
+----------------------------
+ [null, 1, "abc", "abcabc"]
+(1 row)
+
+select jsonb_path_query('[[null, 1, "abd", "abdabc"]]', 'lax $ ? ((@[*] starts with "abc") is unknown)');
+ jsonb_path_query
+----------------------------
+ [null, 1, "abd", "abdabc"]
+(1 row)
+
+select jsonb_path_query('[null, 1, "abd", "abdabc"]', 'lax $[*] ? ((@ starts with "abc") is unknown)');
+ jsonb_path_query
+------------------
+ null
+ 1
+(2 rows)
+
+select jsonb_path_query('[null, 1, "abc", "abd", "aBdC", "abdacb", "babc"]', 'lax $[*] ? (@ like_regex "^ab.*c")');
+ jsonb_path_query
+------------------
+ "abc"
+ "abdacb"
+(2 rows)
+
+select jsonb_path_query('[null, 1, "abc", "abd", "aBdC", "abdacb", "babc"]', 'lax $[*] ? (@ like_regex "^ab.*c" flag "i")');
+ jsonb_path_query
+------------------
+ "abc"
+ "aBdC"
+ "abdacb"
+(3 rows)
+
+select jsonb_path_query('null', '$.datetime()');
+ERROR: Invalid argument for SQL/JSON datetime function
+select jsonb_path_query('true', '$.datetime()');
+ERROR: Invalid argument for SQL/JSON datetime function
+select jsonb_path_query('1', '$.datetime()');
+ERROR: Invalid argument for SQL/JSON datetime function
+select jsonb_path_query('[]', '$.datetime()');
+ jsonb_path_query
+------------------
+(0 rows)
+
+select jsonb_path_query('[]', 'strict $.datetime()');
+ERROR: Invalid argument for SQL/JSON datetime function
+select jsonb_path_query('{}', '$.datetime()');
+ERROR: Invalid argument for SQL/JSON datetime function
+select jsonb_path_query('""', '$.datetime()');
+ERROR: Invalid argument for SQL/JSON datetime function
+select jsonb_path_query('"10-03-2017"', '$.datetime("dd-mm-yyyy")');
+ jsonb_path_query
+------------------
+ "2017-03-10"
+(1 row)
+
+select jsonb_path_query('"10-03-2017"', '$.datetime("dd-mm-yyyy").type()');
+ jsonb_path_query
+------------------
+ "date"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy")');
+ jsonb_path_query
+------------------
+ "2017-03-10"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy").type()');
+ jsonb_path_query
+------------------
+ "date"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34"', ' $.datetime("dd-mm-yyyy HH24:MI").type()');
+ jsonb_path_query
+-------------------------------
+ "timestamp without time zone"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34 +05:20"', '$.datetime("dd-mm-yyyy HH24:MI TZH:TZM").type()');
+ jsonb_path_query
+----------------------------
+ "timestamp with time zone"
+(1 row)
+
+select jsonb_path_query('"12:34:56"', '$.datetime("HH24:MI:SS").type()');
+ jsonb_path_query
+--------------------------
+ "time without time zone"
+(1 row)
+
+select jsonb_path_query('"12:34:56 +05:20"', '$.datetime("HH24:MI:SS TZH:TZM").type()');
+ jsonb_path_query
+-----------------------
+ "time with time zone"
+(1 row)
+
+set time zone '+00';
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI")');
+ jsonb_path_query
+-----------------------
+ "2017-03-10T12:34:00"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH")');
+ERROR: Invalid argument for SQL/JSON datetime function
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH", "+00")');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00+00:00"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH", "+00:12")');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00+00:12"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH", "-00:12:34")');
+ jsonb_path_query
+--------------------------------
+ "2017-03-10T12:34:00-00:12:34"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH", "UTC")');
+ERROR: Invalid argument for SQL/JSON datetime function
+select jsonb_path_query('"10-03-2017 12:34 +05"', '$.datetime("dd-mm-yyyy HH24:MI TZH")');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00+05:00"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34 -05"', '$.datetime("dd-mm-yyyy HH24:MI TZH")');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00-05:00"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34 +05:20"', '$.datetime("dd-mm-yyyy HH24:MI TZH:TZM")');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00+05:20"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34 -05:20"', '$.datetime("dd-mm-yyyy HH24:MI TZH:TZM")');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00-05:20"
+(1 row)
+
+select jsonb_path_query('"12:34"', '$.datetime("HH24:MI")');
+ jsonb_path_query
+------------------
+ "12:34:00"
+(1 row)
+
+select jsonb_path_query('"12:34"', '$.datetime("HH24:MI TZH")');
+ERROR: Invalid argument for SQL/JSON datetime function
+select jsonb_path_query('"12:34"', '$.datetime("HH24:MI TZH", "+00")');
+ jsonb_path_query
+------------------
+ "12:34:00+00:00"
+(1 row)
+
+select jsonb_path_query('"12:34 +05"', '$.datetime("HH24:MI TZH")');
+ jsonb_path_query
+------------------
+ "12:34:00+05:00"
+(1 row)
+
+select jsonb_path_query('"12:34 -05"', '$.datetime("HH24:MI TZH")');
+ jsonb_path_query
+------------------
+ "12:34:00-05:00"
+(1 row)
+
+select jsonb_path_query('"12:34 +05:20"', '$.datetime("HH24:MI TZH:TZM")');
+ jsonb_path_query
+------------------
+ "12:34:00+05:20"
+(1 row)
+
+select jsonb_path_query('"12:34 -05:20"', '$.datetime("HH24:MI TZH:TZM")');
+ jsonb_path_query
+------------------
+ "12:34:00-05:20"
+(1 row)
+
+set time zone '+10';
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI")');
+ jsonb_path_query
+-----------------------
+ "2017-03-10T12:34:00"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH")');
+ERROR: Invalid argument for SQL/JSON datetime function
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH", "+10")');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00+10:00"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34 +05"', '$.datetime("dd-mm-yyyy HH24:MI TZH")');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00+05:00"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34 -05"', '$.datetime("dd-mm-yyyy HH24:MI TZH")');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00-05:00"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34 +05:20"', '$.datetime("dd-mm-yyyy HH24:MI TZH:TZM")');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00+05:20"
+(1 row)
+
+select jsonb_path_query('"10-03-2017 12:34 -05:20"', '$.datetime("dd-mm-yyyy HH24:MI TZH:TZM")');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00-05:20"
+(1 row)
+
+select jsonb_path_query('"12:34"', '$.datetime("HH24:MI")');
+ jsonb_path_query
+------------------
+ "12:34:00"
+(1 row)
+
+select jsonb_path_query('"12:34"', '$.datetime("HH24:MI TZH")');
+ERROR: Invalid argument for SQL/JSON datetime function
+select jsonb_path_query('"12:34"', '$.datetime("HH24:MI TZH", "+10")');
+ jsonb_path_query
+------------------
+ "12:34:00+10:00"
+(1 row)
+
+select jsonb_path_query('"12:34 +05"', '$.datetime("HH24:MI TZH")');
+ jsonb_path_query
+------------------
+ "12:34:00+05:00"
+(1 row)
+
+select jsonb_path_query('"12:34 -05"', '$.datetime("HH24:MI TZH")');
+ jsonb_path_query
+------------------
+ "12:34:00-05:00"
+(1 row)
+
+select jsonb_path_query('"12:34 +05:20"', '$.datetime("HH24:MI TZH:TZM")');
+ jsonb_path_query
+------------------
+ "12:34:00+05:20"
+(1 row)
+
+select jsonb_path_query('"12:34 -05:20"', '$.datetime("HH24:MI TZH:TZM")');
+ jsonb_path_query
+------------------
+ "12:34:00-05:20"
+(1 row)
+
+set time zone default;
+select jsonb_path_query('"2017-03-10"', '$.datetime().type()');
+ jsonb_path_query
+------------------
+ "date"
+(1 row)
+
+select jsonb_path_query('"2017-03-10"', '$.datetime()');
+ jsonb_path_query
+------------------
+ "2017-03-10"
+(1 row)
+
+select jsonb_path_query('"2017-03-10 12:34:56"', '$.datetime().type()');
+ jsonb_path_query
+-------------------------------
+ "timestamp without time zone"
+(1 row)
+
+select jsonb_path_query('"2017-03-10 12:34:56"', '$.datetime()');
+ jsonb_path_query
+-----------------------
+ "2017-03-10T12:34:56"
+(1 row)
+
+select jsonb_path_query('"2017-03-10 12:34:56 +3"', '$.datetime().type()');
+ jsonb_path_query
+----------------------------
+ "timestamp with time zone"
+(1 row)
+
+select jsonb_path_query('"2017-03-10 12:34:56 +3"', '$.datetime()');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:56+03:00"
+(1 row)
+
+select jsonb_path_query('"2017-03-10 12:34:56 +3:10"', '$.datetime().type()');
+ jsonb_path_query
+----------------------------
+ "timestamp with time zone"
+(1 row)
+
+select jsonb_path_query('"2017-03-10 12:34:56 +3:10"', '$.datetime()');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:56+03:10"
+(1 row)
+
+select jsonb_path_query('"12:34:56"', '$.datetime().type()');
+ jsonb_path_query
+--------------------------
+ "time without time zone"
+(1 row)
+
+select jsonb_path_query('"12:34:56"', '$.datetime()');
+ jsonb_path_query
+------------------
+ "12:34:56"
+(1 row)
+
+select jsonb_path_query('"12:34:56 +3"', '$.datetime().type()');
+ jsonb_path_query
+-----------------------
+ "time with time zone"
+(1 row)
+
+select jsonb_path_query('"12:34:56 +3"', '$.datetime()');
+ jsonb_path_query
+------------------
+ "12:34:56+03:00"
+(1 row)
+
+select jsonb_path_query('"12:34:56 +3:10"', '$.datetime().type()');
+ jsonb_path_query
+-----------------------
+ "time with time zone"
+(1 row)
+
+select jsonb_path_query('"12:34:56 +3:10"', '$.datetime()');
+ jsonb_path_query
+------------------
+ "12:34:56+03:10"
+(1 row)
+
+set time zone '+00';
+-- date comparison
+select jsonb_path_query(
+ '["2017-03-10", "2017-03-11", "2017-03-09", "12:34:56", "01:02:03 +04", "2017-03-10 00:00:00", "2017-03-10 12:34:56", "2017-03-10 01:02:03 +04", "2017-03-10 03:00:00 +03"]',
+ '$[*].datetime() ? (@ == "10.03.2017".datetime("dd.mm.yyyy"))');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10"
+ "2017-03-10T00:00:00"
+ "2017-03-10T03:00:00+03:00"
+(3 rows)
+
+select jsonb_path_query(
+ '["2017-03-10", "2017-03-11", "2017-03-09", "12:34:56", "01:02:03 +04", "2017-03-10 00:00:00", "2017-03-10 12:34:56", "2017-03-10 01:02:03 +04", "2017-03-10 03:00:00 +03"]',
+ '$[*].datetime() ? (@ >= "10.03.2017".datetime("dd.mm.yyyy"))');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10"
+ "2017-03-11"
+ "2017-03-10T00:00:00"
+ "2017-03-10T12:34:56"
+ "2017-03-10T03:00:00+03:00"
+(5 rows)
+
+select jsonb_path_query(
+ '["2017-03-10", "2017-03-11", "2017-03-09", "12:34:56", "01:02:03 +04", "2017-03-10 00:00:00", "2017-03-10 12:34:56", "2017-03-10 01:02:03 +04", "2017-03-10 03:00:00 +03"]',
+ '$[*].datetime() ? (@ < "10.03.2017".datetime("dd.mm.yyyy"))');
+ jsonb_path_query
+-----------------------------
+ "2017-03-09"
+ "2017-03-10T01:02:03+04:00"
+(2 rows)
+
+-- time comparison
+select jsonb_path_query(
+ '["12:34:00", "12:35:00", "12:36:00", "12:35:00 +00", "12:35:00 +01", "13:35:00 +01", "2017-03-10", "2017-03-10 12:35:00", "2017-03-10 12:35:00 +01"]',
+ '$[*].datetime() ? (@ == "12:35".datetime("HH24:MI"))');
+ jsonb_path_query
+------------------
+ "12:35:00"
+ "12:35:00+00:00"
+(2 rows)
+
+select jsonb_path_query(
+ '["12:34:00", "12:35:00", "12:36:00", "12:35:00 +00", "12:35:00 +01", "13:35:00 +01", "2017-03-10", "2017-03-10 12:35:00", "2017-03-10 12:35:00 +01"]',
+ '$[*].datetime() ? (@ >= "12:35".datetime("HH24:MI"))');
+ jsonb_path_query
+------------------
+ "12:35:00"
+ "12:36:00"
+ "12:35:00+00:00"
+(3 rows)
+
+select jsonb_path_query(
+ '["12:34:00", "12:35:00", "12:36:00", "12:35:00 +00", "12:35:00 +01", "13:35:00 +01", "2017-03-10", "2017-03-10 12:35:00", "2017-03-10 12:35:00 +01"]',
+ '$[*].datetime() ? (@ < "12:35".datetime("HH24:MI"))');
+ jsonb_path_query
+------------------
+ "12:34:00"
+ "12:35:00+01:00"
+ "13:35:00+01:00"
+(3 rows)
+
+-- timetz comparison
+select jsonb_path_query(
+ '["12:34:00 +01", "12:35:00 +01", "12:36:00 +01", "12:35:00 +02", "12:35:00 -02", "10:35:00", "11:35:00", "12:35:00", "2017-03-10", "2017-03-10 12:35:00", "2017-03-10 12:35:00 +1"]',
+ '$[*].datetime() ? (@ == "12:35 +1".datetime("HH24:MI TZH"))');
+ jsonb_path_query
+------------------
+ "12:35:00+01:00"
+(1 row)
+
+select jsonb_path_query(
+ '["12:34:00 +01", "12:35:00 +01", "12:36:00 +01", "12:35:00 +02", "12:35:00 -02", "10:35:00", "11:35:00", "12:35:00", "2017-03-10", "2017-03-10 12:35:00", "2017-03-10 12:35:00 +1"]',
+ '$[*].datetime() ? (@ >= "12:35 +1".datetime("HH24:MI TZH"))');
+ jsonb_path_query
+------------------
+ "12:35:00+01:00"
+ "12:36:00+01:00"
+ "12:35:00-02:00"
+ "11:35:00"
+ "12:35:00"
+(5 rows)
+
+select jsonb_path_query(
+ '["12:34:00 +01", "12:35:00 +01", "12:36:00 +01", "12:35:00 +02", "12:35:00 -02", "10:35:00", "11:35:00", "12:35:00", "2017-03-10", "2017-03-10 12:35:00", "2017-03-10 12:35:00 +1"]',
+ '$[*].datetime() ? (@ < "12:35 +1".datetime("HH24:MI TZH"))');
+ jsonb_path_query
+------------------
+ "12:34:00+01:00"
+ "12:35:00+02:00"
+ "10:35:00"
+(3 rows)
+
+-- timestamp comparison
+select jsonb_path_query(
+ '["2017-03-10 12:34:00", "2017-03-10 12:35:00", "2017-03-10 12:36:00", "2017-03-10 12:35:00 +01", "2017-03-10 13:35:00 +01", "2017-03-10 12:35:00 -01", "2017-03-10", "2017-03-11", "12:34:56", "12:34:56 +01"]',
+ '$[*].datetime() ? (@ == "10.03.2017 12:35".datetime("dd.mm.yyyy HH24:MI"))');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:35:00"
+ "2017-03-10T13:35:00+01:00"
+(2 rows)
+
+select jsonb_path_query(
+ '["2017-03-10 12:34:00", "2017-03-10 12:35:00", "2017-03-10 12:36:00", "2017-03-10 12:35:00 +01", "2017-03-10 13:35:00 +01", "2017-03-10 12:35:00 -01", "2017-03-10", "2017-03-11", "12:34:56", "12:34:56 +01"]',
+ '$[*].datetime() ? (@ >= "10.03.2017 12:35".datetime("dd.mm.yyyy HH24:MI"))');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:35:00"
+ "2017-03-10T12:36:00"
+ "2017-03-10T13:35:00+01:00"
+ "2017-03-10T12:35:00-01:00"
+ "2017-03-11"
+(5 rows)
+
+select jsonb_path_query(
+ '["2017-03-10 12:34:00", "2017-03-10 12:35:00", "2017-03-10 12:36:00", "2017-03-10 12:35:00 +01", "2017-03-10 13:35:00 +01", "2017-03-10 12:35:00 -01", "2017-03-10", "2017-03-11", "12:34:56", "12:34:56 +01"]',
+ '$[*].datetime() ? (@ < "10.03.2017 12:35".datetime("dd.mm.yyyy HH24:MI"))');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00"
+ "2017-03-10T12:35:00+01:00"
+ "2017-03-10"
+(3 rows)
+
+-- timestamptz comparison
+select jsonb_path_query(
+ '["2017-03-10 12:34:00 +01", "2017-03-10 12:35:00 +01", "2017-03-10 12:36:00 +01", "2017-03-10 12:35:00 +02", "2017-03-10 12:35:00 -02", "2017-03-10 10:35:00", "2017-03-10 11:35:00", "2017-03-10 12:35:00", "2017-03-10", "2017-03-11", "12:34:56", "12:34:56 +01"]',
+ '$[*].datetime() ? (@ == "10.03.2017 12:35 +1".datetime("dd.mm.yyyy HH24:MI TZH"))');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:35:00+01:00"
+ "2017-03-10T11:35:00"
+(2 rows)
+
+select jsonb_path_query(
+ '["2017-03-10 12:34:00 +01", "2017-03-10 12:35:00 +01", "2017-03-10 12:36:00 +01", "2017-03-10 12:35:00 +02", "2017-03-10 12:35:00 -02", "2017-03-10 10:35:00", "2017-03-10 11:35:00", "2017-03-10 12:35:00", "2017-03-10", "2017-03-11", "12:34:56", "12:34:56 +01"]',
+ '$[*].datetime() ? (@ >= "10.03.2017 12:35 +1".datetime("dd.mm.yyyy HH24:MI TZH"))');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:35:00+01:00"
+ "2017-03-10T12:36:00+01:00"
+ "2017-03-10T12:35:00-02:00"
+ "2017-03-10T11:35:00"
+ "2017-03-10T12:35:00"
+ "2017-03-11"
+(6 rows)
+
+select jsonb_path_query(
+ '["2017-03-10 12:34:00 +01", "2017-03-10 12:35:00 +01", "2017-03-10 12:36:00 +01", "2017-03-10 12:35:00 +02", "2017-03-10 12:35:00 -02", "2017-03-10 10:35:00", "2017-03-10 11:35:00", "2017-03-10 12:35:00", "2017-03-10", "2017-03-11", "12:34:56", "12:34:56 +01"]',
+ '$[*].datetime() ? (@ < "10.03.2017 12:35 +1".datetime("dd.mm.yyyy HH24:MI TZH"))');
+ jsonb_path_query
+-----------------------------
+ "2017-03-10T12:34:00+01:00"
+ "2017-03-10T12:35:00+02:00"
+ "2017-03-10T10:35:00"
+ "2017-03-10"
+(4 rows)
+
+set time zone default;
+-- jsonpath operators
+SELECT jsonb_path_query('[{"a": 1}, {"a": 2}]', '$[*]');
+ jsonb_path_query
+------------------
+ {"a": 1}
+ {"a": 2}
+(2 rows)
+
+SELECT jsonb_path_query('[{"a": 1}, {"a": 2}]', '$[*] ? (@.a > 10)');
+ jsonb_path_query
+------------------
+(0 rows)
+
+SELECT jsonb_path_query_array('[{"a": 1}, {"a": 2}]', '$[*].a');
+ jsonb_path_query_array
+------------------------
+ [1, 2]
+(1 row)
+
+SELECT jsonb_path_query_array('[{"a": 1}, {"a": 2}]', '$[*].a ? (@ == 1)');
+ jsonb_path_query_array
+------------------------
+ [1]
+(1 row)
+
+SELECT jsonb_path_query_array('[{"a": 1}, {"a": 2}]', '$[*].a ? (@ > 10)');
+ jsonb_path_query_array
+------------------------
+ []
+(1 row)
+
+SELECT jsonb_path_query_array('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*].a ? (@ > $min && @ < $max)', '{"min": 1, "max": 4}');
+ jsonb_path_query_array
+------------------------
+ [2, 3]
+(1 row)
+
+SELECT jsonb_path_query_array('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*].a ? (@ > $min && @ < $max)', '{"min": 3, "max": 4}');
+ jsonb_path_query_array
+------------------------
+ []
+(1 row)
+
+SELECT jsonb_path_query_first('[{"a": 1}, {"a": 2}]', '$[*].a');
+ jsonb_path_query_first
+------------------------
+ 1
+(1 row)
+
+SELECT jsonb_path_query_first('[{"a": 1}, {"a": 2}]', '$[*].a ? (@ == 1)');
+ jsonb_path_query_first
+------------------------
+ 1
+(1 row)
+
+SELECT jsonb_path_query_first('[{"a": 1}, {"a": 2}]', '$[*].a ? (@ > 10)');
+ jsonb_path_query_first
+------------------------
+
+(1 row)
+
+SELECT jsonb_path_query_first('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*].a ? (@ > $min && @ < $max)', '{"min": 1, "max": 4}');
+ jsonb_path_query_first
+------------------------
+ 2
+(1 row)
+
+SELECT jsonb_path_query_first('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*].a ? (@ > $min && @ < $max)', '{"min": 3, "max": 4}');
+ jsonb_path_query_first
+------------------------
+
+(1 row)
+
+SELECT jsonb '[{"a": 1}, {"a": 2}]' @? '$[*].a ? (@ > 1)';
+ ?column?
+----------
+ t
+(1 row)
+
+SELECT jsonb '[{"a": 1}, {"a": 2}]' @? '$[*] ? (@.a > 2)';
+ ?column?
+----------
+ f
+(1 row)
+
+SELECT jsonb_path_exists('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*] ? (@.a > $min && @.a < $max)', '{"min": 1, "max": 4}');
+ jsonb_path_exists
+-------------------
+ t
+(1 row)
+
+SELECT jsonb_path_exists('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*] ? (@.a > $min && @.a < $max)', '{"min": 3, "max": 4}');
+ jsonb_path_exists
+-------------------
+ f
+(1 row)
+
+SELECT jsonb '[{"a": 1}, {"a": 2}]' @@ '$[*].a > 1';
+ ?column?
+----------
+ t
+(1 row)
+
+SELECT jsonb '[{"a": 1}, {"a": 2}]' @@ '$[*].a > 2';
+ ?column?
+----------
+ f
+(1 row)
+
diff --git a/src/test/regress/expected/jsonpath.out b/src/test/regress/expected/jsonpath.out
new file mode 100644
index 0000000..a2143fd
--- /dev/null
+++ b/src/test/regress/expected/jsonpath.out
@@ -0,0 +1,788 @@
+--jsonpath io
+select ''::jsonpath;
+ERROR: invalid input syntax for jsonpath: ""
+LINE 1: select ''::jsonpath;
+ ^
+select '$'::jsonpath;
+ jsonpath
+----------
+ $
+(1 row)
+
+select 'strict $'::jsonpath;
+ jsonpath
+----------
+ strict $
+(1 row)
+
+select 'lax $'::jsonpath;
+ jsonpath
+----------
+ $
+(1 row)
+
+select '$.a'::jsonpath;
+ jsonpath
+----------
+ $."a"
+(1 row)
+
+select '$.a.v'::jsonpath;
+ jsonpath
+-----------
+ $."a"."v"
+(1 row)
+
+select '$.a.*'::jsonpath;
+ jsonpath
+----------
+ $."a".*
+(1 row)
+
+select '$.*[*]'::jsonpath;
+ jsonpath
+----------
+ $.*[*]
+(1 row)
+
+select '$.a[*]'::jsonpath;
+ jsonpath
+----------
+ $."a"[*]
+(1 row)
+
+select '$.a[*][*]'::jsonpath;
+ jsonpath
+-------------
+ $."a"[*][*]
+(1 row)
+
+select '$[*]'::jsonpath;
+ jsonpath
+----------
+ $[*]
+(1 row)
+
+select '$[0]'::jsonpath;
+ jsonpath
+----------
+ $[0]
+(1 row)
+
+select '$[*][0]'::jsonpath;
+ jsonpath
+----------
+ $[*][0]
+(1 row)
+
+select '$[*].a'::jsonpath;
+ jsonpath
+----------
+ $[*]."a"
+(1 row)
+
+select '$[*][0].a.b'::jsonpath;
+ jsonpath
+-----------------
+ $[*][0]."a"."b"
+(1 row)
+
+select '$.a.**.b'::jsonpath;
+ jsonpath
+--------------
+ $."a".**."b"
+(1 row)
+
+select '$.a.**{2}.b'::jsonpath;
+ jsonpath
+-----------------
+ $."a".**{2}."b"
+(1 row)
+
+select '$.a.**{2 to 2}.b'::jsonpath;
+ jsonpath
+-----------------
+ $."a".**{2}."b"
+(1 row)
+
+select '$.a.**{2 to 5}.b'::jsonpath;
+ jsonpath
+----------------------
+ $."a".**{2 to 5}."b"
+(1 row)
+
+select '$.a.**{0 to 5}.b'::jsonpath;
+ jsonpath
+----------------------
+ $."a".**{0 to 5}."b"
+(1 row)
+
+select '$.a.**{5 to last}.b'::jsonpath;
+ jsonpath
+-------------------------
+ $."a".**{5 to last}."b"
+(1 row)
+
+select '$+1'::jsonpath;
+ jsonpath
+----------
+ ($ + 1)
+(1 row)
+
+select '$-1'::jsonpath;
+ jsonpath
+----------
+ ($ - 1)
+(1 row)
+
+select '$--+1'::jsonpath;
+ jsonpath
+----------
+ ($ - -1)
+(1 row)
+
+select '$.a/+-1'::jsonpath;
+ jsonpath
+--------------
+ ($."a" / -1)
+(1 row)
+
+select '"\b\f\r\n\t\v\"\''\\"'::jsonpath;
+ jsonpath
+-------------------------
+ "\b\f\r\n\t\u000b\"'\\"
+(1 row)
+
+select '''\b\f\r\n\t\v\"\''\\'''::jsonpath;
+ jsonpath
+-------------------------
+ "\b\f\r\n\t\u000b\"'\\"
+(1 row)
+
+select '"\x50\u0067\u{53}\u{051}\u{00004C}"'::jsonpath;
+ jsonpath
+----------
+ "PgSQL"
+(1 row)
+
+select '''\x50\u0067\u{53}\u{051}\u{00004C}'''::jsonpath;
+ jsonpath
+----------
+ "PgSQL"
+(1 row)
+
+select '$.foo\x50\u0067\u{53}\u{051}\u{00004C}\t\"bar'::jsonpath;
+ jsonpath
+---------------------
+ $."fooPgSQL\t\"bar"
+(1 row)
+
+select '$.g ? ($.a == 1)'::jsonpath;
+ jsonpath
+--------------------
+ $."g"?($."a" == 1)
+(1 row)
+
+select '$.g ? (@ == 1)'::jsonpath;
+ jsonpath
+----------------
+ $."g"?(@ == 1)
+(1 row)
+
+select '$.g ? (@.a == 1)'::jsonpath;
+ jsonpath
+--------------------
+ $."g"?(@."a" == 1)
+(1 row)
+
+select '$.g ? (@.a == 1 || @.a == 4)'::jsonpath;
+ jsonpath
+----------------------------------
+ $."g"?(@."a" == 1 || @."a" == 4)
+(1 row)
+
+select '$.g ? (@.a == 1 && @.a == 4)'::jsonpath;
+ jsonpath
+----------------------------------
+ $."g"?(@."a" == 1 && @."a" == 4)
+(1 row)
+
+select '$.g ? (@.a == 1 || @.a == 4 && @.b == 7)'::jsonpath;
+ jsonpath
+------------------------------------------------
+ $."g"?(@."a" == 1 || @."a" == 4 && @."b" == 7)
+(1 row)
+
+select '$.g ? (@.a == 1 || !(@.a == 4) && @.b == 7)'::jsonpath;
+ jsonpath
+---------------------------------------------------
+ $."g"?(@."a" == 1 || !(@."a" == 4) && @."b" == 7)
+(1 row)
+
+select '$.g ? (@.a == 1 || !(@.x >= 123 || @.a == 4) && @.b == 7)'::jsonpath;
+ jsonpath
+-------------------------------------------------------------------
+ $."g"?(@."a" == 1 || !(@."x" >= 123 || @."a" == 4) && @."b" == 7)
+(1 row)
+
+select '$.g ? (@.x >= @[*]?(@.a > "abc"))'::jsonpath;
+ jsonpath
+---------------------------------------
+ $."g"?(@."x" >= @[*]?(@."a" > "abc"))
+(1 row)
+
+select '$.g ? ((@.x >= 123 || @.a == 4) is unknown)'::jsonpath;
+ jsonpath
+-------------------------------------------------
+ $."g"?((@."x" >= 123 || @."a" == 4) is unknown)
+(1 row)
+
+select '$.g ? (exists (@.x))'::jsonpath;
+ jsonpath
+------------------------
+ $."g"?(exists (@."x"))
+(1 row)
+
+select '$.g ? (exists (@.x ? (@ == 14)))'::jsonpath;
+ jsonpath
+----------------------------------
+ $."g"?(exists (@."x"?(@ == 14)))
+(1 row)
+
+select '$.g ? ((@.x >= 123 || @.a == 4) && exists (@.x ? (@ == 14)))'::jsonpath;
+ jsonpath
+------------------------------------------------------------------
+ $."g"?((@."x" >= 123 || @."a" == 4) && exists (@."x"?(@ == 14)))
+(1 row)
+
+select '$.g ? (+@.x >= +-(+@.a + 2))'::jsonpath;
+ jsonpath
+------------------------------------
+ $."g"?(+@."x" >= +(-(+@."a" + 2)))
+(1 row)
+
+select '$a'::jsonpath;
+ jsonpath
+----------
+ $"a"
+(1 row)
+
+select '$a.b'::jsonpath;
+ jsonpath
+----------
+ $"a"."b"
+(1 row)
+
+select '$a[*]'::jsonpath;
+ jsonpath
+----------
+ $"a"[*]
+(1 row)
+
+select '$.g ? (@.zip == $zip)'::jsonpath;
+ jsonpath
+---------------------------
+ $."g"?(@."zip" == $"zip")
+(1 row)
+
+select '$.a[1,2, 3 to 16]'::jsonpath;
+ jsonpath
+--------------------
+ $."a"[1,2,3 to 16]
+(1 row)
+
+select '$.a[$a + 1, ($b[*]) to -($[0] * 2)]'::jsonpath;
+ jsonpath
+----------------------------------------
+ $."a"[$"a" + 1,$"b"[*] to -($[0] * 2)]
+(1 row)
+
+select '$.a[$.a.size() - 3]'::jsonpath;
+ jsonpath
+-------------------------
+ $."a"[$."a".size() - 3]
+(1 row)
+
+select 'last'::jsonpath;
+ERROR: LAST is allowed only in array subscripts
+LINE 1: select 'last'::jsonpath;
+ ^
+select '"last"'::jsonpath;
+ jsonpath
+----------
+ "last"
+(1 row)
+
+select '$.last'::jsonpath;
+ jsonpath
+----------
+ $."last"
+(1 row)
+
+select '$ ? (last > 0)'::jsonpath;
+ERROR: LAST is allowed only in array subscripts
+LINE 1: select '$ ? (last > 0)'::jsonpath;
+ ^
+select '$[last]'::jsonpath;
+ jsonpath
+----------
+ $[last]
+(1 row)
+
+select '$[$[0] ? (last > 0)]'::jsonpath;
+ jsonpath
+--------------------
+ $[$[0]?(last > 0)]
+(1 row)
+
+select 'null.type()'::jsonpath;
+ jsonpath
+-------------
+ null.type()
+(1 row)
+
+select '1.type()'::jsonpath;
+ jsonpath
+----------
+ 1.type()
+(1 row)
+
+select '"aaa".type()'::jsonpath;
+ jsonpath
+--------------
+ "aaa".type()
+(1 row)
+
+select 'true.type()'::jsonpath;
+ jsonpath
+-------------
+ true.type()
+(1 row)
+
+select '$.datetime()'::jsonpath;
+ jsonpath
+--------------
+ $.datetime()
+(1 row)
+
+select '$.datetime("datetime template")'::jsonpath;
+ jsonpath
+---------------------------------
+ $.datetime("datetime template")
+(1 row)
+
+select '$ ? (@ starts with "abc")'::jsonpath;
+ jsonpath
+-------------------------
+ $?(@ starts with "abc")
+(1 row)
+
+select '$ ? (@ starts with $var)'::jsonpath;
+ jsonpath
+--------------------------
+ $?(@ starts with $"var")
+(1 row)
+
+select '$ ? (@ like_regex "(invalid pattern")'::jsonpath;
+ERROR: invalid regular expression: parentheses () not balanced
+LINE 1: select '$ ? (@ like_regex "(invalid pattern")'::jsonpath;
+ ^
+select '$ ? (@ like_regex "pattern")'::jsonpath;
+ jsonpath
+----------------------------
+ $?(@ like_regex "pattern")
+(1 row)
+
+select '$ ? (@ like_regex "pattern" flag "")'::jsonpath;
+ jsonpath
+----------------------------
+ $?(@ like_regex "pattern")
+(1 row)
+
+select '$ ? (@ like_regex "pattern" flag "i")'::jsonpath;
+ jsonpath
+-------------------------------------
+ $?(@ like_regex "pattern" flag "i")
+(1 row)
+
+select '$ ? (@ like_regex "pattern" flag "is")'::jsonpath;
+ jsonpath
+--------------------------------------
+ $?(@ like_regex "pattern" flag "is")
+(1 row)
+
+select '$ ? (@ like_regex "pattern" flag "isim")'::jsonpath;
+ jsonpath
+--------------------------------------
+ $?(@ like_regex "pattern" flag "im")
+(1 row)
+
+select '$ ? (@ like_regex "pattern" flag "xsms")'::jsonpath;
+ jsonpath
+--------------------------------------
+ $?(@ like_regex "pattern" flag "sx")
+(1 row)
+
+select '$ ? (@ like_regex "pattern" flag "a")'::jsonpath;
+ERROR: bad jsonpath representation
+LINE 1: select '$ ? (@ like_regex "pattern" flag "a")'::jsonpath;
+ ^
+DETAIL: unrecognized flag of LIKE_REGEX predicate at or near """
+select '$ < 1'::jsonpath;
+ jsonpath
+----------
+ ($ < 1)
+(1 row)
+
+select '($ < 1) || $.a.b <= $x'::jsonpath;
+ jsonpath
+------------------------------
+ ($ < 1 || $."a"."b" <= $"x")
+(1 row)
+
+select '@ + 1'::jsonpath;
+ERROR: @ is not allowed in root expressions
+LINE 1: select '@ + 1'::jsonpath;
+ ^
+select '($).a.b'::jsonpath;
+ jsonpath
+-----------
+ $."a"."b"
+(1 row)
+
+select '($.a.b).c.d'::jsonpath;
+ jsonpath
+-------------------
+ $."a"."b"."c"."d"
+(1 row)
+
+select '($.a.b + -$.x.y).c.d'::jsonpath;
+ jsonpath
+----------------------------------
+ ($."a"."b" + -$."x"."y")."c"."d"
+(1 row)
+
+select '(-+$.a.b).c.d'::jsonpath;
+ jsonpath
+-------------------------
+ (-(+$."a"."b"))."c"."d"
+(1 row)
+
+select '1 + ($.a.b + 2).c.d'::jsonpath;
+ jsonpath
+-------------------------------
+ (1 + ($."a"."b" + 2)."c"."d")
+(1 row)
+
+select '1 + ($.a.b > 2).c.d'::jsonpath;
+ jsonpath
+-------------------------------
+ (1 + ($."a"."b" > 2)."c"."d")
+(1 row)
+
+select '($)'::jsonpath;
+ jsonpath
+----------
+ $
+(1 row)
+
+select '(($))'::jsonpath;
+ jsonpath
+----------
+ $
+(1 row)
+
+select '((($ + 1)).a + ((2)).b ? ((((@ > 1)) || (exists(@.c)))))'::jsonpath;
+ jsonpath
+-------------------------------------------------
+ (($ + 1)."a" + 2."b"?(@ > 1 || exists (@."c")))
+(1 row)
+
+select '$ ? (@.a < 1)'::jsonpath;
+ jsonpath
+---------------
+ $?(@."a" < 1)
+(1 row)
+
+select '$ ? (@.a < -1)'::jsonpath;
+ jsonpath
+----------------
+ $?(@."a" < -1)
+(1 row)
+
+select '$ ? (@.a < +1)'::jsonpath;
+ jsonpath
+---------------
+ $?(@."a" < 1)
+(1 row)
+
+select '$ ? (@.a < .1)'::jsonpath;
+ jsonpath
+-----------------
+ $?(@."a" < 0.1)
+(1 row)
+
+select '$ ? (@.a < -.1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < -0.1)
+(1 row)
+
+select '$ ? (@.a < +.1)'::jsonpath;
+ jsonpath
+-----------------
+ $?(@."a" < 0.1)
+(1 row)
+
+select '$ ? (@.a < 0.1)'::jsonpath;
+ jsonpath
+-----------------
+ $?(@."a" < 0.1)
+(1 row)
+
+select '$ ? (@.a < -0.1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < -0.1)
+(1 row)
+
+select '$ ? (@.a < +0.1)'::jsonpath;
+ jsonpath
+-----------------
+ $?(@."a" < 0.1)
+(1 row)
+
+select '$ ? (@.a < 10.1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < 10.1)
+(1 row)
+
+select '$ ? (@.a < -10.1)'::jsonpath;
+ jsonpath
+-------------------
+ $?(@."a" < -10.1)
+(1 row)
+
+select '$ ? (@.a < +10.1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < 10.1)
+(1 row)
+
+select '$ ? (@.a < 1e1)'::jsonpath;
+ jsonpath
+----------------
+ $?(@."a" < 10)
+(1 row)
+
+select '$ ? (@.a < -1e1)'::jsonpath;
+ jsonpath
+-----------------
+ $?(@."a" < -10)
+(1 row)
+
+select '$ ? (@.a < +1e1)'::jsonpath;
+ jsonpath
+----------------
+ $?(@."a" < 10)
+(1 row)
+
+select '$ ? (@.a < .1e1)'::jsonpath;
+ jsonpath
+---------------
+ $?(@."a" < 1)
+(1 row)
+
+select '$ ? (@.a < -.1e1)'::jsonpath;
+ jsonpath
+----------------
+ $?(@."a" < -1)
+(1 row)
+
+select '$ ? (@.a < +.1e1)'::jsonpath;
+ jsonpath
+---------------
+ $?(@."a" < 1)
+(1 row)
+
+select '$ ? (@.a < 0.1e1)'::jsonpath;
+ jsonpath
+---------------
+ $?(@."a" < 1)
+(1 row)
+
+select '$ ? (@.a < -0.1e1)'::jsonpath;
+ jsonpath
+----------------
+ $?(@."a" < -1)
+(1 row)
+
+select '$ ? (@.a < +0.1e1)'::jsonpath;
+ jsonpath
+---------------
+ $?(@."a" < 1)
+(1 row)
+
+select '$ ? (@.a < 10.1e1)'::jsonpath;
+ jsonpath
+-----------------
+ $?(@."a" < 101)
+(1 row)
+
+select '$ ? (@.a < -10.1e1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < -101)
+(1 row)
+
+select '$ ? (@.a < +10.1e1)'::jsonpath;
+ jsonpath
+-----------------
+ $?(@."a" < 101)
+(1 row)
+
+select '$ ? (@.a < 1e-1)'::jsonpath;
+ jsonpath
+-----------------
+ $?(@."a" < 0.1)
+(1 row)
+
+select '$ ? (@.a < -1e-1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < -0.1)
+(1 row)
+
+select '$ ? (@.a < +1e-1)'::jsonpath;
+ jsonpath
+-----------------
+ $?(@."a" < 0.1)
+(1 row)
+
+select '$ ? (@.a < .1e-1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < 0.01)
+(1 row)
+
+select '$ ? (@.a < -.1e-1)'::jsonpath;
+ jsonpath
+-------------------
+ $?(@."a" < -0.01)
+(1 row)
+
+select '$ ? (@.a < +.1e-1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < 0.01)
+(1 row)
+
+select '$ ? (@.a < 0.1e-1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < 0.01)
+(1 row)
+
+select '$ ? (@.a < -0.1e-1)'::jsonpath;
+ jsonpath
+-------------------
+ $?(@."a" < -0.01)
+(1 row)
+
+select '$ ? (@.a < +0.1e-1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < 0.01)
+(1 row)
+
+select '$ ? (@.a < 10.1e-1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < 1.01)
+(1 row)
+
+select '$ ? (@.a < -10.1e-1)'::jsonpath;
+ jsonpath
+-------------------
+ $?(@."a" < -1.01)
+(1 row)
+
+select '$ ? (@.a < +10.1e-1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < 1.01)
+(1 row)
+
+select '$ ? (@.a < 1e+1)'::jsonpath;
+ jsonpath
+----------------
+ $?(@."a" < 10)
+(1 row)
+
+select '$ ? (@.a < -1e+1)'::jsonpath;
+ jsonpath
+-----------------
+ $?(@."a" < -10)
+(1 row)
+
+select '$ ? (@.a < +1e+1)'::jsonpath;
+ jsonpath
+----------------
+ $?(@."a" < 10)
+(1 row)
+
+select '$ ? (@.a < .1e+1)'::jsonpath;
+ jsonpath
+---------------
+ $?(@."a" < 1)
+(1 row)
+
+select '$ ? (@.a < -.1e+1)'::jsonpath;
+ jsonpath
+----------------
+ $?(@."a" < -1)
+(1 row)
+
+select '$ ? (@.a < +.1e+1)'::jsonpath;
+ jsonpath
+---------------
+ $?(@."a" < 1)
+(1 row)
+
+select '$ ? (@.a < 0.1e+1)'::jsonpath;
+ jsonpath
+---------------
+ $?(@."a" < 1)
+(1 row)
+
+select '$ ? (@.a < -0.1e+1)'::jsonpath;
+ jsonpath
+----------------
+ $?(@."a" < -1)
+(1 row)
+
+select '$ ? (@.a < +0.1e+1)'::jsonpath;
+ jsonpath
+---------------
+ $?(@."a" < 1)
+(1 row)
+
+select '$ ? (@.a < 10.1e+1)'::jsonpath;
+ jsonpath
+-----------------
+ $?(@."a" < 101)
+(1 row)
+
+select '$ ? (@.a < -10.1e+1)'::jsonpath;
+ jsonpath
+------------------
+ $?(@."a" < -101)
+(1 row)
+
+select '$ ? (@.a < +10.1e+1)'::jsonpath;
+ jsonpath
+-----------------
+ $?(@."a" < 101)
+(1 row)
+
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index cc0bbf5..42e0c23 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -104,7 +104,12 @@ test: publication subscription
# ----------
# Another group of parallel tests
# ----------
-test: select_views portals_p2 foreign_key cluster dependency guc bitmapops combocid tsearch tsdicts foreign_data window xmlmap functional_deps advisory_lock json jsonb json_encoding indirect_toast equivclass
+test: select_views portals_p2 foreign_key cluster dependency guc bitmapops combocid tsearch tsdicts foreign_data window xmlmap functional_deps advisory_lock indirect_toast equivclass
+
+# ----------
+# Another group of parallel tests (JSON related)
+# ----------
+test: json jsonb json_encoding jsonpath jsonb_jsonpath
# ----------
# Another group of parallel tests
diff --git a/src/test/regress/serial_schedule b/src/test/regress/serial_schedule
index 0c10c71..46433c8 100644
--- a/src/test/regress/serial_schedule
+++ b/src/test/regress/serial_schedule
@@ -156,6 +156,8 @@ test: advisory_lock
test: json
test: jsonb
test: json_encoding
+test: jsonpath
+test: jsonb_jsonpath
test: indirect_toast
test: equivclass
test: plancache
diff --git a/src/test/regress/sql/jsonb_jsonpath.sql b/src/test/regress/sql/jsonb_jsonpath.sql
new file mode 100644
index 0000000..c50fd13
--- /dev/null
+++ b/src/test/regress/sql/jsonb_jsonpath.sql
@@ -0,0 +1,395 @@
+select jsonb '{"a": 12}' @? '$.a.b';
+select jsonb '{"a": 12}' @? '$.b';
+select jsonb '{"a": {"a": 12}}' @? '$.a.a';
+select jsonb '{"a": {"a": 12}}' @? '$.*.a';
+select jsonb '{"b": {"a": 12}}' @? '$.*.a';
+select jsonb '{}' @? '$.*';
+select jsonb '{"a": 1}' @? '$.*';
+select jsonb '{"a": {"b": 1}}' @? 'lax $.**{1}';
+select jsonb '{"a": {"b": 1}}' @? 'lax $.**{2}';
+select jsonb '{"a": {"b": 1}}' @? 'lax $.**{3}';
+select jsonb '[]' @? '$[*]';
+select jsonb '[1]' @? '$[*]';
+select jsonb '[1]' @? '$[1]';
+select jsonb '[1]' @? 'strict $[1]';
+select jsonb_path_query('[1]', 'strict $[1]');
+select jsonb '[1]' @? '$[0]';
+select jsonb '[1]' @? '$[0.3]';
+select jsonb '[1]' @? '$[0.5]';
+select jsonb '[1]' @? '$[0.9]';
+select jsonb '[1]' @? '$[1.2]';
+select jsonb '[1]' @? 'strict $[1.2]';
+select jsonb '{"a": [1,2,3], "b": [3,4,5]}' @? '$ ? (@.a[*] > @.b[*])';
+select jsonb '{"a": [1,2,3], "b": [3,4,5]}' @? '$ ? (@.a[*] >= @.b[*])';
+select jsonb '{"a": [1,2,3], "b": [3,4,"5"]}' @? '$ ? (@.a[*] >= @.b[*])';
+select jsonb '{"a": [1,2,3], "b": [3,4,"5"]}' @? 'strict $ ? (@.a[*] >= @.b[*])';
+select jsonb '{"a": [1,2,3], "b": [3,4,null]}' @? '$ ? (@.a[*] >= @.b[*])';
+select jsonb '1' @? '$ ? ((@ == "1") is unknown)';
+select jsonb '1' @? '$ ? ((@ == 1) is unknown)';
+select jsonb '[{"a": 1}, {"a": 2}]' @? '$[0 to 1] ? (@.a > 1)';
+
+select jsonb_path_query('{"a": 12, "b": {"a": 13}}', '$.a');
+select jsonb_path_query('{"a": 12, "b": {"a": 13}}', '$.b');
+select jsonb_path_query('{"a": 12, "b": {"a": 13}}', '$.*');
+select jsonb_path_query('{"a": 12, "b": {"a": 13}}', 'lax $.*.a');
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[*].a');
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[*].*');
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[0].a');
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[1].a');
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[2].a');
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[0,1].a');
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}]', 'lax $[0 to 10].a');
+select jsonb_path_query('[12, {"a": 13}, {"b": 14}, "ccc", true]', '$[2.5 - 1 to $.size() - 2]');
+select jsonb_path_query('1', 'lax $[0]');
+select jsonb_path_query('1', 'lax $[*]');
+select jsonb_path_query('[1]', 'lax $[0]');
+select jsonb_path_query('[1]', 'lax $[*]');
+select jsonb_path_query('[1,2,3]', 'lax $[*]');
+select jsonb_path_query('[]', '$[last]');
+select jsonb_path_query('[]', 'strict $[last]');
+select jsonb_path_query('[1]', '$[last]');
+select jsonb_path_query('[1,2,3]', '$[last]');
+select jsonb_path_query('[1,2,3]', '$[last - 1]');
+select jsonb_path_query('[1,2,3]', '$[last ? (@.type() == "number")]');
+select jsonb_path_query('[1,2,3]', '$[last ? (@.type() == "string")]');
+
+select * from jsonb_path_query('{"a": 10}', '$');
+select * from jsonb_path_query('{"a": 10}', '$ ? (@.a < $value)');
+select * from jsonb_path_query('{"a": 10}', '$ ? (@.a < $value)', '{"value" : 13}');
+select * from jsonb_path_query('{"a": 10}', '$ ? (@.a < $value)', '{"value" : 8}');
+select * from jsonb_path_query('{"a": 10}', '$.a ? (@ < $value)', '{"value" : 13}');
+select * from jsonb_path_query('[10,11,12,13,14,15]', '$[*] ? (@ < $value)', '{"value" : 13}');
+select * from jsonb_path_query('[10,11,12,13,14,15]', '$[0,1] ? (@ < $value)', '{"value" : 13}');
+select * from jsonb_path_query('[10,11,12,13,14,15]', '$[0 to 2] ? (@ < $value)', '{"value" : 15}');
+select * from jsonb_path_query('[1,"1",2,"2",null]', '$[*] ? (@ == "1")');
+select * from jsonb_path_query('[1,"1",2,"2",null]', '$[*] ? (@ == $value)', '{"value" : "1"}');
+select * from jsonb_path_query('[1, "2", null]', '$[*] ? (@ != null)');
+select * from jsonb_path_query('[1, "2", null]', '$[*] ? (@ == null)');
+
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{0}');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{0 to last}');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{1}');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{1 to last}');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{2}');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{2 to last}');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{3 to last}');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**.b ? (@ > 0)');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{0}.b ? (@ > 0)');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{1}.b ? (@ > 0)');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{0 to last}.b ? (@ > 0)');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{1 to last}.b ? (@ > 0)');
+select jsonb_path_query('{"a": {"b": 1}}', 'lax $.**{1 to 2}.b ? (@ > 0)');
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**.b ? (@ > 0)');
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**{0}.b ? (@ > 0)');
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**{1}.b ? (@ > 0)');
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**{0 to last}.b ? (@ > 0)');
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**{1 to last}.b ? (@ > 0)');
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**{1 to 2}.b ? (@ > 0)');
+select jsonb_path_query('{"a": {"c": {"b": 1}}}', 'lax $.**{2 to 3}.b ? (@ > 0)');
+
+select jsonb '{"a": {"b": 1}}' @? '$.**.b ? ( @ > 0)';
+select jsonb '{"a": {"b": 1}}' @? '$.**{0}.b ? ( @ > 0)';
+select jsonb '{"a": {"b": 1}}' @? '$.**{1}.b ? ( @ > 0)';
+select jsonb '{"a": {"b": 1}}' @? '$.**{0 to last}.b ? ( @ > 0)';
+select jsonb '{"a": {"b": 1}}' @? '$.**{1 to last}.b ? ( @ > 0)';
+select jsonb '{"a": {"b": 1}}' @? '$.**{1 to 2}.b ? ( @ > 0)';
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**.b ? ( @ > 0)';
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**{0}.b ? ( @ > 0)';
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**{1}.b ? ( @ > 0)';
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**{0 to last}.b ? ( @ > 0)';
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**{1 to last}.b ? ( @ > 0)';
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**{1 to 2}.b ? ( @ > 0)';
+select jsonb '{"a": {"c": {"b": 1}}}' @? '$.**{2 to 3}.b ? ( @ > 0)';
+
+select jsonb_path_query('{"g": {"x": 2}}', '$.g ? (exists (@.x))');
+select jsonb_path_query('{"g": {"x": 2}}', '$.g ? (exists (@.y))');
+select jsonb_path_query('{"g": {"x": 2}}', '$.g ? (exists (@.x ? (@ >= 2) ))');
+
+--test ternary logic
+select
+ x, y,
+ jsonb_path_query(
+ '[true, false, null]',
+ '$[*] ? (@ == true && ($x == true && $y == true) ||
+ @ == false && !($x == true && $y == true) ||
+ @ == null && ($x == true && $y == true) is unknown)',
+ jsonb_build_object('x', x, 'y', y)
+ ) as "x && y"
+from
+ (values (jsonb 'true'), ('false'), ('"null"')) x(x),
+ (values (jsonb 'true'), ('false'), ('"null"')) y(y);
+
+select
+ x, y,
+ jsonb_path_query(
+ '[true, false, null]',
+ '$[*] ? (@ == true && ($x == true || $y == true) ||
+ @ == false && !($x == true || $y == true) ||
+ @ == null && ($x == true || $y == true) is unknown)',
+ jsonb_build_object('x', x, 'y', y)
+ ) as "x || y"
+from
+ (values (jsonb 'true'), ('false'), ('"null"')) x(x),
+ (values (jsonb 'true'), ('false'), ('"null"')) y(y);
+
+select jsonb '{"a": 1, "b":1}' @? '$ ? (@.a == @.b)';
+select jsonb '{"c": {"a": 1, "b":1}}' @? '$ ? (@.a == @.b)';
+select jsonb '{"c": {"a": 1, "b":1}}' @? '$.c ? (@.a == @.b)';
+select jsonb '{"c": {"a": 1, "b":1}}' @? '$.c ? ($.c.a == @.b)';
+select jsonb '{"c": {"a": 1, "b":1}}' @? '$.* ? (@.a == @.b)';
+select jsonb '{"a": 1, "b":1}' @? '$.** ? (@.a == @.b)';
+select jsonb '{"c": {"a": 1, "b":1}}' @? '$.** ? (@.a == @.b)';
+
+select jsonb_path_query('{"c": {"a": 2, "b":1}}', '$.** ? (@.a == 1 + 1)');
+select jsonb_path_query('{"c": {"a": 2, "b":1}}', '$.** ? (@.a == (1 + 1))');
+select jsonb_path_query('{"c": {"a": 2, "b":1}}', '$.** ? (@.a == @.b + 1)');
+select jsonb_path_query('{"c": {"a": 2, "b":1}}', '$.** ? (@.a == (@.b + 1))');
+select jsonb '{"c": {"a": -1, "b":1}}' @? '$.** ? (@.a == - 1)';
+select jsonb '{"c": {"a": -1, "b":1}}' @? '$.** ? (@.a == -1)';
+select jsonb '{"c": {"a": -1, "b":1}}' @? '$.** ? (@.a == -@.b)';
+select jsonb '{"c": {"a": -1, "b":1}}' @? '$.** ? (@.a == - @.b)';
+select jsonb '{"c": {"a": 0, "b":1}}' @? '$.** ? (@.a == 1 - @.b)';
+select jsonb '{"c": {"a": 2, "b":1}}' @? '$.** ? (@.a == 1 - - @.b)';
+select jsonb '{"c": {"a": 0, "b":1}}' @? '$.** ? (@.a == 1 - +@.b)';
+select jsonb '[1,2,3]' @? '$ ? (+@[*] > +2)';
+select jsonb '[1,2,3]' @? '$ ? (+@[*] > +3)';
+select jsonb '[1,2,3]' @? '$ ? (-@[*] < -2)';
+select jsonb '[1,2,3]' @? '$ ? (-@[*] < -3)';
+select jsonb '1' @? '$ ? ($ > 0)';
+
+-- arithmetic errors
+select jsonb_path_query('[1,2,0,3]', '$[*] ? (2 / @ > 0)');
+select jsonb_path_query('[1,2,0,3]', '$[*] ? ((2 / @ > 0) is unknown)');
+select jsonb_path_query('0', '1 / $');
+
+-- unwrapping of operator arguments in lax mode
+select jsonb_path_query('{"a": [2]}', 'lax $.a * 3');
+select jsonb_path_query('{"a": [2]}', 'lax $.a + 3');
+select jsonb_path_query('{"a": [2, 3, 4]}', 'lax -$.a');
+-- should fail
+select jsonb_path_query('{"a": [1, 2]}', 'lax $.a * 3');
+
+-- extension: boolean expressions
+select jsonb_path_query('2', '$ > 1');
+select jsonb_path_query('2', '$ <= 1');
+select jsonb_path_query('2', '$ == "2"');
+
+select jsonb '2' @@ '$ > 1';
+select jsonb '2' @@ '$ <= 1';
+select jsonb '2' @@ '$ == "2"';
+select jsonb '2' @@ '1';
+select jsonb '{}' @@ '$';
+select jsonb '[]' @@ '$';
+select jsonb '[1,2,3]' @@ '$[*]';
+select jsonb '[]' @@ '$[*]';
+select jsonb_path_match('[[1, true], [2, false]]', 'strict $[*] ? (@[0] > $x) [1]', '{"x": 1}');
+select jsonb_path_match('[[1, true], [2, false]]', 'strict $[*] ? (@[0] < $x) [1]', '{"x": 2}');
+
+select jsonb_path_query('[null,1,true,"a",[],{}]', '$.type()');
+select jsonb_path_query('[null,1,true,"a",[],{}]', 'lax $.type()');
+select jsonb_path_query('[null,1,true,"a",[],{}]', '$[*].type()');
+select jsonb_path_query('null', 'null.type()');
+select jsonb_path_query('null', 'true.type()');
+select jsonb_path_query('null', '123.type()');
+select jsonb_path_query('null', '"123".type()');
+
+select jsonb_path_query('{"a": 2}', '($.a - 5).abs() + 10');
+select jsonb_path_query('{"a": 2.5}', '-($.a * $.a).floor() + 10');
+select jsonb_path_query('[1, 2, 3]', '($[*] > 2) ? (@ == true)');
+select jsonb_path_query('[1, 2, 3]', '($[*] > 3).type()');
+select jsonb_path_query('[1, 2, 3]', '($[*].a > 3).type()');
+select jsonb_path_query('[1, 2, 3]', 'strict ($[*].a > 3).type()');
+
+select jsonb_path_query('[1,null,true,"11",[],[1],[1,2,3],{},{"a":1,"b":2}]', 'strict $[*].size()');
+select jsonb_path_query('[1,null,true,"11",[],[1],[1,2,3],{},{"a":1,"b":2}]', 'lax $[*].size()');
+
+select jsonb_path_query('[0, 1, -2, -3.4, 5.6]', '$[*].abs()');
+select jsonb_path_query('[0, 1, -2, -3.4, 5.6]', '$[*].floor()');
+select jsonb_path_query('[0, 1, -2, -3.4, 5.6]', '$[*].ceiling()');
+select jsonb_path_query('[0, 1, -2, -3.4, 5.6]', '$[*].ceiling().abs()');
+select jsonb_path_query('[0, 1, -2, -3.4, 5.6]', '$[*].ceiling().abs().type()');
+
+select jsonb_path_query('[{},1]', '$[*].keyvalue()');
+select jsonb_path_query('{}', '$.keyvalue()');
+select jsonb_path_query('{"a": 1, "b": [1, 2], "c": {"a": "bbb"}}', '$.keyvalue()');
+select jsonb_path_query('[{"a": 1, "b": [1, 2]}, {"c": {"a": "bbb"}}]', '$[*].keyvalue()');
+select jsonb_path_query('[{"a": 1, "b": [1, 2]}, {"c": {"a": "bbb"}}]', 'strict $.keyvalue()');
+select jsonb_path_query('[{"a": 1, "b": [1, 2]}, {"c": {"a": "bbb"}}]', 'lax $.keyvalue()');
+
+select jsonb_path_query('null', '$.double()');
+select jsonb_path_query('true', '$.double()');
+select jsonb_path_query('[]', '$.double()');
+select jsonb_path_query('[]', 'strict $.double()');
+select jsonb_path_query('{}', '$.double()');
+select jsonb_path_query('1.23', '$.double()');
+select jsonb_path_query('"1.23"', '$.double()');
+select jsonb_path_query('"1.23aaa"', '$.double()');
+
+select jsonb_path_query('["", "a", "abc", "abcabc"]', '$[*] ? (@ starts with "abc")');
+select jsonb_path_query('["", "a", "abc", "abcabc"]', 'strict $ ? (@[*] starts with "abc")');
+select jsonb_path_query('["", "a", "abd", "abdabc"]', 'strict $ ? (@[*] starts with "abc")');
+select jsonb_path_query('["abc", "abcabc", null, 1]', 'strict $ ? (@[*] starts with "abc")');
+select jsonb_path_query('["abc", "abcabc", null, 1]', 'strict $ ? ((@[*] starts with "abc") is unknown)');
+select jsonb_path_query('[[null, 1, "abc", "abcabc"]]', 'lax $ ? (@[*] starts with "abc")');
+select jsonb_path_query('[[null, 1, "abd", "abdabc"]]', 'lax $ ? ((@[*] starts with "abc") is unknown)');
+select jsonb_path_query('[null, 1, "abd", "abdabc"]', 'lax $[*] ? ((@ starts with "abc") is unknown)');
+
+select jsonb_path_query('[null, 1, "abc", "abd", "aBdC", "abdacb", "babc"]', 'lax $[*] ? (@ like_regex "^ab.*c")');
+select jsonb_path_query('[null, 1, "abc", "abd", "aBdC", "abdacb", "babc"]', 'lax $[*] ? (@ like_regex "^ab.*c" flag "i")');
+
+select jsonb_path_query('null', '$.datetime()');
+select jsonb_path_query('true', '$.datetime()');
+select jsonb_path_query('1', '$.datetime()');
+select jsonb_path_query('[]', '$.datetime()');
+select jsonb_path_query('[]', 'strict $.datetime()');
+select jsonb_path_query('{}', '$.datetime()');
+select jsonb_path_query('""', '$.datetime()');
+
+select jsonb_path_query('"10-03-2017"', '$.datetime("dd-mm-yyyy")');
+select jsonb_path_query('"10-03-2017"', '$.datetime("dd-mm-yyyy").type()');
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy")');
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy").type()');
+
+select jsonb_path_query('"10-03-2017 12:34"', ' $.datetime("dd-mm-yyyy HH24:MI").type()');
+select jsonb_path_query('"10-03-2017 12:34 +05:20"', '$.datetime("dd-mm-yyyy HH24:MI TZH:TZM").type()');
+select jsonb_path_query('"12:34:56"', '$.datetime("HH24:MI:SS").type()');
+select jsonb_path_query('"12:34:56 +05:20"', '$.datetime("HH24:MI:SS TZH:TZM").type()');
+
+set time zone '+00';
+
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI")');
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH")');
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH", "+00")');
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH", "+00:12")');
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH", "-00:12:34")');
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH", "UTC")');
+select jsonb_path_query('"10-03-2017 12:34 +05"', '$.datetime("dd-mm-yyyy HH24:MI TZH")');
+select jsonb_path_query('"10-03-2017 12:34 -05"', '$.datetime("dd-mm-yyyy HH24:MI TZH")');
+select jsonb_path_query('"10-03-2017 12:34 +05:20"', '$.datetime("dd-mm-yyyy HH24:MI TZH:TZM")');
+select jsonb_path_query('"10-03-2017 12:34 -05:20"', '$.datetime("dd-mm-yyyy HH24:MI TZH:TZM")');
+select jsonb_path_query('"12:34"', '$.datetime("HH24:MI")');
+select jsonb_path_query('"12:34"', '$.datetime("HH24:MI TZH")');
+select jsonb_path_query('"12:34"', '$.datetime("HH24:MI TZH", "+00")');
+select jsonb_path_query('"12:34 +05"', '$.datetime("HH24:MI TZH")');
+select jsonb_path_query('"12:34 -05"', '$.datetime("HH24:MI TZH")');
+select jsonb_path_query('"12:34 +05:20"', '$.datetime("HH24:MI TZH:TZM")');
+select jsonb_path_query('"12:34 -05:20"', '$.datetime("HH24:MI TZH:TZM")');
+
+set time zone '+10';
+
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI")');
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH")');
+select jsonb_path_query('"10-03-2017 12:34"', '$.datetime("dd-mm-yyyy HH24:MI TZH", "+10")');
+select jsonb_path_query('"10-03-2017 12:34 +05"', '$.datetime("dd-mm-yyyy HH24:MI TZH")');
+select jsonb_path_query('"10-03-2017 12:34 -05"', '$.datetime("dd-mm-yyyy HH24:MI TZH")');
+select jsonb_path_query('"10-03-2017 12:34 +05:20"', '$.datetime("dd-mm-yyyy HH24:MI TZH:TZM")');
+select jsonb_path_query('"10-03-2017 12:34 -05:20"', '$.datetime("dd-mm-yyyy HH24:MI TZH:TZM")');
+select jsonb_path_query('"12:34"', '$.datetime("HH24:MI")');
+select jsonb_path_query('"12:34"', '$.datetime("HH24:MI TZH")');
+select jsonb_path_query('"12:34"', '$.datetime("HH24:MI TZH", "+10")');
+select jsonb_path_query('"12:34 +05"', '$.datetime("HH24:MI TZH")');
+select jsonb_path_query('"12:34 -05"', '$.datetime("HH24:MI TZH")');
+select jsonb_path_query('"12:34 +05:20"', '$.datetime("HH24:MI TZH:TZM")');
+select jsonb_path_query('"12:34 -05:20"', '$.datetime("HH24:MI TZH:TZM")');
+
+set time zone default;
+
+select jsonb_path_query('"2017-03-10"', '$.datetime().type()');
+select jsonb_path_query('"2017-03-10"', '$.datetime()');
+select jsonb_path_query('"2017-03-10 12:34:56"', '$.datetime().type()');
+select jsonb_path_query('"2017-03-10 12:34:56"', '$.datetime()');
+select jsonb_path_query('"2017-03-10 12:34:56 +3"', '$.datetime().type()');
+select jsonb_path_query('"2017-03-10 12:34:56 +3"', '$.datetime()');
+select jsonb_path_query('"2017-03-10 12:34:56 +3:10"', '$.datetime().type()');
+select jsonb_path_query('"2017-03-10 12:34:56 +3:10"', '$.datetime()');
+select jsonb_path_query('"12:34:56"', '$.datetime().type()');
+select jsonb_path_query('"12:34:56"', '$.datetime()');
+select jsonb_path_query('"12:34:56 +3"', '$.datetime().type()');
+select jsonb_path_query('"12:34:56 +3"', '$.datetime()');
+select jsonb_path_query('"12:34:56 +3:10"', '$.datetime().type()');
+select jsonb_path_query('"12:34:56 +3:10"', '$.datetime()');
+
+set time zone '+00';
+
+-- date comparison
+select jsonb_path_query(
+ '["2017-03-10", "2017-03-11", "2017-03-09", "12:34:56", "01:02:03 +04", "2017-03-10 00:00:00", "2017-03-10 12:34:56", "2017-03-10 01:02:03 +04", "2017-03-10 03:00:00 +03"]',
+ '$[*].datetime() ? (@ == "10.03.2017".datetime("dd.mm.yyyy"))');
+select jsonb_path_query(
+ '["2017-03-10", "2017-03-11", "2017-03-09", "12:34:56", "01:02:03 +04", "2017-03-10 00:00:00", "2017-03-10 12:34:56", "2017-03-10 01:02:03 +04", "2017-03-10 03:00:00 +03"]',
+ '$[*].datetime() ? (@ >= "10.03.2017".datetime("dd.mm.yyyy"))');
+select jsonb_path_query(
+ '["2017-03-10", "2017-03-11", "2017-03-09", "12:34:56", "01:02:03 +04", "2017-03-10 00:00:00", "2017-03-10 12:34:56", "2017-03-10 01:02:03 +04", "2017-03-10 03:00:00 +03"]',
+ '$[*].datetime() ? (@ < "10.03.2017".datetime("dd.mm.yyyy"))');
+
+-- time comparison
+select jsonb_path_query(
+ '["12:34:00", "12:35:00", "12:36:00", "12:35:00 +00", "12:35:00 +01", "13:35:00 +01", "2017-03-10", "2017-03-10 12:35:00", "2017-03-10 12:35:00 +01"]',
+ '$[*].datetime() ? (@ == "12:35".datetime("HH24:MI"))');
+select jsonb_path_query(
+ '["12:34:00", "12:35:00", "12:36:00", "12:35:00 +00", "12:35:00 +01", "13:35:00 +01", "2017-03-10", "2017-03-10 12:35:00", "2017-03-10 12:35:00 +01"]',
+ '$[*].datetime() ? (@ >= "12:35".datetime("HH24:MI"))');
+select jsonb_path_query(
+ '["12:34:00", "12:35:00", "12:36:00", "12:35:00 +00", "12:35:00 +01", "13:35:00 +01", "2017-03-10", "2017-03-10 12:35:00", "2017-03-10 12:35:00 +01"]',
+ '$[*].datetime() ? (@ < "12:35".datetime("HH24:MI"))');
+
+-- timetz comparison
+select jsonb_path_query(
+ '["12:34:00 +01", "12:35:00 +01", "12:36:00 +01", "12:35:00 +02", "12:35:00 -02", "10:35:00", "11:35:00", "12:35:00", "2017-03-10", "2017-03-10 12:35:00", "2017-03-10 12:35:00 +1"]',
+ '$[*].datetime() ? (@ == "12:35 +1".datetime("HH24:MI TZH"))');
+select jsonb_path_query(
+ '["12:34:00 +01", "12:35:00 +01", "12:36:00 +01", "12:35:00 +02", "12:35:00 -02", "10:35:00", "11:35:00", "12:35:00", "2017-03-10", "2017-03-10 12:35:00", "2017-03-10 12:35:00 +1"]',
+ '$[*].datetime() ? (@ >= "12:35 +1".datetime("HH24:MI TZH"))');
+select jsonb_path_query(
+ '["12:34:00 +01", "12:35:00 +01", "12:36:00 +01", "12:35:00 +02", "12:35:00 -02", "10:35:00", "11:35:00", "12:35:00", "2017-03-10", "2017-03-10 12:35:00", "2017-03-10 12:35:00 +1"]',
+ '$[*].datetime() ? (@ < "12:35 +1".datetime("HH24:MI TZH"))');
+
+-- timestamp comparison
+select jsonb_path_query(
+ '["2017-03-10 12:34:00", "2017-03-10 12:35:00", "2017-03-10 12:36:00", "2017-03-10 12:35:00 +01", "2017-03-10 13:35:00 +01", "2017-03-10 12:35:00 -01", "2017-03-10", "2017-03-11", "12:34:56", "12:34:56 +01"]',
+ '$[*].datetime() ? (@ == "10.03.2017 12:35".datetime("dd.mm.yyyy HH24:MI"))');
+select jsonb_path_query(
+ '["2017-03-10 12:34:00", "2017-03-10 12:35:00", "2017-03-10 12:36:00", "2017-03-10 12:35:00 +01", "2017-03-10 13:35:00 +01", "2017-03-10 12:35:00 -01", "2017-03-10", "2017-03-11", "12:34:56", "12:34:56 +01"]',
+ '$[*].datetime() ? (@ >= "10.03.2017 12:35".datetime("dd.mm.yyyy HH24:MI"))');
+select jsonb_path_query(
+ '["2017-03-10 12:34:00", "2017-03-10 12:35:00", "2017-03-10 12:36:00", "2017-03-10 12:35:00 +01", "2017-03-10 13:35:00 +01", "2017-03-10 12:35:00 -01", "2017-03-10", "2017-03-11", "12:34:56", "12:34:56 +01"]',
+ '$[*].datetime() ? (@ < "10.03.2017 12:35".datetime("dd.mm.yyyy HH24:MI"))');
+
+-- timestamptz comparison
+select jsonb_path_query(
+ '["2017-03-10 12:34:00 +01", "2017-03-10 12:35:00 +01", "2017-03-10 12:36:00 +01", "2017-03-10 12:35:00 +02", "2017-03-10 12:35:00 -02", "2017-03-10 10:35:00", "2017-03-10 11:35:00", "2017-03-10 12:35:00", "2017-03-10", "2017-03-11", "12:34:56", "12:34:56 +01"]',
+ '$[*].datetime() ? (@ == "10.03.2017 12:35 +1".datetime("dd.mm.yyyy HH24:MI TZH"))');
+select jsonb_path_query(
+ '["2017-03-10 12:34:00 +01", "2017-03-10 12:35:00 +01", "2017-03-10 12:36:00 +01", "2017-03-10 12:35:00 +02", "2017-03-10 12:35:00 -02", "2017-03-10 10:35:00", "2017-03-10 11:35:00", "2017-03-10 12:35:00", "2017-03-10", "2017-03-11", "12:34:56", "12:34:56 +01"]',
+ '$[*].datetime() ? (@ >= "10.03.2017 12:35 +1".datetime("dd.mm.yyyy HH24:MI TZH"))');
+select jsonb_path_query(
+ '["2017-03-10 12:34:00 +01", "2017-03-10 12:35:00 +01", "2017-03-10 12:36:00 +01", "2017-03-10 12:35:00 +02", "2017-03-10 12:35:00 -02", "2017-03-10 10:35:00", "2017-03-10 11:35:00", "2017-03-10 12:35:00", "2017-03-10", "2017-03-11", "12:34:56", "12:34:56 +01"]',
+ '$[*].datetime() ? (@ < "10.03.2017 12:35 +1".datetime("dd.mm.yyyy HH24:MI TZH"))');
+
+set time zone default;
+
+-- jsonpath operators
+
+SELECT jsonb_path_query('[{"a": 1}, {"a": 2}]', '$[*]');
+SELECT jsonb_path_query('[{"a": 1}, {"a": 2}]', '$[*] ? (@.a > 10)');
+
+SELECT jsonb_path_query_array('[{"a": 1}, {"a": 2}]', '$[*].a');
+SELECT jsonb_path_query_array('[{"a": 1}, {"a": 2}]', '$[*].a ? (@ == 1)');
+SELECT jsonb_path_query_array('[{"a": 1}, {"a": 2}]', '$[*].a ? (@ > 10)');
+SELECT jsonb_path_query_array('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*].a ? (@ > $min && @ < $max)', '{"min": 1, "max": 4}');
+SELECT jsonb_path_query_array('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*].a ? (@ > $min && @ < $max)', '{"min": 3, "max": 4}');
+
+SELECT jsonb_path_query_first('[{"a": 1}, {"a": 2}]', '$[*].a');
+SELECT jsonb_path_query_first('[{"a": 1}, {"a": 2}]', '$[*].a ? (@ == 1)');
+SELECT jsonb_path_query_first('[{"a": 1}, {"a": 2}]', '$[*].a ? (@ > 10)');
+SELECT jsonb_path_query_first('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*].a ? (@ > $min && @ < $max)', '{"min": 1, "max": 4}');
+SELECT jsonb_path_query_first('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*].a ? (@ > $min && @ < $max)', '{"min": 3, "max": 4}');
+
+SELECT jsonb '[{"a": 1}, {"a": 2}]' @? '$[*].a ? (@ > 1)';
+SELECT jsonb '[{"a": 1}, {"a": 2}]' @? '$[*] ? (@.a > 2)';
+SELECT jsonb_path_exists('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*] ? (@.a > $min && @.a < $max)', '{"min": 1, "max": 4}');
+SELECT jsonb_path_exists('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*] ? (@.a > $min && @.a < $max)', '{"min": 3, "max": 4}');
+
+SELECT jsonb '[{"a": 1}, {"a": 2}]' @@ '$[*].a > 1';
+SELECT jsonb '[{"a": 1}, {"a": 2}]' @@ '$[*].a > 2';
diff --git a/src/test/regress/sql/jsonpath.sql b/src/test/regress/sql/jsonpath.sql
new file mode 100644
index 0000000..b548bc8
--- /dev/null
+++ b/src/test/regress/sql/jsonpath.sql
@@ -0,0 +1,144 @@
+--jsonpath io
+
+select ''::jsonpath;
+select '$'::jsonpath;
+select 'strict $'::jsonpath;
+select 'lax $'::jsonpath;
+select '$.a'::jsonpath;
+select '$.a.v'::jsonpath;
+select '$.a.*'::jsonpath;
+select '$.*[*]'::jsonpath;
+select '$.a[*]'::jsonpath;
+select '$.a[*][*]'::jsonpath;
+select '$[*]'::jsonpath;
+select '$[0]'::jsonpath;
+select '$[*][0]'::jsonpath;
+select '$[*].a'::jsonpath;
+select '$[*][0].a.b'::jsonpath;
+select '$.a.**.b'::jsonpath;
+select '$.a.**{2}.b'::jsonpath;
+select '$.a.**{2 to 2}.b'::jsonpath;
+select '$.a.**{2 to 5}.b'::jsonpath;
+select '$.a.**{0 to 5}.b'::jsonpath;
+select '$.a.**{5 to last}.b'::jsonpath;
+select '$+1'::jsonpath;
+select '$-1'::jsonpath;
+select '$--+1'::jsonpath;
+select '$.a/+-1'::jsonpath;
+
+select '"\b\f\r\n\t\v\"\''\\"'::jsonpath;
+select '''\b\f\r\n\t\v\"\''\\'''::jsonpath;
+select '"\x50\u0067\u{53}\u{051}\u{00004C}"'::jsonpath;
+select '''\x50\u0067\u{53}\u{051}\u{00004C}'''::jsonpath;
+select '$.foo\x50\u0067\u{53}\u{051}\u{00004C}\t\"bar'::jsonpath;
+
+select '$.g ? ($.a == 1)'::jsonpath;
+select '$.g ? (@ == 1)'::jsonpath;
+select '$.g ? (@.a == 1)'::jsonpath;
+select '$.g ? (@.a == 1 || @.a == 4)'::jsonpath;
+select '$.g ? (@.a == 1 && @.a == 4)'::jsonpath;
+select '$.g ? (@.a == 1 || @.a == 4 && @.b == 7)'::jsonpath;
+select '$.g ? (@.a == 1 || !(@.a == 4) && @.b == 7)'::jsonpath;
+select '$.g ? (@.a == 1 || !(@.x >= 123 || @.a == 4) && @.b == 7)'::jsonpath;
+select '$.g ? (@.x >= @[*]?(@.a > "abc"))'::jsonpath;
+select '$.g ? ((@.x >= 123 || @.a == 4) is unknown)'::jsonpath;
+select '$.g ? (exists (@.x))'::jsonpath;
+select '$.g ? (exists (@.x ? (@ == 14)))'::jsonpath;
+select '$.g ? ((@.x >= 123 || @.a == 4) && exists (@.x ? (@ == 14)))'::jsonpath;
+select '$.g ? (+@.x >= +-(+@.a + 2))'::jsonpath;
+
+select '$a'::jsonpath;
+select '$a.b'::jsonpath;
+select '$a[*]'::jsonpath;
+select '$.g ? (@.zip == $zip)'::jsonpath;
+select '$.a[1,2, 3 to 16]'::jsonpath;
+select '$.a[$a + 1, ($b[*]) to -($[0] * 2)]'::jsonpath;
+select '$.a[$.a.size() - 3]'::jsonpath;
+select 'last'::jsonpath;
+select '"last"'::jsonpath;
+select '$.last'::jsonpath;
+select '$ ? (last > 0)'::jsonpath;
+select '$[last]'::jsonpath;
+select '$[$[0] ? (last > 0)]'::jsonpath;
+
+select 'null.type()'::jsonpath;
+select '1.type()'::jsonpath;
+select '"aaa".type()'::jsonpath;
+select 'true.type()'::jsonpath;
+select '$.datetime()'::jsonpath;
+select '$.datetime("datetime template")'::jsonpath;
+
+select '$ ? (@ starts with "abc")'::jsonpath;
+select '$ ? (@ starts with $var)'::jsonpath;
+
+select '$ ? (@ like_regex "(invalid pattern")'::jsonpath;
+select '$ ? (@ like_regex "pattern")'::jsonpath;
+select '$ ? (@ like_regex "pattern" flag "")'::jsonpath;
+select '$ ? (@ like_regex "pattern" flag "i")'::jsonpath;
+select '$ ? (@ like_regex "pattern" flag "is")'::jsonpath;
+select '$ ? (@ like_regex "pattern" flag "isim")'::jsonpath;
+select '$ ? (@ like_regex "pattern" flag "xsms")'::jsonpath;
+select '$ ? (@ like_regex "pattern" flag "a")'::jsonpath;
+
+select '$ < 1'::jsonpath;
+select '($ < 1) || $.a.b <= $x'::jsonpath;
+select '@ + 1'::jsonpath;
+
+select '($).a.b'::jsonpath;
+select '($.a.b).c.d'::jsonpath;
+select '($.a.b + -$.x.y).c.d'::jsonpath;
+select '(-+$.a.b).c.d'::jsonpath;
+select '1 + ($.a.b + 2).c.d'::jsonpath;
+select '1 + ($.a.b > 2).c.d'::jsonpath;
+select '($)'::jsonpath;
+select '(($))'::jsonpath;
+select '((($ + 1)).a + ((2)).b ? ((((@ > 1)) || (exists(@.c)))))'::jsonpath;
+
+select '$ ? (@.a < 1)'::jsonpath;
+select '$ ? (@.a < -1)'::jsonpath;
+select '$ ? (@.a < +1)'::jsonpath;
+select '$ ? (@.a < .1)'::jsonpath;
+select '$ ? (@.a < -.1)'::jsonpath;
+select '$ ? (@.a < +.1)'::jsonpath;
+select '$ ? (@.a < 0.1)'::jsonpath;
+select '$ ? (@.a < -0.1)'::jsonpath;
+select '$ ? (@.a < +0.1)'::jsonpath;
+select '$ ? (@.a < 10.1)'::jsonpath;
+select '$ ? (@.a < -10.1)'::jsonpath;
+select '$ ? (@.a < +10.1)'::jsonpath;
+select '$ ? (@.a < 1e1)'::jsonpath;
+select '$ ? (@.a < -1e1)'::jsonpath;
+select '$ ? (@.a < +1e1)'::jsonpath;
+select '$ ? (@.a < .1e1)'::jsonpath;
+select '$ ? (@.a < -.1e1)'::jsonpath;
+select '$ ? (@.a < +.1e1)'::jsonpath;
+select '$ ? (@.a < 0.1e1)'::jsonpath;
+select '$ ? (@.a < -0.1e1)'::jsonpath;
+select '$ ? (@.a < +0.1e1)'::jsonpath;
+select '$ ? (@.a < 10.1e1)'::jsonpath;
+select '$ ? (@.a < -10.1e1)'::jsonpath;
+select '$ ? (@.a < +10.1e1)'::jsonpath;
+select '$ ? (@.a < 1e-1)'::jsonpath;
+select '$ ? (@.a < -1e-1)'::jsonpath;
+select '$ ? (@.a < +1e-1)'::jsonpath;
+select '$ ? (@.a < .1e-1)'::jsonpath;
+select '$ ? (@.a < -.1e-1)'::jsonpath;
+select '$ ? (@.a < +.1e-1)'::jsonpath;
+select '$ ? (@.a < 0.1e-1)'::jsonpath;
+select '$ ? (@.a < -0.1e-1)'::jsonpath;
+select '$ ? (@.a < +0.1e-1)'::jsonpath;
+select '$ ? (@.a < 10.1e-1)'::jsonpath;
+select '$ ? (@.a < -10.1e-1)'::jsonpath;
+select '$ ? (@.a < +10.1e-1)'::jsonpath;
+select '$ ? (@.a < 1e+1)'::jsonpath;
+select '$ ? (@.a < -1e+1)'::jsonpath;
+select '$ ? (@.a < +1e+1)'::jsonpath;
+select '$ ? (@.a < .1e+1)'::jsonpath;
+select '$ ? (@.a < -.1e+1)'::jsonpath;
+select '$ ? (@.a < +.1e+1)'::jsonpath;
+select '$ ? (@.a < 0.1e+1)'::jsonpath;
+select '$ ? (@.a < -0.1e+1)'::jsonpath;
+select '$ ? (@.a < +0.1e+1)'::jsonpath;
+select '$ ? (@.a < 10.1e+1)'::jsonpath;
+select '$ ? (@.a < -10.1e+1)'::jsonpath;
+select '$ ? (@.a < +10.1e+1)'::jsonpath;
diff --git a/src/tools/msvc/Mkvcbuild.pm b/src/tools/msvc/Mkvcbuild.pm
index 56192f1..0738c37 100644
--- a/src/tools/msvc/Mkvcbuild.pm
+++ b/src/tools/msvc/Mkvcbuild.pm
@@ -177,6 +177,8 @@ sub mkvcbuild
'src/backend/replication', 'repl_scanner.l',
'repl_gram.y', 'syncrep_scanner.l',
'syncrep_gram.y');
+ $postgres->AddFiles('src/backend/utils/adt', 'jsonpath_scan.l',
+ 'jsonpath_gram.y');
$postgres->AddDefine('BUILDING_DLL');
$postgres->AddLibrary('secur32.lib');
$postgres->AddLibrary('ws2_32.lib');
diff --git a/src/tools/msvc/Solution.pm b/src/tools/msvc/Solution.pm
index e4bb9d2..c46bae7 100644
--- a/src/tools/msvc/Solution.pm
+++ b/src/tools/msvc/Solution.pm
@@ -327,6 +327,24 @@ sub GenerateFiles
);
}
+ if (IsNewer(
+ 'src/backend/utils/adt/jsonpath_gram.h',
+ 'src/backend/utils/adt/jsonpath_gram.y'))
+ {
+ print "Generating jsonpath_gram.h...\n";
+ chdir('src/backend/utils/adt');
+ system('perl ../../../tools/msvc/pgbison.pl jsonpath_gram.y');
+ chdir('../../../..');
+ }
+
+ if (IsNewer(
+ 'src/include/utils/jsonpath_gram.h',
+ 'src/backend/utils/adt/jsonpath_gram.h'))
+ {
+ copyFile('src/backend/utils/adt/jsonpath_gram.h',
+ 'src/include/utils/jsonpath_gram.h');
+ }
+
if ($self->{options}->{python}
&& IsNewer(
'src/pl/plpython/spiexceptions.h',
--
2.7.4
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Message-ID: <264a6413-7175-9680-b976-d50392c001c0@postgrespro.ru>
Permalink: ../264a6413-7175-9680-b976-d50392c001c0@postgrespro.ru/
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Cc: n.gluhov@postgrespro.ru, obartunov@postgrespro.ru, a.korotkov@postgrespro.ru, tomas.vondra@2ndquadrant.com, michael@paquier.xyz, s.kelvich@postgrespro.ru, thomas.munro@enterprisedb.com, david@pgmasters.net, tgl@sss.pgh.pa.us, andrew.dunstan@2ndquadrant.com, robertmhaas@gmail.com, pavel.stehule@gmail.com
Subject: Re: jsonpath
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