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help / color / mirror / Atom feedFrom: Sutou Kouhei <[email protected]>
Subject: [PATCH v27 8/9] Add support for implementing custom COPY FROM format as extension
Date: Mon, 25 Nov 2024 14:21:39 +0900
* Add CopyFromStateData::opaque that can be used to keep data for
custom COPY From format implementation
* Export CopyReadBinaryData() to read the next data as
CopyFromStateRead()
---
src/backend/commands/copyfromparse.c | 12 ++++++++++++
src/include/commands/copyapi.h | 5 +++++
2 files changed, 17 insertions(+)
diff --git a/src/backend/commands/copyfromparse.c b/src/backend/commands/copyfromparse.c
index 1c68b0d2952..0a7e7255b7d 100644
--- a/src/backend/commands/copyfromparse.c
+++ b/src/backend/commands/copyfromparse.c
@@ -729,6 +729,18 @@ CopyReadBinaryData(CopyFromState cstate, char *dest, int nbytes)
return copied_bytes;
}
+/*
+ * Export CopyReadBinaryData() for extensions. We want to keep
+ * CopyReadBinaryData() as a static function for
+ * optimization. CopyReadBinaryData() calls in this file may be optimized by
+ * a compiler.
+ */
+int
+CopyFromStateRead(CopyFromState cstate, char *dest, int nbytes)
+{
+ return CopyReadBinaryData(cstate, dest, nbytes);
+}
+
/*
* Read raw fields in the next line for COPY FROM in text or csv mode.
* Return false if no more lines.
diff --git a/src/include/commands/copyapi.h b/src/include/commands/copyapi.h
index 335584f8877..caba308533d 100644
--- a/src/include/commands/copyapi.h
+++ b/src/include/commands/copyapi.h
@@ -335,6 +335,11 @@ typedef struct CopyFromStateData
#define RAW_BUF_BYTES(cstate) ((cstate)->raw_buf_len - (cstate)->raw_buf_index)
uint64 bytes_processed; /* number of bytes processed so far */
+
+ /* For custom format implementation */
+ void *opaque; /* private space */
} CopyFromStateData;
+extern int CopyFromStateRead(CopyFromState cstate, char *dest, int nbytes);
+
#endif /* COPYAPI_H */
--
2.45.2
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Content-Transfer-Encoding: 7bit
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filename="v27-0009-Add-CopyFromSkipErrorRow-for-custom-COPY-format-.patch"
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