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* ECPG and typedef struct
@ 2004-01-19 18:31 Edmund Bacon <ebacon@onesystem.com>
0 siblings, 1 reply; 2+ messages in thread
From: Edmund Bacon @ 2004-01-19 18:31 UTC (permalink / raw)
To: pgsql-interfaces
Is it still necessary to define SQL TYPEs twice?
eg
typedef struct foo { ... } foo_t;
EXEC SQL TYPE foo_t IS struct foo { ... };
Is there some less maintenance-error-prone way to accomplish this? I
know about the -c option to ecpg, but this doesn't help if I need to
access the defined type from a .c file.
Ideally the C level typedef would be in a .h file somewhere and either
#include-ed or EXEC SQL INCLUDE-ed into .c or .pgc file
Thanks
--
Edmund Bacon <ebacon@onesystem.com>
^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: ECPG and typedef struct
@ 2004-01-27 17:53 Michael Meskes <meskes@postgresql.org>
parent: Edmund Bacon <ebacon@onesystem.com>
0 siblings, 0 replies; 2+ messages in thread
From: Michael Meskes @ 2004-01-27 17:53 UTC (permalink / raw)
To: Edmund Bacon <ebacon@onesystem.com>; +Cc: pgsql-interfaces
On Mon, Jan 19, 2004 at 11:31:36AM -0700, Edmund Bacon wrote:
> Is it still necessary to define SQL TYPEs twice?
It depends, but teh way you ask, yes.
> Is there some less maintenance-error-prone way to accomplish this? I
> know about the -c option to ecpg, but this doesn't help if I need to
> access the defined type from a .c file.
Why? Can't you just put it into a header file that is processed by ecpg
to create a C header and use "-c" for this? Okay, this does include the
ecpg headers also, but if that's the problem we could add an option
easily.
How about an option "parsing header file"?
> Ideally the C level typedef would be in a .h file somewhere and either
> #include-ed or EXEC SQL INCLUDE-ed into .c or .pgc file
Would it be okay to do this:
Write a *.pgh file, that is SQL-INCLUDE-ed in embedded sql files. For C
you'd call "ecpg -h" on that file, making ecpg produce a .h file, that
can be included by your C code.
Hmm, I think I'm going to implement that immediately. :-)
Michael
--
Michael Meskes
Email: Michael at Fam-Meskes dot De
ICQ: 179140304, AIM/Yahoo: michaelmeskes, Jabber: meskes@jabber.org
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2004-01-19 18:31 ECPG and typedef struct Edmund Bacon <ebacon@onesystem.com>
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