1996-12-10 08:03:43 +01:00
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/*-------------------------------------------------------------------------
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*
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1999-02-14 00:22:53 +01:00
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* postgres_ext.h
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1996-12-10 08:03:43 +01:00
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*
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2001-02-10 03:31:31 +01:00
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* This file contains declarations of things that are visible everywhere
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2001-03-22 05:01:46 +01:00
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* in PostgreSQL *and* are visible to clients of frontend interface libraries.
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2001-02-10 03:31:31 +01:00
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* For example, the Oid type is part of the API of libpq and other libraries.
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1996-12-10 08:03:43 +01:00
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*
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1997-09-07 07:04:48 +02:00
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* Declarations which are specific to a particular interface should
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* go in the header file for that interface (such as libpq-fe.h). This
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* file is only for fundamental Postgres declarations.
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1996-12-10 08:03:43 +01:00
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*
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1997-09-07 07:04:48 +02:00
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* User-written C functions don't count as "external to Postgres."
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* Those function much as local modifications to the backend itself, and
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* use header files that are otherwise internal to Postgres to interface
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* with the backend.
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*
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2002-08-13 22:40:44 +02:00
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* $Id: postgres_ext.h,v 1.11 2002/08/13 20:40:44 momjian Exp $
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1996-12-10 08:03:43 +01:00
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef POSTGRES_EXT_H
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#define POSTGRES_EXT_H
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2000-12-22 22:36:09 +01:00
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/*
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* Object ID is a fundamental type in Postgres.
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*/
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1996-12-10 08:03:43 +01:00
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typedef unsigned int Oid;
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2001-02-10 03:31:31 +01:00
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#define InvalidOid ((Oid) 0)
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2000-12-22 22:36:09 +01:00
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#define OID_MAX UINT_MAX
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/* you will need to include <limits.h> to use the above #define */
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/*
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* NAMEDATALEN is the max length for system identifiers (e.g. table names,
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2002-04-30 21:53:03 +02:00
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* attribute names, function names, etc). It must be a multiple of
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* sizeof(int) (typically 4).
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1996-12-10 08:03:43 +01:00
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*
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* NOTE that databases with different NAMEDATALEN's cannot interoperate!
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1997-09-07 07:04:48 +02:00
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*/
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2002-08-13 22:40:44 +02:00
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#define NAMEDATALEN 64
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2001-10-28 07:26:15 +01:00
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1996-12-10 08:03:43 +01:00
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#endif
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