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69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
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/*-------------------------------------------------------------------------
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*
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* postgres_ext.h
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*
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* This file contains declarations of things that are visible everywhere
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* in PostgreSQL *and* are visible to clients of frontend interface
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*libraries. For example, the Oid type is part of the API of libpq and other
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*libraries.
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*
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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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*
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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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* $Id: postgres_ext.h,v 1.13 2003/08/27 00:33:34 petere Exp $
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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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/*
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* Object ID is a fundamental type in Postgres.
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*/
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typedef uint32_t Oid;
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#ifdef __cplusplus
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#define InvalidOid (Oid(0))
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#else
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#define InvalidOid ((Oid)0)
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#endif
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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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* attribute names, function names, etc). It must be a multiple of
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* sizeof(int32_t) (typically 4).
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*
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* NOTE that databases with different NAMEDATALEN's cannot interoperate!
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*/
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#define NAMEDATALEN 64
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/*
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* Identifiers of error message fields. Kept here to keep common
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* between frontend and backend, and also to export them to libpq
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* applications.
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*/
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#define PG_DIAG_SEVERITY 'S'
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#define PG_DIAG_SQLSTATE 'C'
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#define PG_DIAG_MESSAGE_PRIMARY 'M'
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#define PG_DIAG_MESSAGE_DETAIL 'D'
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#define PG_DIAG_MESSAGE_HINT 'H'
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#define PG_DIAG_STATEMENT_POSITION 'P'
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#define PG_DIAG_CONTEXT 'W'
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#define PG_DIAG_SOURCE_FILE 'F'
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#define PG_DIAG_SOURCE_LINE 'L'
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#define PG_DIAG_SOURCE_FUNCTION 'R'
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#endif
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