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Annotation of win32/sql/pgsql/include/postgres_ext.h, revision 1.2

1.1       parser      1: /*-------------------------------------------------------------------------
                      2:  *
                      3:  * postgres_ext.h
                      4:  *
                      5:  *        This file contains declarations of things that are visible everywhere
                      6:  *     in PostgreSQL *and* are visible to clients of frontend interface libraries.
                      7:  *     For example, the Oid type is part of the API of libpq and other libraries.
                      8:  *
                      9:  *        Declarations which are specific to a particular interface should
                     10:  *     go in the header file for that interface (such as libpq-fe.h).  This
                     11:  *     file is only for fundamental Postgres declarations.
                     12:  *
                     13:  *        User-written C functions don't count as "external to Postgres."
                     14:  *     Those function much as local modifications to the backend itself, and
                     15:  *     use header files that are otherwise internal to Postgres to interface
                     16:  *     with the backend.
                     17:  *
1.2     ! misha      18:  * $PostgreSQL: pgsql/src/include/postgres_ext.h,v 1.16 2004/08/29 05:06:55 momjian Exp $
1.1       parser     19:  *
                     20:  *-------------------------------------------------------------------------
                     21:  */
                     22: 
                     23: #ifndef POSTGRES_EXT_H
                     24: #define POSTGRES_EXT_H
                     25: 
                     26: /*
                     27:  * Object ID is a fundamental type in Postgres.
                     28:  */
                     29: typedef unsigned int Oid;
                     30: 
1.2     ! misha      31: #ifdef __cplusplus
        !            32: #define InvalidOid             (Oid(0))
        !            33: #else
1.1       parser     34: #define InvalidOid             ((Oid) 0)
1.2     ! misha      35: #endif
1.1       parser     36: 
                     37: #define OID_MAX  UINT_MAX
                     38: /* you will need to include <limits.h> to use the above #define */
                     39: 
                     40: 
                     41: /*
                     42:  * NAMEDATALEN is the max length for system identifiers (e.g. table names,
1.2     ! misha      43:  * attribute names, function names, etc).  It must be a multiple of
        !            44:  * sizeof(int) (typically 4).
1.1       parser     45:  *
                     46:  * NOTE that databases with different NAMEDATALEN's cannot interoperate!
                     47:  */
1.2     ! misha      48: #define NAMEDATALEN 64
        !            49: 
        !            50: 
        !            51: /*
        !            52:  * Identifiers of error message fields.  Kept here to keep common
        !            53:  * between frontend and backend, and also to export them to libpq
        !            54:  * applications.
        !            55:  */
        !            56: #define PG_DIAG_SEVERITY               'S'
        !            57: #define PG_DIAG_SQLSTATE               'C'
        !            58: #define PG_DIAG_MESSAGE_PRIMARY 'M'
        !            59: #define PG_DIAG_MESSAGE_DETAIL 'D'
        !            60: #define PG_DIAG_MESSAGE_HINT   'H'
        !            61: #define PG_DIAG_STATEMENT_POSITION 'P'
        !            62: #define PG_DIAG_INTERNAL_POSITION 'p'
        !            63: #define PG_DIAG_INTERNAL_QUERY 'q'
        !            64: #define PG_DIAG_CONTEXT                        'W'
        !            65: #define PG_DIAG_SOURCE_FILE            'F'
        !            66: #define PG_DIAG_SOURCE_LINE            'L'
        !            67: #define PG_DIAG_SOURCE_FUNCTION 'R'
1.1       parser     68: 
                     69: #endif