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Annotation of win32/sql/pgsql/include/postgres_ext.h, revision 1.1.1.1

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:  *
                     18:  * $Id: postgres_ext.h,v 1.1 2001/07/30 15:32:18 parser Exp $
                     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: 
                     31: #define InvalidOid             ((Oid) 0)
                     32: 
                     33: #define OID_MAX  UINT_MAX
                     34: /* you will need to include <limits.h> to use the above #define */
                     35: 
                     36: 
                     37: /*
                     38:  * NAMEDATALEN is the max length for system identifiers (e.g. table names,
                     39:  * attribute names, function names, etc.)
                     40:  *
                     41:  * NOTE that databases with different NAMEDATALEN's cannot interoperate!
                     42:  */
                     43: #define NAMEDATALEN 32
                     44: 
                     45: #endif