src/include/catalog/pg_largeobject.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * pg_largeobject.h
   4  *        definition of the system "largeobject" relation (pg_largeobject)
   5  *        along with the relation's initial contents.
   6  *
   7  *
   8  * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
   9  * Portions Copyright (c) 1994, Regents of the University of California
  10  *
  11  * $PostgreSQL$
  12  *
  13  * NOTES
  14  *        the genbki.sh script reads this file and generates .bki
  15  *        information from the DATA() statements.
  16  *
  17  *-------------------------------------------------------------------------
  18  */
  19 #ifndef PG_LARGEOBJECT_H
  20 #define PG_LARGEOBJECT_H
  21
  22 #include "catalog/genbki.h"
  23
  24 /* ----------------
  25  *              pg_largeobject definition.      cpp turns this into
  26  *              typedef struct FormData_pg_largeobject
  27  * ----------------
  28  */
  29 #define LargeObjectRelationId  2613
  30
  31 CATALOG(pg_largeobject,2613) BKI_WITHOUT_OIDS
  32 {
  33         Oid                     loid;                   /* Identifier of large object */
  34         int4            pageno;                 /* Page number (starting from 0) */
  35         bytea           data;                   /* Data for page (may be zero-length) */
  36 } FormData_pg_largeobject;
  37
  38 /* ----------------
  39  *              Form_pg_largeobject corresponds to a pointer to a tuple with
  40  *              the format of pg_largeobject relation.
  41  * ----------------
  42  */
  43 typedef FormData_pg_largeobject *Form_pg_largeobject;
  44
  45 /* ----------------
  46  *              compiler constants for pg_largeobject
  47  * ----------------
  48  */
  49 #define Natts_pg_largeobject                    3
  50 #define Anum_pg_largeobject_loid                1
  51 #define Anum_pg_largeobject_pageno              2
  52 #define Anum_pg_largeobject_data                3
  53
  54 extern void LargeObjectCreate(Oid loid);
  55 extern void LargeObjectDrop(Oid loid);
  56 extern bool LargeObjectExists(Oid loid);
  57
  58 #endif   /* PG_LARGEOBJECT_H */