text: /*-------------------------------------------------------------------------
   *
   * pg_largeobject.h
   *	  definition of the system "largeobject" relation (pg_largeobject)
   *	  along with the relation's initial contents.
   *
   *
   * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
   * Portions Copyright (c) 1994, Regents of the University of California
   *
   * $PostgreSQL: pgsql/src/include/catalog/pg_largeobject.h,v 1.19 2005/04/14 01:38:20 tgl Exp $
   *
   * NOTES
   *	  the genbki.sh script reads this file and generates .bki
   *	  information from the DATA() statements.
   *
   *-------------------------------------------------------------------------
   */
  #ifndef PG_LARGEOBJECT_H
  #define PG_LARGEOBJECT_H
  
  /* ----------------
   *		postgres.h contains the system type definitions and the
   *		CATALOG(), BKI_BOOTSTRAP and DATA() sugar words so this file
   *		can be read by both genbki.sh and the C compiler.
   * ----------------
   */
  
  /* ----------------
   *		pg_largeobject definition.	cpp turns this into
   *		typedef struct FormData_pg_largeobject
   * ----------------
   */
  #define LargeObjectRelationId  2613
  
  CATALOG(pg_largeobject,2613) BKI_WITHOUT_OIDS
  {
  	Oid			loid;			/* Identifier of large object */
  	int4		pageno;			/* Page number (starting from 0) */
  	bytea		data;			/* Data for page (may be zero-length) */
  } FormData_pg_largeobject;
  
  /* ----------------
   *		Form_pg_largeobject corresponds to a pointer to a tuple with
   *		the format of pg_largeobject relation.
   * ----------------
   */
  typedef FormData_pg_largeobject *Form_pg_largeobject;
  
  /* ----------------
   *		compiler constants for pg_largeobject
   * ----------------
   */
  #define Natts_pg_largeobject			3
  #define Anum_pg_largeobject_loid		1
  #define Anum_pg_largeobject_pageno		2
  #define Anum_pg_largeobject_data		3
  
  extern void LargeObjectCreate(Oid loid);
  extern void LargeObjectDrop(Oid loid);
  extern bool LargeObjectExists(Oid loid);
  
  #endif   /* PG_LARGEOBJECT_H */
  