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/*-------------------------------------------------------------------------
*
* syscache.h
* System catalog cache definitions.
*
* See also lsyscache.h, which provides convenience routines for
* common cache-lookup operations.
*
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: syscache.h,v 1.45 2002/04/16 23:08:12 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef SYSCACHE_H
#define SYSCACHE_H
#include "access/htup.h"
/*
* Declarations for util/syscache.c.
*
* SysCache identifiers.
*
* The order of these must match the order
* they are entered into the structure cacheinfo[] in syscache.c.
* Keep them in alphabetical order.
*/
#define AGGFNOID 0
#define AMNAME 1
#define AMOID 2
#define AMOPOPID 3
#define AMOPSTRATEGY 4
#define AMPROCNUM 5
#define ATTNAME 6
#define ATTNUM 7
#define CLAAMNAME 8
#define CLAOID 9
#define GRONAME 10
#define GROSYSID 11
#define INDEXRELID 12
#define INHRELID 13
#define LANGNAME 14
#define LANGOID 15
#define NAMESPACENAME 16
#define NAMESPACEOID 17
#define OPERNAMENSP 18
#define OPEROID 19
#define PROCNAMENSP 20
#define PROCOID 21
#define RELNAMENSP 22
#define RELOID 23
#define RULENAME 24
#define SHADOWNAME 25
#define SHADOWSYSID 26
#define STATRELATT 27
#define TYPENAMENSP 28
#define TYPEOID 29
extern void InitCatalogCache(void);
extern void InitCatalogCachePhase2(void);
extern HeapTuple SearchSysCache(int cacheId,
Datum key1, Datum key2, Datum key3, Datum key4);
extern void ReleaseSysCache(HeapTuple tuple);
/* convenience routines */
extern HeapTuple SearchSysCacheCopy(int cacheId,
Datum key1, Datum key2, Datum key3, Datum key4);
extern bool SearchSysCacheExists(int cacheId,
Datum key1, Datum key2, Datum key3, Datum key4);
extern Oid GetSysCacheOid(int cacheId,
Datum key1, Datum key2, Datum key3, Datum key4);
extern Datum SysCacheGetAttr(int cacheId, HeapTuple tup,
AttrNumber attributeNumber, bool *isNull);
/* list-search interface. Users of this must import catcache.h too */
extern struct catclist *SearchSysCacheList(int cacheId, int nkeys,
Datum key1, Datum key2, Datum key3, Datum key4);
#define ReleaseSysCacheList(x) ReleaseCatCacheList(x)
#endif /* SYSCACHE_H */
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