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/*-------------------------------------------------------------------------
*
* syscache.h
* System catalog cache definitions.
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: syscache.h,v 1.13 1999/02/13 23:22:32 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef SYSCACHE_H
#define SYSCACHE_H
#include <access/attnum.h>
#include <access/htup.h>
#include <storage/buf.h>
#include <utils/rel.h>
/* #define CACHEDEBUG *//* turns DEBUG elogs on */
/*
* 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
* The best thing to do is to add yours at the END, because some
* code assumes that certain caches are at certain places in this
* array.
*/
#define AMOPOPID 0
#define AMOPSTRATEGY 1
#define ATTNAME 2
#define ATTNUM 3
#define INDEXRELID 4
#define LANNAME 5
#define OPRNAME 6
#define OPROID 7
#define PRONAME 8
#define PROOID 9
#define RELNAME 10
#define RELOID 11
#define TYPNAME 12
#define TYPOID 13
#define AMNAME 14
#define CLANAME 15
#define INDRELIDKEY 16
#define INHRELID 17
#define RULOID 18
#define AGGNAME 19
#define LISTENREL 20
#define USENAME 21
#define USESYSID 22
#define GRONAME 23
#define GROSYSID 24
#define REWRITENAME 25
#define PROSRC 26
#define CLADEFTYPE 27
#define LANOID 28
/* ----------------
* struct cachedesc: information needed for a call to InitSysCache()
* ----------------
*/
struct cachedesc
{
char *name; /* this is Name so that we can initialize
* it */
int nkeys;
int key[4];
int size; /* sizeof(appropriate struct) */
char *indname; /* index relation for this cache, if
* exists */
HeapTuple (*iScanFunc) ();/* function to handle index scans */
};
extern void zerocaches(void);
extern void InitCatalogCache(void);
extern HeapTuple SearchSysCacheTupleCopy(int cacheId,
Datum key1, Datum key2, Datum key3, Datum key4);
extern HeapTuple SearchSysCacheTuple(int cacheId,
Datum key1, Datum key2, Datum key3, Datum key4);
extern int32 SearchSysCacheStruct(int cacheId, char *returnStruct,
Datum key1, Datum key2, Datum key3, Datum key4);
extern void *SearchSysCacheGetAttribute(int cacheId,
AttrNumber attributeNumber,
Datum key1, Datum key2, Datum key3, Datum key4);
extern void *TypeDefaultRetrieve(Oid typId);
#endif /* SYSCACHE_H */
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