/*-------------------------------------------------------------------------
*
* pg_am . h
* definition of the " access method " system catalog ( pg_am )
*
*
* Portions Copyright ( c ) 1996 - 2025 , PostgreSQL Global Development Group
* Portions Copyright ( c ) 1994 , Regents of the University of California
*
* src / include / catalog / pg_am . h
*
* NOTES
* The Catalog . pm module reads this file and derives schema
* information .
*
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*/
#ifndef PG_AM_H
#define PG_AM_H
#include "catalog/genbki.h"
#include "catalog/pg_am_d.h" /* IWYU pragma: export */
/* ----------------
* pg_am definition . cpp turns this into
* typedef struct FormData_pg_am
* - - - - - - - - - - - - - - - -
*/
CATALOG(pg_am,2601 ,AccessMethodRelationId)
{
Oid oid; /* oid */
/* access method name */
NameData amname;
/* handler function */
regproc amhandler BKI_LOOKUP(pg_proc);
/* see AMTYPE_xxx constants below */
char amtype;
} FormData_pg_am;
/* ----------------
* Form_pg_am corresponds to a pointer to a tuple with
* the format of pg_am relation .
* - - - - - - - - - - - - - - - -
*/
typedef FormData_pg_am *Form_pg_am;
DECLARE_UNIQUE_INDEX(pg_am_name_index, 2651 , AmNameIndexId, pg_am, btree(amname name_ops));
DECLARE_UNIQUE_INDEX_PKEY(pg_am_oid_index, 2652 , AmOidIndexId, pg_am, btree(oid oid_ops));
MAKE_SYSCACHE(AMNAME, pg_am_name_index, 4 );
MAKE_SYSCACHE(AMOID, pg_am_oid_index, 4 );
#ifdef EXPOSE_TO_CLIENT_CODE
/*
* Allowed values for amtype
*/
#define AMTYPE_INDEX 'i' /* index access method */
#define AMTYPE_TABLE 't' /* table access method */
#endif /* EXPOSE_TO_CLIENT_CODE */
#endif /* PG_AM_H */
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