PostgreSQL Source Code: src/include/catalog/pg_am.h Source File

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pg_am.h
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1/*-------------------------------------------------------------------------
2 *
3 * pg_am.h
4 * definition of the "access method" system catalog (pg_am)
5 *
6 *
7 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
9 *
10 * src/include/catalog/pg_am.h
11 *
12 * NOTES
13 * The Catalog.pm module reads this file and derives schema
14 * information.
15 *
16 *-------------------------------------------------------------------------
17 */
18#ifndef PG_AM_H
19#define PG_AM_H
20
21#include "catalog/genbki.h"
22#include "catalog/pg_am_d.h" /* IWYU pragma: export */
23
24/* ----------------
25 * pg_am definition. cpp turns this into
26 * typedef struct FormData_pg_am
27 * ----------------
28 */
29 CATALOG(pg_am,2601,AccessMethodRelationId)
30{
31 Oid oid; /* oid */
32
33 /* access method name */
34 NameData amname;
35
36 /* handler function */
37 regproc amhandler BKI_LOOKUP(pg_proc);
38
39 /* see AMTYPE_xxx constants below */
40 char amtype;
41 } FormData_pg_am;
42
43/* ----------------
44 * Form_pg_am corresponds to a pointer to a tuple with
45 * the format of pg_am relation.
46 * ----------------
47 */
48 typedef FormData_pg_am *Form_pg_am;
49
50 DECLARE_UNIQUE_INDEX(pg_am_name_index, 2651, AmNameIndexId, pg_am, btree(amname name_ops));
51 DECLARE_UNIQUE_INDEX_PKEY(pg_am_oid_index, 2652, AmOidIndexId, pg_am, btree(oid oid_ops));
52
53 MAKE_SYSCACHE(AMNAME, pg_am_name_index, 4);
54 MAKE_SYSCACHE(AMOID, pg_am_oid_index, 4);
55
56#ifdef EXPOSE_TO_CLIENT_CODE
57
58/*
59 * Allowed values for amtype
60 */
61#define AMTYPE_INDEX 'i' /* index access method */
62#define AMTYPE_TABLE 't' /* table access method */
63
64#endif /* EXPOSE_TO_CLIENT_CODE */
65
66#endif /* PG_AM_H */
Oid regproc
Definition: c.h:654
#define BKI_LOOKUP(catalog)
Definition: genbki.h:46
DECLARE_UNIQUE_INDEX_PKEY(pg_am_oid_index, 2652, AmOidIndexId, pg_am, btree(oid oid_ops))
DECLARE_UNIQUE_INDEX(pg_am_name_index, 2651, AmNameIndexId, pg_am, btree(amname name_ops))
CATALOG(pg_am, 2601, AccessMethodRelationId)
Definition: pg_am.h:29
FormData_pg_am
Definition: pg_am.h:41
FormData_pg_am * Form_pg_am
Definition: pg_am.h:48
MAKE_SYSCACHE(AMNAME, pg_am_name_index, 4)
unsigned int Oid
Definition: postgres_ext.h:32
Definition: c.h:746

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