1/*-------------------------------------------------------------------------
2 *
3 * pg_inherits.h
4 * definition of the "inherits" system catalog (pg_inherits)
5 *
6 *
7 * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
9 *
10 * src/include/catalog/pg_inherits.h
11 *
12 * NOTES
13 * The Catalog.pm module reads this file and derives schema
14 * information.
15 *
16 *-------------------------------------------------------------------------
17 */
18#ifndef PG_INHERITS_H
19#define PG_INHERITS_H
20
21#include "catalog/genbki.h"
22#include "catalog/pg_inherits_d.h"
23
24#include "nodes/pg_list.h"
25#include "storage/lock.h"
26
27/* ----------------
28 * pg_inherits definition. cpp turns this into
29 * typedef struct FormData_pg_inherits
30 * ----------------
31 */
32CATALOG(pg_inherits,2611,InheritsRelationId)
33{
34 Oid inhrelid;
35 Oid inhparent;
36 int32 inhseqno;
37} FormData_pg_inherits;
38
39/* ----------------
40 * Form_pg_inherits corresponds to a pointer to a tuple with
41 * the format of pg_inherits relation.
42 * ----------------
43 */
44typedef FormData_pg_inherits *Form_pg_inherits;
45
46
47extern List *find_inheritance_children(Oid parentrelId, LOCKMODE lockmode);
48extern List *find_all_inheritors(Oid parentrelId, LOCKMODE lockmode,
49 List **parents);
50extern bool has_subclass(Oid relationId);
51extern bool has_superclass(Oid relationId);
52extern bool typeInheritsFrom(Oid subclassTypeId, Oid superclassTypeId);
53extern void StoreSingleInheritance(Oid relationId, Oid parentOid,
54 int32 seqNumber);
55extern bool DeleteInheritsTuple(Oid inhrelid, Oid inhparent);
56
57#endif /* PG_INHERITS_H */
58