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pg_inherits.h
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1 /*-------------------------------------------------------------------------
2  *
3  * pg_inherits.h
4  * definition of the "inherits" system catalog (pg_inherits)
5  *
6  *
7  * Portions Copyright (c) 1996-2020, 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  */
32 CATALOG(pg_inherits,2611,InheritsRelationId)
33 {
34  Oid inhrelid;
35  Oid inhparent;
36  int32 inhseqno;
38 
39 /* ----------------
40  * Form_pg_inherits corresponds to a pointer to a tuple with
41  * the format of pg_inherits relation.
42  * ----------------
43  */
45 
46 DECLARE_UNIQUE_INDEX(pg_inherits_relid_seqno_index, 2680, on pg_inherits using btree(inhrelid oid_ops, inhseqno int4_ops));
47 #define InheritsRelidSeqnoIndexId 2680
48 DECLARE_INDEX(pg_inherits_parent_index, 2187, on pg_inherits using btree(inhparent oid_ops));
49 #define InheritsParentIndexId 2187
50 
51 
52 extern List *find_inheritance_children(Oid parentrelId, LOCKMODE lockmode);
53 extern List *find_all_inheritors(Oid parentrelId, LOCKMODE lockmode,
54  List **parents);
55 extern bool has_subclass(Oid relationId);
56 extern bool has_superclass(Oid relationId);
57 extern bool typeInheritsFrom(Oid subclassTypeId, Oid superclassTypeId);
58 extern void StoreSingleInheritance(Oid relationId, Oid parentOid,
59  int32 seqNumber);
60 extern bool DeleteInheritsTuple(Oid inhrelid, Oid inhparent);
61 
62 #endif /* PG_INHERITS_H */
int LOCKMODE
Definition: lockdefs.h:26
bool has_superclass(Oid relationId)
Definition: pg_inherits.c:286
unsigned int Oid
Definition: postgres_ext.h:31
CATALOG(pg_inherits, 2611, InheritsRelationId)
Definition: pg_inherits.h:32
signed int int32
Definition: c.h:417
bool typeInheritsFrom(Oid subclassTypeId, Oid superclassTypeId)
Definition: pg_inherits.c:315
bool DeleteInheritsTuple(Oid inhrelid, Oid inhparent)
Definition: pg_inherits.c:454
List * find_all_inheritors(Oid parentrelId, LOCKMODE lockmode, List **parents)
Definition: pg_inherits.c:165
DECLARE_UNIQUE_INDEX(pg_inherits_relid_seqno_index, 2680, on pg_inherits using btree(inhrelid oid_ops, inhseqno int4_ops))
FormData_pg_inherits * Form_pg_inherits
Definition: pg_inherits.h:44
FormData_pg_inherits
Definition: pg_inherits.h:37
List * find_inheritance_children(Oid parentrelId, LOCKMODE lockmode)
Definition: pg_inherits.c:55
Definition: pg_list.h:50
void StoreSingleInheritance(Oid relationId, Oid parentOid, int32 seqNumber)
Definition: pg_inherits.c:417
DECLARE_INDEX(pg_inherits_parent_index, 2187, on pg_inherits using btree(inhparent oid_ops))
bool has_subclass(Oid relationId)
Definition: pg_inherits.c:266