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/*-------------------------------------------------------------------------
*
* pg_inherits.h
* definition of the "inherits" system catalog (pg_inherits)
*
*
* Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/catalog/pg_inherits.h
*
* NOTES
* The Catalog.pm module reads this file and derives schema
* information.
*
*-------------------------------------------------------------------------
*/
#ifndef PG_INHERITS_H
#define PG_INHERITS_H
#include "catalog/genbki.h"
#include "catalog/pg_inherits_d.h"
#include "nodes/pg_list.h"
#include "storage/lock.h"
/* ----------------
* pg_inherits definition. cpp turns this into
* typedef struct FormData_pg_inherits
* ----------------
*/
CATALOG(pg_inherits,2611,InheritsRelationId)
{
Oid inhrelid;
Oid inhparent;
int32 inhseqno;
} FormData_pg_inherits;
/* ----------------
* Form_pg_inherits corresponds to a pointer to a tuple with
* the format of pg_inherits relation.
* ----------------
*/
typedef FormData_pg_inherits *Form_pg_inherits;
extern List *find_inheritance_children(Oid parentrelId, LOCKMODE lockmode);
extern List *find_all_inheritors(Oid parentrelId, LOCKMODE lockmode,
List **parents);
extern bool has_subclass(Oid relationId);
extern bool has_superclass(Oid relationId);
extern bool typeInheritsFrom(Oid subclassTypeId, Oid superclassTypeId);
extern void StoreSingleInheritance(Oid relationId, Oid parentOid,
int32 seqNumber);
extern bool DeleteInheritsTuple(Oid inhrelid, Oid inhparent);
#endif /* PG_INHERITS_H */
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