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Diffstat (limited to 'src/include/catalog/pg_inherits.h')
-rw-r--r-- | src/include/catalog/pg_inherits.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/include/catalog/pg_inherits.h b/src/include/catalog/pg_inherits.h new file mode 100644 index 0000000..0432c3a --- /dev/null +++ b/src/include/catalog/pg_inherits.h @@ -0,0 +1,57 @@ +/*------------------------------------------------------------------------- + * + * 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 */ |