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db_include/catalog/pg_inherits.h

@@ -0,0 +1,68 @@
+/*-------------------------------------------------------------------------
+ *
+ * pg_inherits.h
+ *	  definition of the "inherits" system catalog (pg_inherits)
+ *
+ *
+ * Portions Copyright (c) 1996-2021, 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 BKI_LOOKUP(pg_class);
+	Oid			inhparent BKI_LOOKUP(pg_class);
+	int32		inhseqno;
+	bool		inhdetachpending;
+} 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;
+
+DECLARE_UNIQUE_INDEX_PKEY(pg_inherits_relid_seqno_index, 2680, on pg_inherits using btree(inhrelid oid_ops, inhseqno int4_ops));
+#define InheritsRelidSeqnoIndexId  2680
+DECLARE_INDEX(pg_inherits_parent_index, 2187, on pg_inherits using btree(inhparent oid_ops));
+#define InheritsParentIndexId  2187
+
+
+extern List *find_inheritance_children(Oid parentrelId, LOCKMODE lockmode);
+extern List *find_inheritance_children_extended(Oid parentrelId, bool omit_detached,
+												LOCKMODE lockmode, bool *detached_exist, TransactionId *detached_xmin);
+
+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, bool allow_detached,
+								const char *childname);
+extern bool PartitionHasPendingDetach(Oid partoid);
+
+#endif							/* PG_INHERITS_H */