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Inheritance overhaul by Chris Bitmead <chris@bitmead.com>

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This commit is contained in:
Bruce Momjian
2000-06-09 01:44:34 +00:00
parent fb070464c1
commit 8c1d09d591
32 changed files with 484 additions and 204 deletions
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46
src/backend/commands/creatinh.c
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@ -8,7 +8,11 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/creatinh.c,v 1.58 2000/05/30 00:49:43 momjian Exp $
<<<<<<< creatinh.c
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/creatinh.c,v 1.59 2000/06/09 01:44:03 momjian Exp $
=======
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/creatinh.c,v 1.59 2000/06/09 01:44:03 momjian Exp $
>>>>>>> 1.58
*
*-------------------------------------------------------------------------
*/
@ -34,6 +38,9 @@ static bool checkAttrExists(const char *attributeName,
const char *attributeType, List *schema);
static List *MergeAttributes(List *schema, List *supers, List **supconstr);
static void StoreCatalogInheritance(Oid relationId, List *supers);
static void
setRelhassubclassInRelation(Oid relationId, bool relhassubclass);
/* ----------------------------------------------------------------
* DefineRelation
@ -326,6 +333,7 @@ MergeAttributes(List *schema, List *supers, List **supconstr)
TupleConstr *constr;
relation = heap_openr(name, AccessShareLock);
setRelhassubclassInRelation(relation->rd_id, true);
tupleDesc = RelationGetDescr(relation);
constr = tupleDesc->constr;
@ -660,3 +668,39 @@ checkAttrExists(const char *attributeName, const char *attributeType, List *sche
}
return false;
}
static void
setRelhassubclassInRelation(Oid relationId, bool relhassubclass)
{
Relation relationRelation;
HeapTuple tuple;
Relation idescs[Num_pg_class_indices];
/*
* Lock a relation given its Oid. Go to the RelationRelation (i.e.
* pg_relation), find the appropriate tuple, and add the specified
* lock to it.
*/
relationRelation = heap_openr(RelationRelationName, RowExclusiveLock);
tuple = SearchSysCacheTuple(RELOID,
ObjectIdGetDatum(relationId),
0, 0, 0)
;
Assert(HeapTupleIsValid(tuple));
((Form_pg_class) GETSTRUCT(tuple))->relhassubclass = relhassubclass;
heap_update(relationRelation, &tuple->t_self, tuple, NULL);
/* keep the catalog indices up to date */
CatalogOpenIndices(Num_pg_class_indices, Name_pg_class_indices, idescs);
CatalogIndexInsert(idescs, Num_pg_class_indices, relationRelation, tuple
);
CatalogCloseIndices(Num_pg_class_indices, idescs);
heap_close(relationRelation, RowExclusiveLock);
}