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Add DOMAIN check constraints.

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Rod Taylor
This commit is contained in:
Bruce Momjian
2002-11-15 02:50:21 +00:00
parent 2986aa6a66
commit 6b603e67dc
29 changed files with 641 additions and 147 deletions
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56
src/backend/parser/parse_coerce.c
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@ -8,13 +8,18 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_coerce.c,v 2.85 2002/10/24 22:09:00 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_coerce.c,v 2.86 2002/11/15 02:50:09 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "access/genam.h"
#include "access/heapam.h"
#include "catalog/catname.h"
#include "catalog/indexing.h"
#include "catalog/pg_cast.h"
#include "catalog/pg_constraint.h"
#include "catalog/pg_proc.h"
#include "nodes/makefuncs.h"
#include "optimizer/clauses.h"
@ -405,8 +410,14 @@ coerce_type_constraints(Node *arg, Oid typeId, CoercionForm cformat)
for (;;)
{
HeapTuple tup;
HeapTuple conTup;
Form_pg_type typTup;
ScanKeyData key[1];
int nkeys = 0;
SysScanDesc scan;
Relation conRel;
tup = SearchSysCache(TYPEOID,
ObjectIdGetDatum(typeId),
0, 0, 0);
@ -419,7 +430,45 @@ coerce_type_constraints(Node *arg, Oid typeId, CoercionForm cformat)
if (typTup->typnotnull && notNull == NULL)
notNull = pstrdup(NameStr(typTup->typname));
/* TODO: Add CHECK Constraints to domains */
/* Add CHECK Constraints to domains */
conRel = heap_openr(ConstraintRelationName, RowShareLock);
ScanKeyEntryInitialize(&key[nkeys++], 0x0,
Anum_pg_constraint_contypid, F_OIDEQ,
ObjectIdGetDatum(typeId));
scan = systable_beginscan(conRel, ConstraintTypidIndex, true,
SnapshotNow, nkeys, key);
while (HeapTupleIsValid(conTup = systable_getnext(scan)))
{
Datum val;
bool isNull;
ConstraintTest *r = makeNode(ConstraintTest);
Form_pg_constraint c = (Form_pg_constraint) GETSTRUCT(conTup);
/* Not expecting conbin to be NULL, but we'll test for it anyway */
val = fastgetattr(conTup,
Anum_pg_constraint_conbin,
conRel->rd_att, &isNull);
if (isNull)
elog(ERROR, "coerce_type_constraints: domain %s constraint %s has NULL conbin",
NameStr(typTup->typname), NameStr(c->conname));
r->arg = arg;
r->testtype = CONSTR_TEST_CHECK;
r->name = NameStr(c->conname);
r->domname = NameStr(typTup->typname);
r->check_expr = stringToNode(MemoryContextStrdup(CacheMemoryContext,
DatumGetCString(DirectFunctionCall1(textout,
val))));
arg = (Node *) r;
}
systable_endscan(scan);
heap_close(conRel, RowShareLock);
if (typTup->typtype != 'd')
{
@ -452,7 +501,8 @@ coerce_type_constraints(Node *arg, Oid typeId, CoercionForm cformat)
r->arg = arg;
r->testtype = CONSTR_TEST_NOTNULL;
r->name = notNull;
r->name = "NOT NULL";
r->domname = notNull;
r->check_expr = NULL;
arg = (Node *) r;