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NOT NULL implementation (submitted by Robson Paniago de Miranda).

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This commit is contained in:
Vadim B. Mikheev
1997-08-19 04:46:15 +00:00
parent b99c63cfc0
commit b992e200b8
16 changed files with 453 additions and 337 deletions
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25
src/backend/utils/cache/relcache.c vendored
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.13 1997/08/18 20:53:48 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.14 1997/08/19 04:44:21 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -506,7 +506,7 @@ build_tupdesc_seq(RelationBuildDescInfo buildinfo,
HeapScanDesc pg_attribute_scan;
ScanKeyData key;
int need;
/* ----------------
* form a scan key
* ----------------
@ -529,6 +529,10 @@ build_tupdesc_seq(RelationBuildDescInfo buildinfo,
* ----------------
*/
need = natts;
if (!relation->rd_att->constr)
relation->rd_att->constr = (AttrConstr *) palloc(sizeof(struct attrConstr));
relation->rd_att->constr->has_not_null = false;
pg_attribute_tuple = heap_getnext(pg_attribute_scan, 0, (Buffer *) NULL);
while (HeapTupleIsValid(pg_attribute_tuple) && need > 0) {
attp = (AttributeTupleForm) GETSTRUCT(pg_attribute_tuple);
@ -540,6 +544,11 @@ build_tupdesc_seq(RelationBuildDescInfo buildinfo,
memmove((char *) (relation->rd_att->attrs[attp->attnum - 1]),
(char *) attp,
ATTRIBUTE_TUPLE_SIZE);
/* Update if this attribute have a constraint */
if (attp->attnotnull)
relation->rd_att->constr->has_not_null = true;
need--;
}
pg_attribute_tuple = heap_getnext(pg_attribute_scan,
@ -567,6 +576,10 @@ build_tupdesc_ind(RelationBuildDescInfo buildinfo,
Relation attrel;
HeapTuple atttup;
int i;
if (!relation->rd_att->constr)
relation->rd_att->constr = (AttrConstr *) palloc(sizeof(struct attrConstr));
relation->rd_att->constr->has_not_null = false;
attrel = heap_openr(AttributeRelationName);
@ -585,6 +598,10 @@ build_tupdesc_ind(RelationBuildDescInfo buildinfo,
memmove((char *) (relation->rd_att->attrs[i - 1]),
(char *) attp,
ATTRIBUTE_TUPLE_SIZE);
/* Update if this attribute have a constraint */
if (attp->attnotnull)
relation->rd_att->constr->has_not_null = true;
}
heap_close(attrel);
@ -1229,7 +1246,9 @@ RelationFlushRelation(Relation *relationPtr,
for (i = 0; i < relation->rd_rel->relnatts; i++, p++)
pfree (*p);
pfree (relation->rd_att->attrs);
pfree (relation->rd_att);
if (relation->rd_att->constr)
pfree (relation->rd_att->constr);
pfree (relation->rd_att);
#if 0
if (relation->rd_rules) {