diff options
| author | Vadim B. Mikheev <vadim4o@yahoo.com> | 1997-08-19 04:46:15 +0000 |
|---|---|---|
| committer | Vadim B. Mikheev <vadim4o@yahoo.com> | 1997-08-19 04:46:15 +0000 |
| commit | b992e200b8872ecb6652ec85111995f8d4c5aee0 (patch) | |
| tree | 52ce3eed9d36e779fe3fa729c12757b13a521b56 /src/backend/utils/cache/relcache.c | |
| parent | b99c63cfc029cc0552e98f652d1734aec1124a5b (diff) | |
| download | postgresql-b992e200b8872ecb6652ec85111995f8d4c5aee0.tar.gz postgresql-b992e200b8872ecb6652ec85111995f8d4c5aee0.zip | |
NOT NULL implementation (submitted by Robson Paniago de Miranda).
Diffstat (limited to 'src/backend/utils/cache/relcache.c')
| -rw-r--r-- | src/backend/utils/cache/relcache.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/src/backend/utils/cache/relcache.c b/src/backend/utils/cache/relcache.c index d7bb7e79faf..585d82fc126 100644 --- a/src/backend/utils/cache/relcache.c +++ b/src/backend/utils/cache/relcache.c @@ -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) { |