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Commitd40885c

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+ ExecConstraints()
1 parentfaebf2f commitd40885c

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1 file changed

+133
-43
lines changed

1 file changed

+133
-43
lines changed

‎src/backend/executor/execMain.c‎

Lines changed: 133 additions & 43 deletions
Original file line numberDiff line numberDiff line change
@@ -26,7 +26,7 @@
2626
*
2727
*
2828
* IDENTIFICATION
29-
* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.18 1997/08/2203:12:16 vadim Exp $
29+
* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.19 1997/08/2214:28:20 vadim Exp $
3030
*
3131
*-------------------------------------------------------------------------
3232
*/
@@ -73,8 +73,6 @@ static void ExecDelete(TupleTableSlot *slot, ItemPointer tupleid,
7373
staticvoidExecReplace(TupleTableSlot*slot,ItemPointertupleid,
7474
EState*estate,Query*parseTree);
7575

76-
staticHeapTupleExecAttrDefault (Relationrel,HeapTupletuple);
77-
7876
/* end of local decls */
7977

8078
#ifdefQUERY_LIMIT
@@ -930,29 +928,15 @@ ExecAppend(TupleTableSlot *slot,
930928

931929
if (resultRelationDesc->rd_att->constr )
932930
{
933-
if (resultRelationDesc->rd_att->constr->num_defval>0 )
934-
{
935-
HeapTuplenewtuple;
936-
937-
newtuple=ExecAttrDefault (resultRelationDesc,tuple);
938-
939-
if (newtuple!=tuple )
940-
{
941-
Assert (slot->ttc_shouldFree );
942-
slot->val=tuple=newtuple;
943-
}
944-
}
945-
946-
if (resultRelationDesc->rd_att->constr->has_not_null )
931+
HeapTuplenewtuple;
932+
933+
newtuple=ExecConstraints ("ExecAppend",resultRelationDesc,tuple);
934+
935+
if (newtuple!=tuple )/* modified by DEFAULT */
947936
{
948-
intattrChk;
949-
950-
for (attrChk=1;attrChk <=resultRelationDesc->rd_att->natts;attrChk++)
951-
{
952-
if (resultRelationDesc->rd_att->attrs[attrChk-1]->attnotnull&&heap_attisnull(tuple,attrChk))
953-
elog(WARN,"ExecAppend: Fail to add null value in not null attribute %s",
954-
resultRelationDesc->rd_att->attrs[attrChk-1]->attname.data);
955-
}
937+
Assert (slot->ttc_shouldFree );
938+
pfree (tuple);
939+
slot->val=tuple=newtuple;
956940
}
957941
}
958942

@@ -1081,15 +1065,19 @@ ExecReplace(TupleTableSlot *slot,
10811065
* ----------------
10821066
*/
10831067

1084-
if (resultRelationDesc->rd_att->constr&&resultRelationDesc->rd_att->constr->has_not_null)
1085-
{
1086-
intattrChk;
1087-
for (attrChk=1;attrChk <=resultRelationDesc->rd_att->natts;attrChk++) {
1088-
if (resultRelationDesc->rd_att->attrs[attrChk-1]->attnotnull&&heap_attisnull(tuple,attrChk))
1089-
elog(WARN,"ExecReplace: Fail to update null value in not null attribute %s",
1090-
resultRelationDesc->rd_att->attrs[attrChk-1]->attname.data);
1091-
}
1092-
}
1068+
if (resultRelationDesc->rd_att->constr )
1069+
{
1070+
HeapTuplenewtuple;
1071+
1072+
newtuple=ExecConstraints ("ExecReplace",resultRelationDesc,tuple);
1073+
1074+
if (newtuple!=tuple )/* modified by DEFAULT */
1075+
{
1076+
Assert (slot->ttc_shouldFree );
1077+
pfree (tuple);
1078+
slot->val=tuple=newtuple;
1079+
}
1080+
}
10931081

10941082
/* ----------------
10951083
*replace the heap tuple
@@ -1140,7 +1128,8 @@ ExecAttrDefault (Relation rel, HeapTuple tuple)
11401128
{
11411129
intndef=rel->rd_att->constr->num_defval;
11421130
AttrDefault*attrdef=rel->rd_att->constr->defval;
1143-
ExprContext*econtext=makeNode(ExprContext);
1131+
ExprContext*econtext=makeNode (ExprContext);
1132+
HeapTuplenewtuple;
11441133
Node*expr;
11451134
boolisnull;
11461135
boolisdone;
@@ -1150,21 +1139,23 @@ ExecAttrDefault (Relation rel, HeapTuple tuple)
11501139
char*repl=NULL;
11511140
inti;
11521141

1142+
econtext->ecxt_scantuple=NULL;/* scan tuple slot */
1143+
econtext->ecxt_innertuple=NULL;/* inner tuple slot */
1144+
econtext->ecxt_outertuple=NULL;/* outer tuple slot */
1145+
econtext->ecxt_relation=NULL;/* relation */
1146+
econtext->ecxt_relid=0;/* relid */
1147+
econtext->ecxt_param_list_info=NULL;/* param list info */
1148+
econtext->ecxt_range_table=NULL;/* range table */
11531149
for (i=0;i<ndef;i++)
11541150
{
11551151
if ( !heap_attisnull (tuple,attrdef[i].adnum) )
11561152
continue;
11571153
expr= (Node*)stringToNode (attrdef[i].adbin);
1158-
econtext->ecxt_scantuple=NULL;/* scan tuple slot */
1159-
econtext->ecxt_innertuple=NULL;/* inner tuple slot */
1160-
econtext->ecxt_outertuple=NULL;/* outer tuple slot */
1161-
econtext->ecxt_relation=NULL;/* relation */
1162-
econtext->ecxt_relid=0;/* relid */
1163-
econtext->ecxt_param_list_info=NULL;/* param list info */
1164-
econtext->ecxt_range_table=NULL;/* range table */
11651154

11661155
val=ExecEvalExpr (expr,econtext,&isnull,&isdone);
11671156

1157+
pfree (expr);
1158+
11681159
if (isnull )
11691160
continue;
11701161

@@ -1182,9 +1173,108 @@ ExecAttrDefault (Relation rel, HeapTuple tuple)
11821173

11831174
}
11841175

1176+
pfree (econtext);
1177+
11851178
if (repl==NULL )
11861179
return (tuple);
11871180

1188-
return (heap_modifytuple (tuple,InvalidBuffer,rel,replValue,replNull,repl));
1181+
newtuple=heap_modifytuple (tuple,InvalidBuffer,rel,replValue,replNull,repl);
1182+
1183+
pfree (repl);
1184+
pfree (replNull);
1185+
pfree (replValue);
1186+
1187+
return (newtuple);
1188+
1189+
}
1190+
1191+
staticchar*
1192+
ExecRelCheck (Relationrel,HeapTupletuple)
1193+
{
1194+
intncheck=rel->rd_att->constr->num_check;
1195+
ConstrCheck*check=rel->rd_att->constr->check;
1196+
ExprContext*econtext=makeNode (ExprContext);
1197+
TupleTableSlot*slot=makeNode (TupleTableSlot);
1198+
RangeTblEntry*rte=makeNode (RangeTblEntry);
1199+
List*rtlist;
1200+
List*qual;
1201+
boolres;
1202+
inti;
1203+
1204+
slot->val=tuple;
1205+
slot->ttc_shouldFree= false;
1206+
slot->ttc_descIsNew= true;
1207+
slot->ttc_tupleDescriptor=rel->rd_att;
1208+
slot->ttc_buffer=InvalidBuffer;
1209+
slot->ttc_whichplan=-1;
1210+
rte->relname=nameout (&(rel->rd_rel->relname));
1211+
rte->timeRange=NULL;
1212+
rte->refname=rte->relname;
1213+
rte->relid=rel->rd_id;
1214+
rte->inh= false;
1215+
rte->archive= false;
1216+
rte->inFromCl= true;
1217+
rte->timeQual=NULL;
1218+
rtlist=lcons (rte,NIL);
1219+
econtext->ecxt_scantuple=slot;/* scan tuple slot */
1220+
econtext->ecxt_innertuple=NULL;/* inner tuple slot */
1221+
econtext->ecxt_outertuple=NULL;/* outer tuple slot */
1222+
econtext->ecxt_relation=rel;/* relation */
1223+
econtext->ecxt_relid=0;/* relid */
1224+
econtext->ecxt_param_list_info=NULL;/* param list info */
1225+
econtext->ecxt_range_table=rtlist;/* range table */
1226+
1227+
for (i=0;i<ncheck;i++)
1228+
{
1229+
qual= (List*)stringToNode (check[i].ccbin);
1230+
1231+
res=ExecQual (qual,econtext);
1232+
1233+
pfree (qual);
1234+
1235+
if ( !res )
1236+
return (check[i].ccname);
1237+
}
1238+
1239+
pfree (slot);
1240+
pfree (rte->relname);
1241+
pfree (rte);
1242+
pfree (rtlist);
1243+
pfree (econtext);
1244+
1245+
return ((char*)NULL);
1246+
1247+
}
1248+
1249+
HeapTuple
1250+
ExecConstraints (char*caller,Relationrel,HeapTupletuple)
1251+
{
1252+
HeapTuplenewtuple=tuple;
1253+
1254+
Assert (rel->rd_att->constr );
11891255

1256+
if (rel->rd_att->constr->num_defval>0 )
1257+
newtuple=tuple=ExecAttrDefault (rel,tuple);
1258+
1259+
if (rel->rd_att->constr->has_not_null )
1260+
{
1261+
intattrChk;
1262+
1263+
for (attrChk=1;attrChk <=rel->rd_att->natts;attrChk++)
1264+
{
1265+
if (rel->rd_att->attrs[attrChk-1]->attnotnull&&heap_attisnull (tuple,attrChk))
1266+
elog(WARN,"%s: Fail to add null value in not null attribute %s",
1267+
caller,rel->rd_att->attrs[attrChk-1]->attname.data);
1268+
}
1269+
}
1270+
1271+
if (rel->rd_att->constr->num_check>0 )
1272+
{
1273+
char*failed;
1274+
1275+
if ( (failed=ExecRelCheck (rel,tuple) )!=NULL )
1276+
elog(WARN,"%s: rejected due to CHECK constraint %s",caller,failed);
1277+
}
1278+
1279+
return (newtuple);
11901280
}

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