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Phase 3 of read-only-plans project: ExecInitExpr now builds expression

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execution state trees, and ExecEvalExpr takes an expression state tree
not an expression plan tree.  The plan tree is now read-only as far as
the executor is concerned.  Next step is to begin actually exploiting
this property.
This commit is contained in:
Tom Lane
2002-12-13 19:46:01 +00:00
parent 77b7a740f9
commit 3a4f7dde16
49 changed files with 993 additions and 815 deletions
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9
src/backend/commands/tablecmds.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/tablecmds.c,v 1.59 2002/12/12 20:35:12 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/tablecmds.c,v 1.60 2002/12/13 19:45:51 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -2718,6 +2718,7 @@ AlterTableAddCheckConstraint(Relation rel, Constraint *constr)
HeapTuple tuple;
RangeTblEntry *rte;
List *qual;
List *qualstate;
Node *expr;
/*
@@ -2769,6 +2770,9 @@ AlterTableAddCheckConstraint(Relation rel, Constraint *constr)
qual = makeList1(expr);
/* build execution state for qual */
qualstate = (List *) ExecInitExpr((Expr *) qual, NULL);
/* Make tuple slot to hold tuples */
slot = MakeTupleTableSlot();
ExecSetSlotDescriptor(slot, RelationGetDescr(rel), false);
@@ -2783,7 +2787,7 @@ AlterTableAddCheckConstraint(Relation rel, Constraint *constr)
while ((tuple = heap_getnext(scan, ForwardScanDirection)) != NULL)
{
ExecStoreTuple(tuple, slot, InvalidBuffer, false);
if (!ExecQual(qual, econtext, true))
if (!ExecQual(qualstate, econtext, true))
{
successful = false;
break;
@@ -3820,6 +3824,7 @@ AlterTableCreateToastTable(Oid relOid, bool silent)
indexInfo->ii_KeyAttrNumbers[0] = 1;
indexInfo->ii_KeyAttrNumbers[1] = 2;
indexInfo->ii_Predicate = NIL;
indexInfo->ii_PredicateState = NIL;
indexInfo->ii_FuncOid = InvalidOid;
indexInfo->ii_Unique = true;