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path: root/src/backend/optimizer/prep/prepqual.c
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Diffstat (limited to 'src/backend/optimizer/prep/prepqual.c')
-rw-r--r--src/backend/optimizer/prep/prepqual.c101
1 files changed, 47 insertions, 54 deletions
diff --git a/src/backend/optimizer/prep/prepqual.c b/src/backend/optimizer/prep/prepqual.c
index bb00555f69d..4016ba476de 100644
--- a/src/backend/optimizer/prep/prepqual.c
+++ b/src/backend/optimizer/prep/prepqual.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepqual.c,v 1.33 2002/09/02 02:47:02 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepqual.c,v 1.34 2002/12/12 15:49:32 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -294,7 +294,7 @@ flatten_andors(Expr *qual)
List *out_list = NIL;
List *arg;
- foreach(arg, qual->args)
+ foreach(arg, ((BoolExpr *) qual)->args)
{
Expr *subexpr = flatten_andors((Expr *) lfirst(arg));
@@ -305,7 +305,7 @@ flatten_andors(Expr *qual)
* with any other expr. Otherwise we'd need a listCopy here.
*/
if (and_clause((Node *) subexpr))
- out_list = nconc(out_list, subexpr->args);
+ out_list = nconc(out_list, ((BoolExpr *) subexpr)->args);
else
out_list = lappend(out_list, subexpr);
}
@@ -316,7 +316,7 @@ flatten_andors(Expr *qual)
List *out_list = NIL;
List *arg;
- foreach(arg, qual->args)
+ foreach(arg, ((BoolExpr *) qual)->args)
{
Expr *subexpr = flatten_andors((Expr *) lfirst(arg));
@@ -327,7 +327,7 @@ flatten_andors(Expr *qual)
* with any other expr. Otherwise we'd need a listCopy here.
*/
if (or_clause((Node *) subexpr))
- out_list = nconc(out_list, subexpr->args);
+ out_list = nconc(out_list, ((BoolExpr *) subexpr)->args);
else
out_list = lappend(out_list, subexpr);
}
@@ -335,20 +335,17 @@ flatten_andors(Expr *qual)
}
else if (not_clause((Node *) qual))
return make_notclause(flatten_andors(get_notclausearg(qual)));
- else if (is_opclause((Node *) qual))
+ else if (is_opclause(qual))
{
+ OpExpr *opexpr = (OpExpr *) qual;
Expr *left = (Expr *) get_leftop(qual);
Expr *right = (Expr *) get_rightop(qual);
- if (right)
- return make_clause(qual->opType, qual->oper,
- lcons(flatten_andors(left),
- lcons(flatten_andors(right),
- NIL)));
- else
- return make_clause(qual->opType, qual->oper,
- lcons(flatten_andors(left),
- NIL));
+ return make_opclause(opexpr->opno,
+ opexpr->opresulttype,
+ opexpr->opretset,
+ flatten_andors(left),
+ flatten_andors(right));
}
else
return qual;
@@ -379,7 +376,8 @@ pull_ors(List *orlist)
* we'd need a listCopy here.
*/
if (or_clause((Node *) subexpr))
- out_list = nconc(out_list, pull_ors(subexpr->args));
+ out_list = nconc(out_list,
+ pull_ors(((BoolExpr *) subexpr)->args));
else
out_list = lappend(out_list, subexpr);
}
@@ -410,7 +408,8 @@ pull_ands(List *andlist)
* we'd need a listCopy here.
*/
if (and_clause((Node *) subexpr))
- out_list = nconc(out_list, pull_ands(subexpr->args));
+ out_list = nconc(out_list,
+ pull_ands(((BoolExpr *) subexpr)->args));
else
out_list = lappend(out_list, subexpr);
}
@@ -433,20 +432,17 @@ find_nots(Expr *qual)
#ifdef NOT_USED
/* recursing into operator expressions is probably not worth it. */
- if (is_opclause((Node *) qual))
+ if (is_opclause(qual))
{
+ OpExpr *opexpr = (OpExpr *) qual;
Expr *left = (Expr *) get_leftop(qual);
Expr *right = (Expr *) get_rightop(qual);
- if (right)
- return make_clause(qual->opType, qual->oper,
- lcons(find_nots(left),
- lcons(find_nots(right),
- NIL)));
- else
- return make_clause(qual->opType, qual->oper,
- lcons(find_nots(left),
- NIL));
+ return make_opclause(opexpr->opno,
+ opexpr->opresulttype,
+ opexpr->opretset,
+ find_nots(left),
+ find_nots(right));
}
#endif
if (and_clause((Node *) qual))
@@ -454,7 +450,7 @@ find_nots(Expr *qual)
List *t_list = NIL;
List *temp;
- foreach(temp, qual->args)
+ foreach(temp, ((BoolExpr *) qual)->args)
t_list = lappend(t_list, find_nots(lfirst(temp)));
return make_andclause(pull_ands(t_list));
}
@@ -463,7 +459,7 @@ find_nots(Expr *qual)
List *t_list = NIL;
List *temp;
- foreach(temp, qual->args)
+ foreach(temp, ((BoolExpr *) qual)->args)
t_list = lappend(t_list, find_nots(lfirst(temp)));
return make_orclause(pull_ors(t_list));
}
@@ -492,20 +488,17 @@ push_nots(Expr *qual)
* Otherwise, retain the clause as it is (the 'not' can't be pushed
* down any farther).
*/
- if (is_opclause((Node *) qual))
+ if (is_opclause(qual))
{
- Oper *oper = (Oper *) ((Expr *) qual)->oper;
- Oid negator = get_negator(oper->opno);
+ OpExpr *opexpr = (OpExpr *) qual;
+ Oid negator = get_negator(opexpr->opno);
if (negator)
- {
- Oper *op = (Oper *) makeOper(negator,
- InvalidOid,
- oper->opresulttype,
- oper->opretset);
-
- return make_opclause(op, get_leftop(qual), get_rightop(qual));
- }
+ return make_opclause(negator,
+ opexpr->opresulttype,
+ opexpr->opretset,
+ (Expr *) get_leftop(qual),
+ (Expr *) get_rightop(qual));
else
return make_notclause(qual);
}
@@ -521,7 +514,7 @@ push_nots(Expr *qual)
List *t_list = NIL;
List *temp;
- foreach(temp, qual->args)
+ foreach(temp, ((BoolExpr *) qual)->args)
t_list = lappend(t_list, push_nots(lfirst(temp)));
return make_orclause(pull_ors(t_list));
}
@@ -530,7 +523,7 @@ push_nots(Expr *qual)
List *t_list = NIL;
List *temp;
- foreach(temp, qual->args)
+ foreach(temp, ((BoolExpr *) qual)->args)
t_list = lappend(t_list, push_nots(lfirst(temp)));
return make_andclause(pull_ands(t_list));
}
@@ -576,7 +569,7 @@ find_ors(Expr *qual)
List *andlist = NIL;
List *temp;
- foreach(temp, qual->args)
+ foreach(temp, ((BoolExpr *) qual)->args)
andlist = lappend(andlist, find_ors(lfirst(temp)));
return make_andclause(pull_ands(andlist));
}
@@ -585,7 +578,7 @@ find_ors(Expr *qual)
List *orlist = NIL;
List *temp;
- foreach(temp, qual->args)
+ foreach(temp, ((BoolExpr *) qual)->args)
orlist = lappend(orlist, find_ors(lfirst(temp)));
return or_normalize(pull_ors(orlist));
}
@@ -629,7 +622,7 @@ or_normalize(List *orlist)
if (and_clause((Node *) clause))
{
- int nclauses = length(clause->args);
+ int nclauses = length(((BoolExpr *) clause)->args);
if (nclauses > num_subclauses)
{
@@ -650,7 +643,7 @@ or_normalize(List *orlist)
*/
orlist = lremove(distributable, orlist);
- foreach(temp, distributable->args)
+ foreach(temp, ((BoolExpr *) distributable)->args)
{
Expr *andclause = lfirst(temp);
List *neworlist;
@@ -703,7 +696,7 @@ find_ands(Expr *qual)
List *orlist = NIL;
List *temp;
- foreach(temp, qual->args)
+ foreach(temp, ((BoolExpr *) qual)->args)
orlist = lappend(orlist, find_ands(lfirst(temp)));
return make_orclause(pull_ors(orlist));
}
@@ -712,7 +705,7 @@ find_ands(Expr *qual)
List *andlist = NIL;
List *temp;
- foreach(temp, qual->args)
+ foreach(temp, ((BoolExpr *) qual)->args)
andlist = lappend(andlist, find_ands(lfirst(temp)));
return and_normalize(pull_ands(andlist));
}
@@ -757,7 +750,7 @@ and_normalize(List *andlist)
if (or_clause((Node *) clause))
{
- int nclauses = length(clause->args);
+ int nclauses = length(((BoolExpr *) clause)->args);
if (nclauses > num_subclauses)
{
@@ -778,7 +771,7 @@ and_normalize(List *andlist)
*/
andlist = lremove(distributable, andlist);
- foreach(temp, distributable->args)
+ foreach(temp, ((BoolExpr *) distributable)->args)
{
Expr *orclause = lfirst(temp);
List *newandlist;
@@ -829,7 +822,7 @@ qual_cleanup(Expr *qual)
List *andlist = NIL;
List *temp;
- foreach(temp, qual->args)
+ foreach(temp, ((BoolExpr *) qual)->args)
andlist = lappend(andlist, qual_cleanup(lfirst(temp)));
andlist = remove_duplicates(pull_ands(andlist));
@@ -844,7 +837,7 @@ qual_cleanup(Expr *qual)
List *orlist = NIL;
List *temp;
- foreach(temp, qual->args)
+ foreach(temp, ((BoolExpr *) qual)->args)
orlist = lappend(orlist, qual_cleanup(lfirst(temp)));
orlist = remove_duplicates(pull_ors(orlist));
@@ -910,7 +903,7 @@ count_bool_nodes(Expr *qual,
*nodes = *cnfnodes = 0.0;
*dnfnodes = 1.0; /* DNF nodes will be product of sub-counts */
- foreach(temp, qual->args)
+ foreach(temp, ((BoolExpr *) qual)->args)
{
count_bool_nodes(lfirst(temp),
&subnodes, &subcnfnodes, &subdnfnodes);
@@ -931,7 +924,7 @@ count_bool_nodes(Expr *qual,
*nodes = *dnfnodes = 0.0;
*cnfnodes = 1.0; /* CNF nodes will be product of sub-counts */
- foreach(temp, qual->args)
+ foreach(temp, ((BoolExpr *) qual)->args)
{
count_bool_nodes(lfirst(temp),
&subnodes, &subcnfnodes, &subdnfnodes);
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-22 14:40:55 +0000