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Add a back-link from IndexOptInfo structs to their parent RelOptInfo

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structs.  There are many places in the planner where we were passing
both a rel and an index to subroutines, and now need only pass the
index struct.  Notationally simpler, and perhaps a tad faster.
This commit is contained in:
Tom Lane
2005-03-27 06:29:49 +00:00
parent febc9a613c
commit 926e8a00d3
11 changed files with 95 additions and 141 deletions
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29
src/backend/optimizer/plan/createplan.c
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@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.176 2005/03/10 23:21:22 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.177 2005/03/27 06:29:38 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -65,16 +65,13 @@ static void fix_indxqual_references(List *indexquals, IndexPath *index_path,
List **indxstrategy,
List **indxsubtype,
List **indxlossy);
static void fix_indxqual_sublist(List *indexqual,
Relids baserelids, int baserelid,
IndexOptInfo *index,
static void fix_indxqual_sublist(List *indexqual, IndexOptInfo *index,
List **fixed_quals,
List **strategy,
List **subtype,
List **lossy);
static Node *fix_indxqual_operand(Node *node, int baserelid,
IndexOptInfo *index,
Oid *opclass);
static Node *fix_indxqual_operand(Node *node, IndexOptInfo *index,
Oid *opclass);
static List *get_switched_clauses(List *clauses, Relids outerrelids);
static List *order_qual_clauses(Query *root, List *clauses);
static void copy_path_costsize(Plan *dest, Path *src);
@ -1179,8 +1176,6 @@ fix_indxqual_references(List *indexquals, IndexPath *index_path,
List **indxsubtype,
List **indxlossy)
{
Relids baserelids = index_path->path.parent->relids;
int baserelid = index_path->path.parent->relid;
List *index_info = index_path->indexinfo;
ListCell *iq,
*ii;
@ -1198,7 +1193,7 @@ fix_indxqual_references(List *indexquals, IndexPath *index_path,
List *subtype;
List *lossy;
fix_indxqual_sublist(indexqual, baserelids, baserelid, index,
fix_indxqual_sublist(indexqual, index,
&fixed_qual, &strategy, &subtype, &lossy);
*fixed_indexquals = lappend(*fixed_indexquals, fixed_qual);
*indxstrategy = lappend(*indxstrategy, strategy);
@ -1222,9 +1217,7 @@ fix_indxqual_references(List *indexquals, IndexPath *index_path,
* the integer list of lossiness flags (1/0)
*/
static void
fix_indxqual_sublist(List *indexqual,
Relids baserelids, int baserelid,
IndexOptInfo *index,
fix_indxqual_sublist(List *indexqual, IndexOptInfo *index,
List **fixed_quals,
List **strategy,
List **subtype,
@ -1265,7 +1258,7 @@ fix_indxqual_sublist(List *indexqual,
* the clause. The indexkey should be the side that refers to
* (only) the base relation.
*/
if (!bms_equal(rinfo->left_relids, baserelids))
if (!bms_equal(rinfo->left_relids, index->rel->relids))
CommuteClause(newclause);
/*
@ -1273,7 +1266,6 @@ fix_indxqual_sublist(List *indexqual,
* indexkey operand as needed, and get the index opclass.
*/
linitial(newclause->args) = fix_indxqual_operand(linitial(newclause->args),
baserelid,
index,
&opclass);
@ -1295,8 +1287,7 @@ fix_indxqual_sublist(List *indexqual,
}
static Node *
fix_indxqual_operand(Node *node, int baserelid, IndexOptInfo *index,
Oid *opclass)
fix_indxqual_operand(Node *node, IndexOptInfo *index, Oid *opclass)
{
/*
* We represent index keys by Var nodes having the varno of the base
@ -1316,7 +1307,7 @@ fix_indxqual_operand(Node *node, int baserelid, IndexOptInfo *index,
node = (Node *) ((RelabelType *) node)->arg;
if (IsA(node, Var) &&
((Var *) node)->varno == baserelid)
((Var *) node)->varno == index->rel->relid)
{
/* Try to match against simple index columns */
int varatt = ((Var *) node)->varattno;
@ -1353,7 +1344,7 @@ fix_indxqual_operand(Node *node, int baserelid, IndexOptInfo *index,
if (equal(node, indexkey))
{
/* Found a match */
result = makeVar(baserelid, pos + 1,
result = makeVar(index->rel->relid, pos + 1,
exprType(lfirst(indexpr_item)), -1,
0);
/* return the correct opclass, too */