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Minor cleanup of indxpath.c. 

Eliminate some superfluous notational complexity around
match_clause_to_indexcol(), and rip out the DoneMatchingIndexKeys
crock.
This commit is contained in:
Robert Haas 2010-11-20 13:57:27 -05:00
parent d1d8462d99
commit 99bc012d51
1 changed files with 8 additions and 27 deletions
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35
src/backend/optimizer/path/indxpath.c
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@ -37,11 +37,6 @@
#include "utils/selfuncs.h"
/*
* DoneMatchingIndexKeys() - MACRO
*/
#define DoneMatchingIndexKeys(families) (families[0] == InvalidOid)
#define IsBooleanOpfamily(opfamily) \
((opfamily) == BOOL_BTREE_FAM_OID || (opfamily) == BOOL_HASH_FAM_OID)
@ -83,7 +78,7 @@ static PathClauseUsage *classify_index_clause_usage(Path *path,
static void find_indexpath_quals(Path *bitmapqual, List **quals, List **preds);
static int find_list_position(Node *node, List **nodelist);
static bool match_clause_to_indexcol(IndexOptInfo *index,
int indexcol, Oid opfamily,
int indexcol,
RestrictInfo *rinfo,
Relids outer_relids,
SaOpControl saop_control);
@ -1053,7 +1048,6 @@ group_clauses_by_indexkey(IndexOptInfo *index,
List *clausegroup_list = NIL;
bool found_outer_clause = false;
int indexcol = 0;
Oid *families = index->opfamily;
*found_clause = false; /* default result */
@ -1062,7 +1056,6 @@ group_clauses_by_indexkey(IndexOptInfo *index,
do
{
Oid curFamily = families[0];
List *clausegroup = NIL;
ListCell *l;
@ -1074,7 +1067,6 @@ group_clauses_by_indexkey(IndexOptInfo *index,
Assert(IsA(rinfo, RestrictInfo));
if (match_clause_to_indexcol(index,
indexcol,
curFamily,
rinfo,
outer_relids,
saop_control))
@ -1094,7 +1086,6 @@ group_clauses_by_indexkey(IndexOptInfo *index,
Assert(IsA(rinfo, RestrictInfo));
if (match_clause_to_indexcol(index,
indexcol,
curFamily,
rinfo,
outer_relids,
saop_control))
@ -1113,9 +1104,8 @@ group_clauses_by_indexkey(IndexOptInfo *index,
clausegroup_list = lappend(clausegroup_list, clausegroup);
indexcol++;
families++;
} while (!DoneMatchingIndexKeys(families));
} while (indexcol < index->ncolumns);
if (!*found_clause && !found_outer_clause)
return NIL; /* no indexable clauses anywhere */
@ -1185,7 +1175,6 @@ group_clauses_by_indexkey(IndexOptInfo *index,
static bool
match_clause_to_indexcol(IndexOptInfo *index,
int indexcol,
Oid opfamily,
RestrictInfo *rinfo,
Relids outer_relids,
SaOpControl saop_control)
@ -1196,6 +1185,7 @@ match_clause_to_indexcol(IndexOptInfo *index,
Relids left_relids;
Relids right_relids;
Oid expr_op;
Oid opfamily = index->opfamily[indexcol];
bool plain_op;
/*
@ -1582,23 +1572,18 @@ matches_any_index(RestrictInfo *rinfo, RelOptInfo *rel, Relids outer_relids)
{
IndexOptInfo *index = (IndexOptInfo *) lfirst(l);
int indexcol = 0;
Oid *families = index->opfamily;
do
{
Oid curFamily = families[0];
if (match_clause_to_indexcol(index,
indexcol,
curFamily,
rinfo,
outer_relids,
SAOP_ALLOW))
return true;
indexcol++;
families++;
} while (!DoneMatchingIndexKeys(families));
} while (indexcol < index->ncolumns);
}
return false;
@ -1621,11 +1606,10 @@ eclass_matches_any_index(EquivalenceClass *ec, EquivalenceMember *em,
{
IndexOptInfo *index = (IndexOptInfo *) lfirst(l);
int indexcol = 0;
Oid *families = index->opfamily;
do
{
Oid curFamily = families[0];
Oid curFamily = index->opfamily[indexcol];
/*
* If it's a btree index, we can reject it if its opfamily isn't
@ -1643,8 +1627,7 @@ eclass_matches_any_index(EquivalenceClass *ec, EquivalenceMember *em,
return true;
indexcol++;
families++;
} while (!DoneMatchingIndexKeys(families));
} while (indexcol < index->ncolumns);
}
return false;
@ -2379,7 +2362,6 @@ expand_indexqual_conditions(IndexOptInfo *index, List *clausegroups)
List *resultquals = NIL;
ListCell *clausegroup_item;
int indexcol = 0;
Oid *families = index->opfamily;
if (clausegroups == NIL)
return NIL;
@ -2387,7 +2369,7 @@ expand_indexqual_conditions(IndexOptInfo *index, List *clausegroups)
clausegroup_item = list_head(clausegroups);
do
{
Oid curFamily = families[0];
Oid curFamily = index->opfamily[indexcol];
ListCell *l;
foreach(l, (List *) lfirst(clausegroup_item))
@ -2447,8 +2429,7 @@ expand_indexqual_conditions(IndexOptInfo *index, List *clausegroups)
clausegroup_item = lnext(clausegroup_item);
indexcol++;
families++;
} while (clausegroup_item != NULL && !DoneMatchingIndexKeys(families));
} while (clausegroup_item != NULL && indexcol < index->ncolumns);
Assert(clausegroup_item == NULL); /* else more groups than indexkeys */