database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-08-27 07:42:10 +03:00
Code Activity

Convert oidvector and int2vector into variable-length arrays. This

Browse Source 
change saves a great deal of space in pg_proc and its primary index,
and it eliminates the former requirement that INDEX_MAX_KEYS and
FUNC_MAX_ARGS have the same value.  INDEX_MAX_KEYS is still embedded
in the on-disk representation (because it affects index tuple header
size), but FUNC_MAX_ARGS is not.  I believe it would now be possible
to increase FUNC_MAX_ARGS at little cost, but haven't experimented yet.
There are still a lot of vestigial references to FUNC_MAX_ARGS, which
I will clean up in a separate pass.  However, getting rid of it
altogether would require changing the FunctionCallInfoData struct,
and I'm not sure I want to buy into that.
This commit is contained in:
Tom Lane
2005-03-29 00:17:27 +00:00
parent 119191609c
commit 70c9763d48
61 changed files with 819 additions and 581 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
src/backend/commands/tablecmds.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.151 2005/03/25 18:04:34 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.152 2005/03/29 00:16:57 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1419,7 +1419,7 @@ renameatt(Oid myrelid,
for (i = 0; i < indexform->indnatts; i++)
{
if (attnum != indexform->indkey[i])
if (attnum != indexform->indkey.values[i])
continue;
/*
@@ -1676,9 +1676,10 @@ update_ri_trigger_args(Oid relid,
* line; so does trigger.c ...
*/
tgnargs = pg_trigger->tgnargs;
val = (bytea *) fastgetattr(tuple,
Anum_pg_trigger_tgargs,
tgrel->rd_att, &isnull);
val = (bytea *)
DatumGetPointer(fastgetattr(tuple,
Anum_pg_trigger_tgargs,
tgrel->rd_att, &isnull));
if (isnull || tgnargs < RI_FIRST_ATTNAME_ARGNO ||
tgnargs > RI_MAX_ARGUMENTS)
{
@@ -3202,7 +3203,7 @@ ATExecDropNotNull(Relation rel, const char *colName)
*/
for (i = 0; i < indexStruct->indnatts; i++)
{
if (indexStruct->indkey[i] == attnum)
if (indexStruct->indkey.values[i] == attnum)
ereport(ERROR,
(errcode(ERRCODE_INVALID_TABLE_DEFINITION),
errmsg("column \"%s\" is in a primary key",
@@ -4096,6 +4097,9 @@ transformFkeyGetPrimaryKey(Relation pkrel, Oid *indexOid,
ListCell *indexoidscan;
HeapTuple indexTuple = NULL;
Form_pg_index indexStruct = NULL;
Datum indclassDatum;
bool isnull;
oidvector *indclass;
int i;
/*
@@ -4135,6 +4139,12 @@ transformFkeyGetPrimaryKey(Relation pkrel, Oid *indexOid,
errmsg("there is no primary key for referenced table \"%s\"",
RelationGetRelationName(pkrel))));
/* Must get indclass the hard way */
indclassDatum = SysCacheGetAttr(INDEXRELID, indexTuple,
Anum_pg_index_indclass, &isnull);
Assert(!isnull);
indclass = (oidvector *) DatumGetPointer(indclassDatum);
/*
* Now build the list of PK attributes from the indkey definition (we
* assume a primary key cannot have expressional elements)
@@ -4142,11 +4152,11 @@ transformFkeyGetPrimaryKey(Relation pkrel, Oid *indexOid,
*attnamelist = NIL;
for (i = 0; i < indexStruct->indnatts; i++)
{
int pkattno = indexStruct->indkey[i];
int pkattno = indexStruct->indkey.values[i];
attnums[i] = pkattno;
atttypids[i] = attnumTypeId(pkrel, pkattno);
opclasses[i] = indexStruct->indclass[i];
opclasses[i] = indclass->values[i];
*attnamelist = lappend(*attnamelist,
makeString(pstrdup(NameStr(*attnumAttName(pkrel, pkattno)))));
}
@@ -4205,6 +4215,16 @@ transformFkeyCheckAttrs(Relation pkrel,
heap_attisnull(indexTuple, Anum_pg_index_indpred) &&
heap_attisnull(indexTuple, Anum_pg_index_indexprs))
{
/* Must get indclass the hard way */
Datum indclassDatum;
bool isnull;
oidvector *indclass;
indclassDatum = SysCacheGetAttr(INDEXRELID, indexTuple,
Anum_pg_index_indclass, &isnull);
Assert(!isnull);
indclass = (oidvector *) DatumGetPointer(indclassDatum);
/*
* The given attnum list may match the index columns in any
* order. Check that each list is a subset of the other.
@@ -4214,7 +4234,7 @@ transformFkeyCheckAttrs(Relation pkrel,
found = false;
for (j = 0; j < numattrs; j++)
{
if (attnums[i] == indexStruct->indkey[j])
if (attnums[i] == indexStruct->indkey.values[j])
{
found = true;
break;
@@ -4230,9 +4250,9 @@ transformFkeyCheckAttrs(Relation pkrel,
found = false;
for (j = 0; j < numattrs; j++)
{
if (attnums[j] == indexStruct->indkey[i])
if (attnums[j] == indexStruct->indkey.values[i])
{
opclasses[j] = indexStruct->indclass[i];
opclasses[j] = indclass->values[i];
found = true;
break;
}