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Restructure pg_opclass, pg_amop, and pg_amproc per previous discussions in

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pgsql-hackers.  pg_opclass now has a row for each opclass supported by each
index AM, not a row for each opclass name.  This allows pg_opclass to show
directly whether an AM supports an opclass, and furthermore makes it possible
to store additional information about an opclass that might be AM-dependent.
pg_opclass and pg_amop now store "lossy" and "haskeytype" information that we
previously expected the user to remember to provide in CREATE INDEX commands.
Lossiness is no longer an index-level property, but is associated with the
use of a particular operator in a particular index opclass.

Along the way, IndexSupportInitialize now uses the syscaches to retrieve
pg_amop and pg_amproc entries.  I find this reduces backend launch time by
about ten percent, at the cost of a couple more special cases in catcache.c's
IndexScanOK.

Initial work by Oleg Bartunov and Teodor Sigaev, further hacking by Tom Lane.

initdb forced.
This commit is contained in:
Tom Lane
2001-08-21 16:36:06 +00:00
parent c2d1566912
commit f933766ba7
60 changed files with 1918 additions and 1929 deletions
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39
src/backend/utils/cache/syscache.c vendored
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/syscache.c,v 1.64 2001/08/10 18:57:37 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/syscache.c,v 1.65 2001/08/21 16:36:05 tgl Exp $
*
* NOTES
* These routines allow the parser/planner/executor to perform
@ -27,6 +27,7 @@
#include "catalog/indexing.h"
#include "catalog/pg_aggregate.h"
#include "catalog/pg_amop.h"
#include "catalog/pg_amproc.h"
#include "catalog/pg_group.h"
#include "catalog/pg_index.h"
#include "catalog/pg_inherits.h"
@ -113,23 +114,33 @@ static struct cachedesc cacheinfo[] = {
0
}},
{AccessMethodOperatorRelationName, /* AMOPOPID */
AccessMethodOpidIndex,
AccessMethodOperatorIndex,
0,
3,
2,
{
Anum_pg_amop_amopclaid,
Anum_pg_amop_amopopr,
Anum_pg_amop_amopid,
0,
0
}},
{AccessMethodOperatorRelationName, /* AMOPSTRATEGY */
AccessMethodStrategyIndex,
0,
3,
2,
{
Anum_pg_amop_amopid,
Anum_pg_amop_amopclaid,
Anum_pg_amop_amopstrategy,
0,
0
}},
{AccessMethodProcedureRelationName, /* AMPROCNUM */
AccessMethodProcedureIndex,
0,
2,
{
Anum_pg_amproc_amopclaid,
Anum_pg_amproc_amprocnum,
0,
0
}},
{AttributeRelationName, /* ATTNAME */
@ -152,22 +163,22 @@ static struct cachedesc cacheinfo[] = {
0,
0
}},
{OperatorClassRelationName, /* CLADEFTYPE */
OpclassDeftypeIndex,
{OperatorClassRelationName, /* CLAAMNAME */
OpclassAmNameIndex,
0,
1,
2,
{
Anum_pg_opclass_opcdeftype,
0,
Anum_pg_opclass_opcamid,
Anum_pg_opclass_opcname,
0,
0
}},
{OperatorClassRelationName, /* CLANAME */
OpclassNameIndex,
{OperatorClassRelationName, /* CLAOID */
OpclassOidIndex,
0,
1,
{
Anum_pg_opclass_opcname,
ObjectIdAttributeNumber,
0,
0,
0