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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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8
src/backend/nodes/outfuncs.c
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@@ -5,7 +5,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.144 2001/08/16 20:38:53 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.145 2001/08/21 16:36:02 tgl Exp $
*
* NOTES
* Every (plan) node in POSTGRES has an associated "out" routine which
@@ -133,16 +133,10 @@ _outIndexStmt(StringInfo str, IndexStmt *node)
_outToken(str, node->accessMethod);
appendStringInfo(str, " :indexParams ");
_outNode(str, node->indexParams);
appendStringInfo(str, " :withClause ");
_outNode(str, node->withClause);
appendStringInfo(str, " :whereClause ");
_outNode(str, node->whereClause);
appendStringInfo(str, " :rangetable ");
_outNode(str, node->rangetable);
appendStringInfo(str, " :unique %s :primary %s ",
booltostr(node->unique),
booltostr(node->primary));