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Support toasting of shared system relations, and provide toast tables for

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pg_database, pg_shadow, pg_group, all of which now have potentially-long
fields.  Along the way, get rid of SharedSystemRelationNames list: shared
rels are now identified in their include/pg_catalog/*.h files by a
BKI_SHARED_RELATION macro, while indexes and toast rels inherit sharedness
automatically from their parent table.  Fix some bugs with failure to detoast
pg_group.grolist during ALTER GROUP.
This commit is contained in:
Tom Lane
2002-04-27 21:24:34 +00:00
parent 108871f4fc
commit c06f6a6bc2
27 changed files with 403 additions and 531 deletions
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23
src/backend/utils/cache/relcache.c vendored
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.162 2002/04/19 16:36:08 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.163 2002/04/27 21:24:34 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1319,7 +1319,10 @@ LookupOpclassInfo(Oid operatorClassOid,
* The relation descriptor is built just from the supplied parameters,
* without actually looking at any system table entries. We cheat
* quite a lot since we only need to work for a few basic system
* catalogs...
* catalogs.
*
* formrdesc is currently used for: pg_class, pg_attribute, pg_proc,
* and pg_type (see RelationCacheInitialize).
*
* Note that these catalogs can't have constraints, default values,
* rules, or triggers, since we don't cope with any of that.
@ -1374,9 +1377,10 @@ formrdesc(const char *relationName,
/*
* It's important to distinguish between shared and non-shared
* relations, even at bootstrap time, to make sure we know where they
* are stored.
* are stored. At present, all relations that formrdesc is used for
* are not shared.
*/
relation->rd_rel->relisshared = IsSharedSystemRelationName(relationName);
relation->rd_rel->relisshared = false;
relation->rd_rel->relpages = 1;
relation->rd_rel->reltuples = 1;
@ -1434,15 +1438,8 @@ formrdesc(const char *relationName,
/* In bootstrap mode, we have no indexes */
if (!IsBootstrapProcessingMode())
{
/*
* This list is incomplete, but it only has to work for the set of
* rels that formrdesc is used for ...
*/
if (strcmp(relationName, RelationRelationName) == 0 ||
strcmp(relationName, AttributeRelationName) == 0 ||
strcmp(relationName, ProcedureRelationName) == 0 ||
strcmp(relationName, TypeRelationName) == 0)
relation->rd_rel->relhasindex = true;
/* Otherwise, all the rels formrdesc is used for have indexes */
relation->rd_rel->relhasindex = true;
}
/*