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Generalize concept of temporary relations to "relation persistence".

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This commit replaces pg_class.relistemp with pg_class.relpersistence;
and also modifies the RangeVar node type to carry relpersistence rather
than istemp.  It also removes removes rd_istemp from RelationData and
instead performs the correct computation based on relpersistence.

For clarity, we add three new macros: RelationNeedsWAL(),
RelationUsesLocalBuffers(), and RelationUsesTempNamespace(), so that we
can clarify the purpose of each check that previous depended on
rd_istemp.

This is intended as infrastructure for the upcoming unlogged tables
patch, as well as for future possible work on global temporary tables.
This commit is contained in:
Robert Haas
2010-12-13 12:34:26 -05:00
parent 0c90442355
commit 5f7b58fad8
48 changed files with 334 additions and 230 deletions
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4
src/backend/commands/indexcmds.c
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@ -222,7 +222,7 @@ DefineIndex(RangeVar *heapRelation,
}
else
{
tablespaceId = GetDefaultTablespace(rel->rd_istemp);
tablespaceId = GetDefaultTablespace(rel->rd_rel->relpersistence);
/* note InvalidOid is OK in this case */
}
@ -1706,7 +1706,7 @@ ReindexDatabase(const char *databaseName, bool do_system, bool do_user)
continue;
/* Skip temp tables of other backends; we can't reindex them at all */
if (classtuple->relistemp &&
if (classtuple->relpersistence == RELPERSISTENCE_TEMP &&
!isTempNamespace(classtuple->relnamespace))
continue;