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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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src/backend/access/gist/gistvacuum.c
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@ -248,7 +248,7 @@ gistbulkdelete(PG_FUNCTION_ARGS)
PageIndexTupleDelete(page, todelete[i]);
GistMarkTuplesDeleted(page);
if (!rel->rd_istemp)
if (RelationNeedsWAL(rel))
{
XLogRecData *rdata;
XLogRecPtr recptr;