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Expose more cursor-related functionality in SPI: specifically, allow

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access to the planner's cursor-related planning options, and provide new
FETCH/MOVE routines that allow access to the full power of those commands.
Small refactoring of planner(), pg_plan_query(), and pg_plan_queries()
APIs to make it convenient to pass the planning options down from SPI.

This is the core-code portion of Pavel Stehule's patch for scrollable
cursor support in plpgsql; I'll review and apply the plpgsql changes
separately.
This commit is contained in:
Tom Lane
2007-04-16 01:14:58 +00:00
parent fa92d21a48
commit 66888f7424
15 changed files with 435 additions and 71 deletions
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9
src/backend/utils/cache/plancache.c vendored
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@ -33,7 +33,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/cache/plancache.c,v 1.6 2007/04/12 06:53:47 neilc Exp $
* $PostgreSQL: pgsql/src/backend/utils/cache/plancache.c,v 1.7 2007/04/16 01:14:57 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -458,10 +458,13 @@ RevalidateCachedPlan(CachedPlanSource *plansource, bool useResOwner)
if (plansource->fully_planned)
{
/*
* Generate plans for queries. Assume snapshot is not set yet
* Generate plans for queries. We don't need any boundParams, and
* currently we don't need to worry about cursor options because
* cursor plans are never saved in the plancache (that might have
* to change someday). Also, assume snapshot is not set yet
* (XXX this may be wasteful, won't all callers have done that?)
*/
slist = pg_plan_queries(slist, NULL, true);
slist = pg_plan_queries(slist, 0, NULL, true);
}
/*