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Portal and memory management infrastructure for extended query protocol.

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Both plannable queries and utility commands are now always executed
within Portals, which have been revamped so that they can handle the
load (they used to be good only for single SELECT queries).  Restructure
code to push command-completion-tag selection logic out of postgres.c,
so that it won't have to be duplicated between simple and extended queries.
initdb forced due to addition of a field to Query nodes.
This commit is contained in:
Tom Lane
2003-05-02 20:54:36 +00:00
parent 1940434f1e
commit de28dc9a04
33 changed files with 2210 additions and 1698 deletions
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20
src/backend/executor/tstoreReceiver.c
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@ -9,7 +9,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/tstoreReceiver.c,v 1.2 2003/04/29 03:21:29 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/tstoreReceiver.c,v 1.3 2003/05/02 20:54:34 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -43,18 +43,18 @@ tstoreSetupReceiver(DestReceiver *self, int operation,
const char *portalname, TupleDesc typeinfo)
{
TStoreState *myState = (TStoreState *) self;
Portal portal;
if (operation != CMD_SELECT)
elog(ERROR, "Unexpected operation type: %d", operation);
/* Should only be called within a suitably-prepped portal */
if (CurrentPortal == NULL ||
CurrentPortal->holdStore == NULL)
elog(ERROR, "Tuplestore destination used in wrong context");
portal = GetPortalByName(portalname);
/* Debug check: make sure portal's result tuple desc is correct */
Assert(CurrentPortal->tupDesc != NULL);
Assert(equalTupleDescs(CurrentPortal->tupDesc, typeinfo));
if (portal == NULL)
elog(ERROR, "Specified portal does not exist: %s", portalname);
myState->tstore = portal->holdStore;
myState->cxt = portal->holdContext;
myState->tstore = CurrentPortal->holdStore;
myState->cxt = CurrentPortal->holdContext;
}
/*