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Update 3.0 protocol support to match recent agreements about how to

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handle multiple 'formats' for data I/O.  Restructure CommandDest and
DestReceiver stuff one more time (it's finally starting to look a bit
clean though).  Code now matches latest 3.0 protocol document as far
as message formats go --- but there is no support for binary I/O yet.
This commit is contained in:
Tom Lane
2003-05-08 18:16:37 +00:00
parent 5e7a5c9511
commit c0a8c3ac13
24 changed files with 1003 additions and 684 deletions
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27
src/backend/commands/portalcmds.c
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@ -14,7 +14,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/portalcmds.c,v 1.15 2003/05/06 20:26:26 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/portalcmds.c,v 1.16 2003/05/08 18:16:36 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -25,7 +25,6 @@
#include "commands/portalcmds.h"
#include "executor/executor.h"
#include "executor/tstoreReceiver.h"
#include "optimizer/planner.h"
#include "rewrite/rewriteHandler.h"
#include "tcop/pquery.h"
@ -145,7 +144,6 @@ PerformPortalFetch(FetchStmt *stmt,
DestReceiver *dest,
char *completionTag)
{
DestReceiver *mydest = dest;
Portal portal;
long nprocessed;
@ -168,35 +166,21 @@ PerformPortalFetch(FetchStmt *stmt,
return;
}
/*
* Adjust dest if needed. MOVE wants destination None.
*
* If fetching from a binary cursor and the requested destination is
* Remote, change it to RemoteInternal. Note we do NOT change if the
* destination is RemoteExecute --- so the Execute message's format
* specification wins out over the cursor's type.
*/
/* Adjust dest if needed. MOVE wants destination None */
if (stmt->ismove)
mydest = CreateDestReceiver(None);
else if (dest->mydest == Remote &&
(portal->cursorOptions & CURSOR_OPT_BINARY))
mydest = CreateDestReceiver(RemoteInternal);
dest = None_Receiver;
/* Do it */
nprocessed = PortalRunFetch(portal,
stmt->direction,
stmt->howMany,
mydest);
dest);
/* Return command status if wanted */
if (completionTag)
snprintf(completionTag, COMPLETION_TAG_BUFSIZE, "%s %ld",
stmt->ismove ? "MOVE" : "FETCH",
nprocessed);
/* Clean up if we created a local destination */
if (mydest != dest)
(mydest->destroy) (mydest);
}
/*
@ -329,8 +313,7 @@ PersistHoldablePortal(Portal portal)
ExecutorRewind(queryDesc);
/* Change the destination to output to the tuplestore */
queryDesc->dest = CreateTuplestoreDestReceiver(portal->holdStore,
portal->holdContext);
queryDesc->dest = CreateDestReceiver(Tuplestore, portal);
/* Fetch the result set into the tuplestore */
ExecutorRun(queryDesc, ForwardScanDirection, 0L);