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SPI manager.

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This commit is contained in:
Vadim B. Mikheev
1997-08-29 09:05:57 +00:00
parent 3152996ffb
commit 0d0254d1fb
3 changed files with 633 additions and 18 deletions
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48
src/backend/executor/functions.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/functions.c,v 1.6 1997/08/12 22:52:35 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/functions.c,v 1.7 1997/08/29 09:02:50 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -365,9 +365,19 @@ postquel_execute(execution_state *es,
Datum
postquel_function(Func *funcNode, char **args, bool *isNull, bool *isDone)
{
execution_state *es;
Datum result = 0;
FunctionCachePtr fcache = funcNode->func_fcache;
execution_state *es;
Datum result = 0;
FunctionCachePtr fcache = funcNode->func_fcache;
CommandId savedId;
/*
* Before we start do anything we must save CurrentScanCommandId
* to restore it before return to upper Executor. Also, we have to
* set CurrentScanCommandId equal to CurrentCommandId.
* - vadim 08/29/97
*/
savedId = GetScanCommandId ();
SetScanCommandId (GetCurrentCommandId ());
es = (execution_state *) fcache->func_state;
if (es == NULL)
@ -401,22 +411,23 @@ postquel_function(Func *funcNode, char **args, bool *isNull, bool *isDone)
* If we've gone through every command in this function, we are done.
*/
if (es == (execution_state *)NULL)
{
/*
* Reset the execution states to start over again
*/
es = (execution_state *)fcache->func_state;
while (es)
{
/*
* Reset the execution states to start over again
*/
es = (execution_state *)fcache->func_state;
while (es)
{
es->status = F_EXEC_START;
es = es->next;
}
/*
* Let caller know we're finished.
*/
*isDone = true;
return (fcache->oneResult) ? result : (Datum)NULL;
es->status = F_EXEC_START;
es = es->next;
}
/*
* Let caller know we're finished.
*/
*isDone = true;
SetScanCommandId (savedId);
return (fcache->oneResult) ? result : (Datum)NULL;
}
/*
* If we got a result from a command within the function it has
* to be the final command. All others shouldn't be returing
@ -425,5 +436,6 @@ postquel_function(Func *funcNode, char **args, bool *isNull, bool *isDone)
Assert ( LAST_POSTQUEL_COMMAND(es) );
*isDone = false;
SetScanCommandId (savedId);
return result;
}