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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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21
src/backend/parser/analyze.c
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@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.268 2003/04/29 22:13:09 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.269 2003/05/02 20:54:34 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -237,13 +237,23 @@ do_parse_analyze(Node *parseTree, ParseState *pstate)
/*
* Make sure that only the original query is marked original. We have
* to do this explicitly since recursive calls of do_parse_analyze will
* have marked some of the added-on queries as "original".
* have marked some of the added-on queries as "original". Also mark
* only the original query as allowed to set the command-result tag.
*/
foreach(listscan, result)
{
Query *q = lfirst(listscan);
q->querySource = (q == query ? QSRC_ORIGINAL : QSRC_PARSER);
if (q == query)
{
q->querySource = QSRC_ORIGINAL;
q->canSetTag = true;
}
else
{
q->querySource = QSRC_PARSER;
q->canSetTag = false;
}
}
return result;
@ -399,6 +409,11 @@ transformStmt(ParseState *pstate, Node *parseTree,
result->utilityStmt = (Node *) parseTree;
break;
}
/* Mark as original query until we learn differently */
result->querySource = QSRC_ORIGINAL;
result->canSetTag = true;
return result;
}