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FOR UPDATE is in parser & rules.

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This commit is contained in:
Vadim B. Mikheev
1999-01-21 16:08:55 +00:00
parent c8ae6afd13
commit 12be3e08f1
10 changed files with 763 additions and 609 deletions
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42
src/backend/rewrite/rewriteHandler.c
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@ -6,7 +6,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/rewrite/rewriteHandler.c,v 1.28 1999/01/18 00:09:54 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/rewrite/rewriteHandler.c,v 1.29 1999/01/21 16:08:48 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -1799,7 +1799,8 @@ ApplyRetrieveRule(Query *parsetree,
Query *rule_action = NULL;
Node *rule_qual;
List *rtable,
*rt;
*rt,
*l;
int nothing,
rt_length;
int badsql = FALSE;
@ -1834,6 +1835,43 @@ ApplyRetrieveRule(Query *parsetree,
rtable = nconc(rtable, copyObject(rule_action->rtable));
parsetree->rtable = rtable;
/* FOR UPDATE of view... */
foreach (l, parsetree->rowMark)
{
if (((RowMark*)lfirst(l))->rti == rt_index)
break;
}
if (l != NULL) /* oh, hell -:) */
{
RowMark *newrm;
Index rti = 1;
List *l2;
/*
* We believe that rt_index is VIEW - nothing should be
* marked for VIEW, but ACL check must be done.
* As for real tables of VIEW - their rows must be marked, but
* we have to skip ACL check for them.
*/
((RowMark*)lfirst(l))->info &= ~ROW_MARK_FOR_UPDATE;
foreach (l2, rule_action->rtable)
{
/*
* RTable of VIEW has two entries of VIEW itself -
* we use relid to skip them.
*/
if (relation->rd_id != ((RangeTblEntry*)lfirst(l2))->relid)
{
newrm = makeNode(RowMark);
newrm->rti = rti + rt_length;
newrm->info = ROW_MARK_FOR_UPDATE;
lnext(l) = lcons(newrm, lnext(l));
l = lnext(l);
}
rti++;
}
}
rule_action->rtable = rtable;
OffsetVarNodes((Node *) rule_qual, rt_length, 0);
OffsetVarNodes((Node *) rule_action, rt_length, 0);