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Fix dumping of security_barrier views with circular dependencies.

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If a view has circular dependencies, pg_dump splits it into a CREATE TABLE
and a CREATE RULE command to break the dependency loop.  However, if the
view has reloptions, those options cannot be applied in the CREATE TABLE
command, because views and tables have different allowed reloptions so
CREATE TABLE would reject them.  Instead apply the reloptions after the
CREATE RULE, using ALTER VIEW SET.
This commit is contained in:
Tom Lane 2012-08-21 15:18:36 -04:00
parent 4b373e42d1
commit 0f524ea0cf
3 changed files with 34 additions and 6 deletions
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25
src/bin/pg_dump/pg_dump.c
View File

@ -5064,6 +5064,16 @@ getRules(Archive *fout, int *numRules)
}
else
ruleinfo[i].separate = true;
/*
* If we're forced to break a dependency loop by dumping a view as a
* table and separate _RETURN rule, we'll move the view's reloptions
* to the rule. (This is necessary because tables and views have
* different valid reloptions, so we can't apply the options until the
* backend knows it's a view.) Otherwise the rule's reloptions stay
* NULL.
*/
ruleinfo[i].reloptions = NULL;
}
PQclear(res);
@ -13873,10 +13883,7 @@ dumpRule(Archive *fout, RuleInfo *rinfo)
*/
if (rinfo->ev_enabled != 'O')
{
appendPQExpBuffer(cmd, "ALTER TABLE %s.",
fmtId(tbinfo->dobj.namespace->dobj.name));
appendPQExpBuffer(cmd, "%s ",
fmtId(tbinfo->dobj.name));
appendPQExpBuffer(cmd, "ALTER TABLE %s ", fmtId(tbinfo->dobj.name));
switch (rinfo->ev_enabled)
{
case 'A':
@ -13894,6 +13901,16 @@ dumpRule(Archive *fout, RuleInfo *rinfo)
}
}
/*
* Apply view's reloptions when its ON SELECT rule is separate.
*/
if (rinfo->reloptions)
{
appendPQExpBuffer(cmd, "ALTER VIEW %s SET (%s);\n",
fmtId(tbinfo->dobj.name),
rinfo->reloptions);
}
/*
* DROP must be fully qualified in case same name appears in pg_catalog
*/

2
src/bin/pg_dump/pg_dump.h
View File

@ -333,6 +333,8 @@ typedef struct _ruleInfo
char ev_enabled;
bool separate; /* TRUE if must dump as separate item */
/* separate is always true for non-ON SELECT rules */
char *reloptions; /* options specified by WITH (...) */
/* reloptions is only set if we need to dump the options with the rule */
} RuleInfo;
typedef struct _triggerInfo

13
src/bin/pg_dump/pg_dump_sort.c
View File

@ -725,12 +725,21 @@ static void
repairViewRuleMultiLoop(DumpableObject *viewobj,
DumpableObject *ruleobj)
{
TableInfo *viewinfo = (TableInfo *) viewobj;
RuleInfo *ruleinfo = (RuleInfo *) ruleobj;
/* remove view's dependency on rule */
removeObjectDependency(viewobj, ruleobj->dumpId);
/* pretend view is a plain table and dump it that way */
((TableInfo *) viewobj)->relkind = 'r'; /* RELKIND_RELATION */
viewinfo->relkind = 'r'; /* RELKIND_RELATION */
/* mark rule as needing its own dump */
((RuleInfo *) ruleobj)->separate = true;
ruleinfo->separate = true;
/* move any reloptions from view to rule */
if (viewinfo->reloptions)
{
ruleinfo->reloptions = viewinfo->reloptions;
viewinfo->reloptions = NULL;
}
/* put back rule's dependency on view */
addObjectDependency(ruleobj, viewobj->dumpId);
/* now that rule is separate, it must be post-data */