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WITH CHECK OPTION support for auto-updatable VIEWs

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For simple views which are automatically updatable, this patch allows
the user to specify what level of checking should be done on records
being inserted or updated.  For 'LOCAL CHECK', new tuples are validated
against the conditionals of the view they are being inserted into, while
for 'CASCADED CHECK' the new tuples are validated against the
conditionals for all views involved (from the top down).

This option is part of the SQL specification.

Dean Rasheed, reviewed by Pavel Stehule
This commit is contained in:
Stephen Frost
2013-07-18 17:10:16 -04:00
parent 6f9e39bc99
commit 4cbe3ac3e8
33 changed files with 1245 additions and 107 deletions
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43
src/backend/parser/gram.y
View File

@ -470,7 +470,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
%type <list> constraints_set_list
%type <boolean> constraints_set_mode
%type <str> OptTableSpace OptConsTableSpace OptTableSpaceOwner
%type <list> opt_check_option
%type <ival> opt_check_option
%type <str> opt_provider security_label
@ -7995,6 +7995,7 @@ ViewStmt: CREATE OptTemp VIEW qualified_name opt_column_list opt_reloptions
n->query = $8;
n->replace = false;
n->options = $6;
n->withCheckOption = $9;
$$ = (Node *) n;
}
| CREATE OR REPLACE OptTemp VIEW qualified_name opt_column_list opt_reloptions
@ -8007,10 +8008,11 @@ ViewStmt: CREATE OptTemp VIEW qualified_name opt_column_list opt_reloptions
n->query = $10;
n->replace = true;
n->options = $8;
n->withCheckOption = $11;
$$ = (Node *) n;
}
| CREATE OptTemp RECURSIVE VIEW qualified_name '(' columnList ')' opt_reloptions
AS SelectStmt
AS SelectStmt opt_check_option
{
ViewStmt *n = makeNode(ViewStmt);
n->view = $5;
@ -8019,10 +8021,16 @@ ViewStmt: CREATE OptTemp VIEW qualified_name opt_column_list opt_reloptions
n->query = makeRecursiveViewSelect(n->view->relname, n->aliases, $11);
n->replace = false;
n->options = $9;
n->withCheckOption = $12;
if (n->withCheckOption != NO_CHECK_OPTION)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("WITH CHECK OPTION not supported on recursive views"),
parser_errposition(@12)));
$$ = (Node *) n;
}
| CREATE OR REPLACE OptTemp RECURSIVE VIEW qualified_name '(' columnList ')' opt_reloptions
AS SelectStmt
AS SelectStmt opt_check_option
{
ViewStmt *n = makeNode(ViewStmt);
n->view = $7;
@ -8031,30 +8039,21 @@ ViewStmt: CREATE OptTemp VIEW qualified_name opt_column_list opt_reloptions
n->query = makeRecursiveViewSelect(n->view->relname, n->aliases, $13);
n->replace = true;
n->options = $11;
n->withCheckOption = $14;
if (n->withCheckOption != NO_CHECK_OPTION)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("WITH CHECK OPTION not supported on recursive views"),
parser_errposition(@14)));
$$ = (Node *) n;
}
;
opt_check_option:
WITH CHECK OPTION
{
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("WITH CHECK OPTION is not implemented")));
}
| WITH CASCADED CHECK OPTION
{
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("WITH CHECK OPTION is not implemented")));
}
| WITH LOCAL CHECK OPTION
{
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("WITH CHECK OPTION is not implemented")));
}
| /* EMPTY */ { $$ = NIL; }
WITH CHECK OPTION { $$ = CASCADED_CHECK_OPTION; }
| WITH CASCADED CHECK OPTION { $$ = CASCADED_CHECK_OPTION; }
| WITH LOCAL CHECK OPTION { $$ = LOCAL_CHECK_OPTION; }
| /* EMPTY */ { $$ = NO_CHECK_OPTION; }
;
/*****************************************************************************