From 2f8f76bcd5f175021e34bf5e23dcefc4286cb485 Mon Sep 17 00:00:00 2001
From: Peter Eisentraut <peter_e@gmx.net>
Date: Sun, 14 Jan 2007 13:11:54 +0000
Subject: Add support for xmlval IS DOCUMENT expression.

---
 src/backend/utils/adt/ruleutils.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'src/backend/utils/adt/ruleutils.c')

diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index 3c217c98edc..be23d938f80 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -2,7 +2,7 @@
  * ruleutils.c	- Functions to convert stored expressions/querytrees
  *				back to source text
  *
- *	  $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.241 2007/01/09 02:14:14 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.242 2007/01/14 13:11:54 petere Exp $
  **********************************************************************/
 
 #include "postgres.h"
@@ -3847,6 +3847,8 @@ get_rule_expr(Node *node, deparse_context *context,
 					case IS_XMLROOT:
 						appendStringInfoString(buf, "XMLROOT(");
 						break;
+					case IS_DOCUMENT:
+						break;
 				}
 				if (xexpr->name)
 				{
@@ -3888,6 +3890,7 @@ get_rule_expr(Node *node, deparse_context *context,
 						case IS_XMLELEMENT:
 						case IS_XMLFOREST:
 						case IS_XMLPI:
+						case IS_DOCUMENT:
 							/* no extra decoration needed */
 							get_rule_expr((Node *) xexpr->args, context, true);
 							break;
@@ -3943,7 +3946,10 @@ get_rule_expr(Node *node, deparse_context *context,
 					}
 
 				}
-				appendStringInfoChar(buf, ')');
+				if (xexpr->op == IS_DOCUMENT)
+					appendStringInfoString(buf, " IS DOCUMENT");
+				else
+					appendStringInfoChar(buf, ')');
 			}
 			break;
 
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