From 652cc1549a159c2e7cf734ccd9896c684b38afe5 Mon Sep 17 00:00:00 2001
From: lickawtl <lickawtl@gmail.com>
Date: Fri, 8 Jul 2011 14:04:50 +0000
Subject: [PATCH] fix a bug where empty argument were escaped

git-svn-id: http://xe-core.googlecode.com/svn/branches/1.5.0-DB@8584 201d5d3c-b55e-5fd7-737f-ddc643e51545
---
 classes/xml/xmlquery/argument/Argument.class.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/classes/xml/xmlquery/argument/Argument.class.php b/classes/xml/xmlquery/argument/Argument.class.php
index a3ed14a56..2d48a3a48 100644
--- a/classes/xml/xmlquery/argument/Argument.class.php
+++ b/classes/xml/xmlquery/argument/Argument.class.php
@@ -47,6 +47,7 @@
 				$dbParser = XmlQueryParser::getDBParser();
 				return $dbParser->parseExpression($value);                            
                         }  
+                        if(!isset($value) || $value === '') return null;
 			if(in_array($this->type, array('date', 'varchar', 'char','text', 'bigtext'))){
 				if(!is_array($value))
 					$value = '\''.$value.'\'';