Prevent PHP from parsing away OldValue, NewValue tags in XxxHistory q…

…ueries. Fixes #13.

soapclient/SforceBaseClient.php

@@ -29,7 +29,6 @@
 require_once ('ProxySettings.php');
 require_once ('SforceHeaderOptions.php');
 
-
 /**
  * This file contains one class.
  * @package SalesforceSoapClient
@@ -61,6 +60,10 @@ class SforceBaseClient {
 	protected $localeOptions;
 	protected $packageVersionHeader;
 
+  protected function getSoapClient($wsdl, $options) {
+		return new SoapClient($wsdl, $options);      
+  }
+
 	public function getNamespace() {
 		return $this->namespace;
 	}
@@ -90,7 +93,7 @@ public function printDebugInfo() {
 			echo 'False';
 		}
 	}
-
+	
 	/**
 	 * Connect method to www.salesforce.com
 	 *
@@ -122,7 +125,8 @@ public function createConnection($wsdl, $proxy=null) {
             $soapClientArray = array_merge($soapClientArray, $proxySettings);
 		}
 
-		$this->sforce = new SoapClient($wsdl, $soapClientArray);
+  	$this->sforce = $this->getSoapClient($wsdl, $soapClientArray);
+
 		return $this->sforce;
 	}
 

soapclient/SforcePartnerClient.php

@@ -32,6 +32,40 @@
  * This file contains two classes.
  * @package SalesforceSoapClient
  */
+/**
+ * SforceSoapClient class.
+ *
+ * @package SalesforceSoapClient
+ */
+ // When parsing partner WSDL, when PHP SOAP sees NewValue and OldValue, since
+ // the element has a xsi:type attribute with value 'string', it drops the
+ // string content into the parsed output and loses the tag name. Removing the
+ // xsi:type forces PHP SOAP to just leave the tags intact
+ class SforceSoapClient extends SoapClient {
+   function __doRequest($request, $location, $action, $version) {
+     $response = parent::__doRequest($request, $location, $action, $version);
+
+     // Quick check to only parse the XML here if we think we need to
+     if (strpos($response, '<sf:OldValue') === false && strpos($response, '<sf:NewValue') === false) {
+       return $response;
+     }
+
+     $dom = new DOMDocument();
+     $dom->loadXML($response);
+
+     $nodeList = $dom->getElementsByTagName('NewValue');
+     foreach ($nodeList as $node) {
+       $node->removeAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'type');
+     }
+     $nodeList = $dom->getElementsByTagName('OldValue');
+     foreach ($nodeList as $node) {
+       $node->removeAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'type');
+     }
+
+     return $dom->saveXML();      
+   }
+ }
+
 /**
  * SforcePartnerClient class.
  *
@@ -43,6 +77,11 @@ class SforcePartnerClient extends SforceBaseClient {
   function SforcePartnerClient() {
     $this->namespace = self::PARTNER_NAMESPACE;
   }
+
+  protected function getSoapClient($wsdl, $options) {
+    // Workaround an issue in parsing OldValue and NewValue in histories
+		return new SforceSoapClient($wsdl, $options);      
+  }
 
   /**
    * Adds one or more new individual objects to your organization's data.