Fixed #75 for Xalan (#95)

Co-authored-by: Adam Bem <adam.bem@zoho.eu>
Reviewed-on: R11/release11-tools-web#95

Backend/tools-services/src/main/java/com/r11/tools/xml/Xalan.java

@@ -1,6 +1,7 @@
 package com.r11.tools.xml;
 
 import org.apache.xpath.XPathAPI;
+import org.apache.xpath.objects.XObject;
 import org.w3c.dom.Document;
 import org.w3c.dom.Node;
 import org.w3c.dom.traversal.NodeIterator;
@@ -76,6 +77,7 @@ public class Xalan {
         serializer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
 
         // Use the simple XPath API to select a nodeIterator.
+        try {
             NodeIterator nl = XPathAPI.selectNodeIterator(doc, transform);
 
             // Serialize the found nodes to result object.
@@ -98,6 +100,10 @@ public class Xalan {
                 result.append("\n");
             }
             return result.toString();
+        } catch (TransformerException e) {
+            return XPathAPI.eval(doc, transform).toString();
+        }
+
     }
 
     /**