XPathOperations - [#document: null] issue

[byF]

Hi!

I use XPathOperations on a Source with this code:

xpathOperator.evaluateAsObject("ns1:Capabs/pls:ServiceId",src, new NodeMapper() {
		    public Object mapNode(Node node, int i) throws DOMException {
		        Element servIdent = (Element) node;
		        String type = new String();
		        try {
		        System.err.println(servIdent.toString());
		        type = servIdent.getElementsByTagNameNS("pls","ServiceType").item(0).getNodeValue();
		        System.err.println("t1");
		        } catch (DOMException de) {
		        	System.err.println("t2");
		        	de.printStackTrace();
		        }
		        String version = servIdent.getElementsByTagNameNS("pls","ServiceTypeVersion").item(0).getNodeValue();
		        String title = servIdent.getElementsByTagNameNS("pls","Title").item(0).getNodeValue();
		        
		        return new Capabilities(type, version, title);
		    }
		});

This code

System.err.println(servIdent.toString());

prints into the output

[pls:ServiceId : null]

and I get a NullPointerException on the line

type = servIdent.getElementsByTagNameNS("pls","ServiceType").item(0).getNodeValue();

I've traced the problem inside JDK classes, where XPathImpl which is being used dwells. Apparently, Document is loaded with null siblings.

Does anyone have any idea?