Problems using XPath in Axiom when namespaces are involved

[Robert Baldock]

Hi -

I'm having problems getting my head round the use of XPath in Axiom,
especially when using namespaces.

With an XML snippet like this:

<?xml version="1.0" encoding="utf-16"?>
<X>
 <Y>
    <Z>test</Z>
 </Y>
</X>

And a code snippet like this:

String xpathString = "/X/Y/Z";
AXIOMXPath xpathExpression = new AXIOMXPath(xpathString);
OMElement element = (OMElement)xpathExpression.selectSingleNode(root);

I can retrieve the element from the XML without any problem.

However, with XML like this:

<?xml version="1.0" encoding="utf-16"?>
<X xmlns:xsi="A " xmlns:xsd="B" xmlns="C">
 <Y>
    <Z>test</Z>
 </Y>
</X>

OMNamespace namespace = documentElement.getNamespace();
String prefix = namespace.getPrefix();
String uri = namespace.getNamespaceURI();
            
AXIOMXPath xpathExpression = new AXIOMXPath(xpathString);
xpathExpression.addNamespace(prefix, uri);
OMElement element = (OMElement)xpathExpression.selectSingleNode(root);

I get no results.

Can anyone spot why this might be?

Any advice would be much appreciated.


Robert