How to retrieve TestCaseQuery URI via OSLC API

I would like to update a test case via the OSLC API I’m able to retrieve the designated Service Provider (Project Area) (I’m following example 4 in Lab 3 in the oslc document)

https://myJazzServer:9443/jazz/oslc_qm/contexts/<ID>/services.xml

But how do I get the right queryCapability, the one for test cases? When I use the HttpRequester add-on for FireFox I can se that the URI I’m trying to get should look like this:

https:// my JazzServer:9443/jazz/oslc_qm/contexts/<ID>/resourcescom.ibm.rqm.planning.VersionedTestCase

I’ve tried to write this

XPathFactory factory = XPathFactory.newInstance();
XPath xpath = factory.newXPath();
String simpleQueryXPath = "//oslc:QueryCapability/oslc:queryBase/@rdf:resource"; xpath.setNamespaceContext( new NamespaceContextMap(new String[] {"oslc", "http://open-services.net/ns/qm#", "rdf", "http://www.w3.org/1999/02/22-rdf-syntax-ns#"}));

// Parse the response body to retrieve the Change Management Simple Query URL InputSource source = new InputSource(response.getEntity().getContent()); Node simpleQueryURLNode = (Node)(xpath.evaluate(simpleQueryXPath, source, XPathConstants.NODE));