TestCase querying issue

 Hi,

Based on the  ETMSample from Lyo's OSLC-client lyo-samples/ETMSample.java at master · OSLC/lyo-samples (github.com), I wrote a query that should retrieve all the test cases of a given project area.

The result of this query is always an empty array, although there is actually 3 test cases in this project area.

Did I missed something ?

String catalogUrl = new RootServicesHelper( <My QM URL> , OSLCConstants.OSLC_QM_V2, client).getCatalogUrl();
String serviceProviderUrl = client.lookupServiceProviderUrl(catalogUrl,  <My QM project area> );
String queryCapability = client.lookupQueryCapability(serviceProviderUrl, OSLCConstants.OSLC_QM_V2, OSLCConstants.QM_TEST_CASE_QUERY);
OslcQueryParameters queryParams = new OslcQueryParameters();
queryParams.setPrefix("rdf=<http://www.w3.org/1999/02/22-rdf-syntax-ns#>");
queryParams.setWhere("rdf:type=<http://open-services.net/ns/qm#TestCase>");
OslcQuery query = new OslcQuery(client, queryCapability, -1, queryParams);
OslcQueryResult result = query.submit();
Assertions.assertNotNull(result);
Assertions.assertEquals(3, result.getMembersUrls().length);