SDL Tridion 2011 SP1 code hangs creating Broker Query object - tridion

Question

A client is trying to integrate some Broker Query code in to an existing web application. They have the following code:
public String doItNow(int keyA,
String schemaA,
String templateIdA) throws Exception {
loggerInfo("doItNow.start" +
", key:" + keyA +
", schema:" + schemaA +
", templateId:" + templateIdA);
StringBuffer sb = new StringBuffer();
PublicationCriteria pubCriteria = new PublicationCriteria(keyA);
loggerInfo("doItNow.PC:" + pubCriteria);
SchemaTitleCriteria schemaTitleCriteria = new SchemaTitleCriteria(schemaA);
loggerInfo("doItNow.STC:" + schemaTitleCriteria);
AndCriteria andCriteria = new AndCriteria(pubCriteria, schemaTitleCriteria);
loggerInfo("doItNow.AC:" + andCriteria);
Query query = new Query();
loggerInfo("doItNow.Query.0:" + query);
query.setCriteria(andCriteria);
loggerInfo("doItNow.Query.1:" + query);
String[] results = query.executeQuery();
for (String r : results) {
loggerInfo("doItNow.\tres:" + r);
}
ComponentPresentationAssembler cpa = new ComponentPresentationAssembler(keyA);
loggerInfo("doItNow.CPA:" + cpa);
for (String item : results) {
loggerInfo(":>" + item);
sb.append(cpa.getContent(item, templateIdA));
}
return sb.toString();
}
The code exectues as far as creating the Query object:
Query query = new Query();
At this point it hangs. No errors appear in the cd_core log file to suggest a reason for this. Can anyone suggest areas where can investigate to debug this further, or suggest a solution?

Answer 1

There was known issue with JRE version 1.6.0.29 and MSSQL jdbc driver. You need to either downgrade or upgrade to a different JRE version.
https://forums.oracle.com/forums/thread.jspa?threadID=2301826
The issue seems very similar to the issue reported with the driver and you do not see any error messages either.

Answer 2

Try changing the following line:
query.setCriteria(andCriteria);
to:
query.Criteria = andCriteria;
The SDL LiveContent example has a comment suggesting this change.
http://sdllivecontent.sdl.com/LiveContent/content/en-US/SDL_Tridion_2011_SPONE/concept_0AB6D192D7AB4EC18892631F519EF1DD

Answer 3

Have you added the correct includes? (Tridion.ContentDelivery.DynamicContent.Query Namespace)
Also as suggested by Chris, query in tridion 2011 does not have a property as setCriteria.
Use query.Criteria instead.
Also have you implemented the necessary changed in cd_storage_conf.xml?