public class AiQuery {

      public static void main(String[] args) {

            ServiceFactory sf = ServiceFactoryLocator.get("motu", "motu");

            QueryService qs = sf.getQueryService();

            ActivityInstanceQuery aiq = ActivityInstanceQuery
                        .findInStateHavingData("Hibernation", "HibernatedActivity",
                                    "Data1", "daat1", ActivityInstanceState.Hibernated);

            aiq.where(DataFilter.isEqual("Data2", "daat2"));
            aiq.setPolicy(DescriptorPolicy.WITH_DESCRIPTORS);
            
            ActivityInstances ais = qs.getAllActivityInstances(aiq);

            for (Iterator iterator = ais.iterator(); iterator.hasNext();) {
                  ActivityInstance ai = (ActivityInstance) iterator.next();
                  ProcessInstanceDetails piD = (ProcessInstanceDetails) ai.getProcessInstance();
                  
                  System.out.println("AI: " + ai.getOID() + " PI: " + ai.getProcessInstance().getOID() + " Data3:" + piD.getDescriptorValue("Data3"));
            }
            sf.close();

      }
}