/**
  * Execute the "getMessageTalks" query synchronously
  *
  * @param n Number of rows queried
  * @return List containing the result of this query
  */
 public synchronized List<MessageTypPrx> getMessageTalks(UserTypPrx usr1, UserTypPrx usr2, int n) {
   _queryController.destroy();
   DBQueryController queryController;
   _queryController =
       queryController = new DBQueryController(_handler, _session.getCardroidManager());
   return queryController.getMessageTalks(usr1, usr2, n);
 }
 /**
  * Execute the "getMessageTalks" query asynchronously
  *
  * @param listener Implementation of the callback methods that will be called upon the completion
  *     of the query
  * @return QueryController containing the context of this query
  */
 public synchronized DBQueryController getMessageTalks(
     QueryListener listener, UserTypPrx usr1, UserTypPrx usr2) {
   _queryController.destroy();
   DBQueryController queryController;
   _queryController =
       queryController = new DBQueryController(_handler, _session.getCardroidManager());
   queryController.getMessageTalks(listener, usr1, usr2);
   return queryController;
 }