connectionFactory = _connectionFactory;
connectionFactory = getConnectionFactory(env);
  static JMSQueue message_get_queue(Env env, String queueName,                                     ConnectionFactory connectionFactory)  {    if (connectionFactory == null)      connectionFactory = _connectionFactory;    if (connectionFactory == null) {      env.warning(L.l("No connection factory"));      return null;    }    try {      return new JMSQueue(_context, connectionFactory, queueName);    } catch (Exception e) {      env.warning(e);      return null;    }  }