public static Message topicSubscribe(TopicConnection cnn, String topicName, long timeout)
throws JMSException {
TopicSubscriber receiver = getTopicSubscriber(cnn, topicName);
Message msg = receiver.receive(timeout);
if (msg != null) msg.acknowledge();
receiver.close();
return msg;
}
public static void drainTopic(TopicConnection cnn, String topic) throws Exception {
TopicSession session = cnn.createTopicSession(false, Session.DUPS_OK_ACKNOWLEDGE);
Topic t = session.createTopic(topic);
TopicSubscriber subscriber = session.createSubscriber(t);
Message msg = subscriber.receiveNoWait();
while (msg != null) {
try {
msg.acknowledge();
} catch (JMSException e) {
}
msg = subscriber.receiveNoWait();
}
subscriber.close();
session.close();
}
