protected String consume() throws Exception {
Connection con = null;
MessageConsumer c = consumer;
if (connectionPerMessage) {
con = factory.createConnection();
con.start();
Session s = con.createSession(false, Session.AUTO_ACKNOWLEDGE);
c = s.createConsumer(getConsumeDestination());
}
TextMessage result = (TextMessage) c.receive(timeout);
if (result != null) {
if (audit.isDuplicate(result.getJMSMessageID())) {
throw new JMSException("Received duplicate " + result.getText());
}
if (!audit.isInOrder(result.getJMSMessageID())) {
throw new JMSException("Out of order " + result.getText());
}
if (connectionPerMessage) {
Thread.sleep(SLEEP_TIME); // give the broker a chance
con.close();
}
}
return result != null ? result.getText() : null;
}
public boolean isSendToDeadLetterQueue(Message message) {
boolean result = false;
if (message != null) {
result = true;
if (enableAudit && messageAudit.isDuplicate(message)) {
result = false;
if (LOG.isDebugEnabled()) {
LOG.debug(
"Not adding duplicate to DLQ: "
+ message.getMessageId()
+ ", dest: "
+ message.getDestination());
}
}
if (!message.isPersistent() && !processNonPersistent) {
result = false;
}
if (message.isExpired() && !processExpired) {
result = false;
}
}
return result;
}