public void run() {
try {
tt.execute(this);
} catch (Exception e) {
handleException(e);
} finally {
latch.countDown();
}
}
public void poll() throws Exception {
TransactionTemplate tt =
new TransactionTemplate(
endpoint.getTransactionConfig(),
connector.getExceptionListener(),
connector.getManagementContext());
if (this.isReceiveMessagesInTransaction()) {
// Receive messages and process them in a single transaction
// Do not enable threading here, but several workers
// may have been started
TransactionCallback cb =
new TransactionCallback() {
public Object doInTransaction() throws Exception {
List messages = getMessages();
if (messages != null && messages.size() > 0) {
for (Iterator it = messages.iterator(); it.hasNext(); ) {
TransactedPollingMessageReceiver.this.processMessage(it.next());
}
}
return null;
}
};
tt.execute(cb);
} else {
// Receive messages and launch a worker for each message
List messages = getMessages();
if (messages != null && messages.size() > 0) {
final CountDownLatch countdown = new CountDownLatch(messages.size());
for (Iterator it = messages.iterator(); it.hasNext(); ) {
try {
this.getWorkManager()
.scheduleWork(new MessageProcessorWorker(tt, countdown, it.next()));
} catch (Exception e) {
countdown.countDown();
throw e;
}
}
countdown.await();
}
}
}
