/**
* Demonstrate how to call an asynchronous EJB and continue local work meanwhile. After finishing
* local work wait for the result of the server call.<br>
* Remember that the call of Future.get() will have a remote roundtrip to the server.
*/
private void waitForAsyncResult()
throws InterruptedException, ExecutionException, TimeoutException {
Future<String> myResult = accessBean.longerRunning(1500); // Start a call with a short duration
// you might do something here
// get() without a timeout will wait until the remote result is present.
LOGGER.info("Got the async result as expected after wait => " + myResult.get());
}
/**
* Demonstrate how to call an asynchronous EJB, and then perform another task whilst waiting for
* the result. If the result is not present after the timeout of get(<timeout>) the result will be
* ignored.
*
* @throws TimeoutException Will be thrown if you change the timing
*/
private void getResultAsync() throws InterruptedException, ExecutionException, TimeoutException {
Future<String> myResult = accessBean.longerRunning(200); // Start a call with a short duration
// simulate something
// wait below 200ms will force a timeout during get
Thread.sleep(400);
// If you handle the TimeoutException you are able to ignore the result
// WARNING: there might be an ERROR at server side that the result is not delivered
LOGGER.info("Got the async result as expected => " + myResult.get(1, TimeUnit.MILLISECONDS));
}
