/**
* This method processed an arrived real element The method is synchronized to ensure that it
* cannot interleave with {@link StreamDiscretizer#triggerOnFakeElement(Object)}
*
* @param input a real input element
* @throws Exception
*/
protected synchronized void processRealElement(IN input) throws Exception {
// Setting the input element in order to avoid NullFieldException when triggering on fake
// element
windowEvent.setElement(input);
if (isActiveTrigger) {
ActiveTriggerPolicy<IN> trigger = (ActiveTriggerPolicy<IN>) triggerPolicy;
Object[] result = trigger.preNotifyTrigger(input);
for (Object in : result) {
triggerOnFakeElement(in);
}
}
boolean isTriggered = false;
if (triggerPolicy.notifyTrigger(input)) {
emitWindow();
isTriggered = true;
}
evict(input, isTriggered);
output.collect(windowEvent.setElement(input));
bufferSize++;
}
@Override
public void open(org.apache.flink.configuration.Configuration parameters) throws Exception {
super.open(parameters);
if (isActiveTrigger) {
ActiveTriggerPolicy<IN> tp = (ActiveTriggerPolicy<IN>) triggerPolicy;
Runnable runnable = tp.createActiveTriggerRunnable(new WindowingCallback());
if (runnable != null) {
activePolicyThread = new Thread(runnable);
activePolicyThread.start();
}
}
}