protected static EventBean[] convertToArray(Object eventOrDeque) {
if (eventOrDeque == null) {
return null;
}
if (eventOrDeque instanceof EventBean) {
return new EventBean[] {(EventBean) eventOrDeque};
}
return EventBeanUtility.toArray((ArrayDeque<EventBean>) eventOrDeque);
}
public void handleMatching(EventBean[] triggerEvents, EventBean[] matchingEvents) {
EventBean[] newData;
// clear state from prior results
resultSetProcessor.clear();
// build join result
// use linked hash set to retain order of join results for last/first/window to work most
// intuitively
Set<MultiKey<EventBean>> newEvents = new LinkedHashSet<MultiKey<EventBean>>();
for (int i = 0; i < triggerEvents.length; i++) {
EventBean triggerEvent = triggerEvents[0];
if (matchingEvents != null) {
for (int j = 0; j < matchingEvents.length; j++) {
EventBean[] eventsPerStream = new EventBean[2];
eventsPerStream[0] = matchingEvents[j];
eventsPerStream[1] = triggerEvent;
newEvents.add(new MultiKey<EventBean>(eventsPerStream));
}
}
}
// process matches
UniformPair<EventBean[]> pair =
resultSetProcessor.processJoinResult(newEvents, oldEvents, false);
newData = (pair != null ? pair.getFirst() : null);
if (isDistinct) {
newData = EventBeanUtility.getDistinctByProp(newData, eventBeanReader);
}
if (internalEventRouter != null) {
if (newData != null) {
for (int i = 0; i < newData.length; i++) {
internalEventRouter.route(
newData[i],
statementHandle,
statementContext.getInternalEventEngineRouteDest(),
statementContext,
addToFront);
}
}
}
// The on-select listeners receive the events selected
if ((newData != null) && (newData.length > 0)) {
// And post only if we have listeners/subscribers that need the data
if (statementResultService.isMakeNatural() || statementResultService.isMakeSynthetic()) {
updateChildren(newData, null);
}
}
lastResult = newData;
// clear state from prior results
resultSetProcessor.clear();
}
/**
* Ctor.
*
* @param eventType - event type to expect for lookup
* @param index - index to look up in
*/
public IndexedTableLookupStrategySingle(
EventType eventType, String property, PropertyIndexedEventTableSingle index) {
this.eventType = eventType;
this.property = property;
if (index == null) {
throw new IllegalArgumentException("Unexpected null index received");
}
this.index = index;
propertyGetter = EventBeanUtility.getAssertPropertyGetter(eventType, property);
}
public void render(EventBean theEvent, StringWriter writer) {
EventBeanUtility.summarize(theEvent, writer);
}