public void testFlattenList() {
// test many arrays
EventBean[] testEvents =
makeEventArray(new String[] {"a1", "a2", "b1", "b2", "b3", "c1", "c2"});
ArrayDeque<UniformPair<EventBean[]>> eventVector = new ArrayDeque<UniformPair<EventBean[]>>();
eventVector.add(
new UniformPair<EventBean[]>(null, new EventBean[] {testEvents[0], testEvents[1]}));
eventVector.add(new UniformPair<EventBean[]>(new EventBean[] {testEvents[2]}, null));
eventVector.add(
new UniformPair<EventBean[]>(
null, new EventBean[] {testEvents[3], testEvents[4], testEvents[5]}));
eventVector.add(new UniformPair<EventBean[]>(new EventBean[] {testEvents[6]}, null));
UniformPair<EventBean[]> events = EventBeanUtility.flattenList(eventVector);
EPAssertionUtil.assertEqualsExactOrder(
new EventBean[] {testEvents[2], testEvents[6]}, events.getFirst());
EPAssertionUtil.assertEqualsExactOrder(
new EventBean[] {testEvents[0], testEvents[1], testEvents[3], testEvents[4], testEvents[5]},
events.getSecond());
// test just one array
eventVector.clear();
eventVector.add(new UniformPair<EventBean[]>(new EventBean[] {testEvents[2]}, null));
events = EventBeanUtility.flattenList(eventVector);
EPAssertionUtil.assertEqualsExactOrder(new EventBean[] {testEvents[2]}, events.getFirst());
EPAssertionUtil.assertEqualsExactOrder((Object[]) null, events.getSecond());
// test empty vector
eventVector.clear();
events = EventBeanUtility.flattenList(eventVector);
assertNull(events);
}
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();
}
public static void output(
boolean forceUpdate, UniformPair<EventBean[]> result, UpdateDispatchView finalView) {
EventBean[] newEvents = result != null ? result.getFirst() : null;
EventBean[] oldEvents = result != null ? result.getSecond() : null;
if (newEvents != null || oldEvents != null) {
finalView.newResult(result);
} else if (forceUpdate) {
finalView.newResult(result);
}
}
/**
* Indicate statement result.
*
* @param newOldEvents result
*/
public static void indicateEarlyReturn(
StatementContext statementContext, UniformPair<EventBean[]> newOldEvents) {
if (newOldEvents == null) {
return;
}
if ((statementContext.getMetricReportingService() != null)
&& (statementContext.getMetricReportingService().getStatementOutputHooks() != null)
&& (!statementContext.getMetricReportingService().getStatementOutputHooks().isEmpty())) {
for (StatementResultListener listener :
statementContext.getMetricReportingService().getStatementOutputHooks()) {
listener.update(
newOldEvents.getFirst(),
newOldEvents.getSecond(),
statementContext.getStatementName(),
null,
null);
}
}
}