private Map<Integer, MeasurementEvent> getLatestMeasurementEvents() {
Map<Integer, MeasurementEvent> measMap = new HashMap<Integer, MeasurementEvent>();
for (AbstractEvent savedEvent : events.values()) {
if (savedEvent instanceof TriggerFiredEvent) {
TriggerFiredEvent tfe = (TriggerFiredEvent) savedEvent;
AbstractEvent[] triggeredEvents = tfe.getEvents();
for (AbstractEvent triggeredEvent : triggeredEvents) {
if (triggeredEvent instanceof MeasurementEvent) {
MeasurementEvent me = (MeasurementEvent) triggeredEvent;
Integer measurementId = me.getInstanceId();
MeasurementEvent savedMe = measMap.get(measurementId);
if (savedMe == null) {
measMap.put(measurementId, me);
} else {
if (me.getTimestamp() > savedMe.getTimestamp()) {
// replace with the latest measurement event
measMap.put(measurementId, me);
}
}
}
}
}
}
return measMap;
}
private boolean isStale(TriggerFiredEvent tfe, Map<Integer, MeasurementEvent> measMap) {
boolean stale = false;
AbstractEvent[] triggeredEvents = tfe.getEvents();
for (AbstractEvent triggeredEvent : triggeredEvents) {
if (triggeredEvent instanceof MeasurementEvent) {
MeasurementEvent me = (MeasurementEvent) triggeredEvent;
Integer measurementId = me.getInstanceId();
MeasurementEvent latestMe = measMap.get(measurementId);
if ((latestMe != null) && (me.getTimestamp() < latestMe.getTimestamp())) {
stale = true;
break;
}
}
}
return stale;
}