/** Perform event filter registration. */
public void run() {
if (log.isDebugEnabled()) {
log.debug("Registering event filter " + this.eventFilter.toString());
log.debug("Looking up matching past events in registry");
}
hibernateEventRegistry = (EventRegistry) getEventRegistry();
unitOfWork = hibernateEventRegistry.getUnitOfWork();
List<Event> matchesInRegistry =
hibernateEventRegistry.findByTemplate(this.eventFilter.getTemplate());
if (log.isDebugEnabled())
log.debug("Matching past events found in registry, publishing them");
List<Event> pastEventNotificationBatch = new ArrayList<Event>();
for (Event match : matchesInRegistry) {
if (!this.registrationHasBeenCanceled()) {
pastEventNotificationBatch.add(match);
if (pastEventNotificationBatch.size() % getPastEventNotificationBatchSize() == 0) {
this.eventLoggerService
.getEventFilterMatchHandler()
.handleMatches(this.eventFilter, pastEventNotificationBatch);
pastEventNotificationBatch.clear();
}
} else {
if (log.isDebugEnabled())
log.debug("Event filter has been deregistered. Stopping processing");
unitOfWork.rollback();
return;
}
}
if (!pastEventNotificationBatch.isEmpty())
this.eventLoggerService
.getEventFilterMatchHandler()
.handleMatches(this.eventFilter, pastEventNotificationBatch);
this.eventLoggerService.getEventRegistry().getUnitOfWork().rollback();
if (log.isDebugEnabled())
log.debug("Matching past events published, now registering filter for live events");
boolean performedLiveEventFilterRegistration = false;
if (!this.registrationHasBeenCanceled()) {
this.eventLoggerService.registerFilterForLiveEvents(this.eventFilter);
performedLiveEventFilterRegistration = true;
} else {
if (log.isDebugEnabled())
log.debug("Event filter has been deregistered. Not registering for live events anymore.");
unitOfWork.rollback();
return;
}
if (this.registrationHasBeenCanceled() && performedLiveEventFilterRegistration) {
if (log.isDebugEnabled())
log.debug(
"Event filter has been deregistered while registering for live events. Deregistering again for safety reasons.");
this.eventLoggerService.deregisterEventFilter(this.eventFilter.getUuid());
}
this.eventLoggerService.handlerFinishedEventRegistration(this.eventFilter.getUuid());
if (log.isDebugEnabled()) log.debug("Event filter registered for live events.");
unitOfWork.rollback();
}
