net.esper.pattern.observer
Class TimerAtObserver

java.lang.Object
  extended by net.esper.pattern.observer.TimerAtObserver
All Implemented Interfaces:
EventObserver, ScheduleCallback

public class TimerAtObserver
extends java.lang.Object
implements EventObserver, ScheduleCallback

Observer implementation for indicating that a certain time arrived, similar to "crontab".


Constructor Summary
TimerAtObserver(ScheduleSpec scheduleSpec, PatternContext context, MatchedEventMap beginState, ObserverEventEvaluator observerEventEvaluator)
          Ctor.
 
Method Summary
 void scheduledTrigger()
          Callback that is invoked as indicated by a schedule added to the scheduling service.
 void startObserve()
          Start observing.
 void stopObserve()
          Stop observing.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

TimerAtObserver

public TimerAtObserver(ScheduleSpec scheduleSpec,
                       PatternContext context,
                       MatchedEventMap beginState,
                       ObserverEventEvaluator observerEventEvaluator)
Ctor.

Parameters:
scheduleSpec - - specification containing the crontab schedule
context - - timer serive to use
beginState - - start state
observerEventEvaluator - - receiver for events
Method Detail

scheduledTrigger

public final void scheduledTrigger()
Description copied from interface: ScheduleCallback
Callback that is invoked as indicated by a schedule added to the scheduling service.

Specified by:
scheduledTrigger in interface ScheduleCallback

startObserve

public void startObserve()
Description copied from interface: EventObserver
Start observing.

Specified by:
startObserve in interface EventObserver

stopObserve

public void stopObserve()
Description copied from interface: EventObserver
Stop observing.

Specified by:
stopObserve in interface EventObserver