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1. Re: NPE: quartzTriggerHandle.cancel()
allforjava.allforjava.aol.in Jan 30, 2010 12:55 PM (in response to allforjava.allforjava.aol.in)Code snippet:
@Name("timer") public class Timer{ @In Processor processor; private QuartzTriggerHandle handle; public void start(){ processSchedule(); } public void stop() throws SchedulerException{ handle.cancel(); } public void pause() throws SchedulerException{ handle.pause(); } public void resume() throws SchedulerException{ handle.resume(); } public void processSchedule(){ Date start = new Date(); Calendar end = Calendar.getInstance(); end.set(2010, Calendar.MAY, 10); handle = processor.schedule(start,1000*10L,end.getTime()); display(handle); } private void display(QuartzTriggerHandle triggerHandle){ System.out.println("Handle: "+triggerHandle); Scheduler scheduler = QuartzDispatcher.instance().getScheduler(); try { System.out.println("Groups: "+scheduler.getJobGroupNames()); System.out.println("Defualted Jobs: "+scheduler.getJobNames(Scheduler.DEFAULT_GROUP)); } catch (SchedulerException e) { e.printStackTrace(); } } }
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2. Re: NPE: quartzTriggerHandle.cancel()
kapitanpetko Jan 30, 2010 2:01 PM (in response to allforjava.allforjava.aol.in)Stack trace?
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3. Re: NPE: quartzTriggerHandle.cancel()
allforjava.allforjava.aol.in Jan 30, 2010 2:52 PM (in response to allforjava.allforjava.aol.in)Thank you for quick response. Stack trace for stop():
19:24:46,452 INFO [STDOUT] Handle: org.jboss.seam.async.QuartzTriggerHandle@5a9737 19:24:46,452 INFO [STDOUT] Groups: [Ljava.lang.String;@17da237 19:24:46,452 INFO [STDOUT] Defualted Jobs: [Ljava.lang.String;@124d0d3 19:24:46,546 INFO [STDOUT] Schedule Triggerred: 1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 19:25:07,568 SEVERE [application] java.lang.NullPointerException javax.faces.el.EvaluationException: java.lang.NullPointerException at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102) at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) . . . Caused by: java.lang.NullPointerException at adr.scheduler.workout.Timer.stop(Timer.java:50) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.jboss.seam.util.Reflections.invoke(Reflections.java:22) . . . Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102) at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) ... 52 more Caused by: java.lang.NullPointerException at adr.scheduler.workout.Timer.stop(Timer.java:50) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) . . 19:25:07,599 SEVERE [lifecycle] JSF1054: (Phase ID: INVOKE_APPLICATION 5, View ID: /views/timer.xhtml) Exception thrown during phase execution: javax.faces.event.PhaseEvent[source=com.sun.faces.lifecycle.LifecycleImpl@1427c43] 19:25:16,448 INFO [STDOUT] Schedule Triggerred: 1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890
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4. Re: NPE: quartzTriggerHandle.cancel()
kapitanpetko Jan 30, 2010 3:36 PM (in response to allforjava.allforjava.aol.in)This has nothing to do with Quartz, if you want to save state for longer than a method call you need to use conversation or session scope. Your Timer component is not event-scoped (default), that is why it loses state after the first call.
HTH
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5. Re: NPE: quartzTriggerHandle.cancel()
allforjava.allforjava.aol.in Jan 30, 2010 4:01 PM (in response to allforjava.allforjava.aol.in)Thank you Nikolay! It works.
I over-looked the post http://seamframework.org/Community/QuartzTriggerHandleIsNull#comment100039
Any usage examples for QuatzDispatcher scheduleTimedEvent(), etc.