Hi All,

I have implemented a statlessBean with Timer service. The timer is getting created without any issue, but when the @Timeout method is getting invoked I am getting the below excetion:

ERROR [org.jboss.ejb.txtimer.TimerImpl] (EJB-Timer-ee98a936-c65a-4bbb-b697-93f88ca37f1c[target=jboss.j2ee:ear=app.ear,jar=app.backend.jar,name=AssetCreationCompleteTimer,service=EJB3]) Error invoking ejbTimeout

java.lang.NullPointerException

        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.aop.joinpoint.MethodInvocation.invokeTarget(MethodInvocation.java:122)

        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:111)

        at org.jboss.ejb3.stateless.StatelessContainer.callTimeout(StatelessContainer.java:682)

        at org.jboss.ejb3.stateless.StatelessContainer.callTimeout(StatelessContainer.java:199)

        at org.jboss.as.ejb3.timerservice.TimedObjectInvokerBridge.callTimeout(TimedObjectInvokerBridge.java:44)

        at org.jboss.ejb.txtimer.TimerImpl$TimerTaskImpl.run(TimerImpl.java:664)

        at java.util.TimerThread.mainLoop(Timer.java:512)

        at java.util.TimerThread.run(Timer.java:462)

My looks like:

@Stateless

@LocalBinding(jndiBinding = "com.app.backend.maintenance.AssetCreationCompleteTimerLocal")

public class AssetCreationCompleteTimer implements AssetCreationCompleteTimerLocal {

  @PersistenceContext(unitName = "unitName")

  private EntityManager entityManager;

  @Resource(mappedName = "java:/JmsXA")

  private QueueConnectionFactory queueConnectionFactory;

  private final Logger log = LoggerFactory.getLogger(getClass());

  @Resource

  private SessionContext sessionContext;

  @Override

  public void scheduleNextExecution(Date dateToExecute, boolean isCancelExisting) {

    TimerService timerService = sessionContext.getTimerService();

    for (Object o : timerService.getTimers()) {

      if (o instanceof Timer) {

        Timer timer = (Timer) o;

        // if current Date is greater than or after the existing timers next run date, cancel inactive timer

        if (new Date().after(timer.getNextTimeout())) {

          timer.cancel();

          continue;

        }

        // if date to schedule next run is less than or before the existing timers next run date, cancel the current timer

        // only if isCancelExisting is set to true. This done to ensure that timers don't get re-scheduled on an earlier date unless specifically intended.

        if (dateToExecute.before(timer.getNextTimeout())) {

          log.info(String.format("%s job is already scheduled for %tc", getClass().getSimpleName(), timer.getNextTimeout()));

          if (isCancelExisting) {

            log.info(String.format("Cancelling the timer for %s which was scheduled to run at %tc ...", getClass().getSimpleName(), timer.getNextTimeout()));

            timer.cancel();

          }

        }

      }

    }

    if (timerService.getTimers().isEmpty()) {

      log.info("Creating Timer with Date {} : Class {}", dateToExecute, getClass().getSimpleName());

      timerService.createTimer(dateToExecute, null);

      log.info("Timer created for Class : {}", getClass().getSimpleName());

    }

  }

  @Timeout

  public void onTimeOut(Timer timer) {

    log.info("Timeout triggered ....");

    Calendar nextRun = Calendar.getInstance();

    nextRun.add(Calendar.MINUTE, 0);

    nextRun.add(Calendar.SECOND, getExecutionIntervalSeconds());

    //String message = String.format("Next execution scheduled for %tc", nextRun);

      log.info("Starting execution of {}", getClass().getSimpleName());

      execute(); // exceute logic

  }

}

My application is deployed in JBOSS 5.1.

Please help.

Regards

Arnab