3 Replies Latest reply on Feb 8, 2008 4:10 AM by Michal Porzozynski

    Seam2 bug with Quartz?

    Nade Andrews Newbie

      Seam 2.0.0.GA, JBoss 4.2.1

      Hi, I'm fairly sure this is a Seam bug.

      I've set up an ObserveInitilization class as suggested by Pete Muir here: http://in.relation.to/Bloggers/DoingSomethingAtStartupWithSeam

      It looks like this:

      
      @Name("observeInitialization")
      public class ObserveInitialization {
      
       @In(create=true)
       Updater updater;
      
       @Observer("org.jboss.seam.postInitialization")
       public void start() {
       initialize(30 * 1000l);
       }
      
       @Asynchronous
       public void initialize(@Duration long durationInMilliseconds) {
       updater.update(new Date(), "0 0/3 * * * ?");
       }
      }
      
      


      The Updater class looks like this:

      @Name("updater")
      public class Updater {
      
       @In
       private EntityManager entityManager;
      
       @Logger
       private Log log;
      
       @Asynchronous
       public void update(@Expiration Date start, @IntervalCron String cron) {
       //...
       }
      }



      The issue is this code calls ThreadPoolDispatcher.scheduleWithExecutorService, which casts the return value of createSchedule to a TimerSchedule.

      Because I'm using an @IntervalCron the return value of createSchedule is a CronSchedule which extends Schedule, but not TimerSchedule, so I get a ClassCastException

      09:14:59,387 ERROR [[/admin]] Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener
      java.lang.ClassCastException: org.jboss.seam.async.CronSchedule
       at org.jboss.seam.async.ThreadPoolDispatcher.scheduleInvocation(ThreadPoolDispatcher.java:47)
       at org.jboss.seam.async.ThreadPoolDispatcher.scheduleInvocation(ThreadPoolDispatcher.java:29)
       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:585)
       at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
       at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
       at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:31)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
       at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
       at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:106)
       at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:155)
       at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:91)
       at org.jboss.seam.async.ThreadPoolDispatcher_$$_javassist_6.scheduleInvocation(ThreadPoolDispatcher_$$_javassist_6.java)
       at org.jboss.seam.async.AsynchronousInterceptor.aroundInvoke(AsynchronousInterceptor.java:38)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
       at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:106)
       at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:155)
       at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:91)
       at com.company.Updater_$$_javassist_5.update(Updater_$$_javassist_5.java)
       at com.company.ObserveInitialization.initialize(ObserveInitialization.java:29)
      


      I compared this to the Quartz example packaged with Seam.

      That example also calls createSchedule but as a parameter to QuartzDispatcher.scheduleWithQuartzService which accepts a Schedule, thus no ClassCastException.

      Has anyone else run into this?