we are using jboss 3.2.2, win 2k, mySQL 4.0.13.
I've developed a simple implementation of the Schedulable interface. Packed
it into a sar together with a jboss-service.xml. This sar is packed into the
ear (together with a jboss-app.xml) of my application that should be
triggered by the Scheduler. Deploying the ear with the DueDateScheduler
mbean works great for the first time. But when I'm redeploying the ear I get
a java.lang.ClassCastException every time the Scheduler is called:
2003-11-17 15:49:20,799 ERROR
[com.cargosoft.scmtool.server.services.mbean.DueDateScheduler]
DueDateScheduler::perform(date, param) 4711 abgebrochen:
java.lang.ClassCastException
at
com.sun.corba.se.internal.javax.rmi.PortableRemoteObject.narrow(PortableRemo
teObject.java:293)
at
javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:134)
at
com.cargosoft.scmtool.server.services.mbean.DueDateScheduler.getTimeSchedule
r(DueDateScheduler.java:49)
at
com.cargosoft.scmtool.server.services.mbean.DueDateScheduler.perform(DueDate
Scheduler.java:37)
at
org.jboss.varia.scheduler.Scheduler$Listener.handleNotification(Scheduler.ja
va:1263)
at
org.jboss.mx.server.NotificationListenerProxy.handleNotification(Notificatio
nListenerProxy.java:69)
at
javax.management.NotificationBroadcasterSupport.sendNotification(Notificatio
nBroadcasterSupport.java:95)
at javax.management.timer.Timer.sendNotifications(Timer.java:441)
at javax.management.timer.Timer.access$000(Timer.java:31)
at
javax.management.timer.Timer$RegisteredNotification.doRun(Timer.java:612)
at
org.jboss.mx.util.SchedulableRunnable.run(SchedulableRunnable.java:164)
at org.jboss.mx.util.ThreadPool$Worker.run(ThreadPool.java:225)
Even when I restart the Scheduler mbean via jmx-console the errore stays the
same. Only a restart of the server (with the ear ramining deployed) is a way
out of this problem. But I can't restart our production server every time I
update the application!
What did I wrong? Any hints?
Thanks in advance...
Source:
public class DueDateScheduler implements Schedulable {
protected static Logger logger;
{
logger = Logger.getLogger(DueDateScheduler.class);
}
private String testArg;
public DueDateScheduler(String arg0) {
testArg = arg0;
}
public void perform(java.util.Date date, long param) {
try {
getTimeScheduler().checkDueDates();
logger.info("DueDateScheduler::perform(date, param) " + testArg
+ " ausgef�hrt");
}
catch (Exception ex) {
logger.error("DueDateScheduler::perform(date, param) " + testArg
+ " abgebrochen:", ex);
}
}
private TimeScheduler getTimeScheduler() throws Exception {
Context ctx = getJBossInitialContext();
Object ref = ctx.lookup("SCMTool/TimeScheduler");
TimeSchedulerHome timeSchedulerHome = (TimeSchedulerHome)
PortableRemoteObject.narrow(ref, TimeSchedulerHome.class);
return timeSchedulerHome.create();
}
private javax.naming.Context getJBossInitialContext() throws
NamingException {
java.util.Hashtable JNDIParm = new java.util.Hashtable();
JNDIParm.put(Context.PROVIDER_URL, "localhost");
JNDIParm.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
return new InitialContext(JNDIParm);
}
}
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