How is the schedulable registered with the scheduler?
-- xxxxxxxxxxxxxxxxxxxxxxxx Scott Stark Chief Technology Officer JBoss Group, LLC xxxxxxxxxxxxxxxxxxxxxxxx
Scheil, Sven wrote:
i repost my question, because i found no solution :-( should i post more detailed information?
does anyone have experience in deploying schedulable mbeans as trigger for an slsb?
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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