[jboss-user] [EJB/JBoss] - Re: Scheduler vs. EJB Timer Service
torf
do-not-reply at jboss.com
Fri Jan 12 06:53:49 EST 2007
Hi,
this is our Schedulable implementation:
| package de.mobilcom.messenger.scheduler;
|
| public class TimedObjectSchedulableRemote implements Schedulable {
| private String sRemoteHomeName;
| private our.company.framework.timer.TimedObjectRemote rTimedObject;
|
| // will be invoked by jboss with configured arg "ejb/MySchedulerTimer"
| public TimedObjectSchedulableRemote(String sRemoteHomeName) {
| this.sRemoteHomeName = sRemoteHomeName;
| }
|
| public void perform(Date rDate, long nValue) {
| try {
| if (rTimedObject == null) {
| // get MySchedulerTimer SLSB's home
| Context rInitialContext = new InitialContext();
| Object rHome = rInitialContext.lookup(sRemoteHomeName);
|
| // call rHome.create() via refection to obtain remote SLSB instance
| Method rMethod = rHome.getClass().getDeclaredMethod("create", new Class[0]);
| rTimedObject = (our.company.framework.timer.TimedObjectRemote)
| rMethod.invoke(rHome, new Object[0]);
| }
|
| // call SLSB business method
| rTimedObject.onTimeout();
| }
| catch (Exception eEx) {
| ... // logging
| rTimedObject = null; // reset invalid timed object reference
| }
| }
| }
|
Every SLSB intended for invocation via Scheduler implements interface our.company.framework.timer.TimedObjectRemote whose only method is void onTimeout() throws RemoteException.
HTH,
Christoph
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