Confused about POJO service

[karypid]

Hello,

The new mc is probably the most feature-rich container out there. You can roll with anything from POJOs to MBeans. However, I am a little confused due to the multitude of options. My predicament is this:

I want to create a service to be deployed in JBoss. Until recently, I'd create a SAR and launch my thread in start(), then kill it in stop() of my MBean. I do this at deployment/undeployment time, so I do not really need the JMX features to control the service. Therefore I want to turn it into a POJO service and remove dependencies on MBean classes. How would you go about packaging such a POJO service so that:

1) it may be included in an EAR (The SAR approach requires that an MBean be defined in jboss-service.xml so it is no longer an option)

2) it executes on application startup / shutdown

[alesj]

Simply create a POJO - drop the MBean stuff - and place it any META-INF/somename-jboss-beans.xml.
See JBoss5 config files on how MC's schema looks like.

MC tries to execute create/start/stop/destroy parameterless methods on the bean by default if they exist.
So, just keep the start() and stop() and you're fine.

[karypid]

Would that be packaged in a JAR for JBoss to pick it up?

My current test (which does not get activated) is a JAR with one class and one interface (the interface defines the start/stop methods) as follows:

public class MyServiceImpl implements MyService {
 private Logger logger;

 public void start() {
 logger = LoggerFactory.getLogger(MyServiceImpl.class);
 logger.info("has been started");
 }

 public void stop() {
 logger.info("has been shut down");
 logger = null;
 }
}

It contains a META-INF/my-service-beans.xml as follows:

<?xml version="1.0" encoding="UTF-8"?>
<deployment xmlns="urn:jboss:bean-deployer:2.0">
 <bean name="MyService" class="test.MyServiceImpl" />
</deployment>

I drop it into the deploy folder (archived, not exploded) but nothing happens.

[karypid]

Ok, I got it. The deployment descriptor filename must be "jboss-beans.xml" otherwise the jar is ignored.

BTW, this is an opportunity to document in the forum the naming issue: When can you use a different filename? You mentioned it in your reply and I've also seen it in various articles (e.g. the DZone article).

Thanks for your help.

[alesj]

"karypid" wrote:

When can you use a different filename?

It depends on the BeanDeployer:
- http://anonsvn.jboss.org/repos/jbossas/projects/jboss-deployers/trunk/deployers-vfs/src/main/java/org/jboss/deployers/vfs/deployer/kernel/BeanDeployer.java