I have been assigned to unit-test a smaller j2ee-application and when researching this I came across Embedded JBoss. Am I certainly not a JBoss-expert but during the ongoing research I have learnt a lot of things about J2EE and Jboss and using Embedded JBoss makes the unit-testing of EJB3 components go smooth.

I have got most of the application working on Embedded JBoss during the research but I have now stumbled across a problem that I have difficulties solving.

The application is being bootstrapped with several Mbeans and this is working fine, but when one of the Mbeans is calling a method on a stateless session bean in its start()-method I get an IndexOutOfBoundsException.

What happens is that the Bootstrap-MBean is using dependency-injection with the @EJB-annotation to reach the stateless session bean, and this stateless session bean is using setter dependency injection with the @Depends annotation to be injected with another MBean. It is this injection that fails.

@Depends(CoreServiceLocator.MBEAN_EVENT_SUBSCRIBER)
public void setEventSubscriber(EventSubscriber subscriber) {
 this.eventSubscriber = subscriber;
}

Researching this gave me that the setter dependency injection in the stateless session bean is using the DependsMethodInjector-class to do the injection and in this class the line

MBeanServer server = (MBeanServer) MBeanServerFactory.findMBeanServer(null).get(0);

is throwing the IndexOutOfBoundsException.

Apparently using the MBeanServerFactory.findMBeanServer is not doing any good in Embedded JBoss since it returns an empty list. Removing the @Depends annotation and doing a JNDI-lookup for the MBean is solving the problem but since this is not my code and it is working when deployed on a JBoss 4.2.1 server I do not want to make this change.

I am currently researching this but something is missing and any pointers in the right direction would be very helpful.

Many thanks,
Fredrik