Java EE 6: controlling startup of managed beans with dependencies: CDI, EJB

Question

I just read the very nice explanation of the various managed beans and their relations on Java EE 6 @javax.annotation.ManagedBean vs. @javax.inject.Named vs. @javax.faces.Ma

Answer 1

Excerpt from Java EE 6 Tutorial with some modifications:

@Singleton
@Startup
public class BeanA { ... }

@Qualifier
@Target({FIELD, PARAMETER})
@Retention(RUNTIME)
public @interface EjbStarted {}

@Singleton
@Startup
@DependsOn("BeanA", "BeanB", "BeanC")
public class LastBean {
    @Inject @EjbStarted Event<String> event;

    @PostConstruct
    public void startService() {
        // At this moment PrimaryBean is ready for use
        event.fire("LastBean");
    }
}

public class CDIService {
    public void start(@Observes @EjbStarted String name) {
        if("LastBean".equals(name)) {
            startService();
        }
    }
}

UPDATE: While thinking about the problem, I somehow forgot that you want the initialization order in CDI beans, so the answer is somewhat out of context, sorry about that :)

UPDATE 2: Added how to make a CDI service start after EJBs