Adam Bien's Weblog

2. An event has to be fired by an injected javax.enterprise.event.Event class. It can be injected into an EJB 3.1:

@Named("messenger")

@Stateless

public class HelloMessenger {

    @Inject Event<HelloEvent> events;

    public void hello(){

        events.fire(new HelloEvent("from bean " + System.currentTimeMillis()));

    }

} 

3. The event can be consumed by another Session Bean / managed bean. You only have to use the @Observes annotation: 

@Stateless

public class HelloListener {

    public void listenToHello(@Observes HelloEvent helloEvent){

        System.out.println("HelloEvent: " + helloEvent);

    }

}

4. You can access the EJB 3.1 directly - without any backing beans. You only have to use the name (messenger) from the @Named annotation in the JSF 2.0 page and bind the action to the method (hello()) name:

    <h:body>

        <h:form>

            <h:commandButton value="Fire!" action="#{messenger.hello}"/>

        </h:form>

[...] 

The project (CDIEJB3Events) was implemented in few minutes with NetBeans 6.8, tested with Glassfish v3 and pushed into: http://kenai.com/projects/javaee-patterns/. The entire WAR (JSF 2.0 , EJB 3.1, CDI) is 8 kB small. The initial deployment took (897 ms): 

INFO: Initializing Mojarra 2.0.2 (FCS b10) for context '/CDIEJB3Events'

INFO: Loading application CDIEJB3Events at /CDIEJB3Events

INFO: CDIEJB3Events was successfully deployed in 897 milliseconds.