[cdi-dev] JMS 2.1: Proposal to allow any CDI managed bean in a Java EE application to listen for JMS messages

[Nigel Deakin]

On 24/08/2015 21:24, John D. Ament wrote:
>
> Hi Nigel!
>
> Glad to hear from you.  Was wondering, is there a way to manually register listeners?

The current proposal is is for the bean to start listening just as soon as it is created (by CDI), and for it to stop 
listening just before it is destroyed (by CDI).

As you suggesting that CDI would create the listener, but the application would call some method to tell it to start 
listening? or did you have something else in mind?

 > It would be great if this could
> be leveraged in a CDI SE environment as well as EE environment.

I see that work is underway for CDI 2.0 to define how CDI might work in a Java SE environment. I don't see why a similar 
portable extension could not be created for use in Java SE. Since there would be no need to support Java EE behaviour 
such as transactions this could be built directly on top of the JMS provider's Java SE client. No need to use a resource 
adapter. However since the @JMSListener and @JMSConnectionFactory annotations use JNDI there would be a need to be a way 
to specify which JNDI InitialContext to use. I'm not proposing any of this at the moment, but it might perhaps be 
something that we (the JMS expert group) could consider later on as a optional part of JMS 2.1.

There's also the Java EE application client to consider.

Nigel