[webbeans-dev] Spec Conflicts Between JSR-299, JSR-318

[Andrew Lee Rubinger]

Hi guys.

In discussing WebBeans/EJB integration with Pete this week we came
across a few issues I'd like to hash out.

*Guiding Principles*

The points below are based on my view of the following bullets; please
correct if they're inaccurate.

* JSR-299 implementations are treated the same as any client of EJB;
they use/consume EJB as one of the target component models.
* A mechanism EJB makes available to JSR-299 should be available to
everyone.

----

1) EJB does not define an endpoint for SFSB removal outside
business/component method @Remove/remove() and timeout

JSR-299 PR2 6.5 - "When the destroy() method is called, the container
removes the stateful session bean. The @PreDestroy callback must be
invoked by the container."

JSR-318 PFD2 4.6 - "When the client calls a business method of the bean 
that has been designated as a Remove method, or a remove method on the 
home or component interface, the container invokes PreDestroy lifecycle 
callback interceptor method(s) (if any) for the bean instance after the
Remove method completes."

JSR-299 is declaring that "destroy" on a contextual object will invoke a 
removeal path not defined by EJB.

----

2) JSR-299 defines activity in the middle of EJB Lifecycle

JSR-299 PR2 6.11 - "When the EJB container creates a new instance of an 
EJB, the container must perform the following steps after Java EE 
injection has been performed and before the @PostConstruct callback 
occurs..."

EJB defines no callback mechanism for a hypothetical @PostInstanciated 
before @PostConstruct.  Thus there's no hook defined for WB to do its magic.

----

I'd like to open up discussion on either adding these points to EJB 3.1 
(a bit late in the game) or revising the JSR-299 spec such that it 
doesn't impose upon EJB.

Either way, as I've committed to Pete, I'll be taking on the EJB/WB 
integration bits.  But I do want to ensure the lines are properly drawn. 
  If properly scoped, we should have to alter no code under the EJB3 
components to support WB.

S,
ALR

-- 
Andrew Lee Rubinger
Sr. Software Engineer
JBoss, a division of Red Hat, Inc.
http://exitcondition.alrubinger.com