[cdi-dev] CDI have any plan to process Transaction?

[Dan Allen]

I molded this into a mini blog. Pete, if you are interested, feel free to
post this as it will likely solve a wider misunderstanding from going
around:

"A standard, universal @Transactional annotation is coming in Java EE 7.
However, there are some important things to keep in mind:

- @Transactional *is* being developed as a revision to the JTA spec (as an
MR)
- @Transactional *is not* being developed by the CDI EG, nor will it be in
the CDI spec
- Feedback on @Transactional should be sent to the Java EE platform EG
*not* to the CDI EG. The platform EG is conducting the revision to the JTA
spec.

Java EE does not recognize a Servlet container as a compliant environment
and therefore this feature will not be available there by default (mainly
due to the absence of JTA in this environemnt).

However, to bridge the divide, Weld and OpenWebBeans will both likely offer
support for @Transactional in a Servlet environment since we acknowledge
that it *is* important, and is an environment preferred by many developers
(but we still strongly urge you to migrate to the web profile!!)."

-Dan

On Mon, Apr 30, 2012 at 04:55, Pete Muir <pmuir at redhat.com> wrote:

> Just to be 100% clear, as there is a lot of confusion around this topic.
>
> * @Transactional *IS NOT* being developed by the CDI EG nor will it be in
> the CDI spec
> * @Transactional *IS* being developed as a revision to the JTA spec (as a
> MR IIRC, but that was not my/our decision to make)
> * Feedback on @Trasnactional should be sent to the Java EE platform EG NOT
> to the CDI EG. The platform EG is conducting the revision to the JTA spec.
>
> HTH!
>
> On 30 Apr 2012, at 09:19, Pete Muir wrote:
>
> >
> > On 29 Apr 2012, at 23:12, Dan Allen wrote:
> >
> >> Am I correct in saying that the annotation will control JTA
> >
> > Yes, this will be an amendment to the JTA spec AIUI. So back where it
> belongs!
> >
> >> and work in either of the two profiles (web and full)?
> >
> > We haven't discussed this, but I'm assuming both. I will raise this.
> >
> >>
> >> Btw, Java EE does not recognize a Servlet container as a compliant
> environment and therefore this feature will not be available there (without
> special support for it).
> >
> > Correct. Main obstacle is actually a lack of JTA there, rather than the
> declarative control… But I think OWB and Weld will both offer something
> here as we all regard it as important!
> >
> >>
> >> I agree with this stance since the web profile should be recognized as
> the low end environment. Otherwise there is not enough core services to
> provide a dependable and portable programming model. If you (general
> audience) want to use a Servlet container, you aren't using Java EE and
> will have to supplement with addons like CDI extensions or Spring.
> >>
> >> -Dan
> >>
> >> --
> >> Sent from my CyanogenMod-powered
> >> Android device, an open platform for
> >> carriers, developers and consumers.
> >>
> >> On Apr 27, 2012 4:54 AM, "Pete Muir" <pmuir at redhat.com> wrote:
> >> Java EE 7 will include @Transactional. This will be provided by the
> Java EE platform, rather than CDI specifically. It will be a CDI
> interceptor, and so enabled as other CDI interceptors are.
> >>
> >> On 24 Apr 2012, at 09:10, Hantsy Bai wrote:
> >>
> >>> Hi,
> >>>
> >>> I have read some content about the spec 1.1, but I want to know if
> there
> >>> is a plan to provide a new transaction annotation...for EBJ or none EJB
> >>> proramming.
> >>>
> >>> For example, provide a @Transactional annotation like Seam2 or Spring
> >>> 3.1...and make it work in Servlet container(none JTA transation, jdbc
> >>> only) or full profile container such as JBoss, Glassfish(JTA
> transaction
> >>> by default) seamlessly.
> >>>
> >>> Automatically detect the Transaction will be used, or configure in
> >>> beans.xml file.
> >>>
> >>>
> >>> Regards
> >>> Hantsy
> >>> _______________________________________________
> >>> cdi-dev mailing list
> >>> cdi-dev at lists.jboss.org
> >>> https://lists.jboss.org/mailman/listinfo/cdi-dev
> >>
> >>
> >> _______________________________________________
> >> cdi-dev mailing list
> >> cdi-dev at lists.jboss.org
> >> https://lists.jboss.org/mailman/listinfo/cdi-dev
> >
> >
> > _______________________________________________
> > cdi-dev mailing list
> > cdi-dev at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/cdi-dev
>
>


-- 
Dan Allen
Principal Software Engineer, Red Hat | Author of Seam in Action
Registered Linux User #231597

http://google.com/profiles/dan.j.allen
http://mojavelinux.com
http://mojavelinux.com/seaminaction
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