[weld-dev] persistence and transactions outside Java EE

[Gavin King]

I don't see why would want to introduce a new kind of thing. Just let  
managed beans have declarative txns.

Sent from my iPhone

On Nov 24, 2009, at 11:37 AM, Dan Allen <dan.j.allen at gmail.com> wrote:

> I was talking to someone about this topic post-Devoxx. I came up  
> with an idea that may be worth considering. Perhaps the Java EE  
> platform can recognize another class of bean that has persistence  
> and transaction capabilities, but not the rest of EJB. Here's my  
> proposed breakdown, in terms of airplane seat classes (I was on an  
> airplane at the time).
>
> First class - EJB session bean
> Business class - local transactional bean
> Coach - Simple managed bean
>
> The main differientiator of a "business class bean" from an EJB is  
> that it would have the option to use local transactions, just like  
> an application-managed JPA persistence unit. It would also not  
> support any HA concerns. But it would be a drop in replacement for  
> so-called "lightweight" transaction beans that Spring offers.
>
> Then, we wouldn't need to do anything special in Weld / Seam 3. All  
> we would need is to be able to support these types of beans in a  
> servlet container, the same way that Weld supports those  
> environments. But it would be a standard part of Java EE (6 MR1 or 7).
>
> If we feel like we need to support this use case in Seam, then  
> clearly there is still something missing in Java EE.
>
> -Dan
>
> On Wed, Nov 18, 2009 at 6:10 PM, Gavin King <gavin.king at gmail.com>  
> wrote:
> I think we should try and follow the Java EE models as closely as
> possible for this stuff. We should simply try and make the Java EE
> code work outside EE 6.
>
> e.g.
>
> (1) use a resource declaration with @PersistenceContext(unitName=....)
> to define a managed persistence context
> (2) use JBoss Transactions to manage transactions in a servlet engine
> - so instead of having a special tx manager for JDBC, it is just JTA
>
> Or is the 10meg download for JBoss Transactions just no good?
>
> --
> Gavin King
> gavin.king at gmail.com
> http://in.relation.to/Bloggers/Gavin
> http://hibernate.org
> http://seamframework.org
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>
>
>
> -- 
> Dan Allen
> Senior Software Engineer, Red Hat | Author of Seam in Action
> Registered Linux User #231597
>
> http://mojavelinux.com
> http://mojavelinux.com/seaminaction
> http://www.google.com/profiles/dan.j.allen
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