On Tue, Nov 24, 2009 at 12:03 PM, Reza Rahman <reza_rahman(a)lycos.com> wrote:
Dan,
Personally, I think the most elegant solution in terms of Java EE is
simply to standardize "promotable" transactions. Specifically, JTA could
be modified to use local transactions by default and only promote
transactions to distributed mode as the need arises. The Microsoft guys
have had promotable transactions for ages, I am not sure why we don't
have it in Java EE too. This would make the "lightweight" vs
"heavyweight" debate moot and keep things simple/consistent from a
developer's perspective while most of the systems-level issues are dealt
by the container where these things belong instead of a steady leak as a
development concern.
I'd like to read more about it. One way or another, we have to figure out
why we feel the need to introduce "non-Java EE" persistence and transaction
support in Seam 3. The technical reason is because you can't have an EJB in
a servlet container environment. If we could have a portable transactional
managed bean in a servlet container, then we'd be good. Otherwise, we have
to layer Seam 3 on top again.
-Dan
--
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