> PC propagation rules won't be applicable when you use
> different EMF in
> caller and called components.
Hi Sahoo,
Thanks for the reply.
True, I already agree as "If a stateful session bean with an extended persistence context calls a stateful session bean with a different extended persistence context in the same transaction, an IllegalStateException would be thrown." Now can I infer from this that I can't access different configured data source(defined in different <persistence-unit> element in persistence.xml -> creation of different EMF -> different Persistence Context)?
With Regards,
Mayank
Have you tried doing
> this? Are you seeing
> any error?
>
> Thanks,
> Sahoo
> glassfish_at_javadesktop.org wrote:
> > Hi Sahoo,
> >
> >> Propagation of JTA transaction across session
> beans
> >> is independent of
> >> use of JPA. Since you use different EMFs in those
> >> session beans, you
> >> would be using different persistence contexts in
> each
> >> of those bean's
> >> context. Did it answer your question?
> >>
> >
> > That's my question, In the case I have different PC
> among locally caller and called SFSB. But the
> propagation requires the same PC, right? In other
> words, If a stateful session bean with an extended
> persistence context calls a stateful session bean
> with a different extended persistence context in the
> same transaction, an IllegalStateException would be
> thrown.
> >
> > Am I missing something here, as then I will not be
> able to use a different PC of an EMF configured for
> different data source.
> >
> > Take a look at
> >
> >> [1] for an example
> >> of PC propagation.
> >>
> >
> > I had a look at your explanation in the blog, I
> must say it is very informative, my question is
> related somewhat to rule#5. I guess, your example
> uses the same datasource in the transaction of
> ReportServlet where it calls the UCM Bean.
> >
> > With Regards,
> > Mayank
> >
> >
> >
> >
> >> Thanks,
> >> Sahoo
> >> [1]
> >>
> http://weblogs.java.net/blog/ss141213/archive/2006/10/
> >> persistence_con.html
> >> glassfish_at_javadesktop.org wrote:
> >>
> >>> As per JPA Spec section 5.6.3, "A single
> >>>
> >> persistence context may correspond to one or more
> JTA
> >> entity manager instance (all associated with the
> same
> >> entity manager factory).
> >>
> >>> Now, If I require a JTA transaction to be
> >>>
> >> propagated among Stateful sesion beans and each
> >> session bean is using different datasources (hence
> >> having different persistence-units in same or
> >> different 'persistence.xml' file and hence
> different
> >> EMFs)
> >>
> >>> How am I going to acheive this using JPA?
> >>>
> >>> With Regards,
> >>> Mayank
> >>> [Message sent by forum member 'mayankmishra'
> >>>
> >> (mayankmishra)]
> >>
> >>>
> >>
> http://forums.java.net/jive/thread.jspa?messageID=2152
> >> 18
> >>
> >>>
> >>
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> 14
> >
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