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Re: [eclipselink-dev] 2.1 Design doc for JMS-MDB cache coordination
Hi Chris,
    I suppose eclipselink creates a session for the Persistence-Unit-Name that is mentioned in the persistence.xml(if not, then I would suggest that it should); hence it should be sufficient to mention the persistence-unit-name in the MDB to get the instance of RemoteCommandManager.
Hence, the following actions may not be required:
 
Example MDB’s getSession requires the session name be defined in the ejb-jar.xml under a “tl_session_name_for_mdb” property.
  • JPA users will need to either
    • define a unique session name in persistence.xml using <property name="eclipselink.session-name" value="MySession"/>
    • deploy their own MDB and use EM injection or Persistence.getEntityManagerFactory and the JPAHelper to get the session

How about facilitating the cache co-ordination configuration through persistence.xml, perhaps via extended properties, for JPA users? I could not find that info in the document listed in the mail thread

I would recommend keeping the reference implementation of MDB as a seperate download so as to avoid the dependency on EJB MDB classes.
Please remember that Eclipselink is also used in Java SE environments where EJB is not an available option.
 
I hope my concerns will be understood and a more JPA friendly solution will be evolved,
 
Thanks and Regards,
Samba

 
On Fri, Jan 29, 2010 at 1:48 PM, christopher delahunt <christopher.delahunt@xxxxxxxxxx> wrote:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=214534
Patch uploaded for review and feedback


Best Regards,
Chris


christopher delahunt wrote:
Design documentation can be found here:

http://wiki.eclipse.org/EclipseLink/Development/2.1/JMSCacheCoordinationUsingMDB <http://wiki.eclipse.org/EclipseLink/Development/JPA_2.0/undelimited_identifiers>

Please provide feedback either by replying to this email or using the Wiki discussion page.

Thanks,
Chris
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