Experts,
This is the email and the revised proposal on alignment of EJB, JMS, and
JCA specs in the MDB configuration areas.
Please read carefully the email and the proposed changes and let me and
Nigel (who is on the users alias) know if you agree with the proposal or
not (and if not, the why).
thanks,
-marina
-------- Original Message --------
Subject: [jms-spec users] [jsr343-experts] Proposals for MDB and RA
standardisation (JMS_SPEC-30,55,54,25,73)
Date: Fri, 29 Jun 2012 18:59:23 +0100
From: Nigel Deakin <nigel.deakin_at_oracle.com>
Reply-To: jsr343-experts_at_jms-spec.java.net
To: jsr343-experts_at_jms-spec.java.net
This email covers a number of related issues, all covered in the attached document.
Some time ago we discussed and agreed on a number of changes that we would like to see made to the EJB spec to
standardise the way in which JMS MDBs were configured. Here are the JIRA issues:
http://java.net/jira/browse/JMS_SPEC-30
Define mandatory activation config properties for JMS MDBs
http://java.net/jira/browse/JMS_SPEC-55
Define a standard way to configure the connection factory used by a JMS MDB to consume messages
http://java.net/jira/browse/JMS_SPEC-54
Define a standard way to configure the destination on which a JMS MDB consumes messages
I have spent quite a lot of time negotiating with the EJB spec lead about the details of these changes and have now come
to provisional agreement, though these change have yet to be confirmed by the EJB EG. The attached document contains a
summary of what we agreed. I would now like to bring these proposals back to the JMS EG for comments.
Separately, also agreed in principle even longer ago that we should standardise the interface between a JMS provider and
a Java EE application server by making it mandatory for a JMS vendor to provide a JCA resource adapter. Here is this
JIRA issue:
http://java.net/jira/browse/JMS_SPEC-25
Standardise the interface between a JMS provider and a Java EE application server
However if we're going to standardise on MDB configuration we also need to standardise on ActivationSpec properties. The
attached document also contains some proposals to define a JMS resource adapter as part of the JMS specification. This
essentially consists of moving the section on JMS resource adapter out of the JCA 1.6 spec, adding it to the JMS spec,
and adding some additional properties.
Finally, on 15th June I raised this new issue:
http://java.net/jira/browse/JMS_SPEC-73
Define how messages from a topic are delivered to clustered application server instances
I made some provisional proposals to address this here
http://java.net/projects/jms-spec/lists/jsr343-experts/archive/2012-06/message/7
I haven't received any comments on that email. However since these proposals involve the standardisation of an
additional ActivationSpec property, and the container making varius pieces of information available to the resource
adapter, I thought it helpful to combine these proposals within this document as well.
So please have a look at the attached document and make any comments. I'm not setting a deadline for comments but it
would be really helpful if you could have a look within the next week or so. If it's not obvious why I've made a
particular proposal please do ask and I'll try to explain.
I know we're approaching the vacation season, and it's the 4th July next Wednesday as well.
If this EG is generally happy with this document I plan to turn this document (except for the parts that go into the EJB
spec) into a new chapter for the JMS spec.
Thanks,
Nigel