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From Thomas Marsh <mars...@nitesco.com>
Subject Re: commons messenger
Date Fri, 22 Mar 2002 00:43:36 GMT
James / List:

We're about to start experimenting with MQ Series, Websphere AE, and
possibly commons messenger, and was wondering if the messenger objects
can participate in transactions (XA?) ? I.E. If I consume a message in a
session EJB, and something goes wrong, can I rollback the transaction so
the message remains on the queue?

I've been looking at the commons messenger code, but it hasn't
completely sunk in yet....

Thanks for your help!

Tom


James Strachan wrote:
> 
> ----- Original Message -----
> From: "Thomas Marsh" <marsht1@nitesco.com>
> > James:
> >
> >
> >
> > James Strachan wrote:
> > >
> > > Hi Thomas
> > >
> > > From: "Thomas Marsh" <marsht1@nitesco.com>
> > > > All:
> > > >
> > > > I didn't see a -user list for commons, so I'm posting this here. If
> > > > there is a better place to post this, please let me know.
> > >
> > > This is the best place to post.
> > >
> > > > Has anyone used commons messenger with IBM's MQSeries?
> > >
> > > Not yet AFAIK - though modifying the Messenger.xml config file a little
> and
> > > it should work fine with MQSeries - if you get it working let us know
> and we
> > > can add the MQ config file to CVS. We've already got config files for
> > > JBossMQ, SpiritWave and AshnaMQ.
> > >
> > > > I'm working on a project which will use IBM Websphere 4.0 Advanced
> > > > Edition, which supports EJBs, but not MDBs.
> > >
> > > Should be fine. Though if you're building a mostly EJB based system then
> > > maybe MDBs might help - its worth taking a look at them. If you can't
> use
> > > MDBs for any reason then Messenger is a great (simple) alternative
> without
> > > requiring an EJB2.0 container - it'll work just fine in Tomcat.
> >
> > I'm thinking that messenger will provide me an alternative to using MDBs
> 
> It will. In the messenger project its called MDO, Message Driven Objects as
> opposed to MDB (Message Driven EJB). All the subscriptions are then put in
> an XML deployment document.
> 
> > > > I figured we would have to write a listener, which would then pass off
> > > > the message ID to a SLSB
> > >
> > > Whats an SLSB?
> >
> > Sorry. A stateless session bean. I've been reading the Sun EJB interest
> > list too much lately....
> 
> :) Ah thanks.
> 
> James
> 
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-- 
Tom Marsh

mailto:marsht1@nitesco.com
http://www.nitesco.com

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