[jboss-dev] JBoss Messaging - to scope or not to scope

A major issue that is currently providing a barrier to adoption for JBoss Messaging and generally becoming a usability nightmare, is that JBoss Messaging depends on versions of JBoss Remoting and JBoss AOP that are more recent than those available in JBoss AS. This means when deploying JBM in the AS, the deployment has to be done as a scoped deployment in its own classloading domain. This also means that in some situations the entire MDB container needs to be scoped too. There is also a related problem that EJB3 (Carlo - may have fixed this recently) was using a different version of remoting to JBM causing them not to be able to work in the same client at the same time, - and of course scoping is not available on the client side. In short, scoping is a massive PITA for us. It contributes a huge number of support cases and forum queries since average Joe has great diffculty in working out how to do it. I would really love to get rid of the requirement to scope JBM altogether - this would give a massive boost to the project IMHO. How can we do this though? If we can ensure that the latest versions of AOP and Remoting are backward compatible with early versions then surely we can just overwrite the earlier versions in the AS when JBM is installed. Tom, Kabir can you comment on whether this is possible or desirable? If the versions are not compatible, how difficult would it be to make a few changes to remoting and aop to make them backward compatible? It's my understanding, that in AS 4.x it's only JBM, EJB3 and WS that use remoting, and only JBM that uses AOP - please correct me if I am wrong. (BTW scoping is not an issue in JBAS5 since we will align dependencies) What are people's views on this? Are there any issues I have not considered? Can anyone think of any other solution? -- Tim Fox JBoss Messaging Project Lead T: +44 2088006768 M: +44 7957983205 E: tim.fox(a)jboss.com tim.fox(a)redhat.com Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in UK under Company Registration No. 3798903 Directors: Michael Cunningham (USA), Charlie Peters (USA) and David Owens (Ireland) -- Tim Fox JBoss Messaging Project Lead T: +44 2088006768 M: +44 7957983205 E: tim.fox(a)jboss.com tim.fox(a)redhat.com Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in UK under Company Registration No. 3798903 Directors: Michael Cunningham (USA), Charlie Peters (USA) and David Owens (Ireland)