[jboss-dev] How can a project run in both AS 4.2.0 and AS 5.0?

[Dimitris Andreadis]

Adrian wrote:
> On Thu, 2007-07-19 at 17:48 +0300, Dimitris Andreadis wrote:
>> The real issue is to have as much as possible a single codebase. JBossWS uses a common 
>> "core" and different integration layers depending on the runtime (as40, as42, as50).
> 
> That is the wrong approach. It's not JBossWS's job to define how
> webservices integrate into JBossAS.
> 
> JBossAS should define a stable integration point, test it and JBossWS
> should implement it.

Sure, this is the right approach going forward (AS 5) but we don't (and most probably won't) 
have this API in 4.x, and so the need for the separate integration layer.

> 
> I'm currently going through the process of fixing AOP
> (which takes the same wrong approach)
> to use the new jboss-classloading-spi instead of
> "deep diving" into the UnifiedClassLoader.
> 
> For legacy reasons, it's difficult to fix the problem in 4.x
> (we can't change the api now it is released)
> but we can in JBoss5 and we can come up with something
> that is;
> 1) supportable for a long time.
> 2) makes it easier to understand what work
> needs to be done to integrate a project with
> other "platforms" - e.g. running JBoss Messaging inside Tomcat,
> Eclipse or a unit test, etc.
> 
> Oh no Tim! More platforms/versions to test. :-)