EJB's as XMBeans (also known as Dave's plan for world domination:-) We've claimed for a long time that in JBoss ejb's are mbeans. Well, they sort of are, but the container is the mbean, and it calls an interceptor chain and ends up maybe doing something with one of a bunch of objects from a cache or pool.
Meanwhile the mbeans have their own interceptor stack, with a slightly different interpretation of interceptor, and end up calling methods on a single object at the end of the stack. There's a lot of confusing functionality duplication here, and the interceptor incompatibilities make regular mbeans kind of incompetent compared to ejbs (no tx and security for instance). Here's what I propose to do: 1. change all the ejb interceptors so they only have an invoke method, no invokeHome. The kind of invocation is already carried in the invocation object, 2 methods are silly. 2. Introduce service lifecycle into the mbean interceptors. I think this is best done by 2.a including the service lifecycle methods in the interceptor interface 2.b writing a lifecycle interceptor that fishes lifecycle methods out of the invocation stream and runs them through the stack. This is similar to how the attribute interceptor fishes attribute access messages and redispatches them as operations through the entire stack. Presumably this lifecycle interceptor (or a subclass) can take over the functions of ServiceContext (keeping track of mbean dependencies) and ServiceController (managing the lifecycle operations while respecting the mbean dependencies). 3. Investigating how an mbean can work off a pool/cache of objects rather than a single object. This is probably just a deployment detail. So, Does anyone object to this? Is anyone else working on something similar or conflicting with this? thanks david jencks ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Jboss-development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
