Spec for implementing controls features via interceptors

[Ken Tam <ke...@bea.com>]

There are a number of controls features we're interested in
implementing, such as @MessageBuffer and @Security, that involve:

1) Exposing a feature via new annotations in controls source files.
2) The need to provide container-specific implementations of those
features.

I've written a spec proposing the addition of an interceptor mechanism
to the controls infrastructure to enable such features, using
@MessageBuffer as an example.  Please see:

http://wiki.apache.org/beehive/Controls/AnnotationBasedFeatures

Feedback would be great, especially from anyone interested in
contributing to controls wrt adding features that could/would leverage
this mechanism.

Thanks!