Re: [deployment] Fwd: RE : [fractal] packaging for Fractal

[Petr Hnetynka <hnetynka@xxxxxxxxxxxxxxxxxxxx>]

> Indeed, we need a mean to instantiate several versions of the same
> component in a JVM. We have started looking at this issue.
> More precisely, we try to determine how Rick Hall's Module Loader
>  could be used to reach this goal. The fact is that a given component
>  must be associated to several modules, so that it will be possible
>  to change part of its interfaces and implementation classes.

The instantiation of multiple versions of the same component in the same JVM is 
solved and implemented in SOFA (http://sofa.objectweb.org/index.phtml). The name 
clashes are solved via byte code manipulation using ASM.

The general approach is described in the paper "Hnetynka, P., Tuma, P.: Fighting 
Class Name Clashes in Java Component Systems, Proceedings of JMLC 2003, 
Klagenfurt, Austria, August 2003".

Also, I had a talk about this approach on the ObjectWeb meeting in April last 
year (http://www.objectweb.org/phorum/read.php?f=16&i=24&t=24).

Petr Hnetynka