Re: Using an interface between two dl'ed applications

On Mon, Jan 19, 2009 at 11:55 AM, Calum Shaw-Mackay
<[email protected]> wrote:
> Given a system 'A' that allows objects 'B' and 'C' to be deployed to it,
> where 'C' has an interface dependency on 'B'. Also 'B' and 'C" are
> independently deployed, with potentially different codebases, but with the
> same interface definition (compiled) in each.
>
> When 'C' requests access to 'B' via a dynamic proxy generated from the
> Interface declared in 'B's codebase, I get a ClassNotFoundException, I'm
> assuming that this is because B's classes are being declared in a different
> classloader to 'C's.

Are you talking a java.lang.reflect.Proxy, bytecode generated one or
something else?
I am not sure what you mean by "declared in different classloader to
C's". Is it in the same JVM? Otherwise, why do you mention it? (I know
you are not a novice... :-) )

If we are talking j.l.r.Proxy, is the InvocationHandler in B
serializable and its classes available to C? In JRMP, there is
explicit support for j.l.r.Proxy since it is not straight forward. The
Proxy from B should be reconstructed at JRMP level from the interface
classes and invocationhandler instance received from B using the RMI
Classloader in C for B's codebase.


Cheers
Niclas
-- 
http://www.qi4j.org - New Energy for Java

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