[Springframework-developer] remote invocation

[Vladimir B. <vla...@cs...>]

Hi,

I posted this question on help forum but maybe this list is a more
appropriate venue for the discussion.

It seems that there is no current built-in API to specify additional
invocation parameters. Here is why. RemoteInvocationWrapper is an object
that accepts remote calls and tunnels them to a wrapped service object.
RemoteInvocationWrapper is bound to Registry and has a specific signature
- public Object invokeRemote(String methodName, Class[] paramTypes,
Object[] params) - that is matched by RemoteInvocationHandler.
RemoteInvocationhandler on a client side is in turn wrapped by
RmiClientInterceptor which directs calls from client intereface to the
RemoteInvocationHandler. Very nice, except that invokeRemote signature.

I remember that in Jboss days the problem of additional invocation
parameters was solved by an abstract Invocation interface that had a
couple of predefined properties (method,paramTypes, params)as well as a
map for custom properties. So instead of the above mentioned method
signature you would pass a more abstract Invocation object from client to
server.

Then you can add custom interceptors on both client and server and
customize invocation with additional parameters. For example, a client
interceptor prior to marshalling invocation could strap on user's
Principal and a server interceptor could access that principal in a
matching interceptor on the server?

Any comments?

Regards,
Vladimir