AuthInvoker class - comments?

[Ellers]

Hi all
The company I work for has been ramping up its use of XML-RPC lately - 
there's really a lot of activity going on there now :)

We need to use authenticated connections at the office, although we 
don't need SSL (we just need to know who did what, not that it be 
encrypted).

I may have missed something, but I think there is a need for an 
"AuthInvoker" class.

Normally I can define a handler class, like this:
  public class SimpleHandler {
    public double add( double a, double b ) {
      return a+b;
    }
  }
And then add this class to be a handler as:
  SimpleHandler handler = new SimpleHandler( );
  m_webserver.addHandler ("simple", handler );
Works great.
I can even connect to the server using normal authentication and the 
handler gets called no problem. However, there is no way for the handler 
to get the user/password data, or any other context information.

99% of what I need is in the package - including a XmlRpcContext interface.
But I couldn't see a way for my handler to have access to the context 
information.

So I added AuthInvoker, by copying the Invoker class and changing about 
8 lines.

Now, the SimpleHandler looks like this:
import org.apache.xmlrpc.*;
public class SimpleHandler {
  //
  // NOTE: use of XmlRpcContext object
  //
  public String add( double a, double b, XmlRpcContext context ) {
    double result = a + b;
    // show both the supplied parameter, and the authenticated
    String r
      = "Hi '"
      + context.getUserName()
      + "', identified by '"
      + context.getPassword()
      + "'. The result of "
      + a
      + " + "
      + b
      + " = "
      + result
      ;
    return r;
  }
}
and for this to work, it gets added to the server like this:
  SimpleHandler handler = new SimpleHandler( );
  m_webserver.addHandler ("simple", new AuthInvoker( handler ));
Now, although I know Java "reasonably", I don't know very much about 
servlets and Jetty etc - so I may well be missing something. Please 
shout out if so.

But otherwise, would other users find this useful? It makes it easy to 
access context information from a "plain" handler object, with a minimum 
of programmer effort.

Thanks for any comments :)
Ellers