The RMI-P4 Object Broker 

Use

In RMI-P4, an object of type P4ObjectBroker is responsible for dispatching client requests to the remote object and directing the results (or the exceptions) of the remote method call back to the client. This behavior is based on the Broker architecture as defined by the CORBA specification. The P4ObjectBroker implements logic for allocating requests to the appropriate object on the server side, based on the object identifier that comes with the request.

The P4ObjectBroker is an abstract class that has implementations tailored for both cluster and non-clustered environments. A single instance of this object can exist within a JVM.