Remote Proxy Pattern: Distributed Objects [63]

$\bullet$ Problem: How to access a distributed object on the network as if the object was on the same computer?

$\bullet$ Solution: Remote Proxy Pattern

$\bullet$ Outline: The Proxy Pattern provides for external service by a proxy, or substitute, object. The Remote Proxy Pattern uses a Proxy with the same look-and-feel as a RealSubject located somewhere on the network. Both the Proxy and the RealSubject implement the same interface so as to have the same look-and-feel. A call to op1() on the Proxy results in a call to op1() across the network to the RealSubject.

$\bullet$ Java's Remote Method Invocation (RMI) is the Remote Proxy Pattern

$\bullet$ The Proxy is called a ``stub''

$\bullet$ The RealSubject has a ``skeleton'' that talks across the network to the stub

$\bullet$ SEE CASE STUDY