Button, Button, Who's Got the Button?

By: R.C. Martin

Pattern: Approaches for Separating Clients from Servers

Two approaches for separating clients from servers in a simple application based on a table lamp.

Category: Client-Server

Summary: Two approaches for separating clients from servers in a simple application based on a table lamp.

Pattern: Intelligent Children

Manage dependencies between clients and servers by defining an abstract class whose implementers interact with specific servers.

• Abstract Server and Adapted Server present alternatives to breaking client-server dependencies.

Pattern: Abstract Server

Break dependencies between clients and servers by defining an abstract class referenced by the client with the server implementing the abstract class.

• The introduction of the abstract class is an implementation of Strategy [Gamma+95]
• Adapted Server and Intelligent Children present alternative solutions to this problem.

Pattern: Adapted Server

Break dependencies between clients and servers by defining an abstract server class referenced by the client. A server is derived from the abstract server class that contains the actual server.

• The abstract server class is an implementation of Adapter [Gamma+95]
• Abstract Server and Intelligent Children provide alternative solutions to this problem.