Chain of Responsibility
- The Chain of Responsibility pattern uses a chain of objects to handle a request, which is typically an event. Objects in the chain forward the request along the chain until one of the objects handles the event. Processing stops after an event is handled.
- Avoid coupling the sender of a request to its receiver by giving more than one object a chance to handle the request. Chain the receiving objects and pass the request along the chain until an object handles it.
The role of every class:
- Handler - defines an interface for handling requests
- handles the requests it is responsible for
- If it can handle the request it does so, otherwise it sends the request to its successor
- Client - sends commands to the first object in the chain that may handle the command
- External Links
--Djeyarat 15:49, 2 April 2007 (EDT)