layout, title, folder, permalink, pumlid, categories, tags
| layout | title | folder | permalink | pumlid | categories | tags | |||
|---|---|---|---|---|---|---|---|---|---|
| pattern | Chain of responsibility | chain | /patterns/chain/ | 9SR13SCm20NGLTe1OkxTXX0KKzd4Wa-pVYlrdTxJN4OTMZ4U7LZv8Wg-ssdejLTgoELGHvDhaesw6HpqvWzlXwQTlYq6D3nfSlv2qjcS5F9VgvXjrHnV | Behavioral |
|
Intent
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.
Applicability
Use Chain of Responsibility when
- more than one object may handle a request, and the handler isn't known a priori. The handler should be ascertained automatically
- you want to issue a request to one of several objects without specifying the receiver explicitly
- the set of objects that can handle a request should be specified dynamically