layout, title, folder, permalink, categories, language, tags
| layout | title | folder | permalink | categories | language | tags | |
|---|---|---|---|---|---|---|---|
| pattern | Servant | servant | /patterns/servant/ | Behavioral | en |
|
Intent
Servant is used for providing some behavior to a group of classes. Instead of defining that behavior in each class - or when we cannot factor out this behavior in the common parent class - it is defined once in the Servant.
Class diagram
Applicability
Use the Servant pattern when
- When we want some objects to perform a common action and don't want to define this action as a method in every class.