servant


layout: pattern
title: Servant
folder: servant
permalink: /patterns/servant/
categories: Behavioral
tags:

– Decoupling

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

alt text

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.

Credits

粤ICP备15017284号