Design Patterns Explained: A New Perspective on Object-Oriented Design

Field Notes: Using the Decorator Pattern

The power of the Decorator pattern requires that the instantiation of the chains of objects be completely decoupled from the Client objects that use it. This is most typically accomplished through the use of factory objects that instantiate the chains based upon some configuration information.

The Decorator Pattern: Key Features Intent Attach additional responsibilities to an object dynamically. Problem The object that you want to use does the basic functions you require. However, you may need to add some additional functionality to the object, occurring before or after the object's base functionality. Note that the Java foundation classes use the Decorator pattern extensively for I/O handling. Solution ...