adapter

Overview ¶

*

• An adapter helps two incompatible interfaces to work together. This is the real world definition
• for an adapter. Interfaces may be incompatible but the inner functionality should suit the need.
• The Adapter design pattern allows otherwise incompatible classes to work together by converting
• the interface of one class into an interface expected by the clients. *
• There are two variations of the Adapter pattern: The class adapter implements the adaptee's
• interface whereas the object adapter uses composition to contain the adaptee in the adapter
• object. This example uses the object adapter approach. *
• The Adapter FishingBoatAdapter converts the interface of the adaptee FishingBoat into a suitable
• one expected by the client RowingBoat. *
• The story of this implementation is this. Pirates are coming! we need a to flee! We have a
• FishingBoat and our captain. We have no time to make up a new ship! we need to reuse this
• FishingBoat. The captain needs a rowing boat which he can operate. The spec is in RowingBoat.
• We will use the Adapter pattern to reuse FishingBoat.