Facade pattern

Facade pattern

 

 

Think about that we have several features such as Scanning, Parsing, and building node from program code. And each of them provides its own interface that can be used for activating their own feature. But, the client does not want to know and control each of interfaces, but just want to use aggregated interface that can be used as simple gateway interface controlling whole the other sub interfaces. In such a case, we can use 'facade' design pattern. and the meaning of the facade is denoting that a class can provide aggregated features and hide classes inside the system. Thus, a client just try to use this facade interface instead of using the interfaces provided by whole other sub classes.