Facade Design

为一个子系统提供统一的接口；

1.Subsystem的类

class SubSystemOne

  {

    public void MethodOne()

    {

      Console.WriteLine(" SubSystemOne Method");

    }

  }

class SubSystemTwo

  {

    public void MethodTwo()

    {

      Console.WriteLine(" SubSystemTwo Method");

    }

  }

 

2.Facade的类

把Client的Request传递给相应的Subsystem的接口

public class Facade

{

  private SubsystemOne one = new SubsystemOne();

  private SubsystemTwo two = new SubsystemTwo(); 

public void MethodA()

{

  one.MethodOne();

  two.MethodTwo();

}

 

public void MethodB()

{

  one.MethodOne();

}

 

}

 

3.Client

Facade facade = new Facade();

facade.MethodA();

facade.MethodB();