我读设计模式之Chain Of Responsibility Pattern

using  System;   
using  System.Collections.Generic;   
using  System.Linq;   
using  System.Text;   
  
/// 使多个对象都有机会处理请求，从而避免请求的发送者和接受者之间的耦合关系   
/// 将这个对象练成一条链，并沿着这条链条传递该请求，直到有一个对象处理它为止   
///    
///  举例：   
/// 员工发送申请单据，直接直接交给自己直接主管；   
/// 至于到底谁有权限审核，则发送者不必关心。   
///    
  
namespace  ChainOfResponsibilityPattern   
{   
     class  Program   
    {   
         static   void  Main( string [] args)   
        {   
            Manager commonManager  =   new  CommonManager( " Spike " );   
            Manager majorManager  =   new  MajorManager( " kenny " );   
            Manager generalManager  =   new  GeneralManager( " John " );   
  
            commonManager.SetSuperior(majorManager);   
            majorManager.SetSuperior(generalManager);   
  
            Request request  =   new  Request();   
            request.RequestType  =   " 请假 " ;   
            commonManager.RequestApplications(request);   
  
            request  =   new  Request();   
            request.RequestType  =   " 加薪 " ;   
            commonManager.RequestApplications(request);   
  
            request  =   new  Request();   
            request.RequestType  =   " 离职 " ;   
            commonManager.RequestApplications(request);   
  
            Console.Read();   
        }   
    }   
  
     public   abstract   class  Manager   
    {   
         public   string  name;   
  
         // 管理者上级   
         protected  Manager superior;   
  
         public  Manager( string  name)   
        {   
             this .name  =  name;   
        }   
  
         // 设置管理者上级   
         public   void  SetSuperior(Manager superior)   
        {   
             this .superior  =  superior;   
        }   
  
         // 申请请求   
         public   abstract   void  RequestApplications(Request request);   
    }   
  
     // Common Manager   
     public   class  CommonManager : Manager   
    {   
         public  CommonManager( string  name) :  base (name) { }   
  
         public   override   void  RequestApplications(Request request)   
        {   
             if  (request.RequestType  ==   " 请假 " )   
            {   
                Console.WriteLine( " 你的请假单已经被Common Manager 【 "   +  name  +   " 】批准 " );   
            }   
             else   
            {   
                 if  (superior  !=   null )   
                {   
                    superior.RequestApplications(request);   
                }   
                 else   
                {   
                    Console.WriteLine( " 没有人具有批准【 "   +  request.RequestType  +   " 】的权限 " );   
                }   
            }   
        }   
    }   
  
     // Major Manager   
     public   class  MajorManager : Manager   
    {   
         public  MajorManager( string  name) :  base (name) { }   
  
         public   override   void  RequestApplications(Request request)   
        {   
             if  (request.RequestType  ==   " 请长假 " )   
            {   
                Console.WriteLine( " 你的长期请假单已经被Major Manager 【 "   +  name  +   " 】 批准 " );   
            }   
             else   
            {   
                 if  (superior  !=   null )   
                {   
                    superior.RequestApplications(request);   
                }   
                 else   
                {   
                    Console.WriteLine( " 没有人具有批准【 "   +  request.RequestType  +   " 】的权限 " );   
                }   
            }   
        }   
    }   
  
     // General Manager   
     public   class  GeneralManager : Manager   
    {   
         public  GeneralManager( string  name) :  base (name) { }   
  
         public   override   void  RequestApplications(Request request)   
        {   
             if  (request.RequestType  ==   " 加薪 " )   
            {   
                Console.WriteLine( " 你的加薪申请已经被general Manager 【 " + name + " 】批准 " );   
            }   
             else   
            {   
                 if  (superior  !=   null )   
                {   
                    superior.RequestApplications(request);   
                }   
                 else   
                {   
                    Console.WriteLine( " 没有人具有批准【 " + request.RequestType + " 】的权限 " );   
                }   
            }   
        }   
    }   
  
     // 申请   
   public   class  Request   
    {   
         // 申请类别   
         public   string  RequestType {  set ;  get ; }   
  
         // 申请内容   
         public   string  RequestContent {  set ;  get ; }   
  
         // Number   
         public   string  Number {  set ;  get ; }   
    }   
}