行为型模式-职责链chain of responsibility

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。将这个对象连城一条链，并沿着这条链传递该请求，知道有一个对象处理它为止。

Program.cs
using System;
using System.Collections.Generic;
using System.Text;

namespace 职责链模式
{
class Program
{
static void Main(string[] args)
{

CommonManager jinli = new CommonManager("金利");
Majordomo zongjian = new Majordomo("宗剑");
GeneralManager zhongjingli = new GeneralManager("钟精励");
jinli.SetSuperior(zongjian);
zongjian.SetSuperior(zhongjingli);

Request request = new Request();
request.RequestType = "请假";
request.RequestContent = "小菜请假";
request.Number = 1;
jinli.RequestApplications(request);

Request request2 = new Request();
request2.RequestType = "请假";
request2.RequestContent = "小菜请假";
request2.Number = 4;
jinli.RequestApplications(request2);

Request request3 = new Request();
request3.RequestType = "加薪";
request3.RequestContent = "小菜请求加薪";
request3.Number = 500;
jinli.RequestApplications(request3);

Request request4 = new Request();
request4.RequestType = "加薪";
request4.RequestContent = "小菜请求加薪";
request4.Number = 1000;
jinli.RequestApplications(request4);

Console.Read();

}
}

//管理者
abstract class Manager
{
protected string name;
//管理者的上级
protected Manager superior;

public Manager(string name)
{
this.name = name;
}

//设置管理者的上级
public void SetSuperior(Manager superior)
{
this.superior = superior;
}

//申请请求
abstract public void RequestApplications(Request request);
}

//经理
class CommonManager : Manager
{
public CommonManager(string name)
: base(name)
{ }
public override void RequestApplications(Request request)
{

if (request.RequestType == "请假" && request.Number <= 2)
{
Console.WriteLine("{0}:{1} 数量{2} 被批准", name, request.RequestContent, request.Number);
}
else
{
if (superior != null)
superior.RequestApplications(request);
}

}
}

//总监
class Majordomo : Manager
{
public Majordomo(string name)
: base(name)
{ }
public override void RequestApplications(Request request)
{

if (request.RequestType == "请假" && request.Number <= 5)
{
Console.WriteLine("{0}:{1} 数量{2} 被批准", name, request.RequestContent, request.Number);
}
else
{
if (superior != null)
superior.RequestApplications(request);
}

}
}

//总经理
class GeneralManager : Manager
{
public GeneralManager(string name)
: base(name)
{ }
public override void RequestApplications(Request request)
{

if (request.RequestType == "请假")
{
Console.WriteLine("{0}:{1} 数量{2} 被批准", name, request.RequestContent, request.Number);
}
else if (request.RequestType == "加薪" && request.Number <= 500)
{
Console.WriteLine("{0}:{1} 数量{2} 被批准", name, request.RequestContent, request.Number);
}
else if (request.RequestType == "加薪" && request.Number > 500)
{
Console.WriteLine("{0}:{1} 数量{2} 再说吧", name, request.RequestContent, request.Number);
}
}
}

//申请
class Request
{
//申请类别
private string requestType;
public string RequestType
{
get { return requestType; }
set { requestType = value; }
}

//申请内容
private string requestContent;
public string RequestContent
{
get { return requestContent; }
set { requestContent = value; }
}

//数量
private int number;
public int Number
{
get { return number; }
set { number = value; }
}
}

}