15# ChainOfResponsibility 패턴 Behavioral Patterns

 

static void Main(string[] args) {     //BuilderExample();     //FactoryExample();     //FactoryMethodExample();     //FactoryMethodExample2();     //ProtoTypeExample();     //SingletonExample();     //AdapterExample();     //BridgeExample();     //CompositeExample();     //DecoratorExample();     //FacadeExample();     //FlyweightExample();     //ProxyExample();       ChainOfResponsibilityExample();       //Console.WriteLine("Hello World!");     Console.ReadKey(); }   static void ChainOfResponsibilityExample() {     Approver larry = new Behavioral_Patterns.ChainOfResponsibility.Director();     Approver sam = new VicePresident();     Approver tammy = new President();       larry.SetSuccessor(sam);     sam.SetSuccessor(tammy);       Purchase p = new Purchase(2034, 350.00, "Assets");     larry.ProcessRequest(p);       p = new Purchase(2035, 32590.10, "Project X");     larry.ProcessRequest(p);       p = new Purchase(2036, 122100.00, "Project Y");     larry.ProcessRequest(p); }   main.cs

 

using System;   namespace DesignPatterns.Behavioral_Patterns.ChainOfResponsibility {     public class Purchase     {         public Int32 Number         {             get { return number; }             set { number = value; }         }           public double Amount         {             get { return amount; }             set { amount = value; }         }           public string Purpose         {             get { return purpose; }             set { purpose = value; }         }           private Int32 number;         private double amount;         private string purpose;           public Purchase(int number, double amount, string purpose)         {             this.number = number;             this.amount = amount;             this.purpose = purpose;         }     } }   Purchase.cs

 

using System; using System.Collections.Generic; using System.Text;   namespace DesignPatterns.Behavioral_Patterns.ChainOfResponsibility {     public abstract class Approver     {         protected Approver successor;           public void SetSuccessor(Approver successor)         {             this.successor = successor;         }           public abstract void ProcessRequest(Purchase purchase);     } }   Approver.cs

 

using System;   namespace DesignPatterns.Behavioral_Patterns.ChainOfResponsibility {     public class Director : Approver     {         public override void ProcessRequest(Purchase purchase)         {             if(10000.0 > purchase.Amount)             {                 Console.WriteLine("{0} approved request# {1}", this.GetType().Name, purchase.Number);             }             else if(successor != null)             {                 successor.ProcessRequest(purchase);             }         }     } }   Director.cs

 

using System;   namespace DesignPatterns.Behavioral_Patterns.ChainOfResponsibility {     public class President : Approver     {         public override void ProcessRequest(Purchase purchase)         {             if(100000.0 > purchase.Amount)             {                 Console.WriteLine("{0} approved request# {1}", this.GetType().Name, purchase.Number);             }             else             {                 Console.WriteLine("Request# {0} requires an executive meeting!", purchase.Number);             }         }     } }   President.cs

 

using System;   namespace DesignPatterns.Behavioral_Patterns.ChainOfResponsibility {     public class VicePresident : Approver     {         public override void ProcessRequest(Purchase purchase)         {             if(25000.0 > purchase.Amount)             {                 Console.WriteLine("{0} approved request# {1}", this.GetType().Name, purchase.Number);             }             else if(successor != null)             {                 successor.ProcessRequest(purchase);             }         }     } }   VicePresident.cs

 

참고 사이트

https://www.dofactory.com/net/chain-of-responsibility-design-pattern