享元模式

代码

1 using System;
2 using System.Collections;
3 using System.Collections.Generic;
4
5 public abstract class FlyWeight
6 {
7     public abstract void opetation();
8 }
9
10 public class ConcreteFlyweight:FlyWeight
11 {
12     private string str;
13     public ConcreteFlyweight(string str)
14     {
15         this.str=str;
16     }
17
18     public override void opetation()
19     {
20         Console.WriteLine("Concrete---Flyweight:"+str);
21     }
22 }
23
24 public class FlyWeightFactory
25 {
26     private Hashtable flyweights=new Hashtable();
27     public FlyWeightFactory()
28     {
29
30     }
31     public FlyWeight getFlyWeight(object obj)
32     {
33         FlyWeight flyweight=(FlyWeight)flyweights[obj];
34         if(flyweight==null)
35         {
36             flyweight=new ConcreteFlyweight(obj.ToString());
37             flyweights.Add(obj,flyweight);
38         }
39         return flyweight;
40     }
41
42     public int getFlyweightSize()
43     {
44         return flyweights.Count;
45     }
46 }
47
48 public class FlyweightPattern
49 {
50     FlyWeightFactory factory=new FlyWeightFactory();
51     FlyWeight fly1;
52     FlyWeight fly2;
53     FlyWeight fly3;
54     FlyWeight fly4;
55     FlyWeight fly5;
56     FlyWeight fly6;
57     FlyWeight fly7;
58     FlyWeight fly8;
59
60     public FlyweightPattern()
61     {
62         fly1=factory.getFlyWeight("MikeSoft");
63         fly2=factory.getFlyWeight("MikeChang");
64         fly3=factory.getFlyWeight("MikeSoft");
65         fly4=factory.getFlyWeight("MikeSoft");
66         fly5=factory.getFlyWeight("MikeSoft");
67         fly6=factory.getFlyWeight("MikeSoft");
68         fly7=factory.getFlyWeight("MikeSoft");
69         fly8=factory.getFlyWeight("MikeSoft");
70     }
71
72     public void showFlyweight()
73     {
74         fly1.opetation();
75         fly2.opetation();
76         fly3.opetation();
77         fly4.opetation();
78         fly5.opetation();
79         fly6.opetation();
80         fly7.opetation();
81         fly8.opetation();
82
83         int objSize=factory.getFlyweightSize();
84         Console.WriteLine(objSize);
85     }
86 }
87
88 public class MyClass
89 {
90     public static void Main()
91     {
92         Console.WriteLine("The FlyWeight Pattern!!");
93         FlyweightPattern fp=new FlyweightPattern();
94         fp.showFlyweight();
95         Console.ReadLine();
96     }
97 }

代码

using System;
using System.Collections;
using System.Collections.Generic;

class FlyweightFactory
{
    private Hashtable flywights=new Hashtable();
    public FlyweightFactory()
    {
        flywights.Add("X",new Contest1());
        flywights.Add("Y",new Contest1());
        flywights.Add("Z",new Contest1());
    }

    public Flyweight getFlyweight(string key)
    {
        if(!flywights.Contains(key))
        {
            flywights.Add(key,new UnsharedContest());
        }
        return ((Flyweight)flywights[key]);
    }
}

public abstract class Flyweight
{
    public abstract void Operation(int index);
}

public class Contest1:Flyweight
{
    public override void Operation(int index)
    {
        Console.WriteLine("具体Flyweight:"+index);
    }
}

public class UnsharedContest:Flyweight
{
    public override void Operation(int index)
    {
        Console.WriteLine("不共享的具体Flyweight:"+index);
    }
}

public class MyClass
{
    public static void Main()
    {
        int index=22;
        FlyweightFactory f=new FlyweightFactory();

        Flyweight myweight=f.getFlyweight("X");
        myweight.Operation(--index);

        Flyweight myweight1=f.getFlyweight("M");
        myweight1.Operation(--index);
        Console.ReadLine();
    }
}

using System;
using System.Collections;
using System.Collections.Generic;

public abstract class FlyWeight
{
   public abstract void opetation();
}

public class ConcreteFlyweight:FlyWeight
{
   private string str;
   public ConcreteFlyweight(string str)
   {
       this.str=str;
   }

   public override void opetation()
   {
       Console.WriteLine("Concrete---Flyweight:"+str);
   }
}

public class FlyWeightFactory
{
   private Hashtable flyweights=new Hashtable();
   public FlyWeightFactory()
   {

   }
   public FlyWeight getFlyWeight(object obj)
   {
       FlyWeight flyweight=(FlyWeight)flyweights[obj];
       if(flyweight==null)
       {
           flyweight=new ConcreteFlyweight(obj.ToString());
           flyweights.Add(obj,flyweight);
       }
       return flyweight;
   }

   public int getFlyweightSize()
   {
       return flyweights.Count;
   }
}

public class FlyweightPattern
{
   FlyWeightFactory factory=new FlyWeightFactory();
   FlyWeight fly1;
   FlyWeight fly2;
   FlyWeight fly3;
   FlyWeight fly4;
   FlyWeight fly5;
   FlyWeight fly6;
   FlyWeight fly7;
   FlyWeight fly8;

   public FlyweightPattern()
   {
       fly1=factory.getFlyWeight("MikeSoft");
       fly2=factory.getFlyWeight("MikeChang");
       fly3=factory.getFlyWeight("MikeSoft");
       fly4=factory.getFlyWeight("MikeSoft");
       fly5=factory.getFlyWeight("MikeSoft");
       fly6=factory.getFlyWeight("MikeSoft");
       fly7=factory.getFlyWeight("MikeSoft");
       fly8=factory.getFlyWeight("MikeSoft");
   }

   public void showFlyweight()
   {
       fly1.opetation();
       fly2.opetation();
       fly3.opetation();
       fly4.opetation();
       fly5.opetation();
       fly6.opetation();
       fly7.opetation();
       fly8.opetation();

       int objSize=factory.getFlyweightSize();
       Console.WriteLine(objSize);
   }
}

public class MyClass
{
   public static void Main()
   {
       Console.WriteLine("The FlyWeight Pattern!!");
       FlyweightPattern fp=new FlyweightPattern();
       fp.showFlyweight();
       Console.ReadLine();
   }
}