adapter模式

 

 1 #include <iostream>
 2 using namespace std;
 3 
 4 class target
 5 {
 6 public:
 7     target(){}
 8     virtual ~target(){}
 9 
10     virtual void Operation(){};
11 };
12 
13 class adaptee{
14 public:
15     void special_work(){
16         cout<<"only I can do!!\n";
17     }
18 };
19 
20 
21 /*类适配器模式
22  * 优点：可以重定义adaptee的部分行为
23  * 缺点：不能匹配adaptee的所有子类*/
24 class adapter: public target,private adaptee
25 {
26 public:
27     virtual void Operation(){adaptee::special_work();}
28 };
29 
30 int main()
31 {
32     target* tmp=new adapter();
33     tmp->Operation();
34     return 0;
35 }

 

 1 #include <iostream>
 2 using namespace std;
 3 
 4 class target
 5 {
 6 public:
 7     target(){}
 8     virtual ~target(){}
 9 
10     virtual void Operation(){};
11 };
12 
13 class adaptee{
14 public:
15     void special_work(){
16         cout<<"only I can do!!\n";
17     }
18 };
19 
20 
21 /*对象适配器模式
22  * 缺点：很难重新定义adaptee的行为，只能通过生成子类
23  * 优点：一个adapter可以匹配adaptee的所有子类*/
24 class adapter: public target
25 {
26     adaptee* p_adaptee;
27 public:
28     adapter(adaptee* var){
29         p_adaptee=var;
30     }
31     virtual void Operation(){p_adaptee->special_work();}
32 };
33 
34 int main()
35 {
36     adaptee* tmp_adaptee=new adaptee();
37     target* tmp=new adapter(tmp_adaptee);
38     tmp->Operation();
39     return 0;
40 }

posted on 2012-07-19 12:40  kakamilan  阅读(233)  评论(0)    收藏  举报

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