This is the Second Arcticle: ADAPTER PATTERN

While referring to Adapter pattern , there must be a class that play the role of a adapter which can make two or more umcompatible class compatible . To explain this world , the UML diagram can make it clear easily :


        diagram 2-1 Class Adapter UML (referred from http://terrylee.cnblogs.com)


        diagram 2-2  Object Adapter UML (referred from http://terrylee.cnblogs.com)


E.G Explain them sparetely:
if a Customer request a  CUP WITH A CAP , but the orgin system can only supply a CUP , So you it's not compatible between the Request and the Orgin System , so you must find anthor factory who supply the cap ,and make it together to statisfy the customer ,  implement it in Class Adapter Pattern , Codes goes below.
Class Adapter Pattern:

 1/**//********************************************************************
 2    created:    2007/04/21
 3    created:    21:4:2007   18:47
 4    filename:     c:\Visual Studio 2005\Projects\Frist2005\Frist2005\Frist2005.cpp
 5    file path:    c:\Visual Studio 2005\Projects\Frist2005\Frist2005
 6    file base:    Frist2005
 7    file ext:    cpp
 8    author:        Chang Xinglong(King.C)
 9    
10    purpose:    Adapter Pattern -Class
11*********************************************************************/
12
13#include "stdafx.h"
14#include <map>
15#include <iostream>
16
17using namespace std;
18
19class OrginSystem
20{
21
22public:
23    void Supply()
24    {
25        cout<<"Orgin:SupplyACup"<<endl;
26    }
27};
28class CapSystem
29{
30public:
31    void Supply()
32    {
33        cout<<"CapSystem:SupplyACap"<<endl;
34    }
35};
36class Adapter: public OrginSystem , CapSystem
37{
38public:
39    void Supply()
40    {
41        OrginSystem::Supply();
42        CapSystem::Supply();
43        cout<<"So the request has been satisfied!"<<endl;
44    }
45};
46int _tmain(int argc, _TCHAR* argv[])
47{
48    Adapter _adpter;
49    _adpter.Supply();
50    system("pause");
51    return 0;
52}

 1/**//********************************************************************
 2    created:    2007/04/21
 3    created:    21:4:2007   18:47
 4    filename:     c:\Visual Studio 2005\Projects\Frist2005\Frist2005\Frist2005.cpp
 5    file path:    c:\Visual Studio 2005\Projects\Frist2005\Frist2005
 6    file base:    Frist2005
 7    file ext:    cpp
 8    author:        Chang Xinglong(King.C)
 9    
10    purpose:    Adapter Pattern-Object 
11*********************************************************************/
12
13#include "stdafx.h"
14#include <map>
15#include <iostream>
16
17using namespace std;
18
19class OrginSystem
20{
21
22public:
23    void Supply()
24    {
25        cout<<"Orgin:SupplyACup"<<endl;
26    }
27};
28class CapSystem
29{
30public:
31    void Supply()
32    {
33        cout<<"CapSystem:SupplyACap"<<endl;
34    }
35};
36class Adapter: public OrginSystem , CapSystem
37{
38public:
39    Adapter():_os(new OrginSystem),_cs(new CapSystem)
40    {
41
42    }
43    void Supply()
44    {
45        _os->Supply();
46        _cs->Supply();
47        cout<<"So the request has been satisfied!"<<endl;
48    }
49private:
50    OrginSystem *_os;
51    CapSystem * _cs;
52};
53int _tmain(int argc, _TCHAR* argv[])
54{
55    OrginSystem _orign=new _adpter();
56    _orign.Supply();
57    system("pause");
58    return 0;
59}
60
61