原型（Prototype）模式

二、 Prototype模式的結構：

 

客戶（Client）角色：客戶類提出創建對象的請求。
抽象原型（Prototype）角色：這是一個抽象角色，通常由一個C#接口或抽象類實現。此角色給出所有的具體原型類所需的接口。在C#中，抽象原型角色通常實現了ICloneable接口。
具體原型（Concrete Prototype）角色：被複制的對象。此角色需要實現抽象原型角色所要求的接口。

 

 

#ifndef PROTOTYPE_H_
#define PROTOTYPE_H_
 
class  Prototype
{
public:
 Prototype(){};
 virtual~ Prototype(){};
 virtual Prototype* Clone() = 0;
};

class ConcreatePrototype1 : public Prototype
{
public:
 ConcreatePrototype1();
 ConcreatePrototype1(const ConcreatePrototype1& aoPrototype1);
 virtual~ConcreatePrototype1();
 virtual Prototype* Clone();
};

class ConcreatePrototype2 : public Prototype
{
public:
 ConcreatePrototype2();
 ConcreatePrototype2(const ConcreatePrototype2& aoPrototype1);
 virtual~ConcreatePrototype2();
 virtual Prototype* Clone();
};

#endif

 

#include "stdafx.h"
#include "Prototype.h"
#include <iostream>

using namespace std;

ConcreatePrototype1::ConcreatePrototype1()
{
 cout<<"ConcreatePrototype1::ConcreatePrototype1()"<<endl;
}

ConcreatePrototype1::ConcreatePrototype1(const ConcreatePrototype1& aoPrototype1)
{
 cout<<"ConcreatePrototype1::ConcreatePrototype1(const ConcreatePrototype1& aoPrototype1)"<<endl;

}
Prototype* ConcreatePrototype1::Clone()
{
 cout<<"ConcreatePrototype1::Clone()"<<endl;
 return new ConcreatePrototype1(*this);
}
ConcreatePrototype1::~ConcreatePrototype1()
{
 cout<<"ConcreatePrototype1::~ConcreatePrototype1()"<<endl;
}

ConcreatePrototype2::ConcreatePrototype2()
{
 cout<<"ConcreatePrototype2::ConcreatePrototype2()"<<endl;
}

ConcreatePrototype2::ConcreatePrototype2(const ConcreatePrototype2& aoPrototype1)
{
 cout<<"ConcreatePrototype2::ConcreatePrototype2(const ConcreatePrototype2& aoPrototype1)"<<endl;

}
Prototype* ConcreatePrototype2::Clone()
{
 cout<<"ConcreatePrototype2::Clone()"<<endl;
 return new ConcreatePrototype2(*this);

}
ConcreatePrototype2::~ConcreatePrototype2()
{
 cout<<"ConcreatePrototype2::~ConcreatePrototype2()"<<endl;
}

 

#include "stdafx.h"
#include "Prototype.h"
#include <stdlib.h>

int _tmain(int argc, _TCHAR* argv[])
{
 Prototype* lpPrototype1 =  new ConcreatePrototype1;
 Prototype* lpPrototype2 =  lpPrototype1->Clone();
 

 Prototype* lpPrototype3 =  new ConcreatePrototype2;
 Prototype* lpPrototype4 =  lpPrototype3->Clone();

 delete lpPrototype1;
 delete lpPrototype2;
 delete lpPrototype3;
 delete lpPrototype4;
 system("pause");
 return 0;
}