/************************************************************************//*设计模式抽象工厂模式抽象工厂模式和工厂方法模式非常相似相同点：一个具体的工厂类对应一个具体的产品类，每个产品类中只有一种具体的产品不同点：一个具体的工厂类对应若干个具体的产品类，每个产品类分别有若干种归属，比如本文的进口汽车零件的例子，两种零件【车轮】和【发动机】，而【轮子】和【发动机】这两个产品类又有不同的归属，即【轮子】：【奔驰轮子】、【宝马轮子】【发动机】：【奔驰发动机】、【宝马发动机】  比如【大话】中提到的：User表和Department表为不同的产品大类， 在逻辑上，大类产品的分类之间是对等的，如前文提到的表【User】和【Department】，而【User】和【Department】表 又可以在不同的数据库【SQLServer】和【Oracle】中。 /************************************************************************/

//【车轮类】class IWheel{public:    IWheel();    virtual ~IWheel();    virtual void Import() = 0; };IWheel::IWheel(){}IWheel::~IWheel(){} //【奔驰车轮类】class CBenzWheel : public IWheel{public:    CBenzWheel();    virtual ~CBenzWheel();    virtual void Import();};CBenzWheel::CBenzWheel(){}CBenzWheel::~CBenzWheel(){}void CBenzWheel::Import(){cout<<"引进 奔驰品牌 车轮"<<endl;}//【宝马车轮类】class CBMWWheel : public IWheel{public:    CBMWWheel();    virtual ~CBMWWheel();    virtual void Import();};CBMWWheel::CBMWWheel(){}CBMWWheel::~CBMWWheel(){}void CBMWWheel::Import(){cout<<"引进 宝马品牌 车轮"<<endl;}

//【发动机类】class IEngine{public:    IEngine();    virtual ~IEngine();    virtual void Import() = 0; };IEngine::IEngine(){}IEngine::~IEngine(){}//【奔驰发动机类】class CBenzEngine : public IEngine{public:    CBenzEngine();    virtual ~CBenzEngine();    virtual void Import(); };CBenzEngine::CBenzEngine(){}CBenzEngine::~CBenzEngine(){}void CBenzEngine::Import(){cout<<"引进 奔驰品牌 发动机"<<endl;}//【宝马发动机类】class CBMWEngine : public IEngine{public:    CBMWEngine();    virtual ~CBMWEngine();    virtual void Import();};CBMWEngine::CBMWEngine(){}CBMWEngine::~CBMWEngine(){}void CBMWEngine::Import(){cout<<"引进 宝马品牌 发动机"<<endl;}

//【抽象工厂类】class IFactory{public:    IFactory();    virtual ~IFactory();    virtual IWheel*  CreateWheel()  = 0;    virtual IEngine* CreateEngine() = 0;   protected:    IWheel*  m_ptrWheel;     IEngine* m_ptrEngine;};IFactory::IFactory() : m_ptrEngine(NULL), m_ptrWheel(NULL){}IFactory::~IFactory(){     if(NULL != m_ptrWheel) {delete m_ptrWheel; m_ptrWheel = NULL;}    if(NULL != m_ptrEngine){delete m_ptrEngine; m_ptrEngine = NULL;}}//【奔驰工厂类】class CBenzFactory : public IFactory{public:    CBenzFactory();    virtual ~CBenzFactory();    virtual IWheel*  CreateWheel();    virtual IEngine* CreateEngine(); };CBenzFactory::CBenzFactory() : IFactory(){}CBenzFactory::~CBenzFactory(){}IWheel*  CBenzFactory::CreateWheel()  {return (m_ptrWheel = new CBenzWheel());}IEngine* CBenzFactory::CreateEngine() {return (m_ptrEngine = new CBenzEngine());}//【宝马工厂类】class CBMWFactory : public IFactory{public:    CBMWFactory();    virtual ~CBMWFactory();    virtual IWheel*  CreateWheel();    virtual IEngine* CreateEngine();};CBMWFactory::CBMWFactory() : IFactory(){}CBMWFactory::~CBMWFactory(){}IWheel*  CBMWFactory::CreateWheel()  { return (m_ptrWheel = new CBMWWheel());}IEngine* CBMWFactory::CreateEngine() {return (m_ptrEngine = new CBMWEngine());}

int _tmain(int argc, _TCHAR* argv[]){    IFactory *pFactory = new CBenzFactory();    IWheel* pWheel = pFactory->CreateWheel();    pWheel->Import();     cout<<endl;    IEngine* pEngine = pFactory->CreateEngine();    pEngine->Import();    cout<<endl;    cout<<endl<<endl;    delete pFactory;     pFactory = new CBMWFactory();    pWheel = pFactory->CreateWheel();    pWheel->Import();    cout<<endl;    pEngine = pFactory->CreateEngine();    pEngine->Import();    cout<<endl<<endl;    delete pFactory;        return 0;}