C++设计模式 -> 创建型 -> 抽象工厂（Abstract Factory）

抽象工厂模式（Abstract Factory）

——————— 抽象工厂 | 具体工厂 ————————–

——————— 抽象产品 | 具体产品 ————————–

逻辑

头文件

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Base_Factory.h

#ifndef FACTORY_H#define FACTORY_H#include "Base_Product.h"/* 抽象工厂 */class Base_Factory{public:    enum FACTORY_TYPE    {        BENZ_FACTORY,  /* 奔驰工厂 */        BMW_FACTORY,   /* 宝马工厂 */    };    /* 实例化具体工厂 */    static bool Base_Factory::Create_Factory(Base_Factory*& base_factory_index,                                             FACTORY_TYPE   factory);    /* 生产汽车 */    virtual Base_Car* Create_Car() = 0;    /* 生产自行车 */    virtual Base_Bike* Create_Bike() = 0;protected:private:};#endif // FACTORY_H

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Concrete_Factory.h

#ifndef CONCRETE_FACTORY_H#define CONCRETE_FACTORY_H#include "Base_Factory.h"#include "concrete_product.h"/* 奔驰工厂 */class Benz_Factory : public Base_Factory{public:    Base_Car* Create_Car(){        return new Benz_Car;    }    Base_Bike* Create_Bike(){        return new Benz_Bike;    }protected:private:};/* 宝马工厂 */class Bmw_Factory : public Base_Factory{public:    Base_Car* Create_Car(){        return new Bmw_Car;    }    Base_Bike* Create_Bike(){        return new Bmw_Bike;    }protected:private:};#endif // CONCRETE_FACTORY_H

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Base_Product.h

#ifndef Produce_H#define Produce_H#include <string>using namespace std;// 抽象汽车类class Base_Car{public:    virtual string Produce_Car() = 0;  // 生产汽车protected:private:};// 抽象自行车类class Base_Bike{public:    virtual string Produce_Bike() = 0;  // 生产自行车protected:private:};#endif // Produce_H

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Concrete_Product.h

#ifndef CONCRETE_Produce_H#define CONCRETE_Produce_H#include "Base_Product.h"/********** 汽车 **********/// 奔驰class Benz_Car : public Base_Car{public:    string Produce_Car(){        return "  Benz Car   ";    }protected:private:};// 宝马class Bmw_Car : public Base_Car{public:    string Produce_Car(){        return "   Bmw Car  ";    }protected:private:};/********** 自行车 **********/// 奔驰class Benz_Bike : public Base_Bike{public:    string Produce_Bike(){        return "  Benz Bike  ";    }protected:private:};// 宝马class Bmw_Bike : public Base_Bike{public:    string Produce_Bike(){        return "  Bmw Bike  ";    }protected:private:};#endif // CONCRETE_Produce_H

源文件

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create_factory.cpp

#include "Base_Factory.h"#include "concrete_factory.h"/* 实例具体工厂 */bool Base_Factory::Create_Factory(Base_Factory*& base_factory_index, FACTORY_TYPE factory){    switch (factory)    {        // 奔驰工厂    case FACTORY_TYPE::BENZ_FACTORY:        base_factory_index = new Benz_Factory;        break;        // 宝马工厂    case FACTORY_TYPE::BMW_FACTORY:        base_factory_index = new Bmw_Factory;        break;    default:        return false;    }    return true;}

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main.cpp

#include "Base_Factory.h"#include "Base_Product.h"#include <iostream>using namespace std;#ifndef SAFE_DELETE#define SAFE_DELETE(index) { if(index){delete(index); (index)=NULL;} }#endifint main(){    Base_Factory* base_factory_index = NULL;    Base_Car* car_index = NULL;    Base_Bike* bike_index = NULL;    // 奔驰    Base_Factory::Create_Factory(base_factory_index, Base_Factory::FACTORY_TYPE::BENZ_FACTORY);    car_index = base_factory_index->Create_Car();    bike_index = base_factory_index->Create_Bike();    cout << car_index->Produce_Car() << endl;    cout << bike_index->Produce_Bike() << endl;    SAFE_DELETE(car_index);    SAFE_DELETE(bike_index);    SAFE_DELETE(base_factory_index);    // 宝马    Base_Factory::Create_Factory(base_factory_index, Base_Factory::FACTORY_TYPE::BMW_FACTORY);    car_index = base_factory_index->Create_Car();    bike_index = base_factory_index->Create_Bike();    cout << car_index->Produce_Car() << endl;    cout << bike_index->Produce_Bike() << endl;    SAFE_DELETE(car_index);    SAFE_DELETE(bike_index);    SAFE_DELETE(base_factory_index);    getchar();    return 0;}

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出处参考：http://blog.csdn.net/liang19890820/article/details/66974516

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