设计模式之抽象工厂模式(AbstructFactory)

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抽象工厂模式(AbstructFactory)

优点：

1.可以支持不同类型的产品，使得产品的灵活性更强

2.可以很方便的一族中间的不同类型的产品

缺点：

结构过于臃肿，如果产品类型过大，就会难以管理

代码实现：

AbstructFactory.h

#ifndef ABSTRUCTFACTORY_H
#define ABSTRUCTFACTORY_H

/*ProductA*/
class AbstructProductBaseA
{
public:
    AbstructProductBaseA(){}
    ~AbstructProductBaseA(){}
    virtual void show();
};

class ProductA : public AbstructProductBaseA
{
public:
    ProductA(){}
    ~ProductA(){}
    void show();
};

class ProductB : public AbstructProductBaseA
{
public:
    ProductB(){}
    ~ProductB(){}
    void show();
};


/*ProductAA*/
class AbstructProductBaseAA
{
public:
    AbstructProductBaseAA(){}
    ~AbstructProductBaseAA(){}
    virtual void show();
};

class ProductAA : public AbstructProductBaseAA
{
public:
    ProductAA(){}
    ~ProductAA(){}
    void show();
};

class ProductBB : public AbstructProductBaseAA
{
public:
    ProductBB(){}
    ~ProductBB(){}
    void show();
};


/*Factory*/
class AbstructFactory
{
public:
    AbstructFactory(){}
    ~AbstructFactory(){}
    virtual AbstructProductBaseA *createProductA() = 0;
    virtual AbstructProductBaseAA *createProductAA() = 0;
};

class FactoryA : public AbstructFactory
{
public:
    FactoryA(){}
    ~FactoryA(){}
    AbstructProductBaseA *createProductA();
    AbstructProductBaseAA *createProductAA();
};

class FactoryB : public AbstructFactory
{
public:
    FactoryB(){}
    ~FactoryB(){}
    AbstructProductBaseA *createProductA();
    AbstructProductBaseAA *createProductAA();
};

#endif // ABSTRUCTFACTORY_H

AbstructFactory.cpp

#include "abstructfactory.h"

#include <iostream>

void AbstructProductBaseA::show()
{
    std::cout << "this is AbstructProductBaseA" << std::endl;
}

void ProductA::show()
{
    std::cout << "this is ProductA" << std::endl;
}

void ProductB::show()
{
    std::cout << "this is ProductB" << std::endl;
}


void AbstructProductBaseAA::show()
{
    std::cout << "this is AbstructProductBaseAA" << std::endl;
}

void ProductAA::show()
{
    std::cout << "this is ProductAA" << std::endl;
}

void ProductBB::show()
{
    std::cout << "this is ProductBB" << std::endl;
}


AbstructProductBaseA *FactoryA::createProductA()
{
    return new ProductA;
}

AbstructProductBaseAA *FactoryA::createProductAA()
{
    return new ProductAA;
}


AbstructProductBaseA *FactoryB::createProductA()
{
    return new ProductB;
}

AbstructProductBaseAA *FactoryB::createProductAA()
{
    return new ProductBB;
}

main.cpp

#include <iostream>

#include "abstructfactory.h"

int main()
{
    AbstructFactory *factory = new FactoryA;
    factory->createProductA()->show();
    factory->createProductAA()->show();

    factory = new FactoryB;
    factory->createProductA()->show();
    factory->createProductAA()->show();

    return 0;
}

设计模式之抽象工厂模式(AbstructFactory)

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原文地址：http://blog.csdn.net/fu1201520/article/details/51330403