设计模式之创建类型

来源：互联网发布：java helloword 编辑：程序博客网时间：2024/06/05 02:29

创建类型包括工厂模式、抽象工厂、创建者模式、单例模式和原型模式。

工厂模式UML图：

代码实现：

Factory.h

class ProductBase;class FactoryBase{public:FactoryBase();~FactoryBase();virtual ProductBase * ConcreateProduct() = 0;};class FactoryA : public FactoryBase{public:FactoryA();~FactoryA();virtual ProductBase * ConcreateProduct() override;};class FactoryB : public FactoryBase{public:FactoryB();~FactoryB();virtual ProductBase * ConcreateProduct() override;};

Factory.cpp

FactoryBase::FactoryBase(){}FactoryBase::~FactoryBase(){}FactoryA::FactoryA(){}FactoryA::~FactoryA(){}ProductBase * FactoryA::ConcreateProduct(){ProductBase * Product = new ProductA();return Product;}FactoryB::FactoryB(){}FactoryB::~FactoryB(){}ProductBase * FactoryB::ConcreateProduct(){ProductBase * Product = new ProductB();return Product;}

Product.h

class ProductBase{public:ProductBase();~ProductBase();public:virtual void Execute() = 0;};class ProductA : public ProductBase{public:ProductA();~ProductA();public:virtual void Execute() override;};class ProductB : public ProductBase{public:ProductB();~ProductB();public:virtual void Execute() override;};

Product.cpp

ProductBase::ProductBase(){cout << "Product Base Construct" << endl;}ProductBase::~ProductBase(){}ProductA::ProductA(){cout << "Product A Construct" << endl;}ProductA::~ProductA(){}void ProductA::Execute(){cout << "Product A Execute" << endl;}ProductB::ProductB(){cout << "Product B Construct" << endl;}ProductB::~ProductB(){}void ProductB::Execute(){cout << "Product B Execute" << endl;}

对应的客户：

int main(){FactoryBase * FactoryAInstance = new FactoryA();ProductBase * ProductAInstance = FactoryAInstance->ConcreateProduct();ProductAInstance->Execute();delete ProductAInstance;delete FactoryAInstance;FactoryBase * FactoryBInstance = new FactoryB();ProductBase * ProductBInstance = FactoryBInstance->ConcreateProduct();ProductBInstance->Execute();delete ProductBInstance;delete FactoryBInstance;system("pause");    return 0;}

抽象工厂UML图：

代码实现：

创建者模式UML图：

代码实现：

创建者模式UML图：

代码实现：

单例模式UML图：

代码实现：

原型模式UML图：

代码实现：

总结说明：

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