c++ 23种设计模式之抽象工厂模式

最新推荐文章于 2025-02-12 17:51:40 发布

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本文详细解析了C++中抽象工厂模式的应用，包括用户和部门的抽象接口实现，以及不同数据库（ACCESS和SQL）的具体工厂类。通过客户端实例化不同数据库的用户和部门对象，并调用其相应的方法，展示了如何灵活地使用抽象工厂模式进行对象创建。

#include <string> 
#include <iostream> 
#include <vector> 
using namespace std; 

//c++ 23种设计模式之抽象工厂模式
// 用户抽象接口 
class IUser 
{ 
public : 
	virtual void GetUser()=0; 
	virtual void InsertUser()=0; 
}; 

// 部门抽象接口 
class IDepartment 
{ 
public: 
	virtual void GetDepartment()=0; 
	virtual void InsertDepartment()=0; 
}; 

//ACCESS 用户 
class CAccessUser : public IUser 
{ 
public: 
	virtual void GetUser() 
	{ 
		cout<<"Access GetUser"<<endl; 
	} 
	virtual void InsertUser() 
	{ 
		cout<<"Access InsertUser"<<endl; 
	} 
}; 

//ACCESS 部门 
class CAccessDepartment : public IDepartment 
{ 
public: 
	virtual void GetDepartment() 
	{ 
		cout<<"Access GetDepartment"<<endl; 
	} 
	virtual void InsertDepartment() 
	{ 
		cout<<"Access InsertDepartment"<<endl; 
	} 
}; 

//SQL 用户 
class CSqlUser : public IUser 
{ 
public: 
	virtual void GetUser() 
	{ 
		cout<<"Sql User"<<endl; 
	} 
	virtual void InsertUser() 
	{ 
		cout<<"Sql User"<<endl; 
	} 
}; 

//SQL 部门类 
class CSqlDepartment: public IDepartment 
{ 
public: 
	virtual void GetDepartment() 
	{ 
		cout<<"sql getDepartment"<<endl; 
	} 
	virtual void InsertDepartment() 
	{ 
		cout<<"sql insertdepartment"<<endl; 
	} 
}; 

// 抽象工厂 
class IFactory 
{ 
public: 
	virtual IUser* CreateUser()=0; 
	virtual IDepartment* CreateDepartment()=0; 
}; 

//ACCESS 工厂 
class AccessFactory : public IFactory 
{ 
public: 
	virtual IUser* CreateUser() 
	{ 
		return new  CAccessUser(); 
	} 
	virtual IDepartment* CreateDepartment() 
	{ 
		return new CAccessDepartment(); 
	} 
}; 

//SQL 工厂 
class SqlFactory : public IFactory 
{ 
public: 
	virtual IUser* CreateUser() 
	{ 
		return new  CSqlUser(); 
	} 
	
	virtual IDepartment* CreateDepartment() 
	{ 
		return new CSqlDepartment(); 
	} 
}; 

//客户端： 
int main() 
{ 
	IFactory* factory= new SqlFactory(); 
	IUser* user=factory->CreateUser(); 
	IDepartment* depart = factory->CreateDepartment(); 
	user->GetUser(); 
	depart->GetDepartment(); 
	return 0; 
}