数据库User表：
#ifndef USER_H
#define USER_H
#include <string>
using std::string;
//数据库User表
class User
{
public:
unsigned int getID()
{
return m_ID;
}
void setID(unsigned int n)
{
m_ID = n;
}
string getName()
{
return m_name;
}
void setName(string name)
{
m_name = name;
}
private:
unsigned int m_ID;
string m_name;
};
#endif // USER_H
数据库Department表：
#ifndef DEPARTMENT_H
#define DEPARTMENT_H
#include <string>
using std::string;
//数据库Department表
class Department
{
public:
unsigned int getID()
{
return m_ID;
}
void setID(unsigned int n)
{
m_ID = n;
}
string getName()
{
return m_name;
}
void setName(string name)
{
m_name = name;
}
private:
unsigned int m_ID;
string m_name;
};
#endif // DEPARTMENT_H
IFactory接口定义一个创建访问User表和Department表对象的抽象工厂接口。
抽象工厂IFactory：
#ifndef IFACTORY_H
#define IFACTORY_H
class IUser;
class IDepartment;
//抽象工厂类
class IFactory
{
public:
virtual IUser* createUser() = 0;
virtual IDepartment* createDepartment() = 0;
};
#endif // IFACTORY_H
MySQLFactory类实现IFactory接口，实现MySQLUser和MySQLDepartment。
具体工厂MySQLFactory：
#ifndef MYSQLFACTORY_H
#define MYSQLFACTORY_H
#include "IFactory.h"
#include "MySQLUser.h"
#include "MySQLDepartment.h"
//具体工厂类
class MySQLFactory : public IFactory
{
public:
virtual IUser* createUser()
{
IUser* user = new MySQLUser();
return user;
}
virtual IDepartment* createDepartment()
{
IDepartment* department= new MySQLDepartment();
return department;
}
};
#endif // MYSQLFACTORY_H
SQLServerFactory类实现IFactory接口，实现SQLServerUser和SQLServerDepartment。
具体工厂SQLServerFactory：
#ifndef SQLSERVERFACTORY_H
#define SQLSERVERFACTORY_H
#include "IFactory.h"
#include "SQLServerUser.h"
#include "SQLServerDepartment.h"
//具体工厂类
class SQLServerFactory : public IFactory
{
public:
virtual IUser* createUser()
{
IUser* user = new SQLServerUser();
return user;
}
virtual IDepartment* createDepartment()
{
IDepartment* department= new SQLServerDepartment();
return department;
}
};
#endif // SQLSERVERFACTORY_H
抽象产品IUser：
#ifndef IUSER_H
#define IUSER_H
class User;
//表User抽象产品类
class IUser
{
public:
virtual void insertUser(User* user) = 0;
virtual User* getUser(unsigned int id) = 0;
};
#endif // IUSER_H
具体产品MySQLUser：
#ifndef MYSQLUSER_H
#define MYSQLUSER_H
#include "IUser.h"
#include <iostream>
using std::cout;
using std::endl;
//User具体产品类
class MySQLUser : public IUser
{
public:
virtual void insertUser(User* user)
{
cout << "insert a record to User table on MySQL" << endl;
}
virtual User* getUser(unsigned int id)
{
cout << "get a record by ID from User table on MySQL" << endl;
return NULL;
}
};
#endif // MYSQLUSER_H
具体产品SQLServerUser：
#ifndef SQLSERVERUSER_H
#define SQLSERVERUSER_H
#include "IUser.h"
#include <iostream>
using std::cout;
using std::endl;
//User具体产品类
class SQLServerUser : public IUser
{
public:
virtual void insertUser(User* user)
{
cout << "insert a record to User table on SQLServer" << endl;
}
virtual User* getUser(unsigned int id)
{
cout << "get a record by ID from User table on SQLServer" << endl;
return NULL;
}
};
#endif // SQLSERVERUSER_H
IDepartment接口用于客户端访问，解除与具体数据库访问的耦合。
抽象产品IDepartment：
#ifndef IDEPARTMENT_H
#define IDEPARTMENT_H
class Department;
//表Department抽象产品类
class IDepartment
{
public:
virtual void insertDepartment(Department* department) = 0;
virtual Department* getDepartment(unsigned int id) = 0;
};
#endif // IDEPARTMENT_H
MySQLDepartment类用于访问MySQL的Department类。
具体产品MySQLDepartment：
#ifndef MYSQLDEPARTMENT_H
#define MYSQLDEPARTMENT_H
#include "IDepartment.h"
#include <iostream>
using std::cout;
using std::endl;
//Department具体产品类
class MySQLDepartment : public IDepartment
{
public:
virtual void insertDepartment(Department* department)
{
cout << "insert a record to Department Table on MySQL" << endl;
}
virtual Department* getDepartment(unsigned int id)
{
cout << "get a record by ID from Department table on MySQL" << endl;
return NULL;
}
};
#endif // MYSQLDEPARTMENT_H
SQLServerDepartment类用于访问SQLServer的Department类。
具体产品SQLServerDepartment：
#ifndef SQLSERVERDEPARTMENT_H
#define SQLSERVERDEPARTMENT_H
#include "IDepartment.h"
#include <iostream>
using std::cout;
using std::endl;
//Department具体产品类
class SQLServerDepartment : public IDepartment
{
public:
virtual void insertDepartment(Department* department)
{
cout << "insert a Department to SQLServer" << endl;
}
virtual Department* getDepartment(unsigned int id)
{
cout << "get a Department by ID from SQLServer" << endl;
return NULL;
}
};
#endif // SQLSERVERDEPARTMENT_H
客户调用程序：
#include <iostream>
#include "User.h"
#include "Department.h"
#include "IFactory.h"
#include "IUser.h"
#include "IDepartment.h"
#include "MySQLFactory.h"
#include "SQLServerFactory.h"
using namespace std;
int main()
{
User user;
Department department;
IFactory* factoryMySQL = new MySQLFactory();
IUser* iuMySQL = factoryMySQL->createUser();
iuMySQL->insertUser(&user);
iuMySQL->getUser(2);
IDepartment* idMySQL = factoryMySQL->createDepartment();
idMySQL->insertDepartment(&department);
idMySQL->getDepartment(1);
IFactory* factorySQLServer = new SQLServerFactory();
IUser* iuSQLServer = factorySQLServer->createUser();
iuSQLServer->insertUser(&user);
iuSQLServer->getUser(2);
IDepartment* idSQLServer = factorySQLServer->createDepartment();
idSQLServer->insertDepartment(&department);
idSQLServer->getDepartment(1);
delete factoryMySQL;
delete iuMySQL;
delete idMySQL;
delete factorySQLServer;
delete iuSQLServer;
delete idSQLServer;
return 0;
}
本文出自 “生命不息，奋斗不止” 博客，谢绝转载！
原文地址：http://9291927.blog.51cto.com/9281927/1969572
