学了C++基本的语法都知道继承可以让子类拥有更多的功能,除了继承还有组合,委托,也能让一个类的功能增加。设计模式,这个设计是设计继承,组合,委托,之间相互叠加的方式,让其符合业务需求。
责任链模式是继承 + 委托的运用。在以下代码中,定义一个抽象管理者类,派生经理类,总监类,总经理类。有些决定经理可以做,如果经理不能做,那么调用其委托的总监来做,若总监也不能做,则调用其委托的总经理来做。
这些代码都是在学习这些的过程中码的。。。。。
上代码,亲测有效!
#include <iostream>
#include <string>
using namespace std;
//抽象管理者
class AbstractManage
{
public:
virtual void DealWithRequest(string workName, int money) = 0;
string m_ManageName;
AbstractManage* m_Manage;
};
//经理
class CommonManage : public AbstractManage
{
public:
CommonManage(string manageName, AbstractManage* manage)
{
m_ManageName = manageName;
m_Manage = manage;
}
void DealWithRequest(string workName, int money)
{
if (money < 2000)
{
cout << "经理" << this->m_ManageName << "同意" << workName << "加薪" << money << "元" << endl;
return;
}
cout << "经理无法审批,交由总监" << endl;
m_Manage->DealWithRequest(workName, money);
}
};
//总监
class MajorManage : public AbstractManage
{
public:
MajorManage(string manageName, AbstractManage* manage)
{
m_ManageName = manageName;
m_Manage = manage;
}
void DealWithRequest(string workName, int money)
{
if (money < 5000)
{
cout << "总监" << this->m_ManageName << "同意" << workName << "加薪" << money << "元" << endl;
return;
}
cout << "总监无法审批,交由总经理" << endl;
m_Manage->DealWithRequest(workName, money);
}
};
//总经理
class GeneralManage : public AbstractManage
{
public:
GeneralManage(string manageName)
{
m_ManageName = manageName;
}
void DealWithRequest(string workName, int money)
{
cout << "总经理" << this->m_ManageName << "同意" << workName << "加薪" << money << "元" << endl;
return;
}
};
int main(void)
{
GeneralManage* generalManage = new GeneralManage("裘千丈");
MajorManage* majorManage = new MajorManage("裘千仞", generalManage);
CommonManage* commonManage = new CommonManage("裘千尺", majorManage);
//处理请求
commonManage->DealWithRequest("杨过", 50000);
system("pause");
return 0;
}