责任链模式
C++
cpp
#include <iostream>
#include <memory>
using namespace std;
// 请求类
struct Request
{
std::string requestType; // 请求类型
int number; // 该请求类型的数量
std::string requestContent; // 请求内容
};
// 抽象经理类
class Manager
{
private:
std::string name;
std::shared_ptr<Manager> superior; // 管理者的上级
public:
Manager(const std::string &strName) : name(strName) {}
void SetSuperior(std::shared_ptr<Manager> smartSuperior) // 设置管理者的上级
{
superior = smartSuperior;
}
std::shared_ptr<Manager> GetSuperior() const
{
return superior;
}
const std::string &GetName() const
{
return name;
}
virtual void RequestApplications(const Request &request) = 0;
};
// 经理 经理所能有的权限就是可批准下属两天内的假期
class CommonManager : public Manager
{
public:
CommonManager(const std::string &strName) : Manager(strName) {}
virtual void RequestApplications(const Request &request)
{
if (request.requestType == "请假" && request.number <= 2)
{
std::cout << "" << GetName().c_str() << ":" << request.requestContent.c_str() << " 数量 " << request.number << " 被批准！" << std::endl;
}
else
{
std::shared_ptr<Manager> superior = GetSuperior();
if (superior != NULL) // 其余的申请都需转到上级
{
superior->RequestApplications(request);
}
}
}
};
// 总监类 总监所能有的权限就是可批准下属一周内的假期
class Majordomo : public Manager
{
public:
Majordomo(const std::string &strName) : Manager(strName) {}
virtual void RequestApplications(const Request &request)
{
if (request.requestType == "请假" && request.number <= 5)
{
std::cout << "" << GetName().c_str() << ":" << request.requestContent.c_str() << " 数量 " << request.number << " 被批准！" << std::endl;
}
else
{
std::shared_ptr<Manager> superior = GetSuperior();
if (superior != NULL) // 其余的申请都需转到上级
{
superior->RequestApplications(request);
}
}
}
};
// 总经理类
class GeneralManager : public Manager
{
public:
GeneralManager(const std::string &strName) : Manager(strName) {}
virtual void RequestApplications(const Request &request)
{
if (request.requestType == "请假" ||
(request.requestType == "加薪" && request.number <= 500))
{
std::cout << "" << GetName().c_str() << ":" << request.requestContent.c_str() << " 数量 " << request.number << " 被批准！" << std::endl;
}
else if (request.requestType == "加薪" && request.number > 500)
{
std::cout << "" << GetName().c_str() << ":" << request.requestContent.c_str() << " 数量 " << request.number << " 被拒绝！" << std::endl;
}
else
{
std::cout << "" << GetName().c_str() << ":" << request.requestContent.c_str() << " 数量 " << request.number << " 无法处理！" << std::endl;
}
}
};
int main()
{
std::shared_ptr<Manager> manager = std::make_shared<CommonManager>("经理");
std::shared_ptr<Manager> major = std::make_shared<Majordomo>("总监");
std::shared_ptr<Manager> generalManager = std::make_shared<GeneralManager>("总经理");
// 设置上级
manager->SetSuperior(major);
major->SetSuperior(generalManager);
std::cout << "员工申请请假结果：" << std::endl;
Request request;
request.requestType = "请假";
request.number = 1;
request.requestContent = "小菜申请请假1天";
manager->RequestApplications(request);
std::cout << std::endl
<< "员工申请加薪结果：" << std::endl;
request.requestType = "请假";
request.number = 4;
request.requestContent = "小菜申请请假4天";
manager->RequestApplications(request);
std::cout << std::endl
<< "员工申请加薪结果：" << std::endl;
request.requestType = "加薪";
request.number = 400;
request.requestContent = "小菜申请加薪400";
manager->RequestApplications(request);
std::cout << std::endl
<< "员工申请加薪结果：" << std::endl;
request.requestType = "加薪";
request.number = 1000;
request.requestContent = "小菜申请加薪1000";
manager->RequestApplications(request);
system("pause");
return 0;
}C
c
#include <stdio.h>
#include <stdlib.h>
typedef struct Request
{
int days; // 请假天数
} Request;
typedef struct Manager
{
char *name;
struct Manager *superior;
void (*handleRequest)(struct Manager *self, Request *req);
} Manager;
void commonManagerHandleRequest(Manager *self, Request *req);
void majordomoHandleRequest(Manager *self, Request *req);
void generalManagerHandleRequest(Manager *self, Request *req);
void commonManagerHandleRequest(Manager *self, Request *req)
{
if (req->days <= 2)
{
printf("%s:%s 数量 %d 被批准！\n", self->name, "小菜申请请假", req->days);
}
else if (self->superior)
{
self->superior->handleRequest(self->superior, req);
}
}
void majordomoHandleRequest(Manager *self, Request *req)
{
if (req->days <= 5)
{
printf("%s:%s 数量 %d 被批准！\n", self->name, "小菜申请请假", req->days);
}
else if (self->superior)
{
self->superior->handleRequest(self->superior, req);
}
}
void generalManagerHandleRequest(Manager *self, Request *req)
{
if (req->days <= 10)
{
printf("%s:%s 数量 %d 被批准！\n", self->name, "小菜申请请假", req->days);
}
else
{
printf("%s:%s 数量 %d 被拒绝！\n", self->name, "小菜申请请假", req->days);
}
}
Manager *createManager(char *name, void (*handleRequest)(Manager *, Request *))
{
Manager *manager = malloc(sizeof(Manager));
manager->name = name;
manager->handleRequest = handleRequest;
manager->superior = NULL;
return manager;
}
void setSuperior(Manager *manager, Manager *superior)
{
manager->superior = superior;
}
void freeManager(Manager *manager)
{
free(manager);
}
int main()
{
Manager *manager = createManager("经理", commonManagerHandleRequest);
Manager *major = createManager("总监", majordomoHandleRequest);
Manager *generalManager = createManager("总经理", generalManagerHandleRequest);
setSuperior(manager, major);
setSuperior(major, generalManager);
Request request;
printf("员工申请请假结果：\n");
request.days = 1;
manager->handleRequest(manager, &request);
printf("\n员工申请请假结果：\n");
request.days = 4;
manager->handleRequest(manager, &request);
printf("\n员工申请请假结果：\n");
request.days = 10;
manager->handleRequest(manager, &request);
freeManager(manager);
freeManager(major);
freeManager(generalManager);
return 0;
}