[스프링부트] 3. 디스패처

package ex01;

import java.util.Scanner;

interface Controller {
    void login();

    void join();

    void logout();
}

// 1. A회사
class Dispatcher {

    Controller controller;

    public Dispatcher(Controller controller) {
        this.controller = controller;
    }

    public void routing(String path) {
        if (path.equals("/login")) {
            controller.login();
        } else if (path.equals("/join")) {
            controller.join();
        } else if (path.equals("/logout")) {
            controller.logout();
        }
    }
}

// 2. B회사 (구매할게 - Controller 구현해서 만들어)
// 새로운 기능을 추가하고 싶으면 A회사에 전화해서 만들어달라고 요청해야 함 (불편)
class UserController implements Controller {
    @Override
    public void login() {
        System.out.println("Login call");
    }

    @Override
    public void join() {
        System.out.println("Join call");
    }

    @Override
    public void logout() {
        System.out.println("Logout call");
    }
}

public class App {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String path = sc.nextLine();

        UserController uc = new UserController();
        Dispatcher ds = new Dispatcher(uc);
        ds.routing(path);

    }
}