OOP 회원과 주문 관리 설

회원 가입 시스템 설계

package member;

public enum Grade {
	BASIC, VIP
}

 

package member;

public class Member {
	
	private Long id; 
	private String name; 
	private Grade grade;
	
	public Member(Long id, String name, Grade grade) {
		this.id = id;
		this.name = name;
		this.grade = grade;
	}

	public Long getId() {
		return id;
	}

	public void setId(Long id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public Grade getGrade() {
		return grade;
	}

	public void setGrade(Grade grade) {
		this.grade = grade;
	}
	
	
}

 

package member.repository;

import member.Member;

public interface MemberRepsitory {
	
	void save(Member member);
	Member findById(Long memberId);
}

 

package member.service;

import member.Member;
import member.repository.MemberRepsitory;

public class MemberServiceImpl implements MemberService {
	
	private MemberRepsitory repsitory;

	// 생성자 의존 주입 DI 
	public MemberServiceImpl(MemberRepsitory memberRepsitory) {
		this.repsitory = memberRepsitory;
	}
	
	@Override
	public void signUp(Member member) {
		repsitory.save(member);
	}

	@Override
	public Member findByIdMember(Long memberId) {
		return repsitory.findById(memberId);
	}

}

 

package member.repository;

import member.Member;

public class DBMemberRepositoryImpl implements MemberRepsitory {
		
	@Override
	public void save(Member member) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public Member findById(Long memberId) {
		// TODO Auto-generated method stub
		return null;
	}

}

 

package member.service;

import member.Member;

public interface MemberService {
	void signUp(Member member);
	Member findByIdMember(Long memberId);
}

 

package member.service;

import member.Member;
import member.repository.MemberRepsitory;

public class MemberServiceImpl implements MemberService {
	
	private MemberRepsitory repsitory;

	// 생성자 의존 주입 DI 
	public MemberServiceImpl(MemberRepsitory memberRepsitory) {
		this.repsitory = memberRepsitory;
	}
	
	@Override
	public void signUp(Member member) {
		repsitory.save(member);
	}

	@Override
	public Member findByIdMember(Long memberId) {
		return repsitory.findById(memberId);
	}

}

 

임시 테스트

package member;

import member.repository.DBMemberRepositoryImpl;
import member.repository.MemberRepsitory;
import member.repository.MemoryMemberRepositoryImpl;
import member.service.MemberService;
import member.service.MemberServiceImpl;

public class MainTest1 {

	public static void main(String[] args) {
		
		MemberRepsitory memberRepsitoryDB = new DBMemberRepositoryImpl();
		
		MemberRepsitory memberRepsitory = MemoryMemberRepositoryImpl.getInstance();
		MemberService memberService = new MemberServiceImpl(memberRepsitory);
		
		// 클라이언트 
		Member member = new Member(100L, "티모", Grade.VIP);
		
		// 신규 회원 가입 기능 요청 
		memberService.signUp(member);
		
		// 정상적으로 메모리에 들어 갔는지 확인 
		
		System.out.println(memberService.findByIdMember(100L));
		System.out.println(memberService.findByIdMember(1L));
		System.out.println(memberService.findByIdMember(2L));
		
		
		

	}

}

 

 

package order;

import member.Grade;
import member.Member;

public class FixDiscountPolicyImpl implements DiscountPolicy {
	
	private int discountFixAmount = 1500; 
	
	@Override
	public int discount(Member member, int price) {
		// VIP 회원만 할인 금액 적용 된다. 
		if(member.getGrade() == Grade.VIP) {
			return discountFixAmount;
		}
		return 0;
	}

}

 

package order;

import member.Grade;
import member.Member;

public class PercentDiscountPolicyImpl implements DiscountPolicy {
	
	private double discountPercent = 10.0; 
	
	@Override
	public int discount(Member member, int price) {
		if(member.getGrade() == Grade.VIP) {
			return (int)(price * (discountPercent / 100)); 
		}
		return 0;
	}

	
	
}

 

package order;

public class Order {
	
	private Long memberId; 
	private String itemName; 
	private int imtePrice; 
	private int dicountPrice;
	
	public Order(Long memberId, String itemName, int imtePrice, int dicountPrice) {
		this.memberId = memberId;
		this.itemName = itemName;
		this.imtePrice = imtePrice;
		this.dicountPrice = dicountPrice;
	} 
	
	// 상품 금액에 할인된 가격 금액 출력 하는 기능 
	public int calculateDiscount() {
		return imtePrice - dicountPrice;
	}

	public Long getMemberId() {
		return memberId;
	}

	public void setMemberId(Long memberId) {
		this.memberId = memberId;
	}

	public String getItemName() {
		return itemName;
	}

	public void setItemName(String itemName) {
		this.itemName = itemName;
	}

	public int getImtePrice() {
		return imtePrice;
	}

	public void setImtePrice(int imtePrice) {
		this.imtePrice = imtePrice;
	}

	public int getDicountPrice() {
		return dicountPrice;
	}

	public void setDicountPrice(int dicountPrice) {
		this.dicountPrice = dicountPrice;
	}

	@Override
	public String toString() {
		return "Order [memberId=" + memberId + ", itemName=" + itemName + ", imtePrice=" + imtePrice + ", dicountPrice="
				+ dicountPrice + "]";
	}
	
	
	
}

 

package order;

public interface OrderService {
	Order createOrder(Long memberId, String itemName, int itemPrice);
}

 

package order;

import member.Member;
import member.repository.MemberRepsitory;

public class OrderServiceImpl implements OrderService {
	
	private final MemberRepsitory memberRepsitory;
	private final DiscountPolicy discountPolicy;
	
	public OrderServiceImpl(MemberRepsitory memberRepsitory, DiscountPolicy discountPolicy) {
		this.memberRepsitory = memberRepsitory;
		this.discountPolicy = discountPolicy;
	}
	
	@Override
	public Order createOrder(Long memberId, String itemName, int itemPrice) {
		Member member = memberRepsitory.findById(memberId);
		int discountPrice = discountPolicy.discount(member, itemPrice);
		return new Order(memberId, itemName, itemPrice, discountPrice);
	}
	
}

 

테스트

package order;

import member.Grade;
import member.Member;
import member.repository.MemberRepsitory;
import member.repository.MemoryMemberRepositoryImpl;

public class OrderServiceTest {

	public static void main(String[] args) {
		
		MemberRepsitory memberRepsitory = MemoryMemberRepositoryImpl.getInstance();
		Member member = new Member(1L, "홍길동", Grade.VIP);
		
		
		// 고정 할인 정책 테스트 
		DiscountPolicy fixDiscountPolicy = new FixDiscountPolicyImpl();
		DiscountPolicy percentDiscountPolicy = new PercentDiscountPolicyImpl();
		
		OrderService orderService1 = new OrderServiceImpl(memberRepsitory, percentDiscountPolicy);
		Order order1 = orderService1.createOrder(1L, "맥북", 10000);
		System.out.println(order1);
		System.out.println(order1.calculateDiscount());
		

	}

}

 

package config;

import member.repository.MemberRepsitory;
import member.repository.MemoryMemberRepositoryImpl;
import member.service.MemberService;
import member.service.MemberServiceImpl;
import order.DiscountPolicy;
import order.FixDiscountPolicyImpl;
import order.OrderService;
import order.OrderServiceImpl;
import order.PercentDiscountPolicyImpl;

public class AppConfig {
	
	public MemberRepsitory geMemberRepsitory() {
		return MemoryMemberRepositoryImpl.getInstance();
	}
	
	
	public MemberService getMemberService() {
		return new MemberServiceImpl(geMemberRepsitory());
	}
	
	public DiscountPolicy getDiscountPolicy() {
		// 할인 정책이 --> 고정할인 
		// 변경 --->정율 할인 바꾸면 된다. 
		 return new FixDiscountPolicyImpl();  // 이 부분만 변경하면 됩니다. 
		//return new PercentDiscountPolicyImpl();
	}
	
	public OrderService getOrderService() {
		return new OrderServiceImpl(geMemberRepsitory(), getDiscountPolicy());
	}
	
}

 

package config;

import member.Grade;
import member.Member;
import member.service.MemberService;
import order.Order;
import order.OrderService;

public class MainApp {
	
	public static void main(String[] args) {
		
		AppConfig appConfig = new AppConfig();
		
		// 클라이언트 입장에서 코딩 
		
		// 회원 가입 기능이 필요 함. 
		MemberService memberService = appConfig.getMemberService();
		Member member = new Member(200L, "도시락", Grade.VIP);
		memberService.signUp(member); // 회원 가입 
		
		// 사용자 주문 요청 
		OrderService orderService1 = appConfig.getOrderService();
		Order order1 = orderService1.createOrder(member.getId(), "아이폰16", 3_000);
		System.out.println(order1);
		System.out.println(order1.getDicountPrice());
		
		
		
		
	}
}