[스프링 입문] 회원 도메인과 리포지토리 만들기

 

 

*Member Class

package hello.hello_spring.domain;

public class Member {
    private Long id;
    private String name;

    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;
    }
}

 

*MemberRepository Interface

package hello.hello_spring.repository;

import hello.hello_spring.domain.Member;

import java.util.List;
import java.util.Optional;

public interface MemberRepository {
    Member save(Member member);
    Optional<Member> findById(Long id);
    Optional<Member> findByName(String name);
    List<Member> findAll();
}

 

*MemorymemberRepository Class

package hello.hello_spring.repository;

import hello.hello_spring.domain.Member;

import java.util.*;

public class MemoryMemberRepository implements MemberRepository {
    
    private static Map<Long, Member> store = new HashMap<>();
    private static long sequence = 0L;
    
    @Override
    public Member save(Member member) {
    member.setId(++sequence);
    store.put(member.getId(), member);
    return member;
    }

    @Override
    public Optional<Member> findById(Long id) {
        return Optional.ofNullable(store.get(id));
    }

    @Override
    public Optional<Member> findByName(String name) {
       return store.values().stream()
               .filter(member -> member.getName().equals(name))
               .findAny();
    }

    @Override
    public List<Member> findAll() {
        return new ArrayList<>(store.values());
    }
}

 

 

김영한 강사님의 '스프링 입문 - 코드로 배우는 스프링 부트, 웹 MVC, DB 접근 기술'을 듣고 정리한 것입니다.