JPAJarThymeleaf-2 (양방향 연관관계 매핑)

1. RelationMappingTest

package com.rubypaper.test;

import java.util.Date;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import com.rubypaper.board.Board;
import com.rubypaper.board.DynamicBoardRepository;
import com.rubypaper.board.DynamicMemberRepository;
import com.rubypaper.board.Member;


@RunWith(SpringRunner.class)
@SpringBootTest
public class RelationMappingTest {
	@Autowired
	private DynamicBoardRepository  boardRepo;	
	
	@Autowired
	private DynamicMemberRepository  memberRepo;	

	 @Test
	 public  void  test() {
		 Member member1 = new Member();
		 member1.setId("member1");
		 member1.setName("둘리");
		 member1.setPassword("member111");
		 member1.setRole("User");
		// memberRepo.save(member1);
		 
		 Member member2 = new Member();
		 member2.setId("member2");
		 member2.setName("도우너");
		 member2.setPassword("member222");
		 member2.setRole("Admin");
		 // memberRepo.save(member2);
		 
		 Member member3 = new Member();
		 member3.setId("member3");
		 member3.setName("영심이");
		 member3.setPassword("member333");
		 member3.setRole("User");
		 
		 for ( int i=1; i <=3; i++) {
			 Board board=new  Board();
			 board.setMember(member1);
			 board.setTitle("뚤리가 저장한 게시글 " + i);
			 board.setContent("둘리가 저장한 게시글 내용" +i);
			 board.setCreateDate(new Date());
			 board.setCnt(1L);
			// boardRepo.save(board);
		 }
		 
		 for ( int i=1; i <=3; i++) {
			 Board board=new  Board();
			 board.setMember(member2);
			 board.setTitle("도우너가 저장한 게시글 " + i);
			 board.setContent("도우너가 저장한 게시글 내용" +i);
			 board.setCreateDate(new Date());
			 board.setCnt(2L);
			// boardRepo.save(board);
		 }
		 
		 memberRepo.save(member1);
		 memberRepo.save(member2);
		 memberRepo.save(member3);
		 		
	 }

}

2. Board

package com.rubypaper.board;

import java.util.Date;

import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;

import lombok.Data;
import lombok.ToString;


@Data
@ToString(exclude="member")
@Entity
@Table(name="board1020")
public class Board {

	@Id
	@GeneratedValue
	private  Long seq;  
	private  String  title;
	private  String  content;
	@Temporal(value=TemporalType.TIMESTAMP)
	private  Date  createDate;	
	private  Long  cnt;		
	
	@ManyToOne (fetch=FetchType.EAGER)
	@JoinColumn(name="MEMBER_ID", nullable=false)
	private Member  member;
	
	public  void  setMember(Member  member) {
		this.member = member;
		member.getBoardList().add(this);
	}
}

3. Member

package com.rubypaper.board;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.Table;

import lombok.Getter;
import lombok.Setter;
import lombok.ToString;


@Getter
@Setter
@ToString(exclude="boardList")
@Entity
@Table(name="Member1020")
public class Member {
	@Id
    @Column(name="MEMBER_ID")
	private  String id;
	private  String password;
	private  String name;
	private  String role;	
	
	@OneToMany(mappedBy="member", fetch=FetchType.LAZY, cascade=CascadeType.ALL)
	private  List<Board>  boardList = new ArrayList<Board>();
}

4. RelationMappingTest3

package com.rubypaper.test;


import java.util.List;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import com.rubypaper.board.Board;
import com.rubypaper.board.DynamicBoardRepository;
import com.rubypaper.board.DynamicMemberRepository;
import com.rubypaper.board.Member;


@RunWith(SpringRunner.class)
@SpringBootTest
public class RelationMappingTest3 {
	@Autowired
	private DynamicBoardRepository  boardRepo;	
	
	@Autowired
	private DynamicMemberRepository  memberRepo;	
		
		
	@Test
	public  void  testRelationMapping() {	    
		
		List<Member> memberList =(List<Member>) memberRepo.findAll();
		
	    for(Member  m :memberList) {
	    	System.out.println(m.getBoardList().toString());
	    }
	    
	     Member member=memberRepo.findById("member2").get();
		 System.out.println(member.getName());
		 List<Board> boardList=member.getBoardList();
		 for(Board b:boardList) {
	        System.out.println(b.toString());
	    } 
				
	}
}