연관 관계 설정 -1

ERD 확인

Book 클래스 수정

package com.example.bookmanager.domain;

import com.example.bookmanager.domain.listener.Auditable;
import com.example.bookmanager.domain.listener.MyEntityListener;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;
import lombok.ToString;

import javax.persistence.*;
import java.time.LocalDateTime;

@Entity
@NoArgsConstructor
@Data
// 상속받은 BaseEntity를 사용하기 위해서 ToString, EqualsAndHashCode 재정의
@ToString(callSuper = true)
@EqualsAndHashCode(callSuper = true)
// 해당 객체에 사용자가 정의한 Entity Listener가 수행되도록 선언해준다.
public class Book extends BaseEntity {
    @Id
    @GeneratedValue
    private Long id;

    private String name;

    private String category;

    private Long authorId;

    private Long publisherId;

}

BookReviewInfo 클래스 작성

package com.example.bookmanager.domain;

import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;
import lombok.ToString;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

@Entity
@NoArgsConstructor
@Data
// 상속받은 BaseEntity를 사용하기 위해서 ToString, EqualsAndHashCode 재정의
@ToString(callSuper = true)
@EqualsAndHashCode(callSuper = true)
public class BookReviewInfo extends BaseEntity{

    @Id
    @GeneratedValue
    private Long id;

    private Long bookId;

    private float averageReviewScore;

    private int reviewCount;
}

 

BookReviewInfoRepository 인터페이스 작성 (Jpa 사용을 위해서)

package com.example.bookmanager.repository;

import com.example.bookmanager.domain.BookReviewInfo;
import org.springframework.data.jpa.repository.JpaRepository;

public interface BookReviewInfoRepository extends JpaRepository<BookReviewInfo, Long> {
}

 

Test 코드 작성

BookReviewInfoRepositoryTest 

package com.example.bookmanager.repository;

import com.example.bookmanager.domain.BookReviewInfo;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

import static org.junit.jupiter.api.Assertions.*;

@SpringBootTest
class BookReviewInfoRepositoryTest {

    @Autowired
    private BookReviewInfoRepository bookReviewInfoRepository;

    @Test
    void crudTest() {
        BookReviewInfo bookReviewInfo = new BookReviewInfo();
        bookReviewInfo.setBookId(1L);
        bookReviewInfo.setAverageReviewScore(4.5f);
        bookReviewInfo.setReviewCount(2);

        bookReviewInfoRepository.save(bookReviewInfo);

        System.out.println(">>> " + bookReviewInfoRepository.findAll());
    }
}

 

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