[Spring Data JPA] - JPA Auditing

JPA Auditing

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각 데이터마다 누가, 언제 생성했고 변경했는지 알기 위한 방법

대표적으로 사용되는 필드

• 생성 주체

• 생성 일자

• 변경 주체

• 변경 일자

기능 사용해보기

JPA Auditing 기능 활성화

main 메서드가 있는 클래스에서 @EnableJpaAuditing Annotation을 추가한다.

package com.springboot.advanced_jpa;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.data.jpa.repository.config.EnableJpaAuditing;

@SpringBootApplication
@EnableJpaAuditing
public class AdvancedJpaApplication {

	public static void main(String[] args) {
		SpringApplication.run(AdvancedJpaApplication.class, args);
	}

}

BaseEntity 생성

package com.springboot.advanced_jpa.data.entity;

import lombok.Getter;
import lombok.Setter;
import lombok.ToString;
import org.springframework.data.annotation.CreatedDate;
import org.springframework.data.annotation.LastModifiedDate;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;

import javax.persistence.Column;
import javax.persistence.EntityListeners;
import javax.persistence.MappedSuperclass;
import java.time.LocalDateTime;

@Getter
@Setter
@ToString
@MappedSuperclass
@EntityListeners(AuditingEntityListener.class)
public class BaseEntity {

    @CreatedDate
    @Column(updatable = false)
    private LocalDateTime createdAt;

    @LastModifiedDate
    private  LocalDateTime updatedAt;

}

Product Entity 객체를 수정한다.

BaseEntity 클래스를 상속받는다.

createdAt, updatedAt 필드를 제거한다.

package com.springboot.advanced_jpa.data.entity;

import lombok.*;

import javax.persistence.*;

@Entity
@Builder
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@EqualsAndHashCode(callSuper = true)
@ToString(exclude = "name")
@Table(name="product")
public class Product extends BaseEntity{

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long number;

    @Column(nullable = false)
    private String name;

    @Column(nullable = false)
    private Integer price;

    @Column(nullable=false)
    private Integer stock;
}

테스트해보기

테스트코드는 다음과 같이 작성한다

package com.springboot.advanced_jpa.data.repository;

import com.springboot.advanced_jpa.data.entity.Product;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
public class ProductRepositoryTest {
    @Autowired
    ProductRepository productRepository;

    @Test
    public void auditingTest(){
        Product product = new Product();
        product.setName("펜");
        product.setPrice(1000);
        product.setStock(100);

        Product savedProduct = productRepository.save(product);

        System.out.println("productName : "+savedProduct.getName());
        System.out.println("createdAt : "+savedProduct.getCreatedAt());

    }
}

createdAt 이 자동으로 생성된 것을 알 수 있다.

Hibernate: 
    insert 
    into
        product
        (created_at, updated_at, name, price, stock) 
    values
        (?, ?, ?, ?, ?)
productName : 펜
createdAt : 2023-03-30T18:13:49.256258500

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