Spring Boot - JPA의 추가기능 (Builder, Chain)

JpaConfig.java

package com.example.study.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.data.jpa.repository.config.EnableJpaAuditing;

@Configuration
@EnableJpaAuditing
public class JpaConfig {
}

 

LoginUserAuditorAware.java

package com.example.study.component;

import org.springframework.data.domain.AuditorAware;
import org.springframework.stereotype.Component;

import java.util.Optional;

@Component
public class LoginUserAuditorAware implements AuditorAware<String> {
    @Override
    public Optional<String> getCurrentAuditor() {
        return Optional.of("AdminServer");	// 자동으로 AdminServer라는 이름 전달
    }
}

 

AdminUser.java

package com.example.study.model.entity;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.experimental.Accessors;
import org.springframework.data.annotation.CreatedBy;
import org.springframework.data.annotation.CreatedDate;
import org.springframework.data.annotation.LastModifiedBy;
import org.springframework.data.annotation.LastModifiedDate;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;

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

@NoArgsConstructor
@AllArgsConstructor
@Data
@Entity
@EntityListeners(AuditingEntityListener.class)
@Builder    // 생성자 패턴 사용하기 쉽게해줌
@Accessors(chain = true)
public class AdminUser {

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

    private String account;

    private String password;

    private String status;

    private String role;

    private LocalDateTime lastLoginAt;

    private LocalDateTime passwordUpdatedAt;

    private int loginFailCount;

    private LocalDateTime registeredAt;

    private LocalDateTime unregisteredAt;

    @CreatedDate
    private LocalDateTime createdAt;

    @CreatedBy
    private String createdBy;

    @LastModifiedDate
    private LocalDateTime updatedAt;

    @LastModifiedBy
    private String updatedBy;
}

 

User.java

package com.example.study.model.entity;

import lombok.*;
import lombok.experimental.Accessors;
import org.springframework.data.annotation.CreatedBy;
import org.springframework.data.annotation.CreatedDate;
import org.springframework.data.annotation.LastModifiedBy;
import org.springframework.data.annotation.LastModifiedDate;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;

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

@Data
@AllArgsConstructor
@NoArgsConstructor
@Entity // ==table
@ToString(exclude = {"orderGroupList"})
@EntityListeners(AuditingEntityListener.class)
@Builder    // 생성자 패턴 사용하기 쉽게해줌
@Accessors(chain = true)
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    private String account;
    private String password;
    private String status;
    private String email;
    private String phoneNumber;
    private LocalDateTime registeredAt;
    private LocalDateTime unregisteredAt;
    @CreatedDate
    private LocalDateTime createdAt;

    @CreatedBy
    private String createdBy;

    @LastModifiedDate
    private LocalDateTime updatedAt;

    @LastModifiedBy
    private String updatedBy;

    // User : OrderGroup = 1 : N
    @OneToMany(fetch = FetchType.LAZY, mappedBy = "user")
    private List<OrderGroup> orderGroupList;
}

 

위의 AdminUser.java 와 User.java 의 코드처럼 @Builder 와 @Accessors(chain = true) 를 모든 Entity에 추가해주고 밑의 공통변수인 createdAt, createdBy, updatedAt, updatedBy 역시 각각에 @CreatedDate, @CreatedBy, @LastModifiedDate, @LastModifiedBy 어노테이션들도 모든 Entity에 추가해준다.

 

User u = User.builder().account(account).password(password).status(status).build(); // 빌더 패턴

User u = new User().setAccount("").setEmail("").setPassword("");    // 체인 패턴