[코딩] 리팩토링

@NonNull

@Nullable

User user3 = User.builder()
                .name("martin")
                .email("kimziou77@NAVER.COM")
                .build();

@Entity
@EntityListeners(value = UserEntityListener.class)
@Table(name = "user", indexes = {@Index(columnList = "name")}, uniqueConstraints = {@UniqueConstraint(columnNames = {"email"})})
public class User extends BaseEntity{
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    @NonNull
    private String name;
    @NonNull
    private String email;
    @Enumerated(value = EnumType.STRING)
    private Gender gender;

    @OneToMany(fetch = FetchType.EAGER)
    @JoinColumn(name = "user_id", insertable =false, updatable = false)
    @ToString.Exclude
    private List<UserHistory> userHistories = new ArrayList<>();

    @OneToMany
    @JoinColumn(name = "user_id")
    @ToString.Exclude
    private List<Review> reviews = new ArrayList<>();
}

@MappedSuperclass
@EntityListeners(value = AuditingEntityListener.class)
public class BaseEntity implements Auditable {
    @CreatedDate
    private LocalDateTime createdAt;
    @LastModifiedDate
    private LocalDateTime updatedAt;

}