SpringSpring Data JPA

Spring Data JPA - Convertor

목차

BooleanToYNConverter

Boolean 으로 저장 되는 값을 True, false 로 변경해 값을 저장하기 위한 Convertor

@Converter
public class BooleanToYNConverter implements AttributeConverter<Boolean, String> {
    @Override
    public String convertToDatabaseColumn(Boolean attribute){
        return (attribute != null && attribute) ? "Y" : "N";
    }

    @Override
    public Boolean convertToEntityAttribute(String dbData){
        return "Y".equals(dbData);
    }
}
@Entity
@Getter
@Builder
@NoArgsConstructor
@AllArgsConstructor
@EntityListeners(AuditingEntityListener.class)
public class Post extends BaseEntity{

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

    @Column(name = "POST_TITLE", length = 100, nullable = false)
    private String title;

    @Column(name = "POST_SUBTITLE")
    private String subTitle;

    @Lob
    private String content;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "username", nullable = false, referencedColumnName = "username")
    @CreatedBy
    private UserInfo author;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "CATEGORY", nullable = true, referencedColumnName = "CATEGORY_NAME")
    private Category category;

    @Column(name = "isDeleted")
    @ColumnDefault("false")
    @Convert(converter = BooleanToYNConverter.class)
    private boolean isDeleted;

    // ==== 연관관계 편의 메서드 ==== //
    public void changeCategory(Category category){
        this.category = category;
        // 새로운 카테고리에 해당 포스트 추가
        category.getPosts().add(this);
    }

    public void setAuthor(UserInfo author){
        this.author = author;
        author.getPosts().add(this);
    }

    public Post updatePost(Post post) {
        this.title = post.title;
        this.subTitle = post.subTitle;
        this.content = post.content;
        changeCategory(post.getCategory());
        return this;
    }
}
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