保存实体后，Hibernate对于以@Formula注释的实体属性返回null

Question

我有一个简单的类，如下所示：@Entity@Table(name = "post")public class Post {    @Id    @GeneratedValue    Long id;    @Column(name = "title")    String title;    @Formula("(select current_date())")    Date currentDate;    @OneToMany(mappedBy = "post")    Set<PostComment> commentList = new HashSet<>();}并希望在服务中更新此实体：@Service@Transactionalpublic class PostService {    private final PostRepository postRepository;    public PostService(PostRepository postRepository) {        this.postRepository = postRepository;    }    @Transactional    public Post save(Post entity) {        Post post = postRepository.saveAndFlush(entity);        System.out.println("current_date: " + post.getCurrentDate());        post.getCommentList().forEach(pc -> System.out.println(pc.getReview()));        return post;    }}当我检查休眠日志时，它首先select是Post实体的所有字段，但是当我调用post.getCurrentDate()（用注释@Formula）时返回null：Hibernate: select post0_.id as id1_0_0_, post0_.title as title2_0_0_, (select current_date()) as formula0_0_ from post post0_ where post0_.id=?Hibernate: update post set title=? where id=?current_date: nullHibernate: select commentlis0_.post_id as post_id3_1_0_, commentlis0_.id as id1_1_0_, commentlis0_.id as id1_1_1_, commentlis0_.post_id as post_id3_1_1_, commentlis0_.review as review2_1_1_ from post_comments commentlis0_ where commentlis0_.post_id=?review为什么返回并记录commentList但不返回currentDate？是冬虫吗？