休眠標准查詢多個枚舉

Question

我有一堂課評論：

@Entity
@Table(name = Constants.COMMENTS_TABLE)
@Audited
public class Comment {


@Column(name = "comment", nullable = false)
private String comment;

@ElementCollection(targetClass = CommentTopic.class)
@Enumerated(EnumType.STRING)
@Fetch(value = FetchMode.JOIN)
@CollectionTable(name = Constants.COMMENTS_TOPIC_JOIN_TABLE, joinColumns = @JoinColumn(name = "comment_id"))
@Column(name = "topic")
private Set<CommentTopic> commentTopics;

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "comment_id", nullable = false)
private Long commentId;
}

保留注釋類有效，但可以查詢以下條件：

Criteria criteria = session.createCriteria(Comment.class)
         .add(Restrictions.eq("commentTopics", topic));

List<Comment> entries = criteria.list();

拋出org.hibernate.exception.DataException：沒有為參數1指定值。

這是建立的查詢：

從注釋this_中，從this_.comment_id = commenttop2_.comment_id上的外部加入comment_topic commenttop2_的注釋中選擇this_.comment_id作為注釋1_0_0_，this_.comment作為注釋0_0_，commenttop2_.comment_id作為注釋1_0_2_，commenttop2_.topic作為topic2_。

我使用的注釋不正確嗎？

條件查詢是否構建正確？

Answer 1

我將CommentTopic枚舉放在CommentTopicWrapper類中。

我將commentTopicsSet的注釋更新為：

@OneToMany(targetEntity = CommentTopicWrapper.class, cascade = CascadeType.ALL, fetch = FetchType.EAGER)
@JoinTable(name = Constants.COMMENTS_TOPIC_JOIN_TABLE, joinColumns = @JoinColumn(name = "comment_id"), inverseJoinColumns = @JoinColumn(name = "topic"))
private Set<CommentTopicWrapper> commentTopics;