我有一个实体:
@NamedEntityGraph(
name = "paragraph-graph-questions",
attributeNodes = {
@NamedAttributeNode(value = "questions")
})
@Entity
@Table(name = "paragraphs")
public class Paragraph {
@Id
private Integer id;
@OneToMany(mappedBy = "paragraph")
private Set<Question> questions;
@OneToMany
@JoinTable(
name = "sub_paragraphs",
joinColumns = @JoinColumn(name = "paragraph_id"),
inverseJoinColumns = @JoinColumn(name = "sub_paragraph_id")
)
private Set<Paragraph> subParagraphs;
}
我试着去 subParagraphs
集合中的集合和段落对象必须没有惰性 questions
设置。我使用这个查询:
@EntityGraph(value = "paragraph-graph-questions")
@Query("SELECT p.subParagraphs FROM Paragraph p WHERE p.id=:id")
Set<Paragraph> getAllSubParagraphs(int id);
它抛出异常:
java.lang.IllegalArgumentException: org.hibernate.QueryException: query specified join fetching, but the owner of the fetched association was not present in the select list
在我的情况下,我能做些什么来修复异常?
暂无答案!
目前还没有任何答案,快来回答吧!