java - @OneToOne 与 CascadeType.ALL 没有被删除？

Question

我想在从数据库中删除父对象时删除任何附加的子对象。但它不起作用:

@Entity
public class ParentEntity {
    @Id
    private Long id;    

    //must remain unidirectional
    @OneToOne(cascade = CascadeType.ALL, orphanRemoval = true)
    private MyEntity my;

}

@Entity
public class MyEntity {
    private String text;
}

public interface ParentEntityRepository extends CrudRepository<ParentEntity, Long> {}

当我执行时:

@Autowired
private ParentEntityRepository  dao;

@Transactional
public void removeId(long id) {
      dao.delete(id);
}

结果: MyEntity 行仍然存在于数据库中!为什么？

Answer 1

你可以试试这个

@OneToOne(cascade = CascadeType.DELETE_ORPHAN)
private MyEntity my;

如果不起作用，您可以尝试以下方法:

Hibernate deleting orphans when updating collection