JPA.@ManyToOne相关字段上的@Column(updatable = false)

Question

在我的可审计实体中,我有一个字段creationUser,我不想在db merge操作中更新.

这是我的实体代码:

@Column(updatable=false) 
@ManyToOne(cascade = CascadeType.MERGE)
public User creationUser;

但它给了我一个错误:

Unexpected exception
PersistenceException: [PersistenceUnit: defaultPersistenceUnit] Unable to build EntityManagerFactory
Caused by: org.hibernate.AnnotationException: @Column(s) not allowed on a @ManyToOne property: models.AreaOfMedicine.creationUser

那么如何防止更新该字段呢？请帮忙

Answer 1

用@JoinColumn(updatable = false)而不是@Column(updatable = false).