JPA.@ManyToOne 相关字段上的 @Column(updatable=false) [英] JPA. @Column(updatable=false) on @ManyToOne related field

问题描述

在我的可审计实体中，我有字段 creationUser，我不想在 merge 操作时在 db 中更新该字段.

In my auditable entities I have field creationUser which I would like to not update in db on merge operation.

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?请帮忙

So how can I prevent from updating that field? Please help

推荐答案

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

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