JPA. @Column(updatable=false) on @ManyToOne related field

问题

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

Here is my entity code:

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

But it gives me an error:

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

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

回答1:

Use @JoinColumn(updatable = false) instead of @Column(updatable = false).

来源：https://stackoverflow.com/questions/29917148/jpa-columnupdatable-false-on-manytoone-related-field