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

Question

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

Trachyte

The error message tells you that @Column and @ManyToOne can't be specified together in this case. Remove @Column! – Gustafson

I can read what was the problem. I dont wanna remove that annotation, cause I need it. Your solution Is not a solution at all. – Trachyte

Answer 1

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

Knightly

Not all heroes wear capes :D – Matins

What if it is a @OneToMany ? – Situla

@OneToMany would have the join column on the other side of the relationship. – Knightly