Is there no way of making the 'one' the owner side of a one-to-many relationship? Every single sample has mappedBy in @OneToMany. Even the answer to this similar question has that.
I want the one side to be the owning side because when I add a many/child, I also change some information on the one/parent, and I want just to update the parent, for code simplicity and to ensure that it all goes in the same ACID transaction.
But I just can't make it work. Hibernate keeps complaining about
Repeated column in mapping for entity
My entities:
public class Parent {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
@OneToMany(fetch = EAGER, cascade = {ALL}, orphanRemoval = true)
@JoinColumn(name = "parent_id", referencedColumnName = "id", nullable = false)
private final Set<Child> children = new HashSet<>();
}
public class Child {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
@ManyToOne
private Parent parent;
}