I just started with JPA.

I try build some entities and found a problem with @OneToMany behavior.

My annotation is:

@OneToMany(mappedBy="parent")
@JoinColumn(name="parent_id ", insertable=false, updatable=false)
private List<Types> types;

When I merge the entity with this annotation, the parent entity try delete types entities. I don't understand this because these JPA spec reasons:

1. The @OneToMany don't have any cascade information.
2. The owner of relationship is the other entity that have parent attribute.
3. The @JoinColumn isn't insertable and updatable.

Somebody can help me?

Hibernate version:
3.0

You don't need @JoinColumn. This association is immutable already (due mappedBy).

del