Hi.
Is it possible in JPA to reference entities from another, and have them
automatically delete if the reference is just removed?
I.e. if the entity is:
public class E_Campaign implements Accounted {
@Id
private long id;
@OneToMany(cascade = CascadeType.ALL, mappedBy = "campaign")
private Collection<E_VehicleAssociation> vehicles;
}
And the dependent entity is:
public class E_VehicleAssociation {
@Id
private long id;
@ManyToOne
private E_Campaign campaign;
}
Is it possible to do something like this, and have that delete the
dependent entity:
campaign.getVehicles().remove(0);
em.merge(campaign);
I.e., I'm removing the reference to an element of campaign.vehicles() would
remove that entity from the VehicleAssociation table? More specifically,
I'm interested in auto-deleting all entities that are references by a
particular campaign, and want to avoid iterating and deleting.
Thank you!
Pawel.
P.S. Any idea when JPA2.1 will be implemented by OpenJPA? :)
