[jboss-user] [EJB 3.0] - deleting objects in a Collection based OneToMany mapping

[aberezin]

I am using Jboss 4.0.4.ga and have a OneToMany like this

  @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER, mappedBy = "order")
  public Collection getLineItems() {
    return lineItems;
  }

On the other side, I have this:
  @ManyToOne
  @JoinColumn(name = "order_id")
  public Order getOrder() {
    return order;
  }


I persist an Order with one LineItem.  I then clear the collection of LineItems and repersist (actually call em.merge(Object) ) the Order.
Jboss doesnt appear to delete the underlying row in the LineItem table.

I cant understand from the docs if the cascade = CascadeType.ALL implies that the contained objects should be deleted from the datastore when they are removed from a Collection.  The docs seem to indicate this is not done for a ManyToMany bc it is not possible to know if the objects that are removed from a collection are still referenced by another entity.  However, it does seem that in a OneToMany, JBOSS could know enough to delete the dependent entites from the datastore.

Thanks for any help on this one.


View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3969258#3969258

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3969258