I have a parent child relationship:
Parent --* Child
* Parent cascades all to Child
* class Parent and collection Parent.children are in a process level cache
I want to be able to delete either a Parent -- with cascades to all it's children -- or a Child by itself.
Deleting the Parent is easy:
Code:
session.delete(parent);
This is how I was trying to delete the child:
Code:
session.delete(child);
// in class Child:
public boolean onDelete( Session session ) {
parent.getChildren().remove(this);
}
This code works for deleting all traces of the child ... but breaks the first code example of deleting the parent. This is because modifying the children Collection throws a ConcurrentModificationException since Hibernate is also iterating over the children, processing the cascades.
Is there any way to handle this elegantly? I know that I can create an onDelete() method in Parent that clears the parent of each child but this is ugly since the whole point of cascades is that they are declarative.
Login
FAQ
Search
