A collection with cascade=“all-delete-orphan” was no longer referenced by the owning entity instance

Question

In my application, a hibernate operation goes like this. The application updates a parent entity with new values from the request and deletes all the existing (previously insert

Answer 1

I faced the same issue and get it solved as follows:

1- add {CascadeType.ALL}, orphanRemoval=true in all @OneToMany annotations in all entity Childs of that element.

2- Check the hashcode() and equalls() of those entities, some times they have erros

3- Don't use parent.setChilds(newChilds); as the engine will ask for missing the reference to the childs, but use instead use

parent.getChilds().clear();
parent.getChilds().add(Child);

or

parent.getChilds().addAll(Childs);

Those steps solved my issue after 4 Hours of research