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

Your last snippet of Java code doesn't compile. I guess it looks like

parent.getChilds().clear(); // note: you should name it children rather than childs
parent.setChilds(someNewSetOfChildren):

Don't do the last instruction. Instead of replacing the set by another one, clear the set and add the new children to the cleared set:

parent.clearChildren();
parent.addChildren(someNewSetOfChildren);

where the methods are defined as:

public void clearChildren() {
    this.children.clear();
}

public void addChildren(Collection children) {
    this.children.addAll(children);
}

The setChildren method should be removed completely, or it should be replaced with the following implementation:

public void setChildren(Collection children) {
    this.children.clear();
    this.children.addAll(children);
}