Prayer for better solution for one-to-many all-delete-orphan

pstruhos · **Joined:** Fri Nov 21, 2003 10:23 am **Posts:** 81

Dear Hibernate developers, please,
change behaviour of Session.update function with object mapping one-to-many bidirectional with all-delete-orphan.

Don't rely on hibernate implementation of Set to be able to delete orphaned childs from Set owned by Parent.

It is possible to do it relatively easy:

Thanks very much in advance.

mappings in Parent and Child objects:

Code:

    /**
     * @hibernate.set inverse="true" cascade="all-delete-orphan" lazy="true"
     * @hibernate.collection-key column="parentId"
     * @hibernate.collection-one-to-many class="com.domainmodel.Child"
     */
    public Set getChilds() {
        return childs;
    }


    /**
     * @hibernate.many-to-one column="parentId" class="com.domainmodel.Parent"  not-null="true"
     */
    public Parent getParent() {
        return parent;
    }

keywords:
deleting childs from one-to-many bidirectional relation
how to delete childs from one-to-many bidirectional relation
delete of childs from one-to-many bidirectional relation does not work

borak · **Posted:** Fri May 27, 2005 4:30 am

I think below should work:

List list = parent.getChilds();
for (int i=0; i< list.size(); i++) {
Child c = (Child ) list.get(i);
c.setParent(null);
}

saveOrUpdate(parent);

pstruhos · **Joined:** Fri Nov 21, 2003 10:23 am **Posts:** 81

I don't want to read all childs before update on server side. The bunch comes from client f.e. webservices and deleted childs are simply not present in Set.

To avoid manual programming of loading childs, removing deleted, etc., it must be done directly in Hibernate.