How to remove all Embeddable objects from HashMap with specific key?

Question

Hibernate

@Embeddable
class Item{
String value
}

class R{

@...
Map<Integer, Item> values;
}

The database has a list from R, each has an Embeddable collection with an integer key, so you need to remove all items from the Map using it. How to do it more efficiently?
The fastest, of course, is to execute a native query, but this will be "distance" from Hibernate, etc. etc.
Working but terrible method

List<R> r = JPA.em().createQuery("from R").getResultList();

        for (R resp : r) {

            resp.values.remove(f.getId());
            JPA.em().persist(resp);
        }

Fast and efficient, but minimal attention to Hibernate

Query qRemove = JPA.em().createNativeQuery("delete from r_values where val_id = :id");
        qRemove.setParameter("id", f.getId());
        qRemove.executeUpdate();