@Override
public void addAdoptedParent(Person child, Person parent) {
em.getTransaction().begin();
TypedQuery<Adoption> q =
em.createQuery("select b from Adoption b where b.person.id = :idParam", Adoption.class);
q.setParameter("idParam", child.getId());
List<Adoption> results = (List<Adoption>) q.getResultList();
Adoption a = (results != null && results.size() > 0) ? results.get(0) : null;
if (a != null) {
a.addParent(parent);
em.merge(a);
}
em.getTransaction().commit();
}
