In Hibernate I use to write the following generic code and utilize hibernates org.hibernate.criterion.Example.
http://www.hibernate.org/hib_docs/v3/api/org/hibernate/criterion/Example.html public List<T> findByExample(T exampleCriteria) {
final T t = exampleCriteria;
List<T> list = (List<T>) getJpaTemplate().execute(new JpaCallback() {
public Object doInJpa(javax.persistence.EntityManager em)
throws javax.persistence.PersistenceException {
final Example example = Example.create(t).excludeZeroes();
Criteria criteria = ((Session) em.getDelegate())
.createCriteria(t.getClass()).add(example)
.setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY);
return criteria.list();
}
});
return list;
}
Whats an equivalent in EclipseLink??
