Question

weirdly I cannot find something simple about this, I’ve got 2 entity, one inside an other and my question is how can I access a property from the sub-entity?

entity 1

@Getter
@Setter
@Entity
public class ObjectA{
    String name;
    String surname;
    ObjectB B;
}

entity 2

@Setter
@Getter
@Entity
ObjectB{
    String family;
    String range;
}

what I want is to access familly and range with a criteria search, so I made this :

public List<ObjectA> search(String name, String surname, String family, String range) {
    Criteria c = HibernateUtil.getSessionFactory().getCurrentSession().createCriteria(ObjectA.class, "a");

if (!name.equals("")) {
    c.add(Restrictions.eq("a.name", name));
}
if (!surname.equals("")) {
    c.add(Restrictions.eq("a.surname", surname));
}
if (!family.equals("")) {
    c.add(Restrictions.eq("a.B.family", family));
}
if (!range.equals("")) {
    c.add(Restrictions.eq("a.B.range", range));
}
return c.list();

}

name and surname can be accessed but family and range cannot.
‘could not resolve property’
What should I do?

thanks =D

Answer 1

You have to create an alias for the subclass property to be able to access it.

Take a look at section 15.4 of the following manual http://docs.jboss.org/hibernate/orm/3.3/reference/en/html/querycriteria.html