Creating alias in Hibernate to reference subclass issue

Question

I am trying to create some aliases to build a criteria to search by properties of many subclasses. Here is my model:

public abstract class Entity {

protected int id;
protected PartyBasicGroup partyBasicGroup;

}

public class Person extends Entity {

}

public class Organization extends Entity {

protected PartyBasicGroup signatoryBasicGroup;
protected String jobTitle;  
}

I am trying to create some aliases for Person and Organization as follows:

criteria = criteria.createAlias("entity.person", "person", JoinType.LEFT_OUTER_JOIN);
criteria = criteria.createAlias("entity.organization", "organization", JoinType.LEFT_OUTER_JOIN);

But I'm getting an error:

Couldn't resolve property person for Entity

Any help to fix this issue? I just wanna know how to create aliases to reference subclasses in order to access subclasses properties.

Thanks!

Answer 1

I don't understand why you want to use aliases here. The following should be enough :

Criteria criteria = session.createCriteria(Organization.class);
criteria = criteria.add(Restrictions.eq("jobTitle", "XYZ"));
List<Organization> organizations = (List<Organization>) criteria.list();