Hibernate: ORDER BY using Criteria API

Question

Hi guys,

When I write a HQL query

Query q = session.createQuery("SELECT cat from Cat as cat ORDER BY cat.mother.kind.value");
return q.list();

Everything is fine. However, when I write a Criteria

Criteria c = session.createCriteria(Cat.class);
c.addOrder(Order.asc("mother.kind.value"));
return c.list();

I get an exception org.hibernate.QueryException: could not resolve property: kind.value of: my.sample.data.entities.Cat

If I want to use Criteria and Order, how should I express my "order by"?

Cheers

Nik

Answer 1

Hi niklassaers. It's hard to know for sure without seeing the mappings (see @Juha's comment), but I think you want something like the following:

Criteria c = session.createCriteria(Cat.class);
Criteria c2 = c.createCriteria("mother");
Criteria c3 = c2.createCriteria("kind");
c3.addOrder(Order.asc("value"));
return c.list();

Answer 2

You need to create an alias for the mother.kind. You do this like so.

Criteria c = session.createCriteria(Cat.class);
c.createAlias("mother.kind", "motherKind");
c.addOrder(Order.asc("motherKind.value"));
return c.list();