Question

I have no DAO service layer in a spring MVC project. IN my controller, I wish to create a criteria query. For this I need a session object to call the “createCriteria(myClass.class)”.

How do I get the session object ?

I saw some people were using the HibernateUtil class like “HibernateUtil.currentSession()”. I tried this but the import cannot be resolved. I posted some of the relvant code to address another issue here Hibernate criteria queries – Query Conditions

Can someone please offer some form of guidance in this regard, Thanks.

Answer 1

Ok, the problem was solved by using the entity manager exposed in the parent entity class. I have a class called person and in there is placed a transient method as follows

@Transient
public static Collection<?> searchResults(JsonJqgridSearchModel jsonJqgridSearchModel){
    HibernateEntityManager hem = Person.entityManager().unwrap(HibernateEntityManager.class);
    Session session = hem.getSession();
    Criteria criteria = session.createCriteria(Person.class);
    Iterator<JqgridSearchCriteria> iterator = jsonJqgridSearchModel.rules.iterator();
        while(iterator.hasNext()){  
            criteria.add(iterator.next().getRestriction());
        }
    return criteria.list();     
}

The main thing is how the HibernateEntityManager and the Session was obtained. Hope this helps someone out there.