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I want to get one row data from the database using the session query, but anyone can help me with this how to get one object from the database with the hibernate query? Get a list of data is like this:
import org.zkoss.zkplus.hibernate.*;
import java.util.Date;
import java.util.List;
public class EventDAO {
org.hibernate.Session _session;
public EventDAO() {
_session = HibernateUtil.getSessionFactory().getCurrentSession();
}
public void saveOrUpdate(Event anEvent, String title, Date date) {
anEvent.setTitle(title);
anEvent.setDate(date);
_session.saveOrUpdate(anEvent);
}
public void delete(Event anEvent) {
_session.delete(anEvent);
}
public Event findById(Long id) {
return (Event) _session.load(Event.class, id);
}
public List findAll() {
return _session.createQuery("from Event").list();
}
}
I just want to get one Event object with a sql sentense just like: from events where time > '2010-03-23 00:00:01' order by time asc limit 1;
Can any one help me ? Thanks a lot. ^_^
You should add a findFirstByDate(Date theDate) to your DAO and call it passing it your required date.
public Event findFirstByDate(Date theDate)
{
Event result = null ;
Query query =_session.createQuery("from Event where time > ? order by time asc limit 1" ) ;
query.setDate( 1, theDate ) ;
List results = query.list() ;
if ( results != null
&& results.size() > 0 )
result = results.get(0) ;
return result ;
}
Completely untested code; YMMV.
Asked: 2010-03-24 17:32:20 +0800
Seen: 240 times
Last updated: Mar 24 '10