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Posted to users@tapestry.apache.org by limonn <in...@limonn.com> on 2008/08/23 17:50:08 UTC
inyect Session not working for hibernate
Hi guys !
I m trying to expand one of the main tutorials
http://www.infoq.com/articles/tapestry5-intro Tapestry for Nonbelievers
bringing data from database through hibernate.
import org.apache.tapestry5.ioc.annotations.Inject;
import org.apache.tapestry5.tutorial.entities.User;
import org.apache.tapestry5.tutorial.services.UserDAO;
import org.hibernate.Session;
If I do at the start class
@Inject
private Session session;
public List<User> getUserList()
{
return session.createCriteria(User.class).list();
}
Works OK !!
but if I use the same at
public class UserDAOImpl implements UserDAO {
@Inject
private Session session; // Why this is null ???????????
public UserDAOImpl(){
}
public List<User> findAllUsers()
{
return session.createCriteria(User.class).list();
}
I get a null pointer exception at session because is null
Why session is null with the same inject annotation here and not there
then at the start class I wanted to do :
@Inject
private UserDAO userDAO;
public List<User> getUserList()
{
return userDAO.findAllUsers();
}
but null pointer exception at UserDAOImpl
-----
Raul Rosenzvaig
www.limonn.com
--
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Re: inyect Session not working for hibernate
Posted by Sven Homburg <ho...@googlemail.com>.
you cant use the @Inject Annotation in other class types than pages,
components or mixins
2008/8/23 limonn <in...@limonn.com>
>
> Hi guys !
>
> I m trying to expand one of the main tutorials
> http://www.infoq.com/articles/tapestry5-intro Tapestry for Nonbelievers
> bringing data from database through hibernate.
>
> import org.apache.tapestry5.ioc.annotations.Inject;
> import org.apache.tapestry5.tutorial.entities.User;
> import org.apache.tapestry5.tutorial.services.UserDAO;
> import org.hibernate.Session;
>
>
> If I do at the start class
>
> @Inject
> private Session session;
>
> public List<User> getUserList()
> {
> return session.createCriteria(User.class).list();
> }
>
> Works OK !!
>
> but if I use the same at
>
> public class UserDAOImpl implements UserDAO {
>
> @Inject
> private Session session; // Why this is null ???????????
>
>
> public UserDAOImpl(){
>
> }
>
> public List<User> findAllUsers()
> {
> return session.createCriteria(User.class).list();
> }
>
> I get a null pointer exception at session because is null
>
> Why session is null with the same inject annotation here and not there
>
> then at the start class I wanted to do :
>
> @Inject
> private UserDAO userDAO;
>
> public List<User> getUserList()
> {
> return userDAO.findAllUsers();
> }
>
> but null pointer exception at UserDAOImpl
>
> -----
> Raul Rosenzvaig
> www.limonn.com
> --
> View this message in context:
> http://www.nabble.com/inyect-Session-not-working-for-hibernate-tp19122647p19122647.html
> Sent from the Tapestry - User mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>
--
with regards
Sven Homburg
http://www.chenillekit.org
http://tapestry5-components.googlecode.com
Re: inyect Session not working for hibernate
Posted by Sven Homburg <ho...@googlemail.com>.
look for this sample
http://www.chenillekit.org/chenillekit-hibernate/doa_sample.html
2008/8/23 limonn <in...@limonn.com>
>
> Hi guys !
>
> I m trying to expand one of the main tutorials
> http://www.infoq.com/articles/tapestry5-intro Tapestry for Nonbelievers
> bringing data from database through hibernate.
>
> import org.apache.tapestry5.ioc.annotations.Inject;
> import org.apache.tapestry5.tutorial.entities.User;
> import org.apache.tapestry5.tutorial.services.UserDAO;
> import org.hibernate.Session;
>
>
> If I do at the start class
>
> @Inject
> private Session session;
>
> public List<User> getUserList()
> {
> return session.createCriteria(User.class).list();
> }
>
> Works OK !!
>
> but if I use the same at
>
> public class UserDAOImpl implements UserDAO {
>
> @Inject
> private Session session; // Why this is null ???????????
>
>
> public UserDAOImpl(){
>
> }
>
> public List<User> findAllUsers()
> {
> return session.createCriteria(User.class).list();
> }
>
> I get a null pointer exception at session because is null
>
> Why session is null with the same inject annotation here and not there
>
> then at the start class I wanted to do :
>
> @Inject
> private UserDAO userDAO;
>
> public List<User> getUserList()
> {
> return userDAO.findAllUsers();
> }
>
> but null pointer exception at UserDAOImpl
>
> -----
> Raul Rosenzvaig
> www.limonn.com
> --
> View this message in context:
> http://www.nabble.com/inyect-Session-not-working-for-hibernate-tp19122647p19122647.html
> Sent from the Tapestry - User mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>
--
with regards
Sven Homburg
http://www.chenillekit.org
http://tapestry5-components.googlecode.com