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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