userdaoimpl.java

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package sample.portlet.dao.hibernate3;

import java.util.Collection;
import java.util.List;

import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import sample.portlet.dao.UserDao;
import sample.portlet.domain.User;

public class UserDaoImpl extends HibernateDaoSupport implements UserDao {

	public User getUserById(Long userId) {
		return (User) getHibernateTemplate().load(User.class, userId);
	}

	public Collection findAll() {
		return (List) getHibernateTemplate().find(
				"from " + User.class.getName());
	}

	public void updateUser(User user) {
		getHibernateTemplate().update(user);
	}
	
	public void removeUser(User user) {
		getHibernateTemplate().delete(user);
	}
	
	public void saveUser(User user) {
		getHibernateTemplate().save(user);
	}
	
	public User getUserByUsername(String username) {
		List list = getHibernateTemplate().find("from " + User.class.getName() + " a where a.username = '" + username + "'");
		if (list.size() > 0) {
			return (User) list.get(0);
		} else {
			return null;
		}
	}

}