UserDaoHibernate.java

/*******************************************************************************
 *   Gisgraphy Project 
 * 
 *   This library is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Lesser General Public
 *   License as published by the Free Software Foundation; either
 *   version 2.1 of the License, or (at your option) any later version.
 * 
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 *   Lesser General Public License for more details.
 * 
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
 * 
 *  Copyright 2008  Gisgraphy project 
 *  David Masclet <davidmasclet@gisgraphy.com>
 *  
 *  
 *******************************************************************************/
package com.gisgraphy.dao.hibernate;

import java.util.List;

import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;

import com.gisgraphy.dao.UserDao;
import com.gisgraphy.model.User;

/**
 * This class interacts with Spring's HibernateTemplate to save/delete and
 * retrieve User objects.
 * 
 * @author <a href="mailto:matt@raibledesigns.com">Matt Raible</a> Modified by
 *         <a href="mailto:dan@getrolling.com">Dan Kibler</a> Extended to
 *         implement Acegi UserDetailsService interface by David Carter
 *         david@carter.net Modified by <a href="mailto:bwnoll@gmail.com">Bryan
 *         Noll</a> to work with the new BaseDaoHibernate implementation that
 *         uses generics.
 */
public class UserDaoHibernate extends GenericDaoHibernate<User, Long> implements
	UserDao, UserDetailsService {

    /**
     * Constructor that sets the entity to User.class.
     */
    public UserDaoHibernate() {
	super(User.class);
    }

    /**
     * {@inheritDoc}
     */
    @SuppressWarnings("unchecked")
    public List<User> getUsers() {
   
	return  (List<User>)getHibernateTemplate().find(
		"from User u order by upper(u.username)");
    }

    /**
     * {@inheritDoc}
     */
    public User saveUser(User user) {
	log.debug("user's id: " + user.getId());
	getHibernateTemplate().saveOrUpdate(user);
	// necessary to throw a DataIntegrityViolation and catch it in
	// UserManager
	getHibernateTemplate().flush();
	return user;
    }

    /**
     * Overridden simply to call the saveUser method. This is happenening
     * because saveUser flushes the session and saveObject of BaseDaoHibernate
     * does not.
     * 
     * @param user
     *                the user to save
     * @return the modified user (with a primary key set if they're new)
     */
    @Override
    public User save(User user) {
	return this.saveUser(user);
    }

    /**
     * {@inheritDoc}
     */
    public UserDetails loadUserByUsername(String username)
	    throws UsernameNotFoundException {
	List<?> users = getHibernateTemplate().find(
		"from User where username=?", username);
	if (users == null || users.isEmpty()) {
	    throw new UsernameNotFoundException("user '" + username
		    + "' not found...");
	} else {
	    return (UserDetails) users.get(0);
	}
    }
}