/*
 * Copyright 2009-2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jdal.vaadin.auth;

import org.jdal.dao.UserDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;

/**
 * {@link UserDetailsService} implementation delegating to a JDAL {@link UserDao}.
 * 
 * @author Jose Luis Martin
 * @since 2.1
 */
public class DaoUserDetailService implements UserDetailsService {

	@Autowired
	private UserDao userDao;

	/**
	 * Delegates to a JDAL {@link UserDao} to load the {@link UserDetails}
	 */
	@Override
	public UserDetails loadUserByUsername(String username)
			throws UsernameNotFoundException {
		
		UserDetails user = (UserDetails) userDao.findByUsername(username);
		if (user == null)
			throw new UsernameNotFoundException("Username [" + username + "] not found.");
		
		return user;
	}
	
	
}