code: /*
   * Computoser is a music-composition algorithm and a website to present the results
   * Copyright (C) 2012-2014  Bozhidar Bozhanov
   *
   * Computoser is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Affero General Public License as
   * published by the Free Software Foundation, either version 3 of the
   * License, or (at your option) any later version.
   *
   * Computoser 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 Affero General Public License for more details.
   *
   * You should have received a copy of the GNU Affero General Public License
   * along with Computoser.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  package com.music.service.auth;
  
  import java.util.List;
  import java.util.Set;
  
  import javax.inject.Inject;
  
  import org.springframework.social.connect.Connection;
  import org.springframework.social.connect.ConnectionFactoryLocator;
  import org.springframework.social.connect.ConnectionRepository;
  import org.springframework.social.connect.UsersConnectionRepository;
  import org.springframework.stereotype.Service;
  
  import com.google.common.collect.Lists;
  import com.music.dao.UserDao;
  import com.music.model.persistent.SocialAuthentication;
  import com.music.service.UserService;
  
  @Service
  public class JpaUsersConnectionRepository implements UsersConnectionRepository {
      @Inject
      private UserDao userDao;
  
      @Inject
      private UserService userService;
  
      @Inject
      private ConnectionFactoryLocator locator;
      @Override
      public List<String> findUserIdsWithConnection(Connection<?> connection) {
          List<SocialAuthentication> auths = userDao.getSocialAuthentications(connection.getKey()
                  .getProviderId(), connection.getKey().getProviderUserId());
          List<String> userIds = Lists.newArrayList();
          for (SocialAuthentication auth : auths) {
              userIds.add(String.valueOf(auth.getUser().getId()));
          }
          return userIds;
      }
  
      @Override
      public Set<String> findUserIdsConnectedTo(String providerId, Set<String> providerUserIds) {
          // TODO Auto-generated method stub
          return null;
      }
  
      @Override
      public ConnectionRepository createConnectionRepository(String userId) {
          return new JpaConnectionRepository(Long.parseLong(userId), userService, userDao, locator);
      }
  }
  