content: /*
   * Copyright (C) 2013 Glyptodon LLC
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  package org.glyptodon.guacamole.net.basic.crud.connections;
  
  import org.glyptodon.guacamole.GuacamoleException;
  import org.glyptodon.guacamole.net.auth.Connection;
  import org.glyptodon.guacamole.net.auth.ConnectionGroup;
  import org.glyptodon.guacamole.net.auth.Directory;
  import org.glyptodon.guacamole.net.auth.UserContext;
  
  /**
   * A class that provides helper methods for the Connection CRUD servlets.
   * 
   * @author James Muehlner
   */
  class ConnectionUtility {
      
      // This class should not be instantiated
      private ConnectionUtility() {}
      
      /**
       * Get the ConnectionDirectory with the parent connection group specified by
       * parentID.
       * 
       * @param context The UserContext to search for the connection directory.
       * @param parentID The ID of the parent connection group to search for.
       * 
       * @return The ConnectionDirectory with the parent connection group,
       *         if found.
       * @throws GuacamoleException If an error is encountered while getting the
       *                            connection directory.
       */
      static Directory<String, Connection> findConnectionDirectory(
              UserContext context, String parentID) throws GuacamoleException {
          
          // Find the correct connection directory
          ConnectionGroup rootGroup = context.getRootConnectionGroup();
          Directory<String, Connection> directory;
          
          Directory<String, ConnectionGroup> connectionGroupDirectory = 
              rootGroup.getConnectionGroupDirectory();
  
          ConnectionGroup parentGroup = connectionGroupDirectory.get(parentID);
  
          if(parentGroup == null)
              return null;
  
          directory = parentGroup.getConnectionDirectory();
          
          return directory;
      }
  }
  