The Staged Event-Driven Architecture (SEDA) is a new design for building scalable Internet services.

				/* 				 * Copyright (c) 2001 by Matt Welsh and The Regents of the University of 				 * California. All rights reserved.				 *				 * Permission to use, copy, modify, and distribute this software and its				 * documentation for any purpose, without fee, and without written agreement is				 * hereby granted, provided that the above copyright notice and the following				 * two paragraphs appear in all copies of this software.				 * 				 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR				 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT				 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF				 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.				 * 				 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,				 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY				 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS				 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO				 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.				 *				 * Author: Matt Welsh 				 * 				 */								package seda.sandStorm.api;								/**				 * This exception can be thrown if an unknown event type was received 				 * by a stage.				 */				public class UnknownEventException extends EventHandlerException { 								  /**				   * The event that was received.				   */				  public QueueElementIF event;								  /**				   * Create a new UnknownEventException with the given explanatory				   * message and event.				   */				  public UnknownEventException(String msg, QueueElementIF event) {				    super(msg);				    this.event = event;				  }				}