1 //======================================================================== 2 //$Id: ContinuationSupport.java,v 1.1 2005/11/14 17:45:56 gregwilkins Exp $ 3 //Copyright 2004-2005 Mort Bay Consulting Pty. Ltd. 4 //------------------------------------------------------------------------ 5 //Licensed under the Apache License, Version 2.0 (the "License"); 6 //you may not use this file except in compliance with the License. 7 //You may obtain a copy of the License at 8 //http://www.apache.org/licenses/LICENSE-2.0 9 //Unless required by applicable law or agreed to in writing, software 10 //distributed under the License is distributed on an "AS IS" BASIS, 11 //WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 //See the License for the specific language governing permissions and 13 //limitations under the License. 14 //======================================================================== 15 16 package org.mortbay.util.ajax; 17 18 import javax.servlet.http.HttpServletRequest; 19 20 /* ------------------------------------------------------------ */ 21 /** ContinuationSupport. 22 * Conveniance class to avoid classloading visibility issues. 23 * @author gregw 24 * 25 */ 26 public class ContinuationSupport 27 { getContinuation(HttpServletRequest request, Object lock)28 public static Continuation getContinuation(HttpServletRequest request, Object lock) 29 { 30 Continuation continuation = (Continuation) request.getAttribute("org.mortbay.jetty.ajax.Continuation"); 31 if (continuation==null) 32 continuation=new WaitingContinuation(lock); 33 else if (continuation instanceof WaitingContinuation && lock!=null) 34 ((WaitingContinuation)continuation).setMutex(lock); 35 return continuation; 36 } 37 } 38