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 {
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 }