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1   // ========================================================================
2   // Copyright (c) 2006-2009 Mort Bay Consulting Pty. Ltd.
3   // ------------------------------------------------------------------------
4   // All rights reserved. This program and the accompanying materials
5   // are made available under the terms of the Eclipse Public License v1.0
6   // and Apache License v2.0 which accompanies this distribution.
7   // The Eclipse Public License is available at 
8   // http://www.eclipse.org/legal/epl-v10.html
9   // The Apache License v2.0 is available at
10  // http://www.opensource.org/licenses/apache2.0.php
11  // You may elect to redistribute this code under either of these licenses. 
12  // ========================================================================
13  
14  package org.eclipse.jetty.server.handler;
15  
16  import java.io.IOException;
17  
18  import javax.servlet.ServletException;
19  import javax.servlet.http.HttpServletRequest;
20  import javax.servlet.http.HttpServletResponse;
21  
22  import org.eclipse.jetty.server.Handler;
23  import org.eclipse.jetty.server.Request;
24  
25  /* ------------------------------------------------------------ */
26  /** HandlerList.
27   * This extension of {@link HandlerCollection} will call
28   * each contained handler in turn until either an exception is thrown, the response 
29   * is committed or a positive response status is set.
30   */
31  public class HandlerList extends HandlerCollection
32  {
33      /* ------------------------------------------------------------ */
34      /**
35       * @see Handler#handle(String, Request, HttpServletRequest, HttpServletResponse)
36       */
37      @Override
38      public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) 
39          throws IOException, ServletException
40      {
41          Handler[] handlers = getHandlers();
42          
43          if (handlers!=null && isStarted())
44          {
45              for (int i=0;i<handlers.length;i++)
46              {
47                  handlers[i].handle(target,baseRequest, request, response);
48                  if ( baseRequest.isHandled())
49                      return;
50              }
51          }
52      }
53  }