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1   //
2   //  ========================================================================
3   //  Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
4   //  ------------------------------------------------------------------------
5   //  All rights reserved. This program and the accompanying materials
6   //  are made available under the terms of the Eclipse Public License v1.0
7   //  and Apache License v2.0 which accompanies this distribution.
8   //
9   //      The Eclipse Public License is available at
10  //      http://www.eclipse.org/legal/epl-v10.html
11  //
12  //      The Apache License v2.0 is available at
13  //      http://www.opensource.org/licenses/apache2.0.php
14  //
15  //  You may elect to redistribute this code under either of these licenses.
16  //  ========================================================================
17  //
18  
19  package org.eclipse.jetty.server.handler;
20  
21  import java.io.IOException;
22  
23  import javax.servlet.ServletException;
24  import javax.servlet.http.HttpServletRequest;
25  import javax.servlet.http.HttpServletResponse;
26  
27  import org.eclipse.jetty.server.Handler;
28  import org.eclipse.jetty.server.Request;
29  
30  /* ------------------------------------------------------------ */
31  /** HandlerList.
32   * This extension of {@link HandlerCollection} will call
33   * each contained handler in turn until either an exception is thrown, the response 
34   * is committed or a positive response status is set.
35   */
36  public class HandlerList extends HandlerCollection
37  {
38      /* ------------------------------------------------------------ */
39      /**
40       * @see Handler#handle(String, Request, HttpServletRequest, HttpServletResponse)
41       */
42      @Override
43      public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) 
44          throws IOException, ServletException
45      {
46          Handler[] handlers = getHandlers();
47          
48          if (handlers!=null && isStarted())
49          {
50              for (int i=0;i<handlers.length;i++)
51              {
52                  handlers[i].handle(target,baseRequest, request, response);
53                  if ( baseRequest.isHandled())
54                      return;
55              }
56          }
57      }
58  }