1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * This library is free software; you can redistribute it and/or modify it under
5    * the terms of the GNU Lesser General Public License as published by the Free
6    * Software Foundation; either version 2.1 of the License, or (at your option)
7    * any later version.
8    *
9    * This library is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11   * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12   * details.
13   */
14  
15  package com.liferay.portal.upload;
16  
17  import java.io.IOException;
18  
19  import javax.servlet.ServletInputStream;
20  import javax.servlet.http.HttpServletRequest;
21  import javax.servlet.http.HttpServletRequestWrapper;
22  
23  /**
24   * <a href="LiferayServletRequest.java.html"><b><i>View Source</i></b></a>
25   *
26   * @author Brian Myunghun Kim
27   * @author Brian Wing Shun Chan
28   */
29  public class LiferayServletRequest extends HttpServletRequestWrapper {
30  
31      public LiferayServletRequest(HttpServletRequest request) {
32          super(request);
33  
34          _request = request;
35      }
36  
37      public ServletInputStream getInputStream() throws IOException {
38          if (_lis == null) {
39              _lis = new LiferayInputStream(_request);
40  
41              return _lis;
42          }
43          else {
44  
45              // Return the cached input stream the second time the user requests
46              // the input stream, otherwise, it will return an empty input stream
47              // because it has already been parsed
48  
49              return _lis.getCachedInputStream();
50          }
51      }
52  
53      private HttpServletRequest _request;
54      private LiferayInputStream _lis = null;
55  
56  }