001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.upload;
016    
017    import java.io.IOException;
018    
019    import javax.servlet.ServletInputStream;
020    import javax.servlet.http.HttpServletRequest;
021    import javax.servlet.http.HttpServletRequestWrapper;
022    
023    /**
024     * @author Brian Myunghun Kim
025     * @author Brian Wing Shun Chan
026     */
027    public class LiferayServletRequest extends HttpServletRequestWrapper {
028    
029            public LiferayServletRequest(HttpServletRequest request) {
030                    super(request);
031    
032                    _request = request;
033            }
034    
035            @Override
036            public ServletInputStream getInputStream() throws IOException {
037                    if (_lis == null) {
038                            _lis = new LiferayInputStream(_request);
039    
040                            return _lis;
041                    }
042                    else {
043    
044                            // Return the cached input stream the second time the user requests
045                            // the input stream, otherwise, it will return an empty input stream
046                            // because it has already been parsed
047    
048                            return _lis.getCachedInputStream();
049                    }
050            }
051    
052            private LiferayInputStream _lis = null;
053            private HttpServletRequest _request;
054    
055    }