001    /**
002     * Copyright (c) 2000-2013 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            public void cleanUp() {
036                    if (_lis != null) {
037                            _lis.cleanUp();
038                    }
039            }
040    
041            @Override
042            public ServletInputStream getInputStream() throws IOException {
043                    if (_lis == null) {
044                            _lis = new LiferayInputStream(_request);
045                    }
046    
047                    if (_finishedReadingOriginalStream) {
048    
049                            // Return the cached input stream the second time the user requests
050                            // the input stream, otherwise, it will return an empty input stream
051                            // because it has already been parsed
052    
053                            if (_cachedInputStream == null) {
054                                    _cachedInputStream = _lis.getCachedInputStream();
055                            }
056    
057                            return _cachedInputStream;
058                    }
059                    else {
060                            return _lis;
061                    }
062            }
063    
064            public void setFinishedReadingOriginalStream(
065                    boolean finishedReadingOriginalStream) {
066    
067                    _finishedReadingOriginalStream = finishedReadingOriginalStream;
068            }
069    
070            private ServletInputStream _cachedInputStream = null;
071            private boolean _finishedReadingOriginalStream = false;
072            private LiferayInputStream _lis = null;
073            private HttpServletRequest _request;
074    
075    }