001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
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 ServletInputStream getInputStream() throws IOException {
036                    if (_lis == null) {
037                            _lis = new LiferayInputStream(_request);
038    
039                            return _lis;
040                    }
041                    else {
042    
043                            // Return the cached input stream the second time the user requests
044                            // the input stream, otherwise, it will return an empty input stream
045                            // because it has already been parsed
046    
047                            return _lis.getCachedInputStream();
048                    }
049            }
050    
051            private HttpServletRequest _request;
052            private LiferayInputStream _lis = null;
053    
054    }