001    /**
002     * Copyright (c) 2000-2011 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.util.servlet.filters;
016    
017    import com.liferay.portal.kernel.servlet.Header;
018    import com.liferay.util.servlet.ServletResponseUtil;
019    
020    import java.io.IOException;
021    
022    import java.util.List;
023    import java.util.Map;
024    
025    import javax.servlet.http.HttpServletResponse;
026    
027    /**
028     * @author Alexander Chow
029     */
030    public class CacheResponseUtil {
031    
032            public static void setHeaders(
033                    HttpServletResponse response, Map<String, List<Header>> headers) {
034    
035                    for (Map.Entry<String, List<Header>> entry : headers.entrySet()) {
036                            String headerKey = entry.getKey();
037                            List<Header> headerValues = entry.getValue();
038    
039                            for (Header header : headerValues) {
040                                    int type = header.getType();
041    
042                                    if (type == Header.DATE_TYPE) {
043                                            response.setDateHeader(headerKey, header.getDateValue());
044                                    }
045                                    else if (type == Header.INTEGER_TYPE) {
046                                            response.setIntHeader(headerKey, header.getIntValue());
047                                    }
048                                    else if (type == Header.STRING_TYPE) {
049                                            response.setHeader(headerKey, header.getStringValue());
050                                    }
051                            }
052                    }
053            }
054    
055            public static void write(
056                            HttpServletResponse response, CacheResponseData cacheResponseData)
057                    throws IOException {
058    
059                    setHeaders(response, cacheResponseData.getHeaders());
060    
061                    response.setContentType(cacheResponseData.getContentType());
062    
063                    ServletResponseUtil.write(response, cacheResponseData.getByteBuffer());
064            }
065    
066    }