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.util.servlet.filters;
016    
017    import com.liferay.portal.kernel.servlet.Header;
018    import com.liferay.portal.kernel.servlet.ServletResponseUtil;
019    import com.liferay.portal.kernel.util.ListUtil;
020    
021    import java.io.IOException;
022    
023    import java.util.List;
024    import java.util.Map;
025    
026    import javax.servlet.http.HttpServletResponse;
027    
028    /**
029     * @author Alexander Chow
030     */
031    public class CacheResponseUtil {
032    
033            public static void setHeaders(
034                    HttpServletResponse response, Map<String, List<Header>> headers) {
035    
036                    for (Map.Entry<String, List<Header>> entry : headers.entrySet()) {
037                            String headerKey = entry.getKey();
038                            List<Header> headerValues = ListUtil.copy(entry.getValue());
039    
040                            for (Header header : headerValues) {
041                                    int type = header.getType();
042    
043                                    if (type == Header.COOKIE_TYPE) {
044                                            response.addCookie(header.getCookieValue());
045                                    }
046                                    else if (type == Header.DATE_TYPE) {
047                                            response.setDateHeader(headerKey, header.getDateValue());
048                                    }
049                                    else if (type == Header.INTEGER_TYPE) {
050                                            response.setIntHeader(headerKey, header.getIntValue());
051                                    }
052                                    else if (type == Header.STRING_TYPE) {
053                                            response.setHeader(headerKey, header.getStringValue());
054                                    }
055                            }
056                    }
057            }
058    
059            public static void write(
060                            HttpServletResponse response, CacheResponseData cacheResponseData)
061                    throws IOException {
062    
063                    setHeaders(response, cacheResponseData.getHeaders());
064    
065                    response.setContentType(cacheResponseData.getContentType());
066    
067                    ServletResponseUtil.write(response, cacheResponseData.getByteBuffer());
068            }
069    
070    }