1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.util.servlet.filters;
24  
25  import com.liferay.util.servlet.Header;
26  import com.liferay.util.servlet.ServletResponseUtil;
27  
28  import java.io.IOException;
29  
30  import java.util.List;
31  import java.util.Map;
32  
33  import javax.servlet.http.HttpServletResponse;
34  
35  /**
36   * <a href="CacheResponseUtil.java.html"><b><i>View Source</i></b></a>
37   *
38   * @author Alexander Chow
39   *
40   */
41  public class CacheResponseUtil {
42  
43      public static void addHeaders(
44              HttpServletResponse response, Map<String, List<Header>> headers)
45          throws IOException {
46  
47          for (Map.Entry<String, List<Header>> entry : headers.entrySet()) {
48              String headerKey = entry.getKey();
49              List<Header> headerValues = entry.getValue();
50  
51              for (Header header : headerValues) {
52                  int type = header.getType();
53  
54                  if (type == Header.DATE_TYPE) {
55                      response.addDateHeader(headerKey, header.getDateValue());
56                  }
57                  else if (type == Header.INTEGER_TYPE) {
58                      response.addIntHeader(headerKey, header.getIntValue());
59                  }
60                  else if (type == Header.STRING_TYPE) {
61                      response.addHeader(headerKey, header.getStringValue());
62                  }
63              }
64          }
65      }
66  
67      public static void write(
68              HttpServletResponse response, CacheResponseData cacheResponseData)
69          throws IOException {
70  
71          addHeaders(response, cacheResponseData.getHeaders());
72  
73          response.setContentType(cacheResponseData.getContentType());
74  
75          ServletResponseUtil.write(response, cacheResponseData.getData());
76      }
77  
78  }