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1   /**
2    * This file Copyright (c) 2014-2015 Magnolia International
3    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
4    *
5    *
6    * This file is dual-licensed under both the Magnolia
7    * Network Agreement and the GNU General Public License.
8    * You may elect to use one or the other of these licenses.
9    *
10   * This file is distributed in the hope that it will be
11   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12   * implied warranty of MERCHANTABILITY or FITNESS FOR A
13   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14   * Redistribution, except as permitted by whichever of the GPL
15   * or MNA you select, is prohibited.
16   *
17   * 1. For the GPL license (GPL), you can redistribute and/or
18   * modify this file under the terms of the GNU General
19   * Public License, Version 3, as published by the Free Software
20   * Foundation.  You should have received a copy of the GNU
21   * General Public License, Version 3 along with this program;
22   * if not, write to the Free Software Foundation, Inc., 51
23   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24   *
25   * 2. For the Magnolia Network Agreement (MNA), this file
26   * and the accompanying materials are made available under the
27   * terms of the MNA which accompanies this distribution, and
28   * is available at http://www.magnolia-cms.com/mna.html
29   *
30   * Any modifications to this file must keep this entire header
31   * intact.
32   *
33   */
34  package info.magnolia.cms.cache;
35  
36  import java.util.Arrays;
37  
38  import org.apache.commons.lang3.StringUtils;
39  
40  /**
41   * Cache constants.
42   */
43  public final class CacheConstants {
44  
45      //HEADERS
46      public static final String HEADER_EXPIRES = "Expires";
47      public static final String HEADER_PRAGMA = "Pragma";
48      public static final String HEADER_CACHE_CONTROL = "Cache-Control";
49  
50      public static final String HEADER_VALUE_MAX_AGE = "max-age";
51      public static final String HEADER_VALUE_S_MAXAGE = "s-maxage";
52      public static final String HEADER_VALUE_MUST_REVALIDATE = "must-revalidate";
53      public static final String HEADER_VALUE_NO_CACHE = "no-cache";
54      public static final String HEADER_VALUE_NO_STORE = "no-store";
55      public static final String HEADER_VALUE_PRIVATE = "private";
56      public static final String HEADER_VALUE_PUBLIC = "public";
57  
58      public static final String HEADER_CACHE_CONTROL_VALUE_DISABLE_CACHE = StringUtils.join((Arrays.asList(
59              CacheConstants.HEADER_VALUE_NO_CACHE,
60              CacheConstants.HEADER_VALUE_NO_STORE,
61              CacheConstants.HEADER_VALUE_MUST_REVALIDATE,
62              CacheConstants.HEADER_VALUE_MAX_AGE + "=0")), ", ");
63  
64      //custom magnolia headers
65      public static final String HEADER_X_MAGNOLIA_CACHE = "X-Magnolia-Cache";
66      public static final String HEADER_VALUE_X_MAGNOLIA_TTL = "ttlValue";
67      public static final String HEADER_VALUE_TTL = "ttl";
68  
69  }