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1   /**
2    * This file Copyright (c) 2015-2018 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.templating.imaging.parameters;
35  
36  import info.magnolia.imaging.ImageGenerator;
37  import info.magnolia.imaging.ParameterProvider;
38  import info.magnolia.imaging.caching.CachingStrategy;
39  import info.magnolia.jcr.util.NodeTypes;
40  
41  import java.util.Calendar;
42  
43  import javax.jcr.Property;
44  import javax.jcr.RepositoryException;
45  
46  /**
47   * {@link CachingStrategy} for {@link ThemeAwareParameter}.
48   */
49  public class ThemeAwareParameterCachingStrategy implements CachingStrategy<ThemeAwareParameter> {
50  
51      @Override
52      public String getCachePath(ImageGenerator<ParameterProvider<ThemeAwareParameter>> generator, ParameterProvider<ThemeAwareParameter> parameterProvider) {
53          return parameterProvider.getParameter().getCachePath();
54      }
55  
56      @Override
57      public boolean shouldRegenerate(Property cachedBinary, ParameterProvider<ThemeAwareParameter> parameterProvider) throws RepositoryException {
58          final Calendar cacheLastMod = NodeTypes.LastModified.getLastModified(cachedBinary.getParent().getParent());
59          final Calendar srcLastMod = NodeTypes.LastModified.getLastModified(parameterProvider.getParameter().getNode());
60  
61          return cacheLastMod.before(srcLastMod);
62      }
63  
64  }