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1   /**
2    * This file Copyright (c) 2015-2016 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.context.MgnlContext;
37  import info.magnolia.imaging.ParameterProvider;
38  import info.magnolia.imaging.util.PathSplitter;
39  import info.magnolia.jcr.util.VersionUtil;
40  
41  import javax.jcr.Node;
42  import javax.jcr.RepositoryException;
43  import javax.jcr.Session;
44  
45  import org.apache.commons.lang3.StringUtils;
46  
47  
48  /**
49   * {@link info.magnolia.imaging.ParameterProvider} that is {@link info.magnolia.module.site.theme.Theme}-aware.
50   * Returns a {@link info.magnolia.templating.imaging.parameters.ThemeAwareParameter}.
51   *
52   * @see info.magnolia.templating.imaging.parameters.ThemeAwareParameter
53   * @see info.magnolia.imaging.ParameterProvider
54   */
55  public class ThemeAwareParameterProvider implements ParameterProvider<ThemeAwareParameter> {
56  
57      private final ThemeAwareParameter parameter;
58  
59      public ThemeAwareParameterProvider(String uri) throws RepositoryException {
60  
61          PathSplitter splitter = new PathSplitter(uri);
62          final String siteName = splitter.next();
63          final String variationName = splitter.next();
64          final String workspaceName = splitter.next();
65  
66          String path = StringUtils.substringBeforeLast(splitter.remaining(), "/"); // remove extra tailing filename
67  
68          if (StringUtils.isBlank(path)) {
69              throw new RuntimeException("Can't create a info.magnolia.templating.imaging.parameters.ThemeAwareParameterProvider object for empty path");
70          }
71  
72          final Node node;
73          if (path.startsWith("jcr:system/jcr:versionStorage")) {
74              path = StringUtils.substringBeforeLast(path.substring(0, path.indexOf("/jcr:frozenNode")), "/"); // versioned node
75              String identifier = StringUtils.substringAfterLast(path, "/");
76              String version = StringUtils.substringBefore(StringUtils.substringAfter(uri, identifier + "/"), "/");
77              path = StringUtils.substringBeforeLast(StringUtils.substringAfter(uri, "jcr:frozenNode/"), "/");
78              splitter = new PathSplitter(path);
79  
80              // traverse through children hierarchy of versioned node until the parent of requested node
81              Session session = MgnlContext.getJCRSession(workspaceName);
82              Node versionedNode = VersionUtil.getVersion(session.getNodeByIdentifier(identifier), version);
83  
84              for (int i = 1; i < splitter.count(); i++) {
85                  versionedNode = versionedNode.getNode(splitter.next());
86              }
87              node = versionedNode.getNode(splitter.remaining());
88          } else {
89              // Old implementation was using deprecated HierarchyManager which did not require a leading slash
90              if (!path.startsWith("/")) {
91                  path = "/" + path;
92              }
93              node = MgnlContext.getJCRSession(workspaceName).getNode(path);
94          }
95  
96          parameter = new ThemeAwareParameter(siteName, variationName, node);
97      }
98  
99      @Override
100     public ThemeAwareParameter getParameter() {
101         return parameter;
102     }
103 
104 }