1 /**
2 * This file Copyright (c) 2011 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.jcr.wrapper;
35
36 import javax.jcr.Node;
37 import javax.jcr.Property;
38 import javax.jcr.RepositoryException;
39 import javax.jcr.Value;
40
41 import info.magnolia.exception.RuntimeRepositoryException;
42 import info.magnolia.jcr.decoration.NodePredicateContentDecorator;
43 import info.magnolia.jcr.predicate.AbstractPredicate;
44
45 /**
46 * ContentDecorator that hides content based on a multi value property called channels.
47 *
48 * @version $Id$
49 */
50 public class ChannelVisibilityContentDecorator extends NodePredicateContentDecorator {
51
52 private static class ChannelVisibilityPredicate extends AbstractPredicate<Node> {
53
54 public static final String CHANNEL_PROPERTY_NAME = "channels";
55
56 private final String currentChannel;
57
58 private ChannelVisibilityPredicate(String currentChannel) {
59 this.currentChannel = currentChannel;
60 }
61
62 @Override
63 public boolean evaluateTyped(Node node) {
64 try {
65 if (currentChannel == null || currentChannel.equalsIgnoreCase("all")) {
66 return true;
67 }
68 if (node.hasProperty(CHANNEL_PROPERTY_NAME)) {
69 Property channel = node.getProperty(CHANNEL_PROPERTY_NAME);
70 if (channel.isMultiple()) {
71 Value[] values = channel.getValues();
72 if (values.length == 0) {
73 return true;
74 }
75 for (Value value : values) {
76 if (value.getString().equals(currentChannel)) {
77 return true;
78 }
79 }
80 return false;
81 }
82 }
83 return true;
84
85 } catch (RepositoryException e) {
86 throw new RuntimeRepositoryException(e);
87 }
88 }
89 }
90
91 public ChannelVisibilityContentDecorator(String currentChannel) {
92 super(new ChannelVisibilityPredicate(currentChannel));
93 }
94 }