1 /**
2 * This file Copyright (c) 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.resources.app.availability;
35
36 import info.magnolia.resourceloader.Resource;
37 import info.magnolia.resourceloader.ResourceOrigin;
38 import info.magnolia.resourceloader.jcr.JcrResource;
39 import info.magnolia.resourceloader.jcr.JcrResourceOrigin;
40 import info.magnolia.resourceloader.layered.LayeredResource;
41
42 import java.util.List;
43
44 import javax.inject.Inject;
45
46 /**
47 * IsJcrOnlyResourceRule evaluates whether a {@link Resource resource} is represented exclusively in JCR resource origin.
48 *
49 * <p>
50 * The evaluation result can be inverted by setting the {@link IsJcrOnlyResourceRuleDefinition#isNegateResult} property.
51 * </p>
52 *
53 * @see IsJcrOnlyResourceRuleDefinition
54 */
55 public class IsJcrOnlyResourceRule extends AbstractResourceAvailabilityRule {
56
57 private final IsJcrOnlyResourceRuleDefinition definition;
58
59 @Inject
60 public IsJcrOnlyResourceRule(ResourceOrigin origin, IsJcrOnlyResourceRuleDefinition definition) {
61 super(origin);
62 this.definition = definition;
63 }
64
65 @Override
66 protected boolean isAvailableFor(Resource resource) {
67 boolean isJcrOnlyResource;
68 if (!(resource instanceof LayeredResource)) {
69 isJcrOnlyResource = resource.getOrigin() instanceof JcrResourceOrigin;
70 } else {
71 final LayeredResource layeredResource = (LayeredResource) resource;
72 final List<Resource> layers = layeredResource.getLayers();
73 isJcrOnlyResource = layers.size() == 1 && layeredResource.getFirst() instanceof JcrResource;
74 }
75
76 return definition.isNegateResult() ? !isJcrOnlyResource : isJcrOnlyResource;
77 }
78 }