1 /**
2 * This file Copyright (c) 2011-2018 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.jcr.decoration;
35
36 import info.magnolia.jcr.RuntimeRepositoryException;
37 import info.magnolia.jcr.predicate.AbstractPredicate;
38
39 import javax.jcr.Node;
40 import javax.jcr.Property;
41 import javax.jcr.RepositoryException;
42
43 /**
44 * {@link ContentDecorator} that applies a predicate to all nodes and properties in a JCR object graph. The predicate is checked
45 * against all parent nodes and for properties its tested on their node and all its parents. This effectively hides the
46 * entire sub-tree below a node that doesn't match the predicate.
47 */
48 public class NodePredicateContentDecorator extends AbstractContentDecorator {
49
50 private AbstractPredicate<Node> nodePredicate = new TruePredicate<>();
51 private AbstractPredicate<Property> propertyPredicate = new TruePredicate<>();
52
53 public NodePredicateContentDecorator() {
54 }
55
56 public NodePredicateContentDecorator(AbstractPredicate<Node> nodePredicate) {
57 this.nodePredicate = nodePredicate;
58 }
59
60 @Override
61 public boolean evaluateNode(Node node) {
62 try {
63 while (node.getDepth() != 0) {
64 if (!nodePredicate.evaluate(node)) {
65 return false;
66 }
67 node = node.getParent();
68 }
69 return true;
70 } catch (RepositoryException e) {
71 throw new RuntimeRepositoryException(e);
72 }
73 }
74
75 @Override
76 public boolean evaluateProperty(Property property) {
77 try {
78 return evaluateNode(property.getParent()) && propertyPredicate.evaluate(property);
79 } catch (RepositoryException e) {
80 throw new RuntimeRepositoryException(e);
81 }
82 }
83
84 @Override
85 public boolean isMultipleWrapEnabled() {
86 return true;
87 }
88
89 public AbstractPredicate<Node> getNodePredicate() {
90 return nodePredicate;
91 }
92
93 public void setNodePredicate(AbstractPredicate<Node> nodePredicate) {
94 this.nodePredicate = nodePredicate;
95 }
96
97 public AbstractPredicate<Property> getPropertyPredicate() {
98 return propertyPredicate;
99 }
100
101 public void setPropertyPredicate(AbstractPredicate<Property> propertyPredicate) {
102 this.propertyPredicate = propertyPredicate;
103 }
104
105 private static class TruePredicate<T> extends AbstractPredicate<T> {
106 @Override
107 public boolean evaluateTyped(T node) {
108 return true;
109 }
110 }
111 }