1 /**
2 * This file Copyright (c) 2017 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.rest.delivery.jcr.filter;
35
36 import info.magnolia.jcr.iterator.FilteringRangeIterator;
37 import info.magnolia.jcr.wrapper.ChildFilteringContentDecorator;
38
39 import javax.jcr.Node;
40 import javax.jcr.NodeIterator;
41 import javax.jcr.RepositoryException;
42
43 /**
44 * NodeIterator that applies wrappers and filtering by depth.
45 */
46 public class DepthFilteringDecoratorNodeIterator extends FilteringRangeIterator<Node> implements NodeIterator {
47
48 private final int depth;
49
50 public DepthFilteringDecoratorNodeIterator(NodeIterator nodeIterator, int depth) {
51 super(nodeIterator);
52 this.depth = depth;
53 }
54
55 @Override
56 public Node next() {
57 return wrapNode(super.next());
58 }
59
60 @Override
61 public Node nextNode() {
62 return wrapNode(super.next());
63 }
64
65 @Override
66 protected boolean evaluate(Node node) {
67 return true;
68 }
69
70 protected Node wrapNode(Node node) {
71 try {
72 ChildFilteringContentDecorator depthDecorator = new ChildFilteringContentDecorator(new DepthFilteringPredicate(node.getDepth(), node.getDepth() + depth), true);
73 return depthDecorator.wrapNode(node);
74 } catch (RepositoryException e) {
75 // do nothing
76 }
77
78 return node;
79 }
80 }