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 }