1 /**
2 * This file Copyright (c) 2013 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.predicate;
35
36 import info.magnolia.jcr.util.NodeUtil;
37
38 import javax.jcr.Node;
39 import javax.jcr.RepositoryException;
40
41 import org.apache.commons.lang.StringUtils;
42 import org.slf4j.Logger;
43 import org.slf4j.LoggerFactory;
44
45 /**
46 * Predicate filtering nodes based on property name. <br>
47 * Only validate node that have a property with the desired name.
48 */
49 public class NodePropertyNamePredicate extends AbstractPredicate<Node> {
50
51 private static final Logger log = LoggerFactory.getLogger(NodePropertyNamePredicate.class);
52 private final String propertyName;
53
54 public NodePropertyNamePredicate(String propertyName) {
55 if (StringUtils.isBlank(propertyName)) {
56 throw new IllegalArgumentException("The value of 'propertyName' must not be blank.");
57 }
58 this.propertyName = propertyName;
59 }
60
61 @Override
62 public boolean evaluateTyped(Node t) {
63 try {
64 return t.hasProperty(propertyName);
65 } catch (RepositoryException e) {
66 log.error("Failed to read property for node {}", NodeUtil.getName(t));
67 return false;
68 }
69 }
70
71 }