1 /**
2 * This file Copyright (c) 2011 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.info/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.cms.util;
35
36 import info.magnolia.cms.core.Content;
37 import info.magnolia.cms.core.HierarchyManager;
38 import info.magnolia.cms.core.NodeData;
39 import info.magnolia.context.MgnlContext;
40
41 import java.io.Serializable;
42
43 import javax.jcr.RepositoryException;
44
45 import org.slf4j.Logger;
46 import org.slf4j.LoggerFactory;
47
48 /**
49 * Stores a path and will re-fetch the node data in {@link #getWrappedNodeData()} if the session is closed.
50 *
51 * @author ochytil
52 * @version $Id$
53 */
54 public class LazyNodeDataWrapper extends NodeDataWrapper implements Serializable {
55 private static final Logger log = LoggerFactory.getLogger(LazyNodeDataWrapper.class);
56
57 private String repository;
58
59 private String path;
60
61 private transient NodeData nodeData;
62
63 public LazyNodeDataWrapper(NodeData nodeData) {
64 this.setRepository(nodeData.getHierarchyManager().getWorkspace().getName());
65 this.setPath(nodeData.getHandle());
66 this.nodeData = nodeData;
67 }
68
69 @Override
70 public NodeData getWrappedNodeData() {
71 try {
72 // DHM.getNodeData() can still return null and the var itself is transient and won't survive serialization
73 if (nodeData == null || (nodeData.isExist() && !nodeData.getJCRProperty().getSession().isLive())) {
74 nodeData = getHierarchyManager().getNodeData(getPath());
75 }
76 }
77 catch (RepositoryException e) {
78 log.error("can't reinitialize node " + getPath(), e);
79 }
80 return nodeData;
81 }
82
83 @Override
84 public HierarchyManager getHierarchyManager() {
85 return MgnlContext.getSystemContext().getHierarchyManager(getRepository());
86 }
87
88 protected void setPath(String uuid) {
89 this.path = uuid;
90 }
91
92 protected String getPath() {
93 return path;
94 }
95
96 protected void setRepository(String repository) {
97 this.repository = repository;
98 }
99
100 protected String getRepository() {
101 return repository;
102 }
103
104 @Override
105 protected Content wrap(Content content) {
106 return new LazyContentWrapper(content);
107 }
108 }