1 /**
2 * This file Copyright (c) 2015 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.ui.contentapp;
35
36 import info.magnolia.context.Context;
37
38 import com.rits.cloning.Cloner;
39
40 /**
41 * Up until Magnolia 5.4, we were using {@link Cloner} directly. To avoid duplicating configuration code everywhere,
42 * we're introducing this wrapper which pre-configures it to work nicely with our definition objects.
43 *
44 * Specifically, it prevents cloning {@link Context}.
45 *
46 * Note: Initially we wanted to avoid cloning all proxy {@link net.sf.cglib.proxy.Callback} fields of definitions, which we
47 * use extensively in the i18n mechanism. But that leads to the cloned object to still delegate method calls to the original
48 * due to proxy specifics.
49 */
50 public class DefinitionCloner {
51 private final Cloner cloner;
52
53 public DefinitionCloner() {
54 this.cloner = new Cloner();
55 cloner.dontCloneInstanceOf(Context.class);
56 }
57
58 public <T> T deepClone(final T definition) {
59 return cloner.deepClone(definition);
60 }
61 }