1 /**
2 * This file Copyright (c) 2003-2010 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.cms.util;
35
36 import java.util.Collection;
37 import java.util.LinkedHashMap;
38 import java.util.Properties;
39 import java.util.Set;
40
41 /**
42 * Subclass of java.util.Properties which keeps the order in which properties were loaded,
43 * by delegating to a LinkedHashMap.
44 *
45 * <strong>Warning:</strong> only the java.util.Map interface methods have been
46 * overloaded, so be weary when using java.util.Properties specific methods. (load, save,
47 * getProperty and setProperty are working.) (getProperty had to be explicitly overloaded
48 * too)
49 *
50 * The equals() method respects the Map.equals() contract, since the entrySet() method is
51 * delegating to the LinkedHashMap.
52 *
53 * @author philipp
54 * @version $Id: $
55 */
56 public class OrderedProperties extends Properties {
57 private final LinkedHashMap map = new LinkedHashMap();
58
59 public Object put(Object key, Object value) {
60 return map.put(key, value);
61 }
62
63 public Object get(Object key) {
64 return map.get(key);
65 }
66
67 public String getProperty(String key) {
68 return (String) get(key);
69 }
70
71 public boolean containsValue(Object value) {
72 return this.map.containsValue(value);
73 }
74
75 public boolean containsKey(Object key) {
76 return this.map.containsKey(key);
77 }
78
79 public Set entrySet() {
80 return this.map.entrySet();
81 }
82
83 public Set keySet() {
84 return this.map.keySet();
85 }
86
87 public Collection values() {
88 return this.map.values();
89 }
90
91 public int size() {
92 return this.map.size();
93 }
94
95 public boolean isEmpty() {
96 return this.map.isEmpty();
97 }
98 }