1 /*
2 * XNap Commons
3 *
4 * Copyright (C) 2005 Steffen Pingel
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20 package org.xnap.commons.settings;
21
22 /***
23 * Provides a setting for objects that are instanciated via reflection.
24 */
25 public class ClassNameSetting<T> extends AbstractSetting<T> {
26
27 public ClassNameSetting(SettingResource backend, String key, T defaultValue)
28 {
29 super(backend, key, defaultValue, null);
30 }
31
32 @SuppressWarnings("unchecked")
33 @Override
34 protected T fromString(String value)
35 {
36 try {
37 Class<?> clazz = Class.forName(value);
38 return (T)clazz.newInstance();
39 }
40 catch (IllegalArgumentException e) {
41 }
42 catch (InstantiationException e) {
43 }
44 catch (IllegalAccessException e) {
45 }
46 catch (ClassNotFoundException e) {
47 }
48 return null;
49 }
50
51 @Override
52 protected String toString(T value)
53 {
54 return value.getClass().getName();
55 }
56
57 }