1 | /* |
2 | Copyright (C) 2002-2004 MySQL AB |
3 | |
4 | This program is free software; you can redistribute it and/or modify |
5 | it under the terms of version 2 of the GNU General Public License as |
6 | published by the Free Software Foundation. |
7 | |
8 | There are special exceptions to the terms and conditions of the GPL |
9 | as it is applied to this software. View the full text of the |
10 | exception in file EXCEPTIONS-CONNECTOR-J in the directory of this |
11 | software distribution. |
12 | |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | GNU General Public License for more details. |
17 | |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software |
20 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
21 | |
22 | |
23 | |
24 | */ |
25 | package com.mysql.jdbc; |
26 | |
27 | import java.text.MessageFormat; |
28 | import java.util.Locale; |
29 | import java.util.MissingResourceException; |
30 | import java.util.ResourceBundle; |
31 | |
32 | /** |
33 | * Support for localized messages. |
34 | * |
35 | * @author Mark Matthews |
36 | * @version $Id: Messages.java 3726 2005-05-19 15:52:24Z mmatthews $ |
37 | */ |
38 | public class Messages { |
39 | |
40 | private static final String BUNDLE_NAME = "com.mysql.jdbc.LocalizedErrorMessages"; //$NON-NLS-1$ |
41 | |
42 | private static final ResourceBundle RESOURCE_BUNDLE; |
43 | |
44 | static { |
45 | ResourceBundle temp = null; |
46 | |
47 | // |
48 | // Overly-pedantic here, some appserver and JVM combos don't deal |
49 | // well with the no-args version, others don't deal well with |
50 | // the three-arg version, so we need to try both :( |
51 | // |
52 | |
53 | try { |
54 | temp = ResourceBundle.getBundle(BUNDLE_NAME, Locale.getDefault(), |
55 | Messages.class.getClassLoader()); |
56 | } catch (Throwable t) { |
57 | try { |
58 | temp = ResourceBundle.getBundle(BUNDLE_NAME); |
59 | } catch (Throwable t2) { |
60 | throw new RuntimeException( |
61 | "Can't load resource bundle due to underlying exception " |
62 | + t.toString()); |
63 | } |
64 | } finally { |
65 | RESOURCE_BUNDLE = temp; |
66 | } |
67 | } |
68 | |
69 | /** |
70 | * Returns the localized message for the given message key |
71 | * |
72 | * @param key |
73 | * the message key |
74 | * @return The localized message for the key |
75 | */ |
76 | public static String getString(String key) { |
77 | if (RESOURCE_BUNDLE == null) { |
78 | throw new RuntimeException( |
79 | "Localized messages from resource bundle '" + BUNDLE_NAME |
80 | + "' not loaded during initialization of driver."); |
81 | } |
82 | |
83 | try { |
84 | if (key == null) { |
85 | throw new IllegalArgumentException( |
86 | "Message key can not be null"); |
87 | } |
88 | |
89 | String message = RESOURCE_BUNDLE.getString(key); |
90 | |
91 | if (message == null) { |
92 | message = "Missing error message for key '" + key + "'"; |
93 | } |
94 | |
95 | return message; |
96 | } catch (MissingResourceException e) { |
97 | return '!' + key + '!'; |
98 | } |
99 | } |
100 | |
101 | public static String getString(String key, Object[] args) { |
102 | return MessageFormat.format(getString(key), args); |
103 | } |
104 | |
105 | /** |
106 | * Dis-allow construction ... |
107 | */ |
108 | private Messages() { |
109 | |
110 | // XXX Auto-generated constructor stub |
111 | } |
112 | } |