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Messages.java
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Sat, Jun 1, 03:53

Messages.java
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/*
Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved.
The MySQL Connector/J is licensed under the terms of the GPLv2
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors.
There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
this software, see the FOSS License Exception
<http://www.mysql.com/about/legal/licensing/foss-exception.html>.
This program is free software; you can redistribute it and/or modify it under the terms
of the GNU General Public License as published by the Free Software Foundation; version 2
of the License.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this
program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
Floor, Boston, MA 02110-1301 USA
*/
package com.mysql.jdbc;
import java.text.MessageFormat;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
/**
* Support for localized messages.
*/
public class Messages {
private static final String BUNDLE_NAME = "com.mysql.jdbc.LocalizedErrorMessages";
private static final ResourceBundle RESOURCE_BUNDLE;
static {
ResourceBundle temp = null;
//
// Overly-pedantic here, some appserver and JVM combos don't deal well with the no-args version, others don't deal well with the three-arg version, so
// we need to try both :(
//
try {
temp = ResourceBundle.getBundle(BUNDLE_NAME, Locale.getDefault(), Messages.class.getClassLoader());
} catch (Throwable t) {
try {
temp = ResourceBundle.getBundle(BUNDLE_NAME);
} catch (Throwable t2) {
RuntimeException rt = new RuntimeException("Can't load resource bundle due to underlying exception " + t.toString());
rt.initCause(t2);
throw rt;
}
} finally {
RESOURCE_BUNDLE = temp;
}
}
/**
* Returns the localized message for the given message key
*
* @param key
* the message key
* @return The localized message for the key
*/
public static String getString(String key) {
if (RESOURCE_BUNDLE == null) {
throw new RuntimeException("Localized messages from resource bundle '" + BUNDLE_NAME + "' not loaded during initialization of driver.");
}
try {
if (key == null) {
throw new IllegalArgumentException("Message key can not be null");
}
String message = RESOURCE_BUNDLE.getString(key);
if (message == null) {
message = "Missing error message for key '" + key + "'";
}
return message;
} catch (MissingResourceException e) {
return '!' + key + '!';
}
}
public static String getString(String key, Object[] args) {
return MessageFormat.format(getString(key), args);
}
/**
* Dis-allow construction ...
*/
private Messages() {
}
}

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