Logo Search packages:      
Sourcecode: mysql-connector-java version File versions  Download package

Messages.java

/*
 Copyright (c) 2002, 2010, 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 FLOSS 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.
 * 
 * @author Mark Matthews
 * @version $Id$
 */
00039 public class Messages {

      private static final String BUNDLE_NAME = "com.mysql.jdbc.LocalizedErrorMessages"; //$NON-NLS-1$

      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
       */
00080       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 ...
       */
00112       private Messages() {

            // XXX Auto-generated constructor stub
      }
}

Generated by  Doxygen 1.6.0   Back to index