| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.openejb.util; |
| |
| import java.text.MessageFormat; |
| import java.util.Arrays; |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.MissingResourceException; |
| import java.util.ResourceBundle; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| public class Messages { |
| static private Map<String, ResourceBundle> _rbBundles = new ConcurrentHashMap<String, ResourceBundle>(); |
| static private Map<String, Map<String, MessageFormat>> _rbFormats = new ConcurrentHashMap<String, Map<String, MessageFormat>>(); |
| static private Locale _globalLocale; |
| |
| private ResourceBundle _messages; |
| private Map<String, MessageFormat> _formats; |
| private Locale _locale; |
| private String _resourceName; |
| |
| public Messages(Class clazz) { |
| this(packageName(clazz)); |
| } |
| |
| private static String packageName(Class clazz) { |
| String name = clazz.getName(); |
| return name.substring(0, name.lastIndexOf(".")); |
| } |
| |
| public Messages(String resourceName) { |
| _resourceName = resourceName + ".Messages"; |
| synchronized (Messages.class) { |
| _locale = _globalLocale; |
| } |
| } |
| |
| protected void init() { |
| if (_formats != null && _messages != null) { |
| return; |
| } |
| |
| final ResourceBundle rb = _rbBundles.get(_resourceName); |
| if (rb == null) { |
| try { |
| if (_locale == null) { |
| _messages = ResourceBundle.getBundle(_resourceName); |
| } else { |
| _messages = ResourceBundle.getBundle(_resourceName, _locale); |
| } |
| } catch (Exception except) { |
| _messages = new EmptyResourceBundle(); |
| } |
| |
| _formats = new ConcurrentHashMap<String, MessageFormat>(); |
| |
| _rbBundles.put(_resourceName, _messages); |
| _rbFormats.put(_resourceName, _formats); |
| } else { |
| _messages = rb; |
| _formats = _rbFormats.get(_resourceName); |
| } |
| } |
| |
| public String format(String message) { |
| return message(message); |
| } |
| |
| public String format(String message, Object... args) { |
| init(); |
| if (_locale != _globalLocale) { |
| synchronized (Messages.class) { |
| init(); |
| } |
| } |
| |
| MessageFormat mf; |
| String msg; |
| |
| try { |
| mf = (MessageFormat) _formats.get(message); |
| if (mf == null) { |
| try { |
| msg = _messages.getString(message); |
| } catch (MissingResourceException except) { |
| return message + (args != null ? " " + Arrays.toString(args) : ""); |
| } |
| mf = new MessageFormat(msg); |
| _formats.put(message, mf); |
| } |
| return mf.format(args); |
| } catch (Exception except) { |
| return "An internal error occured while processing message " + message; |
| } |
| } |
| |
| public String message(String message) { |
| init(); |
| if (_locale != _globalLocale) { |
| synchronized (Messages.class) { |
| init(); |
| } |
| } |
| |
| try { |
| return _messages.getString(message); |
| } catch (MissingResourceException except) { |
| return message; |
| } |
| } |
| |
| static public void setLocale(Locale locale) { |
| synchronized (Messages.class) { |
| _globalLocale = locale; |
| _rbBundles = new Hashtable(); |
| _rbFormats = new Hashtable(); |
| } |
| } |
| |
| static { |
| setLocale(Locale.getDefault()); |
| } |
| |
| private static final class EmptyResourceBundle extends ResourceBundle implements Enumeration { |
| |
| public Enumeration getKeys() { |
| return this; |
| } |
| |
| protected Object handleGetObject(String name) { |
| return "[Missing message " + name + "]"; |
| } |
| |
| public boolean hasMoreElements() { |
| return false; |
| } |
| |
| public Object nextElement() { |
| return null; |
| } |
| |
| } |
| |
| } |