Java tutorial
/* * ==================================================================== * This file is part of the ebXML Registry by Icar Cnr v3.2 * ("eRICv32" in the following disclaimer). * * "eRICv32" 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, either version 3 of the License, or * (at your option) any later version. * * "eRICv32" 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 Version 3 * along with "eRICv32". If not, see <http://www.gnu.org/licenses/>. * * eRICv32 is a forked, derivative work, based on: * - freebXML Registry, a royalty-free, open source implementation of the ebXML Registry standard, * which was published under the "freebxml License, Version 1.1"; * - ebXML OMAR v3.2 Edition, published under the GNU GPL v3 by S. Krushe & P. Arwanitis. * * All derivative software changes and additions are made under * * Copyright (C) 2013 Ing. Antonio Messina <messina@pa.icar.cnr.it> * * This software consists of voluntary contributions made by many * individuals on behalf of the freebxml Software Foundation. For more * information on the freebxml Software Foundation, please see * "http://www.freebxml.org/". * * This product includes software developed by the Apache Software * Foundation (http://www.apache.org/). * * ==================================================================== */ package it.cnr.icar.eric.common; import java.text.MessageFormat; import java.util.Enumeration; import java.util.Locale; import java.util.ResourceBundle; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; /** * This class contains methods common to all XXResourceBundle classes * * @author Paul Sterk / Sun Microsystems */ public abstract class AbstractResourceBundle extends ResourceBundle { private static final Log log = LogFactory.getLog(AbstractResourceBundle.class); public static final String LOCALE = "urn:oasis:names:tc:ebxml-regrep:rs:request:locale"; /** * Gets 'key' from ResourceBundle and format mesage using 'args'. * * @param key String key for message. * @param args Array of arguments for message. * @return String formatted message. */ public String getString(String key, Object args[]) { String pattern = getBundle().getString(key); return MessageFormat.format(pattern, args); } /** * Gets 'key' from ResourceBundle and format mesage using 'args'. * * @param key String key for message. * @param args Array of arguments for message. * @param locale Locale in which to perform key lookup. * @return String formatted message. */ public String getString(String key, Object args[], Locale locale) { String pattern = null; if (locale == null) { pattern = getBundle().getString(key); } else { pattern = getBundle(locale).getString(key); } return MessageFormat.format(pattern, args); } /** * Parse a locale string, return corresponding Locale instance. * * @param localeString * Name for the locale of interest. If null, use VM default locale. * @return New Locale instance. */ public static Locale parseLocale(String localeString) { Locale locale = null; if (localeString == null) { log.trace(CommonResourceBundle.getInstance() .getString("message.TheLocaleStringIsNullUsingDefaultLocale")); locale = Locale.getDefault(); } else { try { String[] args = localeString.split("_"); if (args.length == 1) { locale = new Locale(args[0]); } else if (args.length == 2) { locale = new Locale(args[0], args[1]); } else if (args.length == 3) { locale = new Locale(args[0], args[1], args[2]); } } catch (Throwable t) { log.error(CommonResourceBundle.getInstance() .getString("message.CouldNotCreateLocaleFromEriccommonlocaleProperty"), t); log.error(CommonResourceBundle.getInstance().getString("message.UsingDefaultLocaleInstead", new Object[] { Locale.getDefault().toString() })); locale = Locale.getDefault(); } } return locale; } /** * Subclasses of this class must implement this method so that the * correct resource bundle is passed to methods in this class * * @return * A java.util.ResourceBundle from the subsclass. Methods in this class * will use this reference. */ public abstract ResourceBundle getBundle(); /** * Subclasses of this class must implement this method so that the * correct resource bundle is passed to methods in this class * * @param locale * The locale to use when getting the resource bundle * @return * A java.util.ResourceBundle from the subsclass. Methods in this class * will use this reference. */ public abstract ResourceBundle getBundle(Locale locale); /** * Since we are changing the ResourceBundle extension point, must * implement handleGetObject() using delegate getBundle(). Uses * getObject() call to work around protected access to * ResourceBundle.handleGetObject(). Happily, this means parent tree * of delegate bundle is searched for a match. * * Implements java.util.ResourceBundle.handleGetObject; inherits that * javadoc information. * * @see java.util.ResourceBundle.handleGetObject */ protected Object handleGetObject(String key) { return getBundle().getObject(key); } /** * Since we are changing the ResourceBundle extension point, must * implement getKeys() using delegate getBundle(). * * Implements java.util.ResourceBundle.getKeys; inherits that javadoc * information. * * @see java.util.ResourceBundle.getKeys */ public final Enumeration<String> getKeys() { return getBundle().getKeys(); } }