/* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.util; import java.security.AccessController;import java.security.PrivilegedActionException;import java.security.PrivilegedExceptionAction;import java.util.ArrayList;import java.util.HashSet;import java.util.IllformedLocaleException;import java.util.LinkedHashSet;import java.util.List;import java.util.Locale;import java.util.Locale.Builder;import java.util.Map;import java.util.ResourceBundle.Control;import java.util.ServiceLoader;import java.util.Set;import java.util.concurrent.ConcurrentHashMap;import java.util.spi.LocaleServiceProvider; import sun.util.logging.PlatformLogger;import sun.util.resources.LocaleData;import sun.util.resources.OpenListResourceBundle; /** * An instance of this class holds a set of the third party implementations of a particular * locale sensitive service, such as {@link java.util.spi.LocaleNameProvider}. * */public final class LocaleServiceProviderPool {     /**     * A Map that holds singleton instances of this class.  Each instance holds a     * set of provider implementations of a particular locale sensitive service.     */    private static Map<Class, LocaleServiceProviderPool> poolOfPools =        new ConcurrentHashMap<Class, LocaleServiceProviderPool>();     /**     * A Set containing locale service providers that implement the     * specified provider SPI     */    private Set<LocaleServiceProvider> providers =        new LinkedHashSet<LocaleServiceProvider>();     /**     * A Map that retains Locale->provider mapping     */    private Map<Locale, LocaleServiceProvider> providersCache =        new ConcurrentHashMap<Locale, LocaleServiceProvider>();     /**     * Available locales for this locale sensitive service.  This also contains     * JRE's available locales     */    private Set<Locale> availableLocales = null;     /**     * Available locales within this JRE.  Currently this is declared as     * static.  This could be non-static later, so that they could have     * different sets for each locale sensitive services.     */    private static volatile List<Locale> availableJRELocales = null;     /**     * Provider locales for this locale sensitive service.     */    private Set<Locale> providerLocales = null;     /**     * Special locale for ja_JP with Japanese calendar     */    private static Locale locale_ja_JP_JP = new Locale("ja", "JP", "JP");     /**     * Special locale for th_TH with Thai numbering system     */    private static Locale locale_th_TH_TH = new Locale("th", "TH", "TH");     /**     * A factory method that returns a singleton instance     */    public static LocaleServiceProviderPool getPool(Class<? extends LocaleServiceProvider> providerClass) {        LocaleServiceProviderPool pool = poolOfPools.get(providerClass);        if (pool == null) {            LocaleServiceProviderPool newPool =                new LocaleServiceProviderPool(providerClass);            pool = poolOfPools.put(providerClass, newPool);            if (pool == null) {                pool = newPool;            }        }         return pool;    }     /**     * The sole constructor.     *     * @param c class of the locale sensitive service     */    private LocaleServiceProviderPool (final Class<? extends LocaleServiceProvider> c) {        try {            AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() {                public Object run() {                    for (LocaleServiceProvider provider : ServiceLoader.loadInstalled(c)) {                        providers.add(provider);                    }                    return null;                }            });        }  catch (PrivilegedActionException e) {            config(e.toString());        }    }     private static void config(String message) {        PlatformLogger logger = PlatformLogger.getLogger("sun.util.LocaleServiceProviderPool");        logger.config(message);    }     /**     * Lazy loaded set of available locales.     * Loading all locales is a very long operation.     */    private static class AllAvailableLocales {        /**         * Available locales for all locale sensitive services.         * This also contains JRE's available locales         */        static final Locale[] allAvailableLocales;         static {            Class[] providerClasses = {                java.text.spi.BreakIteratorProvider.class,                java.text.spi.CollatorProvider.class,                java.text.spi.DateFormatProvider.class,                java.text.spi.DateFormatSymbolsProvider.class,                java.text.spi.DecimalFormatSymbolsProvider.class,                java.text.spi.NumberFormatProvider.class,                java.util.spi.CurrencyNameProvider.class,                java.util.spi.LocaleNameProvider.class,                java.util.spi.TimeZoneNameProvider.class };             // Normalize locales for look up            Locale[] allLocales = LocaleData.getAvailableLocales();            Set<Locale> all = new HashSet<Locale>(allLocales.length);            for (Locale locale : allLocales) {                all.add(getLookupLocale(locale));            }             for (Class providerClass : providerClasses) {                LocaleServiceProviderPool pool =                    LocaleServiceProviderPool.getPool(providerClass);                all.addAll(pool.getProviderLocales());            }             allAvailableLocales = all.toArray(new Locale[0]);        }    }     /**     * Returns an array of available locales for all the provider classes.     * This array is a merged array of all the locales that are provided by each     * provider, including the JRE.     *     * @return an array of the available locales for all provider classes     */    public static Locale[] getAllAvailableLocales() {        return AllAvailableLocales.allAvailableLocales.clone();    }     /**     * Returns an array of available locales.  This array is a     * merged array of all the locales that are provided by each     * provider, including the JRE.     *     * @return an array of the available locales     */    public synchronized Locale[] getAvailableLocales() {        if (availableLocales == null) {            availableLocales = new HashSet<Locale>(getJRELocales());            if (hasProviders()) {                availableLocales.addAll(getProviderLocales());            }        }        Locale[] tmp = new Locale[availableLocales.size()];        availableLocales.toArray(tmp);        return tmp;    }     /**     * Returns an array of available locales (already normalized     * for service lookup) from providers.     * Note that this method does not return a defensive copy.     *     * @return list of the provider locales     */    private synchronized Set<Locale> getProviderLocales() {        if (providerLocales == null) {            providerLocales = new HashSet<Locale>();            if (hasProviders()) {                for (LocaleServiceProvider lsp : providers) {                    Locale[] locales = lsp.getAvailableLocales();                    for (Locale locale: locales) {                        providerLocales.add(getLookupLocale(locale));                    }                }            }        }        return providerLocales;    }     /**     * Returns whether any provider for this locale sensitive     * service is available or not.     *     * @return true if any provider is available     */    public boolean hasProviders() {        return !providers.isEmpty();    }     /**     * Returns an array of available locales (already normalized for     * service lookup) supported by the JRE.     * Note that this method does not return a defensive copy.     *     * @return list of the available JRE locales     */    private List<Locale> getJRELocales() {        if (availableJRELocales == null) {            synchronized (LocaleServiceProviderPool.class) {                if (availableJRELocales == null) {                    Locale[] allLocales = LocaleData.getAvailableLocales();                    availableJRELocales = new ArrayList<Locale>(allLocales.length);                    for (Locale locale : allLocales) {                        availableJRELocales.add(getLookupLocale(locale));                    }                }            }        }        return availableJRELocales;    }     /**     * Returns whether the given locale is supported by the JRE.     *     * @param locale the locale to test.     * @return true, if the locale is supported by the JRE. false     *     otherwise.     */    private boolean isJRESupported(Locale locale) {        List<Locale> locales = getJRELocales();        return locales.contains(getLookupLocale(locale));    }     /**     * Returns the provider's localized object for the specified     * locale.     *     * @param getter an object on which getObject() method     *     is called to obtain the provider's instance.     * @param locale the given locale that is used as the starting one     * @param params provider specific parameters     * @return provider's instance, or null.     */    public <P, S> S getLocalizedObject(LocalizedObjectGetter<P, S> getter,                                     Locale locale,                                     Object... params) {        return getLocalizedObjectImpl(getter, locale, true, null, null, null, params);    }     /**     * Returns the provider's localized name for the specified     * locale.     *     * @param getter an object on which getObject() method     *     is called to obtain the provider's instance.     * @param locale the given locale that is used as the starting one     * @param bundle JRE resource bundle that contains     *     the localized names, or null for localized objects.     * @param key the key string if bundle is supplied, otherwise null.     * @param params provider specific parameters     * @return provider's instance, or null.     */    public <P, S> S getLocalizedObject(LocalizedObjectGetter<P, S> getter,                                     Locale locale,                                     OpenListResourceBundle bundle,                                     String key,                                     Object... params) {        return getLocalizedObjectImpl(getter, locale, false, null, bundle, key, params);    }     /**     * Returns the provider's localized name for the specified     * locale.     *     * @param getter an object on which getObject() method     *     is called to obtain the provider's instance.     * @param locale the given locale that is used as the starting one     * @param bundleKey JRE specific bundle key. e.g., "USD" is for currency           symbol and "usd" is for currency display name in the JRE bundle.     * @param bundle JRE resource bundle that contains     *     the localized names, or null for localized objects.     * @param key the key string if bundle is supplied, otherwise null.     * @param params provider specific parameters     * @return provider's instance, or null.     */    public <P, S> S getLocalizedObject(LocalizedObjectGetter<P, S> getter,                                     Locale locale,                                     String bundleKey,                                     OpenListResourceBundle bundle,                                     String key,                                     Object... params) {        return getLocalizedObjectImpl(getter, locale, false, bundleKey, bundle, key, params);    }     private <P, S> S getLocalizedObjectImpl(LocalizedObjectGetter<P, S> getter,                                     Locale locale,                                     boolean isObjectProvider,                                     String bundleKey,                                     OpenListResourceBundle bundle,                                     String key,                                     Object... params) {        if (hasProviders()) {            if (bundleKey == null) {                bundleKey = key;            }            Locale bundleLocale = (bundle != null ? bundle.getLocale() : null);            List<Locale> lookupLocales = getLookupLocales(locale);            P lsp;            S providersObj = null;             // check whether a provider has an implementation that's closer            // to the requested locale than the bundle we've found (for            // localized names), or Java runtime's supported locale            // (for localized objects)            Set<Locale> provLoc = getProviderLocales();            for (int i = 0; i < lookupLocales.size(); i++) {                Locale current = lookupLocales.get(i);                if (bundleLocale != null) {                    if (current.equals(bundleLocale)) {                        break;                    }                } else {                    if (isJRESupported(current)) {                        break;                    }                }                if (provLoc.contains(current)) {                    lsp = (P)findProvider(current);                    if (lsp != null) {                        providersObj = getter.getObject(lsp, locale, key, params);                        if (providersObj != null) {                            return providersObj;                        } else if (isObjectProvider) {                            config(                                "A locale sensitive service provider returned null for a localized objects,  which should not happen.  provider: " + lsp + " locale: " + locale);                        }                    }                }            }             // look up the JRE bundle and its parent chain.  Only            // providers for localized names are checked hereafter.            while (bundle != null) {                bundleLocale = bundle.getLocale();                 if (bundle.handleGetKeys().contains(bundleKey)) {                    // JRE has it.                    return null;                } else {                    lsp = (P)findProvider(bundleLocale);                    if (lsp != null) {                        providersObj = getter.getObject(lsp, locale, key, params);                        if (providersObj != null) {                            return providersObj;                        }                    }                }                 // try parent bundle                bundle = bundle.getParent();            }        }         // not found.        return null;    }     /**     * Returns a locale service provider instance that supports     * the specified locale.     *     * @param locale the given locale     * @return the provider, or null if there is     *     no provider available.     */    private LocaleServiceProvider findProvider(Locale locale) {        if (!hasProviders()) {            return null;        }         if (providersCache.containsKey(locale)) {            LocaleServiceProvider provider = providersCache.get(locale);            if (provider != NullProvider.INSTANCE) {                return provider;            }        } else {            for (LocaleServiceProvider lsp : providers) {                Locale[] locales = lsp.getAvailableLocales();                for (Locale available: locales) {                    // normalize                    available = getLookupLocale(available);                    if (locale.equals(available)) {                        LocaleServiceProvider providerInCache =                            providersCache.put(locale, lsp);                        return (providerInCache != null ?                                providerInCache :                                lsp);                    }                }            }            providersCache.put(locale, NullProvider.INSTANCE);        }        return null;    }     /**     * Returns a list of candidate locales for service look up.     * @param locale the input locale     * @return the list of candiate locales for the given locale     */    private static List<Locale> getLookupLocales(Locale locale) {        // Note: We currently use the default implementation of        // ResourceBundle.Control.getCandidateLocales. The result        // returned by getCandidateLocales are already normalized        // (no extensions) for service look up.        List<Locale> lookupLocales = new Control(){}.getCandidateLocales("", locale);        return lookupLocales;    }     /**     * Returns an instance of Locale used for service look up.     * The result Locale has no extensions except for ja_JP_JP     * and th_TH_TH     *     * @param locale the locale     * @return the locale used for service look up     */    private static Locale getLookupLocale(Locale locale) {        Locale lookupLocale = locale;        Set<Character> extensions = locale.getExtensionKeys();        if (!extensions.isEmpty()                && !locale.equals(locale_ja_JP_JP)                && !locale.equals(locale_th_TH_TH)) {            // remove extensions            Builder locbld = new Builder();            try {                locbld.setLocale(locale);                locbld.clearExtensions();                lookupLocale = locbld.build();            } catch (IllformedLocaleException e) {                // A Locale with non-empty extensions                // should have well-formed fields except                // for ja_JP_JP and th_TH_TH. Therefore,                // it should never enter in this catch clause.                config("A locale(" + locale + ") has non-empty extensions, but has illformed fields.");                 // Fallback - script field will be lost.                lookupLocale = new Locale(locale.getLanguage(), locale.getCountry(), locale.getVariant());            }        }        return lookupLocale;    }

Lines 1–500 of 534. Load more