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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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
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package sun.util.locale.provider;

import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.text.BreakIterator;
import java.text.Collator;
import java.text.DateFormat;
import java.text.DateFormatSymbols;
import java.text.DecimalFormatSymbols;
import java.text.NumberFormat;
import java.text.spi.BreakIteratorProvider;
import java.text.spi.CollatorProvider;
import java.text.spi.DateFormatProvider;
import java.text.spi.DateFormatSymbolsProvider;
import java.text.spi.DecimalFormatSymbolsProvider;
import java.text.spi.NumberFormatProvider;
import java.util.Locale;
import java.util.Map;
import java.util.ServiceLoader;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.spi.CalendarDataProvider;
import java.util.spi.CalendarNameProvider;
import java.util.spi.CurrencyNameProvider;
import java.util.spi.LocaleNameProvider;
import java.util.spi.LocaleServiceProvider;
import java.util.spi.TimeZoneNameProvider;

LocaleProviderAdapter implementation for the installed SPI implementations.
Author:Naoto Sato, Masayoshi Okutsu
/** * LocaleProviderAdapter implementation for the installed SPI implementations. * * @author Naoto Sato * @author Masayoshi Okutsu */
public class SPILocaleProviderAdapter extends AuxLocaleProviderAdapter {
Returns the type of this LocaleProviderAdapter
/** * Returns the type of this LocaleProviderAdapter */
@Override public LocaleProviderAdapter.Type getAdapterType() { return LocaleProviderAdapter.Type.SPI; } @Override protected <P extends LocaleServiceProvider> P findInstalledProvider(final Class<P> c) { try { return AccessController.doPrivileged(new PrivilegedExceptionAction<P>() { @Override @SuppressWarnings("unchecked") public P run() { P delegate = null; for (LocaleServiceProvider provider : ServiceLoader.loadInstalled(c)) { if (delegate == null) { try { delegate = (P) Class.forName(SPILocaleProviderAdapter.class.getCanonicalName() + "$" + c.getSimpleName() + "Delegate") .newInstance(); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException e) { LocaleServiceProviderPool.config(SPILocaleProviderAdapter.class, e.toString()); return null; } } ((Delegate)delegate).addImpl(provider); } return delegate; } }); } catch (PrivilegedActionException e) { LocaleServiceProviderPool.config(SPILocaleProviderAdapter.class, e.toString()); } return null; } /* * Delegate interface. All the implementations have to have the class name * following "<provider class name>Delegate" convention. */ interface Delegate<P extends LocaleServiceProvider> { public void addImpl(P impl); public P getImpl(Locale locale); } /* * Obtain the real SPI implementation, using locale fallback */ private static <P extends LocaleServiceProvider> P getImpl(Map<Locale, P> map, Locale locale) { for (Locale l : LocaleServiceProviderPool.getLookupLocales(locale)) { P ret = map.get(l); if (ret != null) { return ret; } } return null; } /* * Delegates for the actual SPI implementations. */ static class BreakIteratorProviderDelegate extends BreakIteratorProvider implements Delegate<BreakIteratorProvider> { private ConcurrentMap<Locale, BreakIteratorProvider> map = new ConcurrentHashMap<>(); @Override public void addImpl(BreakIteratorProvider impl) { for (Locale l : impl.getAvailableLocales()) { map.putIfAbsent(l, impl); } } @Override public BreakIteratorProvider getImpl(Locale locale) { return SPILocaleProviderAdapter.getImpl(map, locale); } @Override public Locale[] getAvailableLocales() { return map.keySet().toArray(new Locale[0]); } @Override public boolean isSupportedLocale(Locale locale) { return map.containsKey(locale); } @Override public BreakIterator getWordInstance(Locale locale) { BreakIteratorProvider bip = getImpl(locale); assert bip != null; return bip.getWordInstance(locale); } @Override public BreakIterator getLineInstance(Locale locale) { BreakIteratorProvider bip = getImpl(locale); assert bip != null; return bip.getLineInstance(locale); } @Override public BreakIterator getCharacterInstance(Locale locale) { BreakIteratorProvider bip = getImpl(locale); assert bip != null; return bip.getCharacterInstance(locale); } @Override public BreakIterator getSentenceInstance(Locale locale) { BreakIteratorProvider bip = getImpl(locale); assert bip != null; return bip.getSentenceInstance(locale); } } static class CollatorProviderDelegate extends CollatorProvider implements Delegate<CollatorProvider> { private ConcurrentMap<Locale, CollatorProvider> map = new ConcurrentHashMap<>(); @Override public void addImpl(CollatorProvider impl) { for (Locale l : impl.getAvailableLocales()) { map.putIfAbsent(l, impl); } } @Override public CollatorProvider getImpl(Locale locale) { return SPILocaleProviderAdapter.getImpl(map, locale); } @Override public Locale[] getAvailableLocales() { return map.keySet().toArray(new Locale[0]); } @Override public boolean isSupportedLocale(Locale locale) { return map.containsKey(locale); } @Override public Collator getInstance(Locale locale) { CollatorProvider cp = getImpl(locale); assert cp != null; return cp.getInstance(locale); } } static class DateFormatProviderDelegate extends DateFormatProvider implements Delegate<DateFormatProvider> { private ConcurrentMap<Locale, DateFormatProvider> map = new ConcurrentHashMap<>(); @Override public void addImpl(DateFormatProvider impl) { for (Locale l : impl.getAvailableLocales()) { map.putIfAbsent(l, impl); } } @Override public DateFormatProvider getImpl(Locale locale) { return SPILocaleProviderAdapter.getImpl(map, locale); } @Override public Locale[] getAvailableLocales() { return map.keySet().toArray(new Locale[0]); } @Override public boolean isSupportedLocale(Locale locale) { return map.containsKey(locale); } @Override public DateFormat getTimeInstance(int style, Locale locale) { DateFormatProvider dfp = getImpl(locale); assert dfp != null; return dfp.getTimeInstance(style, locale); } @Override public DateFormat getDateInstance(int style, Locale locale) { DateFormatProvider dfp = getImpl(locale); assert dfp != null; return dfp.getDateInstance(style, locale); } @Override public DateFormat getDateTimeInstance(int dateStyle, int timeStyle, Locale locale) { DateFormatProvider dfp = getImpl(locale); assert dfp != null; return dfp.getDateTimeInstance(dateStyle, timeStyle, locale); } } static class DateFormatSymbolsProviderDelegate extends DateFormatSymbolsProvider implements Delegate<DateFormatSymbolsProvider> { private ConcurrentMap<Locale, DateFormatSymbolsProvider> map = new ConcurrentHashMap<>(); @Override public void addImpl(DateFormatSymbolsProvider impl) { for (Locale l : impl.getAvailableLocales()) { map.putIfAbsent(l, impl); } } @Override public DateFormatSymbolsProvider getImpl(Locale locale) { return SPILocaleProviderAdapter.getImpl(map, locale); } @Override public Locale[] getAvailableLocales() { return map.keySet().toArray(new Locale[0]); } @Override public boolean isSupportedLocale(Locale locale) { return map.containsKey(locale); } @Override public DateFormatSymbols getInstance(Locale locale) { DateFormatSymbolsProvider dfsp = getImpl(locale); assert dfsp != null; return dfsp.getInstance(locale); } } static class DecimalFormatSymbolsProviderDelegate extends DecimalFormatSymbolsProvider implements Delegate<DecimalFormatSymbolsProvider> { private ConcurrentMap<Locale, DecimalFormatSymbolsProvider> map = new ConcurrentHashMap<>(); @Override public void addImpl(DecimalFormatSymbolsProvider impl) { for (Locale l : impl.getAvailableLocales()) { map.putIfAbsent(l, impl); } } @Override public DecimalFormatSymbolsProvider getImpl(Locale locale) { return SPILocaleProviderAdapter.getImpl(map, locale); } @Override public Locale[] getAvailableLocales() { return map.keySet().toArray(new Locale[0]); } @Override public boolean isSupportedLocale(Locale locale) { return map.containsKey(locale); } @Override public DecimalFormatSymbols getInstance(Locale locale) { DecimalFormatSymbolsProvider dfsp = getImpl(locale); assert dfsp != null; return dfsp.getInstance(locale); } } static class NumberFormatProviderDelegate extends NumberFormatProvider implements Delegate<NumberFormatProvider> { private ConcurrentMap<Locale, NumberFormatProvider> map = new ConcurrentHashMap<>(); @Override public void addImpl(NumberFormatProvider impl) { for (Locale l : impl.getAvailableLocales()) { map.putIfAbsent(l, impl); } } @Override public NumberFormatProvider getImpl(Locale locale) { return SPILocaleProviderAdapter.getImpl(map, locale); } @Override public Locale[] getAvailableLocales() { return map.keySet().toArray(new Locale[0]); } @Override public boolean isSupportedLocale(Locale locale) { return map.containsKey(locale); } @Override public NumberFormat getCurrencyInstance(Locale locale) { NumberFormatProvider nfp = getImpl(locale); assert nfp != null; return nfp.getCurrencyInstance(locale); } @Override public NumberFormat getIntegerInstance(Locale locale) { NumberFormatProvider nfp = getImpl(locale); assert nfp != null; return nfp.getIntegerInstance(locale); } @Override public NumberFormat getNumberInstance(Locale locale) { NumberFormatProvider nfp = getImpl(locale); assert nfp != null; return nfp.getNumberInstance(locale); } @Override public NumberFormat getPercentInstance(Locale locale) { NumberFormatProvider nfp = getImpl(locale); assert nfp != null; return nfp.getPercentInstance(locale); } } static class CalendarDataProviderDelegate extends CalendarDataProvider implements Delegate<CalendarDataProvider> { private ConcurrentMap<Locale, CalendarDataProvider> map = new ConcurrentHashMap<>(); @Override public void addImpl(CalendarDataProvider impl) { for (Locale l : impl.getAvailableLocales()) { map.putIfAbsent(l, impl); } } @Override public CalendarDataProvider getImpl(Locale locale) { return SPILocaleProviderAdapter.getImpl(map, locale); } @Override public Locale[] getAvailableLocales() { return map.keySet().toArray(new Locale[0]); } @Override public boolean isSupportedLocale(Locale locale) { return map.containsKey(locale); } @Override public int getFirstDayOfWeek(Locale locale) { CalendarDataProvider cdp = getImpl(locale); assert cdp != null; return cdp.getFirstDayOfWeek(locale); } @Override public int getMinimalDaysInFirstWeek(Locale locale) { CalendarDataProvider cdp = getImpl(locale); assert cdp != null; return cdp.getMinimalDaysInFirstWeek(locale); } } static class CalendarNameProviderDelegate extends CalendarNameProvider implements Delegate<CalendarNameProvider> { private ConcurrentMap<Locale, CalendarNameProvider> map = new ConcurrentHashMap<>(); @Override public void addImpl(CalendarNameProvider impl) { for (Locale l : impl.getAvailableLocales()) { map.putIfAbsent(l, impl); } } @Override public CalendarNameProvider getImpl(Locale locale) { return SPILocaleProviderAdapter.getImpl(map, locale); } @Override public Locale[] getAvailableLocales() { return map.keySet().toArray(new Locale[0]); } @Override public boolean isSupportedLocale(Locale locale) { return map.containsKey(locale); } @Override public String getDisplayName(String calendarType, int field, int value, int style, Locale locale) { CalendarNameProvider cdp = getImpl(locale); assert cdp != null; return cdp.getDisplayName(calendarType, field, value, style, locale); } @Override public Map<String, Integer> getDisplayNames(String calendarType, int field, int style, Locale locale) { CalendarNameProvider cdp = getImpl(locale); assert cdp != null; return cdp.getDisplayNames(calendarType, field, style, locale); } } static class CurrencyNameProviderDelegate extends CurrencyNameProvider implements Delegate<CurrencyNameProvider> { private ConcurrentMap<Locale, CurrencyNameProvider> map = new ConcurrentHashMap<>(); @Override public void addImpl(CurrencyNameProvider impl) { for (Locale l : impl.getAvailableLocales()) { map.putIfAbsent(l, impl); } } @Override public CurrencyNameProvider getImpl(Locale locale) { return SPILocaleProviderAdapter.getImpl(map, locale); } @Override public Locale[] getAvailableLocales() { return map.keySet().toArray(new Locale[0]); } @Override public boolean isSupportedLocale(Locale locale) { return map.containsKey(locale); } @Override public String getSymbol(String currencyCode, Locale locale) { CurrencyNameProvider cnp = getImpl(locale); assert cnp != null; return cnp.getSymbol(currencyCode, locale); } @Override public String getDisplayName(String currencyCode, Locale locale) { CurrencyNameProvider cnp = getImpl(locale); assert cnp != null; return cnp.getDisplayName(currencyCode, locale); } } static class LocaleNameProviderDelegate extends LocaleNameProvider implements Delegate<LocaleNameProvider> { private ConcurrentMap<Locale, LocaleNameProvider> map = new ConcurrentHashMap<>(); @Override public void addImpl(LocaleNameProvider impl) { for (Locale l : impl.getAvailableLocales()) { map.putIfAbsent(l, impl); } } @Override public LocaleNameProvider getImpl(Locale locale) { return SPILocaleProviderAdapter.getImpl(map, locale); } @Override public Locale[] getAvailableLocales() { return map.keySet().toArray(new Locale[0]); } @Override public boolean isSupportedLocale(Locale locale) { return map.containsKey(locale); } @Override public String getDisplayLanguage(String languageCode, Locale locale) { LocaleNameProvider lnp = getImpl(locale); assert lnp != null; return lnp.getDisplayLanguage(languageCode, locale); } @Override public String getDisplayScript(String scriptCode, Locale locale) { LocaleNameProvider lnp = getImpl(locale); assert lnp != null; return lnp.getDisplayScript(scriptCode, locale); } @Override public String getDisplayCountry(String countryCode, Locale locale) { LocaleNameProvider lnp = getImpl(locale); assert lnp != null; return lnp.getDisplayCountry(countryCode, locale); } @Override public String getDisplayVariant(String variant, Locale locale) { LocaleNameProvider lnp = getImpl(locale); assert lnp != null; return lnp.getDisplayVariant(variant, locale); } } static class TimeZoneNameProviderDelegate extends TimeZoneNameProvider implements Delegate<TimeZoneNameProvider> { private ConcurrentMap<Locale, TimeZoneNameProvider> map = new ConcurrentHashMap<>(); @Override public void addImpl(TimeZoneNameProvider impl) { for (Locale l : impl.getAvailableLocales()) { map.putIfAbsent(l, impl); } } @Override public TimeZoneNameProvider getImpl(Locale locale) { return SPILocaleProviderAdapter.getImpl(map, locale); } @Override public Locale[] getAvailableLocales() { return map.keySet().toArray(new Locale[0]); } @Override public boolean isSupportedLocale(Locale locale) { return map.containsKey(locale); } @Override public String getDisplayName(String ID, boolean daylight, int style, Locale locale) { TimeZoneNameProvider tznp = getImpl(locale); assert tznp != null; return tznp.getDisplayName(ID, daylight, style, locale); } @Override public String getGenericDisplayName(String ID, int style, Locale locale) { TimeZoneNameProvider tznp = getImpl(locale); assert tznp != null; return tznp.getGenericDisplayName(ID, style, locale); } } }