author | naoto |
Thu, 22 Oct 2015 21:44:39 -0700 | |
changeset 33310 | 2701a9854bb5 |
parent 33309 | 3aecb54196d9 |
child 33494 | 3429cce32839 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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||
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package sun.util.locale.provider; |
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||
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import java.security.AccessController; |
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import java.text.spi.BreakIteratorProvider; |
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import java.text.spi.CollatorProvider; |
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import java.text.spi.DateFormatProvider; |
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import java.text.spi.DateFormatSymbolsProvider; |
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import java.text.spi.DecimalFormatSymbolsProvider; |
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import java.text.spi.NumberFormatProvider; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.List; |
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import java.util.Locale; |
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import java.util.Map; |
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import java.util.ResourceBundle; |
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import java.util.Set; |
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import java.util.concurrent.ConcurrentHashMap; |
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import java.util.concurrent.ConcurrentMap; |
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import java.util.spi.CalendarDataProvider; |
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import java.util.spi.CalendarNameProvider; |
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import java.util.spi.CurrencyNameProvider; |
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import java.util.spi.LocaleNameProvider; |
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import java.util.spi.LocaleServiceProvider; |
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import java.util.spi.TimeZoneNameProvider; |
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import sun.util.spi.CalendarProvider; |
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/** |
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* The LocaleProviderAdapter abstract class. |
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* |
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* @author Naoto Sato |
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* @author Masayoshi Okutsu |
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*/ |
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public abstract class LocaleProviderAdapter { |
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/** |
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* Adapter type. |
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*/ |
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public static enum Type { |
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JRE("sun.util.locale.provider.JRELocaleProviderAdapter", "sun.util.resources", "sun.text.resources"), |
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CLDR("sun.util.cldr.CLDRLocaleProviderAdapter", "sun.util.resources.cldr", "sun.text.resources.cldr"), |
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SPI("sun.util.locale.provider.SPILocaleProviderAdapter"), |
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HOST("sun.util.locale.provider.HostLocaleProviderAdapter"), |
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FALLBACK("sun.util.locale.provider.FallbackLocaleProviderAdapter", "sun.util.resources", "sun.text.resources"); |
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private final String CLASSNAME; |
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private final String UTIL_RESOURCES_PACKAGE; |
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private final String TEXT_RESOURCES_PACKAGE; |
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private Type(String className) { |
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this(className, null, null); |
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} |
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private Type(String className, String util, String text) { |
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CLASSNAME = className; |
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UTIL_RESOURCES_PACKAGE = util; |
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TEXT_RESOURCES_PACKAGE = text; |
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} |
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||
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public String getAdapterClassName() { |
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return CLASSNAME; |
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} |
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public String getUtilResourcesPackage() { |
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return UTIL_RESOURCES_PACKAGE; |
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} |
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public String getTextResourcesPackage() { |
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return TEXT_RESOURCES_PACKAGE; |
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} |
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} |
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||
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/** |
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* LocaleProviderAdapter preference list. |
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*/ |
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private static final List<Type> adapterPreference; |
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/** |
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* LocaleProviderAdapter instances |
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*/ |
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private static final Map<Type, LocaleProviderAdapter> adapterInstances = new ConcurrentHashMap<>(); |
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/** |
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* Default fallback adapter type, which should return something meaningful in any case. |
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* This is either CLDR or FALLBACK. |
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*/ |
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static volatile LocaleProviderAdapter.Type defaultLocaleProviderAdapter = null; |
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/** |
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* Adapter lookup cache. |
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*/ |
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private static ConcurrentMap<Class<? extends LocaleServiceProvider>, ConcurrentMap<Locale, LocaleProviderAdapter>> |
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adapterCache = new ConcurrentHashMap<>(); |
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||
13583 | 118 |
static { |
119 |
String order = AccessController.doPrivileged( |
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new sun.security.action.GetPropertyAction("java.locale.providers")); |
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List<Type> typeList = new ArrayList<>(); |
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|
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// Check user specified adapter preference |
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if (order != null && order.length() != 0) { |
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String[] types = order.split(","); |
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for (String type : types) { |
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try { |
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Type aType = Type.valueOf(type.trim().toUpperCase(Locale.ROOT)); |
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if (!typeList.contains(aType)) { |
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typeList.add(aType); |
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} |
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} catch (IllegalArgumentException | UnsupportedOperationException e) { |
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// could be caused by the user specifying wrong |
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// provider name or format in the system property |
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LocaleServiceProviderPool.config(LocaleProviderAdapter.class, e.toString()); |
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} |
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} |
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} |
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defaultLocaleProviderAdapter = Type.CLDR; |
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if (!typeList.isEmpty()) { |
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// bona fide preference exists |
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if (!typeList.contains(Type.CLDR)) { |
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// Append FALLBACK as the last resort. |
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typeList.add(Type.FALLBACK); |
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defaultLocaleProviderAdapter = Type.FALLBACK; |
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147 |
} |
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148 |
} else { |
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// Default preference list. |
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150 |
typeList.add(Type.CLDR); |
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typeList.add(Type.JRE); |
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152 |
} |
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153 |
adapterPreference = Collections.unmodifiableList(typeList); |
13583 | 154 |
} |
155 |
||
156 |
/** |
|
157 |
* Returns the singleton instance for each adapter type |
|
158 |
*/ |
|
159 |
public static LocaleProviderAdapter forType(Type type) { |
|
160 |
switch (type) { |
|
161 |
case JRE: |
|
162 |
case CLDR: |
|
163 |
case SPI: |
|
164 |
case HOST: |
|
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case FALLBACK: |
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LocaleProviderAdapter adapter = null; |
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LocaleProviderAdapter cached = adapterInstances.get(type); |
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168 |
if (cached == null) { |
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169 |
try { |
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170 |
// lazily load adapters here |
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171 |
adapter = (LocaleProviderAdapter)Class.forName(type.getAdapterClassName()) |
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.newInstance(); |
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173 |
cached = adapterInstances.putIfAbsent(type, adapter); |
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174 |
if (cached != null) { |
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175 |
adapter = cached; |
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176 |
} |
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177 |
} catch (ClassNotFoundException | |
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178 |
IllegalAccessException | |
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179 |
InstantiationException | |
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180 |
UnsupportedOperationException e) { |
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181 |
LocaleServiceProviderPool.config(LocaleProviderAdapter.class, e.toString()); |
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182 |
adapterInstances.putIfAbsent(type, NONEXISTENT_ADAPTER); |
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|
183 |
if (defaultLocaleProviderAdapter == type) { |
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184 |
defaultLocaleProviderAdapter = Type.FALLBACK; |
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185 |
} |
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186 |
} |
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187 |
} else if (cached != NONEXISTENT_ADAPTER) { |
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188 |
adapter = cached; |
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189 |
} |
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|
190 |
return adapter; |
13583 | 191 |
default: |
192 |
throw new InternalError("unknown locale data adapter type"); |
|
193 |
} |
|
194 |
} |
|
195 |
||
196 |
public static LocaleProviderAdapter forJRE() { |
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197 |
return forType(Type.JRE); |
13583 | 198 |
} |
199 |
||
200 |
public static LocaleProviderAdapter getResourceBundleBased() { |
|
201 |
for (Type type : getAdapterPreference()) { |
|
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202 |
if (type == Type.JRE || type == Type.CLDR || type == Type.FALLBACK) { |
31263 | 203 |
LocaleProviderAdapter adapter = forType(type); |
204 |
if (adapter != null) { |
|
205 |
return adapter; |
|
206 |
} |
|
13583 | 207 |
} |
208 |
} |
|
209 |
// Shouldn't happen. |
|
210 |
throw new InternalError(); |
|
211 |
} |
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212 |
|
13583 | 213 |
/** |
214 |
* Returns the preference order of LocaleProviderAdapter.Type |
|
215 |
*/ |
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216 |
public static List<Type> getAdapterPreference() { |
13583 | 217 |
return adapterPreference; |
218 |
} |
|
219 |
||
220 |
/** |
|
221 |
* Returns a LocaleProviderAdapter for the given locale service provider that |
|
222 |
* best matches the given locale. This method returns the LocaleProviderAdapter |
|
223 |
* for JRE if none is found for the given locale. |
|
224 |
* |
|
225 |
* @param providerClass the class for the locale service provider |
|
226 |
* @param locale the desired locale. |
|
227 |
* @return a LocaleProviderAdapter |
|
228 |
*/ |
|
229 |
public static LocaleProviderAdapter getAdapter(Class<? extends LocaleServiceProvider> providerClass, |
|
230 |
Locale locale) { |
|
15260 | 231 |
LocaleProviderAdapter adapter; |
232 |
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233 |
// cache lookup |
|
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ConcurrentMap<Locale, LocaleProviderAdapter> adapterMap = adapterCache.get(providerClass); |
|
235 |
if (adapterMap != null) { |
|
236 |
if ((adapter = adapterMap.get(locale)) != null) { |
|
237 |
return adapter; |
|
238 |
} |
|
239 |
} else { |
|
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adapterMap = new ConcurrentHashMap<>(); |
|
241 |
adapterCache.putIfAbsent(providerClass, adapterMap); |
|
242 |
} |
|
243 |
||
13583 | 244 |
// Fast look-up for the given locale |
15260 | 245 |
adapter = findAdapter(providerClass, locale); |
13583 | 246 |
if (adapter != null) { |
15260 | 247 |
adapterMap.putIfAbsent(locale, adapter); |
13583 | 248 |
return adapter; |
249 |
} |
|
250 |
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251 |
// Try finding an adapter in the normal candidate locales path of the given locale. |
|
252 |
List<Locale> lookupLocales = ResourceBundle.Control.getControl(ResourceBundle.Control.FORMAT_DEFAULT) |
|
253 |
.getCandidateLocales("", locale); |
|
254 |
for (Locale loc : lookupLocales) { |
|
255 |
if (loc.equals(locale)) { |
|
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// We've already done with this loc. |
|
257 |
continue; |
|
258 |
} |
|
259 |
adapter = findAdapter(providerClass, loc); |
|
260 |
if (adapter != null) { |
|
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adapterMap.putIfAbsent(locale, adapter); |
13583 | 262 |
return adapter; |
263 |
} |
|
264 |
} |
|
265 |
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// returns the adapter for FALLBACK as the last resort |
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adapterMap.putIfAbsent(locale, forType(Type.FALLBACK)); |
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return forType(Type.FALLBACK); |
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} |
270 |
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271 |
private static LocaleProviderAdapter findAdapter(Class<? extends LocaleServiceProvider> providerClass, |
|
272 |
Locale locale) { |
|
273 |
for (Type type : getAdapterPreference()) { |
|
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LocaleProviderAdapter adapter = forType(type); |
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if (adapter != null) { |
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LocaleServiceProvider provider = adapter.getLocaleServiceProvider(providerClass); |
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if (provider != null) { |
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if (provider.isSupportedLocale(locale)) { |
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return adapter; |
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} |
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} |
282 |
} |
|
283 |
} |
|
284 |
return null; |
|
285 |
} |
|
286 |
||
287 |
/** |
|
288 |
* A utility method for implementing the default LocaleServiceProvider.isSupportedLocale |
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* for the JRE, CLDR, and FALLBACK adapters. |
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*/ |
31263 | 291 |
public boolean isSupportedProviderLocale(Locale locale, Set<String> langtags) { |
292 |
LocaleProviderAdapter.Type type = getAdapterType(); |
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assert type == Type.JRE || type == Type.CLDR || type == Type.FALLBACK; |
13583 | 294 |
return false; |
295 |
} |
|
296 |
||
297 |
public static Locale[] toLocaleArray(Set<String> tags) { |
|
298 |
Locale[] locs = new Locale[tags.size() + 1]; |
|
299 |
int index = 0; |
|
300 |
locs[index++] = Locale.ROOT; |
|
301 |
for (String tag : tags) { |
|
302 |
switch (tag) { |
|
303 |
case "ja-JP-JP": |
|
304 |
locs[index++] = JRELocaleConstants.JA_JP_JP; |
|
305 |
break; |
|
306 |
case "th-TH-TH": |
|
307 |
locs[index++] = JRELocaleConstants.TH_TH_TH; |
|
308 |
break; |
|
309 |
default: |
|
310 |
locs[index++] = Locale.forLanguageTag(tag); |
|
311 |
break; |
|
312 |
} |
|
313 |
} |
|
314 |
return locs; |
|
315 |
} |
|
316 |
||
317 |
/** |
|
318 |
* Returns the type of this LocaleProviderAdapter |
|
319 |
*/ |
|
320 |
public abstract LocaleProviderAdapter.Type getAdapterType(); |
|
321 |
||
322 |
/** |
|
323 |
* Getter method for Locale Service Providers. |
|
324 |
*/ |
|
325 |
public abstract <P extends LocaleServiceProvider> P getLocaleServiceProvider(Class<P> c); |
|
326 |
||
327 |
/** |
|
328 |
* Returns a BreakIteratorProvider for this LocaleProviderAdapter, or null if no |
|
329 |
* BreakIteratorProvider is available. |
|
330 |
* |
|
331 |
* @return a BreakIteratorProvider |
|
332 |
*/ |
|
333 |
public abstract BreakIteratorProvider getBreakIteratorProvider(); |
|
334 |
||
335 |
/** |
|
336 |
* Returns a ollatorProvider for this LocaleProviderAdapter, or null if no |
|
337 |
* ollatorProvider is available. |
|
338 |
* |
|
339 |
* @return a ollatorProvider |
|
340 |
*/ |
|
341 |
public abstract CollatorProvider getCollatorProvider(); |
|
342 |
||
343 |
/** |
|
344 |
* Returns a DateFormatProvider for this LocaleProviderAdapter, or null if no |
|
345 |
* DateFormatProvider is available. |
|
346 |
* |
|
347 |
* @return a DateFormatProvider |
|
348 |
*/ |
|
349 |
public abstract DateFormatProvider getDateFormatProvider(); |
|
350 |
||
351 |
/** |
|
352 |
* Returns a DateFormatSymbolsProvider for this LocaleProviderAdapter, or null if no |
|
353 |
* DateFormatSymbolsProvider is available. |
|
354 |
* |
|
355 |
* @return a DateFormatSymbolsProvider |
|
356 |
*/ |
|
357 |
public abstract DateFormatSymbolsProvider getDateFormatSymbolsProvider(); |
|
358 |
||
359 |
/** |
|
360 |
* Returns a DecimalFormatSymbolsProvider for this LocaleProviderAdapter, or null if no |
|
361 |
* DecimalFormatSymbolsProvider is available. |
|
362 |
* |
|
363 |
* @return a DecimalFormatSymbolsProvider |
|
364 |
*/ |
|
365 |
public abstract DecimalFormatSymbolsProvider getDecimalFormatSymbolsProvider(); |
|
366 |
||
367 |
/** |
|
368 |
* Returns a NumberFormatProvider for this LocaleProviderAdapter, or null if no |
|
369 |
* NumberFormatProvider is available. |
|
370 |
* |
|
371 |
* @return a NumberFormatProvider |
|
372 |
*/ |
|
373 |
public abstract NumberFormatProvider getNumberFormatProvider(); |
|
374 |
||
375 |
/* |
|
376 |
* Getter methods for java.util.spi.* providers |
|
377 |
*/ |
|
378 |
||
379 |
/** |
|
380 |
* Returns a CurrencyNameProvider for this LocaleProviderAdapter, or null if no |
|
381 |
* CurrencyNameProvider is available. |
|
382 |
* |
|
383 |
* @return a CurrencyNameProvider |
|
384 |
*/ |
|
385 |
public abstract CurrencyNameProvider getCurrencyNameProvider(); |
|
386 |
||
387 |
/** |
|
388 |
* Returns a LocaleNameProvider for this LocaleProviderAdapter, or null if no |
|
389 |
* LocaleNameProvider is available. |
|
390 |
* |
|
391 |
* @return a LocaleNameProvider |
|
392 |
*/ |
|
393 |
public abstract LocaleNameProvider getLocaleNameProvider(); |
|
394 |
||
395 |
/** |
|
396 |
* Returns a TimeZoneNameProvider for this LocaleProviderAdapter, or null if no |
|
397 |
* TimeZoneNameProvider is available. |
|
398 |
* |
|
399 |
* @return a TimeZoneNameProvider |
|
400 |
*/ |
|
401 |
public abstract TimeZoneNameProvider getTimeZoneNameProvider(); |
|
402 |
||
403 |
/** |
|
404 |
* Returns a CalendarDataProvider for this LocaleProviderAdapter, or null if no |
|
405 |
* CalendarDataProvider is available. |
|
406 |
* |
|
407 |
* @return a CalendarDataProvider |
|
408 |
*/ |
|
409 |
public abstract CalendarDataProvider getCalendarDataProvider(); |
|
410 |
||
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|
411 |
/** |
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|
412 |
* Returns a CalendarNameProvider for this LocaleProviderAdapter, or null if no |
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413 |
* CalendarNameProvider is available. |
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|
414 |
* |
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|
415 |
* @return a CalendarNameProvider |
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|
416 |
*/ |
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|
417 |
public abstract CalendarNameProvider getCalendarNameProvider(); |
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|
418 |
|
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|
419 |
/** |
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|
420 |
* Returns a CalendarProvider for this LocaleProviderAdapter, or null if no |
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|
421 |
* CalendarProvider is available. |
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|
422 |
* |
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|
423 |
* @return a CalendarProvider |
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|
424 |
*/ |
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|
425 |
public abstract CalendarProvider getCalendarProvider(); |
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|
426 |
|
13583 | 427 |
public abstract LocaleResources getLocaleResources(Locale locale); |
428 |
||
429 |
public abstract Locale[] getAvailableLocales(); |
|
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|
430 |
|
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|
431 |
private static final LocaleProviderAdapter NONEXISTENT_ADAPTER = new NonExistentAdapter(); |
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|
432 |
private static final class NonExistentAdapter extends FallbackLocaleProviderAdapter { |
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|
433 |
@Override |
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|
434 |
public LocaleProviderAdapter.Type getAdapterType() { |
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|
435 |
return null; |
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|
436 |
} |
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|
437 |
|
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|
438 |
private NonExistentAdapter() {}; |
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|
439 |
} |
13583 | 440 |
} |