author | redestad |
Tue, 03 May 2016 15:50:54 +0200 | |
changeset 37781 | 71ed5645f17c |
parent 37593 | 824750ada3d6 |
child 37782 | ad8fe7507ecc |
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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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.security.action.GetPropertyAction; |
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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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||
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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; |
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111 |
|
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/** |
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* Adapter lookup cache. |
114 |
*/ |
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private static ConcurrentMap<Class<? extends LocaleServiceProvider>, ConcurrentMap<Locale, LocaleProviderAdapter>> |
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adapterCache = new ConcurrentHashMap<>(); |
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||
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static { |
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String order = GetPropertyAction.privilegedGetProperty("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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type = type.trim().toUpperCase(Locale.ROOT); |
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if (type.equals("COMPAT")) { |
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type = "JRE"; |
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} |
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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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} |
13583 | 142 |
|
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143 |
defaultLocaleProviderAdapter = Type.CLDR; |
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144 |
if (!typeList.isEmpty()) { |
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// bona fide preference exists |
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146 |
if (!typeList.contains(Type.CLDR)) { |
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// Append FALLBACK as the last resort. |
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148 |
typeList.add(Type.FALLBACK); |
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149 |
defaultLocaleProviderAdapter = Type.FALLBACK; |
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150 |
} |
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151 |
} else { |
31263 | 152 |
// Default preference list. |
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153 |
typeList.add(Type.CLDR); |
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154 |
typeList.add(Type.JRE); |
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155 |
} |
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156 |
adapterPreference = Collections.unmodifiableList(typeList); |
13583 | 157 |
} |
158 |
||
159 |
/** |
|
160 |
* Returns the singleton instance for each adapter type |
|
161 |
*/ |
|
162 |
public static LocaleProviderAdapter forType(Type type) { |
|
163 |
switch (type) { |
|
164 |
case JRE: |
|
165 |
case CLDR: |
|
166 |
case SPI: |
|
167 |
case HOST: |
|
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168 |
case FALLBACK: |
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169 |
LocaleProviderAdapter adapter = null; |
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170 |
LocaleProviderAdapter cached = adapterInstances.get(type); |
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|
171 |
if (cached == null) { |
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|
172 |
try { |
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173 |
// lazily load adapters here |
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|
174 |
adapter = (LocaleProviderAdapter)Class.forName(type.getAdapterClassName()) |
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175 |
.newInstance(); |
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|
176 |
cached = adapterInstances.putIfAbsent(type, adapter); |
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|
177 |
if (cached != null) { |
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|
178 |
adapter = cached; |
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|
179 |
} |
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|
180 |
} catch (ClassNotFoundException | |
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181 |
IllegalAccessException | |
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|
182 |
InstantiationException | |
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|
183 |
UnsupportedOperationException e) { |
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|
184 |
LocaleServiceProviderPool.config(LocaleProviderAdapter.class, e.toString()); |
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185 |
adapterInstances.putIfAbsent(type, NONEXISTENT_ADAPTER); |
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|
186 |
if (defaultLocaleProviderAdapter == type) { |
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187 |
defaultLocaleProviderAdapter = Type.FALLBACK; |
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|
188 |
} |
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|
189 |
} |
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190 |
} else if (cached != NONEXISTENT_ADAPTER) { |
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|
191 |
adapter = cached; |
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|
192 |
} |
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|
193 |
return adapter; |
13583 | 194 |
default: |
195 |
throw new InternalError("unknown locale data adapter type"); |
|
196 |
} |
|
197 |
} |
|
198 |
||
199 |
public static LocaleProviderAdapter forJRE() { |
|
33309
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|
200 |
return forType(Type.JRE); |
13583 | 201 |
} |
202 |
||
203 |
public static LocaleProviderAdapter getResourceBundleBased() { |
|
204 |
for (Type type : getAdapterPreference()) { |
|
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if (type == Type.JRE || type == Type.CLDR || type == Type.FALLBACK) { |
31263 | 206 |
LocaleProviderAdapter adapter = forType(type); |
207 |
if (adapter != null) { |
|
208 |
return adapter; |
|
209 |
} |
|
13583 | 210 |
} |
211 |
} |
|
212 |
// Shouldn't happen. |
|
213 |
throw new InternalError(); |
|
214 |
} |
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|
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/** |
217 |
* Returns the preference order of LocaleProviderAdapter.Type |
|
218 |
*/ |
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public static List<Type> getAdapterPreference() { |
13583 | 220 |
return adapterPreference; |
221 |
} |
|
222 |
||
223 |
/** |
|
224 |
* Returns a LocaleProviderAdapter for the given locale service provider that |
|
225 |
* best matches the given locale. This method returns the LocaleProviderAdapter |
|
226 |
* for JRE if none is found for the given locale. |
|
227 |
* |
|
228 |
* @param providerClass the class for the locale service provider |
|
229 |
* @param locale the desired locale. |
|
230 |
* @return a LocaleProviderAdapter |
|
231 |
*/ |
|
232 |
public static LocaleProviderAdapter getAdapter(Class<? extends LocaleServiceProvider> providerClass, |
|
233 |
Locale locale) { |
|
15260 | 234 |
LocaleProviderAdapter adapter; |
235 |
||
236 |
// cache lookup |
|
237 |
ConcurrentMap<Locale, LocaleProviderAdapter> adapterMap = adapterCache.get(providerClass); |
|
238 |
if (adapterMap != null) { |
|
239 |
if ((adapter = adapterMap.get(locale)) != null) { |
|
240 |
return adapter; |
|
241 |
} |
|
242 |
} else { |
|
243 |
adapterMap = new ConcurrentHashMap<>(); |
|
244 |
adapterCache.putIfAbsent(providerClass, adapterMap); |
|
245 |
} |
|
246 |
||
13583 | 247 |
// Fast look-up for the given locale |
15260 | 248 |
adapter = findAdapter(providerClass, locale); |
13583 | 249 |
if (adapter != null) { |
15260 | 250 |
adapterMap.putIfAbsent(locale, adapter); |
13583 | 251 |
return adapter; |
252 |
} |
|
253 |
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254 |
// Try finding an adapter in the normal candidate locales path of the given locale. |
|
255 |
List<Locale> lookupLocales = ResourceBundle.Control.getControl(ResourceBundle.Control.FORMAT_DEFAULT) |
|
256 |
.getCandidateLocales("", locale); |
|
257 |
for (Locale loc : lookupLocales) { |
|
258 |
if (loc.equals(locale)) { |
|
259 |
// We've already done with this loc. |
|
260 |
continue; |
|
261 |
} |
|
262 |
adapter = findAdapter(providerClass, loc); |
|
263 |
if (adapter != null) { |
|
15260 | 264 |
adapterMap.putIfAbsent(locale, adapter); |
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return adapter; |
266 |
} |
|
267 |
} |
|
268 |
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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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} |
273 |
||
274 |
private static LocaleProviderAdapter findAdapter(Class<? extends LocaleServiceProvider> providerClass, |
|
275 |
Locale locale) { |
|
276 |
for (Type type : getAdapterPreference()) { |
|
277 |
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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} |
285 |
} |
|
286 |
} |
|
287 |
return null; |
|
288 |
} |
|
289 |
||
290 |
/** |
|
291 |
* A utility method for implementing the default LocaleServiceProvider.isSupportedLocale |
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* for the JRE, CLDR, and FALLBACK adapters. |
13583 | 293 |
*/ |
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public boolean isSupportedProviderLocale(Locale locale, Set<String> langtags) { |
295 |
LocaleProviderAdapter.Type type = getAdapterType(); |
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assert type == Type.JRE || type == Type.CLDR || type == Type.FALLBACK; |
13583 | 297 |
return false; |
298 |
} |
|
299 |
||
300 |
public static Locale[] toLocaleArray(Set<String> tags) { |
|
301 |
Locale[] locs = new Locale[tags.size() + 1]; |
|
302 |
int index = 0; |
|
303 |
locs[index++] = Locale.ROOT; |
|
304 |
for (String tag : tags) { |
|
305 |
switch (tag) { |
|
306 |
case "ja-JP-JP": |
|
307 |
locs[index++] = JRELocaleConstants.JA_JP_JP; |
|
308 |
break; |
|
309 |
case "th-TH-TH": |
|
310 |
locs[index++] = JRELocaleConstants.TH_TH_TH; |
|
311 |
break; |
|
312 |
default: |
|
313 |
locs[index++] = Locale.forLanguageTag(tag); |
|
314 |
break; |
|
315 |
} |
|
316 |
} |
|
317 |
return locs; |
|
318 |
} |
|
319 |
||
320 |
/** |
|
321 |
* Returns the type of this LocaleProviderAdapter |
|
322 |
*/ |
|
323 |
public abstract LocaleProviderAdapter.Type getAdapterType(); |
|
324 |
||
325 |
/** |
|
326 |
* Getter method for Locale Service Providers. |
|
327 |
*/ |
|
328 |
public abstract <P extends LocaleServiceProvider> P getLocaleServiceProvider(Class<P> c); |
|
329 |
||
330 |
/** |
|
331 |
* Returns a BreakIteratorProvider for this LocaleProviderAdapter, or null if no |
|
332 |
* BreakIteratorProvider is available. |
|
333 |
* |
|
334 |
* @return a BreakIteratorProvider |
|
335 |
*/ |
|
336 |
public abstract BreakIteratorProvider getBreakIteratorProvider(); |
|
337 |
||
338 |
/** |
|
339 |
* Returns a ollatorProvider for this LocaleProviderAdapter, or null if no |
|
340 |
* ollatorProvider is available. |
|
341 |
* |
|
342 |
* @return a ollatorProvider |
|
343 |
*/ |
|
344 |
public abstract CollatorProvider getCollatorProvider(); |
|
345 |
||
346 |
/** |
|
347 |
* Returns a DateFormatProvider for this LocaleProviderAdapter, or null if no |
|
348 |
* DateFormatProvider is available. |
|
349 |
* |
|
350 |
* @return a DateFormatProvider |
|
351 |
*/ |
|
352 |
public abstract DateFormatProvider getDateFormatProvider(); |
|
353 |
||
354 |
/** |
|
355 |
* Returns a DateFormatSymbolsProvider for this LocaleProviderAdapter, or null if no |
|
356 |
* DateFormatSymbolsProvider is available. |
|
357 |
* |
|
358 |
* @return a DateFormatSymbolsProvider |
|
359 |
*/ |
|
360 |
public abstract DateFormatSymbolsProvider getDateFormatSymbolsProvider(); |
|
361 |
||
362 |
/** |
|
363 |
* Returns a DecimalFormatSymbolsProvider for this LocaleProviderAdapter, or null if no |
|
364 |
* DecimalFormatSymbolsProvider is available. |
|
365 |
* |
|
366 |
* @return a DecimalFormatSymbolsProvider |
|
367 |
*/ |
|
368 |
public abstract DecimalFormatSymbolsProvider getDecimalFormatSymbolsProvider(); |
|
369 |
||
370 |
/** |
|
371 |
* Returns a NumberFormatProvider for this LocaleProviderAdapter, or null if no |
|
372 |
* NumberFormatProvider is available. |
|
373 |
* |
|
374 |
* @return a NumberFormatProvider |
|
375 |
*/ |
|
376 |
public abstract NumberFormatProvider getNumberFormatProvider(); |
|
377 |
||
378 |
/* |
|
379 |
* Getter methods for java.util.spi.* providers |
|
380 |
*/ |
|
381 |
||
382 |
/** |
|
383 |
* Returns a CurrencyNameProvider for this LocaleProviderAdapter, or null if no |
|
384 |
* CurrencyNameProvider is available. |
|
385 |
* |
|
386 |
* @return a CurrencyNameProvider |
|
387 |
*/ |
|
388 |
public abstract CurrencyNameProvider getCurrencyNameProvider(); |
|
389 |
||
390 |
/** |
|
391 |
* Returns a LocaleNameProvider for this LocaleProviderAdapter, or null if no |
|
392 |
* LocaleNameProvider is available. |
|
393 |
* |
|
394 |
* @return a LocaleNameProvider |
|
395 |
*/ |
|
396 |
public abstract LocaleNameProvider getLocaleNameProvider(); |
|
397 |
||
398 |
/** |
|
399 |
* Returns a TimeZoneNameProvider for this LocaleProviderAdapter, or null if no |
|
400 |
* TimeZoneNameProvider is available. |
|
401 |
* |
|
402 |
* @return a TimeZoneNameProvider |
|
403 |
*/ |
|
404 |
public abstract TimeZoneNameProvider getTimeZoneNameProvider(); |
|
405 |
||
406 |
/** |
|
407 |
* Returns a CalendarDataProvider for this LocaleProviderAdapter, or null if no |
|
408 |
* CalendarDataProvider is available. |
|
409 |
* |
|
410 |
* @return a CalendarDataProvider |
|
411 |
*/ |
|
412 |
public abstract CalendarDataProvider getCalendarDataProvider(); |
|
413 |
||
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|
414 |
/** |
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|
415 |
* Returns a CalendarNameProvider for this LocaleProviderAdapter, or null if no |
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|
416 |
* CalendarNameProvider is available. |
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|
417 |
* |
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|
418 |
* @return a CalendarNameProvider |
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|
419 |
*/ |
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|
420 |
public abstract CalendarNameProvider getCalendarNameProvider(); |
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|
421 |
|
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|
422 |
/** |
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|
423 |
* Returns a CalendarProvider for this LocaleProviderAdapter, or null if no |
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|
424 |
* CalendarProvider is available. |
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|
425 |
* |
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|
426 |
* @return a CalendarProvider |
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|
427 |
*/ |
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|
428 |
public abstract CalendarProvider getCalendarProvider(); |
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|
429 |
|
13583 | 430 |
public abstract LocaleResources getLocaleResources(Locale locale); |
431 |
||
432 |
public abstract Locale[] getAvailableLocales(); |
|
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|
433 |
|
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|
434 |
private static final LocaleProviderAdapter NONEXISTENT_ADAPTER = new NonExistentAdapter(); |
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|
435 |
private static final class NonExistentAdapter extends FallbackLocaleProviderAdapter { |
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|
436 |
@Override |
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|
437 |
public LocaleProviderAdapter.Type getAdapterType() { |
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|
438 |
return null; |
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|
439 |
} |
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|
440 |
|
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|
441 |
private NonExistentAdapter() {}; |
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|
442 |
} |
13583 | 443 |
} |