/**
* Gets the Collator for the desired locale.
*
* @param desiredLocale the desired locale.
* @return the Collator for the desired locale.
* @see java.util.Locale
* @see java.util.ResourceBundle
*/
public static synchronized Collator getInstance(Locale desiredLocale) {
Collator result = (Collator) cache.get(desiredLocale);
if (result != null) {
return (Collator) result.clone(); // make the world safe
}
// Check whether a provider can provide an implementation that's closer
// to the requested locale than what the Java runtime itself can provide.
LocaleServiceProviderPool pool = LocaleServiceProviderPool.getPool(CollatorProvider.class);
if (pool.hasProviders()) {
Collator providersInstance =
pool.getLocalizedObject(CollatorGetter.INSTANCE, desiredLocale, desiredLocale);
if (providersInstance != null) {
return providersInstance;
}
}
// Load the resource of the desired locale from resource
// manager.
String colString = "";
try {
ResourceBundle resource = LocaleData.getCollationData(desiredLocale);
colString = resource.getString("Rule");
} catch (MissingResourceException e) {
// Use default values
}
try {
result =
new RuleBasedCollator(CollationRules.DEFAULTRULES + colString, CANONICAL_DECOMPOSITION);
} catch (ParseException foo) {
// predefined tables should contain correct grammar
try {
result = new RuleBasedCollator(CollationRules.DEFAULTRULES);
} catch (ParseException bar) {
// do nothing
}
}
// Now that RuleBasedCollator adds expansions for pre-composed characters
// into their decomposed equivalents, the default collators don't need
// to have decomposition turned on. Laura, 5/5/98, bug 4114077
result.setDecomposition(NO_DECOMPOSITION);
cache.put(desiredLocale, result);
return (Collator) result.clone();
}
/**
* Returns an array of all locales for which the <code>getInstance</code> methods of this class
* can return localized instances. The returned array represents the union of locales supported by
* the Java runtime and by installed {@link java.text.spi.CollatorProvider CollatorProvider}
* implementations. It must contain at least a Locale instance equal to {@link java.util.Locale#US
* Locale.US}.
*
* @return An array of locales for which localized <code>Collator</code> instances are available.
*/
public static synchronized Locale[] getAvailableLocales() {
LocaleServiceProviderPool pool = LocaleServiceProviderPool.getPool(CollatorProvider.class);
return pool.getAvailableLocales();
}