sun.util.locale.provider.LocaleProviderAdapter Java Examples

static void adapterTest(String expected, String lang, String ctry) {
    Locale testLocale = new Locale(lang, ctry);
    LocaleProviderAdapter ldaExpected =
        LocaleProviderAdapter.forType(LocaleProviderAdapter.Type.valueOf(expected));
    if (!ldaExpected.getDateFormatProvider().isSupportedLocale(testLocale)) {
        System.out.println("test locale: "+testLocale+" is not supported by the expected provider: "+ldaExpected+". Ignoring the test.");
        return;
    }
    String preference = System.getProperty("java.locale.providers", "");
    LocaleProviderAdapter lda = LocaleProviderAdapter.getAdapter(DateFormatProvider.class, testLocale);
    LocaleProviderAdapter.Type type = lda.getAdapterType();
    System.out.printf("testLocale: %s, got: %s, expected: %s\n", testLocale, type, expected);
    if (!type.toString().equals(expected)) {
        throw new RuntimeException("Returned locale data adapter is not correct.");
    }
}
 

/**
 * Creates a DateFormat with the given time and/or date style in the given
 * locale.
 * @param timeStyle a value from 0 to 3 indicating the time format,
 * ignored if flags is 2
 * @param dateStyle a value from 0 to 3 indicating the time format,
 * ignored if flags is 1
 * @param flags either 1 for a time format, 2 for a date format,
 * or 3 for a date/time format
 * @param loc the locale for the format
 */
private static DateFormat get(int timeStyle, int dateStyle,
                              int flags, Locale loc) {
    if ((flags & 1) != 0) {
        if (timeStyle < 0 || timeStyle > 3) {
            throw new IllegalArgumentException("Illegal time style " + timeStyle);
        }
    } else {
        timeStyle = -1;
    }
    if ((flags & 2) != 0) {
        if (dateStyle < 0 || dateStyle > 3) {
            throw new IllegalArgumentException("Illegal date style " + dateStyle);
        }
    } else {
        dateStyle = -1;
    }

    LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(DateFormatProvider.class, loc);
    DateFormat dateFormat = get(adapter, timeStyle, dateStyle, loc);
    if (dateFormat == null) {
        dateFormat = get(LocaleProviderAdapter.forJRE(), timeStyle, dateStyle, loc);
    }
    return dateFormat;
}
 

private static BreakIterator createBreakInstance(LocaleProviderAdapter adapter, Locale locale, int type) {
    BreakIteratorProvider breakIteratorProvider = adapter.getBreakIteratorProvider();
    BreakIterator iterator = null;
    switch (type) {
    case CHARACTER_INDEX:
        iterator = breakIteratorProvider.getCharacterInstance(locale);
        break;
    case WORD_INDEX:
        iterator = breakIteratorProvider.getWordInstance(locale);
        break;
    case LINE_INDEX:
        iterator = breakIteratorProvider.getLineInstance(locale);
        break;
    case SENTENCE_INDEX:
        iterator = breakIteratorProvider.getSentenceInstance(locale);
        break;
    }
    return iterator;
}
 

private static BreakIterator createBreakInstance(LocaleProviderAdapter adapter, Locale locale, int type) {
    BreakIteratorProvider breakIteratorProvider = adapter.getBreakIteratorProvider();
    BreakIterator iterator = null;
    switch (type) {
    case CHARACTER_INDEX:
        iterator = breakIteratorProvider.getCharacterInstance(locale);
        break;
    case WORD_INDEX:
        iterator = breakIteratorProvider.getWordInstance(locale);
        break;
    case LINE_INDEX:
        iterator = breakIteratorProvider.getLineInstance(locale);
        break;
    case SENTENCE_INDEX:
        iterator = breakIteratorProvider.getSentenceInstance(locale);
        break;
    }
    return iterator;
}
 

@Override
 public List<Locale> getCandidateLocales(String baseName, Locale locale) {
    List<Locale> candidates = super.getCandidateLocales(baseName, locale);
    // Weed out Locales which are known to have no resource bundles
    int lastDot = baseName.lastIndexOf('.');
    String category = (lastDot >= 0) ? baseName.substring(lastDot + 1) : baseName;
    LocaleProviderAdapter.Type type = baseName.contains(DOTCLDR) ? CLDR : JRE;
    LocaleProviderAdapter adapter = LocaleProviderAdapter.forType(type);
    Set<String> langtags = ((JRELocaleProviderAdapter)adapter).getLanguageTagSet(category);
    if (!langtags.isEmpty()) {
        for (Iterator<Locale> itr = candidates.iterator(); itr.hasNext();) {
            if (!LocaleProviderAdapter.isSupportedLocale(itr.next(), type, langtags)) {
                itr.remove();
            }
        }
    }

    // Force fallback to Locale.ENGLISH for CLDR time zone names support
    if (locale.getLanguage() != "en"
            && type == CLDR && category.equals("TimeZoneNames")) {
        candidates.add(candidates.size() - 1, Locale.ENGLISH);
    }
    return candidates;
}
 

@Override
 public List<Locale> getCandidateLocales(String baseName, Locale locale) {
    List<Locale> candidates = super.getCandidateLocales(baseName, locale);
    // Weed out Locales which are known to have no resource bundles
    int lastDot = baseName.lastIndexOf('.');
    String category = (lastDot >= 0) ? baseName.substring(lastDot + 1) : baseName;
    LocaleProviderAdapter.Type type = baseName.contains(DOTCLDR) ? CLDR : JRE;
    LocaleProviderAdapter adapter = LocaleProviderAdapter.forType(type);
    Set<String> langtags = ((JRELocaleProviderAdapter)adapter).getLanguageTagSet(category);
    if (!langtags.isEmpty()) {
        for (Iterator<Locale> itr = candidates.iterator(); itr.hasNext();) {
            if (!LocaleProviderAdapter.isSupportedLocale(itr.next(), type, langtags)) {
                itr.remove();
            }
        }
    }

    // Force fallback to Locale.ENGLISH for CLDR time zone names support
    if (locale.getLanguage() != "en"
            && type == CLDR && category.equals("TimeZoneNames")) {
        candidates.add(candidates.size() - 1, Locale.ENGLISH);
    }
    return candidates;
}
 

private static BreakIterator createBreakInstance(LocaleProviderAdapter adapter, Locale locale, int type) {
    BreakIteratorProvider breakIteratorProvider = adapter.getBreakIteratorProvider();
    BreakIterator iterator = null;
    switch (type) {
    case CHARACTER_INDEX:
        iterator = breakIteratorProvider.getCharacterInstance(locale);
        break;
    case WORD_INDEX:
        iterator = breakIteratorProvider.getWordInstance(locale);
        break;
    case LINE_INDEX:
        iterator = breakIteratorProvider.getLineInstance(locale);
        break;
    case SENTENCE_INDEX:
        iterator = breakIteratorProvider.getSentenceInstance(locale);
        break;
    }
    return iterator;
}
 

static void bug8013903Test() {
    if (System.getProperty("os.name").startsWith("Windows")) {
        Date sampleDate = new Date(0x10000000000L);
        String fallbackResult = "Heisei 16.Nov.03 (Wed) AM 11:53:47";
        String jreResult = "\u5e73\u6210 16.11.03 (\u6c34) \u5348\u524d 11:53:47";
        Locale l = new Locale("ja", "JP", "JP");
        SimpleDateFormat sdf = new SimpleDateFormat("GGGG yyyy.MMM.dd '('E')' a hh:mm:ss", l);
        sdf.setTimeZone(TimeZone.getTimeZone("America/Los_Angeles"));
        String result = sdf.format(sampleDate);
        System.out.println(result);
        if (LocaleProviderAdapter.getAdapterPreference()
            .contains(LocaleProviderAdapter.Type.JRE)) {
            if (!jreResult.equals(result)) {
                throw new RuntimeException("Format failed. result: \"" +
                    result + "\", expected: \"" + jreResult);
            }
        } else {
            // should be FALLBACK, as Windows HOST does not return
            // display names
            if (!fallbackResult.equals(result)) {
                throw new RuntimeException("Format failed. result: \"" +
                    result + "\", expected: \"" + fallbackResult);
            }
        }
    }
}
 

static void adapterTest(String expected, String lang, String ctry) {
    Locale testLocale = new Locale(lang, ctry);
    LocaleProviderAdapter ldaExpected =
        LocaleProviderAdapter.forType(LocaleProviderAdapter.Type.valueOf(expected));
    if (!ldaExpected.getDateFormatProvider().isSupportedLocale(testLocale)) {
        System.out.println("test locale: "+testLocale+" is not supported by the expected provider: "+ldaExpected+". Ignoring the test.");
        return;
    }
    String preference = System.getProperty("java.locale.providers", "");
    LocaleProviderAdapter lda = LocaleProviderAdapter.getAdapter(DateFormatProvider.class, testLocale);
    LocaleProviderAdapter.Type type = lda.getAdapterType();
    System.out.printf("testLocale: %s, got: %s, expected: %s\n", testLocale, type, expected);
    if (!type.toString().equals(expected)) {
        throw new RuntimeException("Returned locale data adapter is not correct.");
    }
}
 

public CLDRLocaleProviderAdapter() {
    LocaleDataMetaInfo nbmi = null;

    try {
        nbmi = AccessController.doPrivileged(new PrivilegedExceptionAction<LocaleDataMetaInfo>() {
            @Override
            public LocaleDataMetaInfo run() {
                for (LocaleDataMetaInfo ldmi : ServiceLoader.loadInstalled(LocaleDataMetaInfo.class)) {
                    if (ldmi.getType() == LocaleProviderAdapter.Type.CLDR) {
                        return ldmi;
                    }
                }
                return null;
            }
        });
    }  catch (Exception e) {
        // Catch any exception, and continue as if only CLDR's base locales exist.
    }

    nonBaseMetaInfo = nbmi;
}
 

static void adapterTest(String expected, String lang, String ctry) {
    Locale testLocale = new Locale(lang, ctry);
    LocaleProviderAdapter ldaExpected =
        LocaleProviderAdapter.forType(LocaleProviderAdapter.Type.valueOf(expected));
    if (!ldaExpected.getDateFormatProvider().isSupportedLocale(testLocale)) {
        System.out.println("test locale: "+testLocale+" is not supported by the expected provider: "+ldaExpected+". Ignoring the test.");
        return;
    }
    String preference = System.getProperty("java.locale.providers", "");
    LocaleProviderAdapter lda = LocaleProviderAdapter.getAdapter(DateFormatProvider.class, testLocale);
    LocaleProviderAdapter.Type type = lda.getAdapterType();
    System.out.printf("testLocale: %s, got: %s, expected: %s\n", testLocale, type, expected);
    if (!type.toString().equals(expected)) {
        throw new RuntimeException("Returned locale data adapter is not correct.");
    }
}
 

@Override
public boolean isSupportedLocale(Locale locale) {
    if (Locale.ROOT.equals(locale)) {
        return true;
    }
    String calendarType = null;
    if (locale.hasExtensions()) {
        calendarType = locale.getUnicodeLocaleType("ca");
        locale = locale.stripExtensions();
    }
    if (calendarType != null) {
        switch (calendarType) {
            case "buddhist":
            case "japanese":
            case "gregory":
            case "islamic":
            case "roc":
                break;
            default:
                // Unknown calendar type
                return false;
        }
    }
    return LocaleProviderAdapter.forType(Type.CLDR).isSupportedProviderLocale(locale, langtags);
}
 

static void bug8013903Test() {
    if (System.getProperty("os.name").startsWith("Windows")) {
        Date sampleDate = new Date(0x10000000000L);
        String hostResult = "\u5e73\u6210 16.11.03 (Wed) AM 11:53:47";
        String jreResult = "\u5e73\u6210 16.11.03 (\u6c34) \u5348\u524d 11:53:47";
        Locale l = new Locale("ja", "JP", "JP");
        SimpleDateFormat sdf = new SimpleDateFormat("GGGG yyyy.MMM.dd '('E')' a hh:mm:ss", l);
        sdf.setTimeZone(TimeZone.getTimeZone("America/Los_Angeles"));
        String result = sdf.format(sampleDate);
        System.out.println(result);
        if (LocaleProviderAdapter.getAdapterPreference()
            .contains(LocaleProviderAdapter.Type.JRE)) {
            if (!jreResult.equals(result)) {
                throw new RuntimeException("Format failed. result: \"" +
                    result + "\", expected: \"" + jreResult);
            }
        } else {
            // Windows display names. Subject to change if Windows changes its format.
            if (!hostResult.equals(result)) {
                throw new RuntimeException("Format failed. result: \"" +
                    result + "\", expected: \"" + hostResult);
            }
        }
    }
}
 

@Override
 public List<Locale> getCandidateLocales(String baseName, Locale locale) {
    List<Locale> candidates = super.getCandidateLocales(baseName, locale);
    // Weed out Locales which are known to have no resource bundles
    int lastDot = baseName.lastIndexOf('.');
    String category = (lastDot >= 0) ? baseName.substring(lastDot + 1) : baseName;
    LocaleProviderAdapter.Type type = baseName.contains(DOTCLDR) ? CLDR : JRE;
    LocaleProviderAdapter adapter = LocaleProviderAdapter.forType(type);
    Set<String> langtags = ((JRELocaleProviderAdapter)adapter).getLanguageTagSet(category);
    if (!langtags.isEmpty()) {
        for (Iterator<Locale> itr = candidates.iterator(); itr.hasNext();) {
            if (!LocaleProviderAdapter.isSupportedLocale(itr.next(), type, langtags)) {
                itr.remove();
            }
        }
    }

    // Force fallback to Locale.ENGLISH for CLDR time zone names support
    if (locale.getLanguage() != "en"
            && type == CLDR && category.equals("TimeZoneNames")) {
        candidates.add(candidates.size() - 1, Locale.ENGLISH);
    }
    return candidates;
}
 

static void bug8013903Test() {
    if (System.getProperty("os.name").startsWith("Windows")) {
        Date sampleDate = new Date(0x10000000000L);
        String fallbackResult = "Heisei 16.Nov.03 (Wed) AM 11:53:47";
        String jreResult = "\u5e73\u6210 16.11.03 (\u6c34) \u5348\u524d 11:53:47";
        Locale l = new Locale("ja", "JP", "JP");
        SimpleDateFormat sdf = new SimpleDateFormat("GGGG yyyy.MMM.dd '('E')' a hh:mm:ss", l);
        sdf.setTimeZone(TimeZone.getTimeZone("America/Los_Angeles"));
        String result = sdf.format(sampleDate);
        System.out.println(result);
        if (LocaleProviderAdapter.getAdapterPreference()
            .contains(LocaleProviderAdapter.Type.JRE)) {
            if (!jreResult.equals(result)) {
                throw new RuntimeException("Format failed. result: \"" +
                    result + "\", expected: \"" + jreResult);
            }
        } else {
            // should be FALLBACK, as Windows HOST does not return
            // display names
            if (!fallbackResult.equals(result)) {
                throw new RuntimeException("Format failed. result: \"" +
                    result + "\", expected: \"" + fallbackResult);
            }
        }
    }
}
 

private static BreakIterator createBreakInstance(LocaleProviderAdapter adapter, Locale locale, int type) {
    BreakIteratorProvider breakIteratorProvider = adapter.getBreakIteratorProvider();
    BreakIterator iterator = null;
    switch (type) {
    case CHARACTER_INDEX:
        iterator = breakIteratorProvider.getCharacterInstance(locale);
        break;
    case WORD_INDEX:
        iterator = breakIteratorProvider.getWordInstance(locale);
        break;
    case LINE_INDEX:
        iterator = breakIteratorProvider.getLineInstance(locale);
        break;
    case SENTENCE_INDEX:
        iterator = breakIteratorProvider.getSentenceInstance(locale);
        break;
    }
    return iterator;
}
 

@Override
public String getDisplayName(Locale locale) {
    Objects.requireNonNull(locale, "locale");
    LocaleResources lr = LocaleProviderAdapter.getResourceBundleBased()
                                .getLocaleResources(locale);
    ResourceBundle rb = lr.getJavaTimeFormatData();
    return rb.containsKey("field.week") ? rb.getString("field.week") : toString();
}
 

private static DateFormatSymbols getProviderInstance(Locale locale) {
    LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(DateFormatSymbolsProvider.class, locale);
    DateFormatSymbolsProvider provider = adapter.getDateFormatSymbolsProvider();
    DateFormatSymbols dfsyms = provider.getInstance(locale);
    if (dfsyms == null) {
        provider = LocaleProviderAdapter.forJRE().getDateFormatSymbolsProvider();
        dfsyms = provider.getInstance(locale);
    }
    return dfsyms;
}
 

@Override
public String getDisplayName(Locale locale) {
    Objects.requireNonNull(locale, "locale");
    LocaleResources lr = LocaleProviderAdapter.getResourceBundleBased()
                                .getLocaleResources(locale);
    ResourceBundle rb = lr.getJavaTimeFormatData();
    return rb.containsKey("field.week") ? rb.getString("field.week") : toString();
}
 

private static String getDefaultPattern(Locale locale) {
    // Get the pattern for the default locale.
    LocaleProviderAdapter adapter;
    adapter = LocaleProviderAdapter.getAdapter(NumberFormatProvider.class,
                                               locale);
    LocaleResources lr = adapter.getLocaleResources(locale);
    if (lr == null) {
        lr = LocaleProviderAdapter.forJRE().getLocaleResources(locale);
    }
    String[] all = lr.getNumberPatterns();
    return all[0];
}
 

@Override
public String getDisplayName(Locale locale) {
    Objects.requireNonNull(locale, "locale");
    if (rangeUnit == YEARS) {  // only have values for week-of-year
        LocaleResources lr = LocaleProviderAdapter.getResourceBundleBased()
                .getLocaleResources(locale);
        ResourceBundle rb = lr.getJavaTimeFormatData();
        return rb.containsKey("field.week") ? rb.getString("field.week") : name;
    }
    return name;
}
 

private static DateFormat get(LocaleProviderAdapter adapter, int timeStyle, int dateStyle, Locale loc) {
    DateFormatProvider provider = adapter.getDateFormatProvider();
    DateFormat dateFormat;
    if (timeStyle == -1) {
        dateFormat = provider.getDateInstance(dateStyle, loc);
    } else {
        if (dateStyle == -1) {
            dateFormat = provider.getTimeInstance(timeStyle, loc);
        } else {
            dateFormat = provider.getDateTimeInstance(dateStyle, timeStyle, loc);
        }
    }
    return dateFormat;
}
 

private static String getDefaultPattern(Locale loc) {
    LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(DateFormatProvider.class, loc);
    LocaleResources lr = adapter.getLocaleResources(loc);
    if (lr == null) {
        lr = LocaleProviderAdapter.forJRE().getLocaleResources(loc);
    }
    return lr.getDateTimePattern(DateFormat.SHORT, DateFormat.SHORT, null);
}
 

private static String getDefaultPattern(Locale loc) {
    LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(DateFormatProvider.class, loc);
    LocaleResources lr = adapter.getLocaleResources(loc);
    if (lr == null) {
        lr = LocaleProviderAdapter.forJRE().getLocaleResources(loc);
    }
    return lr.getDateTimePattern(DateFormat.SHORT, DateFormat.SHORT, null);
}
 

private static BreakIterator createBreakInstance(Locale locale,
                                                 int type) {
    LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(BreakIteratorProvider.class, locale);
    BreakIterator iterator = createBreakInstance(adapter, locale, type);
    if (iterator == null) {
        iterator = createBreakInstance(LocaleProviderAdapter.forJRE(), locale, type);
    }
    return iterator;
}
 

/**
 * Returns a name for the locale's variant code that is appropriate for display to the
 * user.  If possible, the name will be localized for inLocale.  If the locale
 * doesn't specify a variant code, this function returns the empty string.
 *
 * @param inLocale The locale for which to retrieve the display variant code.
 * @return The name of the display variant code appropriate to the given locale.
 * @exception NullPointerException if <code>inLocale</code> is <code>null</code>
 */
public String getDisplayVariant(Locale inLocale) {
    if (baseLocale.getVariant().length() == 0)
        return "";

    LocaleResources lr = LocaleProviderAdapter.forJRE().getLocaleResources(inLocale);

    String names[] = getDisplayVariantArray(inLocale);

    // Get the localized patterns for formatting a list, and use
    // them to format the list.
    return formatList(names,
                      lr.getLocaleName("ListPattern"),
                      lr.getLocaleName("ListCompositionPattern"));
}
 

/**
 * Returns a name for the locale's variant code that is appropriate for display to the
 * user.  If possible, the name will be localized for inLocale.  If the locale
 * doesn't specify a variant code, this function returns the empty string.
 *
 * @param inLocale The locale for which to retrieve the display variant code.
 * @return The name of the display variant code appropriate to the given locale.
 * @exception NullPointerException if <code>inLocale</code> is <code>null</code>
 */
public String getDisplayVariant(Locale inLocale) {
    if (baseLocale.getVariant().length() == 0)
        return "";

    LocaleResources lr = LocaleProviderAdapter.forJRE().getLocaleResources(inLocale);

    String names[] = getDisplayVariantArray(inLocale);

    // Get the localized patterns for formatting a list, and use
    // them to format the list.
    return formatList(names,
                      lr.getLocaleName("ListPattern"),
                      lr.getLocaleName("ListCompositionPattern"));
}
 

/**
 * 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 Collator getInstance(Locale desiredLocale) {
    SoftReference<Collator> ref = cache.get(desiredLocale);
    Collator result = (ref != null) ? ref.get() : null;
    if (result == null) {
        LocaleProviderAdapter adapter;
        adapter = LocaleProviderAdapter.getAdapter(CollatorProvider.class,
                                                   desiredLocale);
        CollatorProvider provider = adapter.getCollatorProvider();
        result = provider.getInstance(desiredLocale);
        if (result == null) {
            result = LocaleProviderAdapter.forJRE()
                         .getCollatorProvider().getInstance(desiredLocale);
        }
        while (true) {
            if (ref != null) {
                // Remove the empty SoftReference if any
                cache.remove(desiredLocale, ref);
            }
            ref = cache.putIfAbsent(desiredLocale, new SoftReference<>(result));
            if (ref == null) {
                break;
            }
            Collator cachedColl = ref.get();
            if (cachedColl != null) {
                result = cachedColl;
                break;
            }
        }
    }
    return (Collator) result.clone(); // make the world safe
}
 

public static void main(String[] args) {
    List<LocaleProviderAdapter.Type> types = LocaleProviderAdapter.getAdapterPreference();

    try {
        types.set(0, null);
    } catch (UnsupportedOperationException e) {
        // success
        return;
    }

    throw new RuntimeException("LocaleProviderAdapter.getAdapterPrefence() returned a modifiable list.");
}
 

@Override
public String getDisplayName(Locale locale) {
    Objects.requireNonNull(locale, "locale");
    LocaleResources lr = LocaleProviderAdapter.getResourceBundleBased()
                                .getLocaleResources(locale);
    ResourceBundle rb = lr.getJavaTimeFormatData();
    return rb.containsKey("field.week") ? rb.getString("field.week") : toString();
}