Examples of com.ibm.icu.util.ULocale

com.ibm.icu.util.ULocale
A class analogous to {@link java.util.Locale} that provides additionalsupport for ICU protocol. In ICU 3.0 this class is enhanced to support RFC 3066 language identifiers.
Many classes and services in ICU follow a factory idiom, in which a factory method or object responds to a client request with an object. The request includes a locale (the requested locale), and the returned object is constructed using data for that locale. The system may lack data for the requested locale, in which case the locale fallback mechanism will be invoked until a populated locale is found (the valid locale). Furthermore, even when a populated locale is found (the valid locale), further fallback may be required to reach a locale containing the specific data required by the service (the actual locale).
ULocale performs 'normalization' and 'canonicalization' of locale ids. Normalization 'cleans up' ICU locale ids as follows:
- language, script, country, variant, and keywords are properly cased
  (lower, title, upper, upper, and lower case respectively)
- hyphens used as separators are converted to underscores
- three-letter language and country ids are converted to two-letter equivalents where available
- surrounding spaces are removed from keywords and values
- if there are multiple keywords, they are put in sorted order
Canonicalization additionally performs the following:
- POSIX ids are converted to ICU format IDs
- 'grandfathered' 3066 ids are converted to ICU standard form
- 'PREEURO' and 'EURO' variants are converted to currency keyword form, with the currency id appropriate to the country of the locale (for PREEURO) or EUR (for EURO).
All ULocale constructors automatically normalize the locale id. To handle POSIX ids, canonicalize can be called to convert the id to canonical form, or the canonicalInstance factory method can be called.

This class provides selectors {@link #VALID_LOCALE} and {@link #ACTUAL_LOCALE} intended for use in methods namedgetLocale(). These methods exist in several ICU classes, including {@link com.ibm.icu.util.Calendar}, {@link com.ibm.icu.util.Currency}, {@link com.ibm.icu.text.UFormat}, {@link com.ibm.icu.text.BreakIterator}, {@link com.ibm.icu.text.Collator}, {@link com.ibm.icu.text.DateFormatSymbols}, and {@link com.ibm.icu.text.DecimalFormatSymbols} and their subclasses, ifany. Once an object of one of these classes has been created, getLocale() may be called on it to determine the valid and actual locale arrived at during the object's construction.
Note: The getLocale() method will be implemented in ICU 3.0; ICU 2.8 contains a partial preview implementation. The actual locale is returned correctly, but the valid locale is not, in most cases. @see java.util.Locale @author weiv @author Alan Liu @author Ram Viswanadha @stable ICU 2.8

   *
   * The default is DIN 5007-1, this shows how to tailor a collator to get DIN 5007-2 behavior.
   *  http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4423383
   */
  public void testCustomRules() throws Exception {
    RuleBasedCollator baseCollator = (RuleBasedCollator) Collator.getInstance(new ULocale("de_DE"));


    String DIN5007_2_tailorings =
      "& ae , a\u0308 & AE , A\u0308"+
      "& oe , o\u0308 & OE , O\u0308"+
      "& ue , u\u0308 & UE , u\u0308";

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  public IValue printDateInLocale(IDateTime inputDate, IString formatString, IString locale) 
  //@doc{Print an input date using a specific locale and format string}
  {
    try {
      SimpleDateFormat sd = new SimpleDateFormat(formatString.getValue(),new ULocale(locale.getValue())); 
      Calendar cal = getCalendarForDate(inputDate);
      sd.setCalendar(cal);
      return values.string(sd.format(cal.getTime()));
    } catch (IllegalArgumentException iae) {
      throw RuntimeExceptionFactory.dateTimePrintingError("Cannot print time with format " + formatString.getValue() + ", in locale: " + locale.getValue(), null, null);

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  public IValue printDateInLocale(IDateTime inputDate, IString locale) 
  //@doc{Print an input date using a specific locale and a default format string}
  {
    try {
      SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd",new ULocale(locale.getValue())); 
      Calendar cal = getCalendarForDate(inputDate);
      sd.setCalendar(cal);
      return values.string(sd.format(cal.getTime()));
    } catch (IllegalArgumentException iae) {
      throw RuntimeExceptionFactory.dateTimePrintingError("Cannot print time in locale: " + locale.getValue(), null, null);

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  public IValue printTimeInLocale(IDateTime inputTime, IString formatString, IString locale) 
  //@doc{Print an input time using a specific locale and format string}
  {
    try {
      SimpleDateFormat sd = new SimpleDateFormat(formatString.getValue(),new ULocale(locale.getValue())); 
      Calendar cal = getCalendarForTime(inputTime);
      sd.setCalendar(cal);
      return values.string(sd.format(cal.getTime()));
    } catch (IllegalArgumentException iae) {
      throw RuntimeExceptionFactory.dateTimePrintingError("Cannot print time in locale: " + locale.getValue(), null, null);

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  public IValue printTimeInLocale(IDateTime inputTime, IString locale) 
  //@doc{Print an input time using a specific locale and a default format string}
  {
    try {
      SimpleDateFormat sd = new SimpleDateFormat("HH:mm:ss.SSSZ",new ULocale(locale.getValue())); 
      Calendar cal = getCalendarForTime(inputTime);
      sd.setCalendar(cal);
      return values.string(sd.format(cal.getTime()));
    } catch (IllegalArgumentException iae) {
      throw RuntimeExceptionFactory.dateTimePrintingError("Cannot print time in locale: " + locale.getValue(), null, null);

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  public IValue printDateTimeInLocale(IDateTime inputDateTime, IString formatString, IString locale) 
  //@doc{Print an input datetime using a specific locale and format string}
  {
    try {
      SimpleDateFormat sd = new SimpleDateFormat(formatString.getValue(),new ULocale(locale.getValue())); 
      Calendar cal = getCalendarForDateTime(inputDateTime);
      sd.setCalendar(cal);
      return values.string(sd.format(cal.getTime()));
    } catch (IllegalArgumentException iae) {
      throw RuntimeExceptionFactory.dateTimePrintingError("Cannot print datetime using format string: " + formatString.getValue() +

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  public IValue printDateTimeInLocale(IDateTime inputDateTime, IString locale) 
  //@doc{Print an input datetime using a specific locale and a default format string}
  {
    try {
      SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSSZ",new ULocale(locale.getValue())); 
      Calendar cal = getCalendarForDateTime(inputDateTime);
      sd.setCalendar(cal);
      return values.string(sd.format(cal.getTime()));
    } catch (IllegalArgumentException iae) {
      throw RuntimeExceptionFactory.dateTimePrintingError("Cannot print datetime in locale: " + locale.getValue(), null, null);

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    } catch (IOException e) {
      log.error("Couldn't read from url: " + url, e);
      throw new DataSourceException(ReasonType.INVALID_REQUEST, "Couldn't read from url: " + url);
    }
    DataTable dataTable = null;
    ULocale requestLocale = DataSourceHelper.getLocaleFromRequest(request);
    try {
      // Note: We assume that all the columns in the CSV file are text columns. In cases where the
      // column types are known in advance, this behavior can be overridden by passing a list of
      // ColumnDescription objects specifying the column types. See CsvDataSourceHelper.read() for
      // more details.

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    columnDescriptions.add(new ColumnDescription("B", ValueType.TIMEOFDAY, "B"));
    TimeOfDayValue hindiTimeOfDayValue = new TimeOfDayValue(1, 12, 1);
    String hindiTimeOfDayString =  "\u0966\u0967\u003a\u0967\u0968\u003a\u0966\u0967";
    Reader reader = new StringReader("1," + hindiTimeOfDayString);
    DataTable dataTable = CsvDataSourceHelper.read(reader, columnDescriptions, false,
        new ULocale("hi_IN"));
    assertEquals(1, dataTable.getNumberOfRows());
    assertEquals(2, dataTable.getNumberOfColumns());
    assertEquals(new NumberValue(1), dataTable.getRow(0).getCell(0).getValue());
    assertEquals(hindiTimeOfDayValue, dataTable.getRow(0).getCell(1).getValue());
  }

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  /*
   * Create a locale from localeID.
   * Then return the appropriate collator for the locale.
   */
  private Collator createFromLocale(String localeID) {
    return Collator.getInstance(new ULocale(localeID));
  }

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