/**
* Gets an instance of the GregorianChronology in the given time zone.
*
* @param zone the time zone to get the chronology in, null is default
* @param minDaysInFirstWeek minimum number of days in first week of the year; default is 4
* @return a chronology in the specified time zone
*/
public static GregorianChronology getInstance(DateTimeZone zone, int minDaysInFirstWeek) {
if (zone == null) {
zone = DateTimeZone.getDefault();
}
GregorianChronology chrono;
synchronized (cCache) {
GregorianChronology[] chronos = (GregorianChronology[]) cCache.get(zone);
if (chronos == null) {
chronos = new GregorianChronology[7];
cCache.put(zone, chronos);
}
try {
chrono = chronos[minDaysInFirstWeek - 1];
} catch (ArrayIndexOutOfBoundsException e) {
throw new IllegalArgumentException("Invalid min days in first week: " + minDaysInFirstWeek);
}
if (chrono == null) {
if (zone == DateTimeZone.UTC) {
chrono = new GregorianChronology(null, null, minDaysInFirstWeek);
} else {
chrono = getInstance(DateTimeZone.UTC, minDaysInFirstWeek);
chrono =
new GregorianChronology(
ZonedChronology.getInstance(chrono, zone), null, minDaysInFirstWeek);
}
chronos[minDaysInFirstWeek - 1] = chrono;
}
}
return chrono;
}
/**
* Gets an instance of the EthiopicChronology in the given time zone.
*
* @param zone the time zone to get the chronology in, null is default
* @param minDaysInFirstWeek minimum number of days in first week of the year; default is 4
* @return a chronology in the specified time zone
*/
public static EthiopicChronology getInstance(DateTimeZone zone, int minDaysInFirstWeek) {
if (zone == null) {
zone = DateTimeZone.getDefault();
}
EthiopicChronology chrono;
EthiopicChronology[] chronos = cCache.get(zone);
if (chronos == null) {
chronos = new EthiopicChronology[7];
EthiopicChronology[] oldChronos = cCache.putIfAbsent(zone, chronos);
if (oldChronos != null) {
chronos = oldChronos;
}
}
try {
chrono = chronos[minDaysInFirstWeek - 1];
} catch (ArrayIndexOutOfBoundsException e) {
throw new IllegalArgumentException("Invalid min days in first week: " + minDaysInFirstWeek);
}
if (chrono == null) {
synchronized (chronos) {
chrono = chronos[minDaysInFirstWeek - 1];
if (chrono == null) {
if (zone == DateTimeZone.UTC) {
// First create without a lower limit.
chrono = new EthiopicChronology(null, null, minDaysInFirstWeek);
// Impose lower limit and make another EthiopicChronology.
DateTime lowerLimit = new DateTime(1, 1, 1, 0, 0, 0, 0, chrono);
chrono =
new EthiopicChronology(
LimitChronology.getInstance(chrono, lowerLimit, null),
null,
minDaysInFirstWeek);
} else {
chrono = getInstance(DateTimeZone.UTC, minDaysInFirstWeek);
chrono =
new EthiopicChronology(
ZonedChronology.getInstance(chrono, zone), null, minDaysInFirstWeek);
}
chronos[minDaysInFirstWeek - 1] = chrono;
}
}
}
return chrono;
}
