Throwing IllegalArgumentException while formatting minimum date of Minguo calendar

[iamcalendar]

After running the following code

CalendarSystem<MinguoCalendar> calsys = MinguoCalendar.axis().getCalendarSystem();
MinguoCalendar minDate = calsys.transform(calsys.getMinimumSinceUTC()); // BEFORE_ROC-1000001911-01-01
ChronoFormatter<MinguoCalendar> formatter = ChronoFormatter
        .ofPattern("yyyy", PatternType.CLDR, Locale.ENGLISH, MinguoCalendar.axis());
System.out.println(formatter.format(minDate));

we get

IllegalArgumentException: Element YEAR_OF_ERA cannot be printed as the formatted value 1000001911 exceeds the maximum width of 9.

while expecting 1000001911 as output (because minDate is formattable).

We suggest to change the minimum date of Minguo calendar to BEFORE_ROC-999999999-01-01

In other word, we suggest to override getMinimumSinceUTC method of MinguoCalendar class as

@Override
public long getMinimumSinceUTC() {
    return -365242521549; // BEFORE_ROC-999999999-01-01
}

[MenoData]

Sounds reasonable (minimum effort for making such extreme values formattable which is more important than to support the edge case value itself).

[MenoData]

Similar problem also located in Julian calendar, Thai solar calendar etc. Let's favor formattability for such extrem values.

[MenoData]

I have now extended the general formattability of integer elements up to 10 digits (see issue #797). This solves your problem, too. Do you still insist on adjusting the value ranges of MinguoCalendar or ThaiSolarCalendar? Keep in mind that the actual ranges fit well with the range of PlainDate.

[iamcalendar]

No need to adjust the range. Thanks!

[MenoData]

Okay, then I can close this issue, too (indirectly fixed by issue #797). The next release of Time4A is not far away (maybe next week).

[iamcalendar]

This is kindly FYI that the problem still exists in Time4A version 3.44.4-2018e.

[MenoData]

Will have a look soon...

[MenoData]

Sorry for this oversight. But I have now also added your example as (successful) test case.