Heya,
I got this strange behavior with rounding and timezone. Depending on the
type of rounding (dayOfMonth vs. minuteOfHour) I am getting different
results for the same rounded value. The following code runs with dayOfMonth:
MutableDateTime time = new MutableDateTime(DateTimeZone.UTC);
time.setZone(DateTimeZone.forOffsetHours(1));
time.setRounding(time.getChronology().dayOfMonth(),
MutableDateTime.ROUND_FLOOR);
MutableDateTime utcTime = new MutableDateTime(DateTimeZone.UTC);
utcTime.setRounding(utcTime.getChronology().dayOfMonth(),
MutableDateTime.ROUND_FLOOR);
time.setMillis(0);
utcTime.setMillis(0);
System.out.println("time: " + time + ", utc " + utcTime);
System.out.println("time_millis: " + time.getMillis() + ",
utc_millis " + utcTime.getMillis());
And the output shows that the time millis differ between the utc one, and
the time zone one. On the other hand, just changing to round based on
minuteOfHour, results in the millis between the two to be the same:
MutableDateTime time = new MutableDateTime(DateTimeZone.UTC);
time.setZone(DateTimeZone.forOffsetHours(1));
time.setRounding(time.getChronology().minuteOfHour(),
MutableDateTime.ROUND_FLOOR);
MutableDateTime utcTime = new MutableDateTime(DateTimeZone.UTC);
utcTime.setRounding(utcTime.getChronology().minuteOfHour(),
MutableDateTime.ROUND_FLOOR);
time.setMillis(0);
utcTime.setMillis(0);
System.out.println("time: " + time + ", utc " + utcTime);
System.out.println("time_millis: " + time.getMillis() + ",
utc_millis " + utcTime.getMillis());
I must be missing something obvious, but I don't understand why the results
would be different between the two runs? The results of the two runs should
be the same (and I think they all should have 0 as millis, no?).
-shay.banon
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