public Rounding build() {
Rounding timeZoneRounding;
if (unit != null) {
if (preTz.equals(DateTimeZone.UTC) && postTz.equals(DateTimeZone.UTC)) {
timeZoneRounding = new UTCTimeZoneRoundingFloor(unit);
} else if (preZoneAdjustLargeInterval
|| unit.field().getDurationField().getUnitMillis()
< DateTimeConstants.MILLIS_PER_HOUR * 12) {
timeZoneRounding = new TimeTimeZoneRoundingFloor(unit, preTz, postTz);
} else {
timeZoneRounding = new DayTimeZoneRoundingFloor(unit, preTz, postTz);
}
} else {
if (preTz.equals(DateTimeZone.UTC) && postTz.equals(DateTimeZone.UTC)) {
timeZoneRounding = new UTCIntervalTimeZoneRounding(interval);
} else if (preZoneAdjustLargeInterval
|| interval < DateTimeConstants.MILLIS_PER_HOUR * 12) {
timeZoneRounding = new TimeIntervalTimeZoneRounding(interval, preTz, postTz);
} else {
timeZoneRounding = new DayIntervalTimeZoneRounding(interval, preTz, postTz);
}
}
if (preOffset != 0 || postOffset != 0) {
timeZoneRounding = new PrePostRounding(timeZoneRounding, preOffset, postOffset);
}
if (factor != 1.0f) {
timeZoneRounding = new FactorRounding(timeZoneRounding, factor);
}
return timeZoneRounding;
}
/**
* Randomized test on TimeUnitRounding. Test uses random {@link DateTimeUnit} and {@link
* DateTimeZone} and often (50% of the time) chooses test dates that are exactly on or close to
* offset changes (e.g. DST) in the chosen time zone.
*
* <p>It rounds the test date down and up and performs various checks on the rounding unit
* interval that is defined by this. Assumptions tested are described in {@link
* #assertInterval(long, long, long, Rounding, DateTimeZone)}
*/
public void testRoundingRandom() {
for (int i = 0; i < 1000; ++i) {
DateTimeUnit timeUnit = randomTimeUnit();
DateTimeZone tz = randomDateTimeZone();
Rounding rounding = new Rounding.TimeUnitRounding(timeUnit, tz);
long date =
Math.abs(
randomLong()
% (2 * (long) 10e11)); // 1970-01-01T00:00:00Z - 2033-05-18T05:33:20.000+02:00
long unitMillis = timeUnit.field(tz).getDurationField().getUnitMillis();
if (randomBoolean()) {
nastyDate(date, tz, unitMillis);
}
final long roundedDate = rounding.round(date);
final long nextRoundingValue = rounding.nextRoundingValue(roundedDate);
assertInterval(roundedDate, date, nextRoundingValue, rounding, tz);
// check correct unit interval width for units smaller than a day, they should be fixed size
// except for transitions
if (unitMillis <= DateTimeConstants.MILLIS_PER_DAY) {
// if the interval defined didn't cross timezone offset transition, it should cover
// unitMillis width
if (tz.getOffset(roundedDate - 1) == tz.getOffset(nextRoundingValue + 1)) {
assertThat(
"unit interval width not as expected for ["
+ timeUnit
+ "], ["
+ tz
+ "] at "
+ new DateTime(roundedDate),
nextRoundingValue - roundedDate,
equalTo(unitMillis));
}
}
}
}
@Override
public long nextRoundingValue(long value) {
return unit.field().getDurationField().getUnitMillis() + value;
}
@Override
public long roundKey(long utcMillis) {
long time = utcMillis + preTz.getOffset(utcMillis);
return unit.field().roundFloor(time);
}
@Override
public long nextRoundingValue(long value) {
return unit.field().roundCeiling(value + 1);
}
@Override
public long roundKey(long utcMillis) {
return unit.field().roundFloor(utcMillis);
}