ZonedDurationField(DurationField field, DateTimeZone zone) {
super(field.getType());
if (!field.isSupported()) {
throw new IllegalArgumentException();
}
iField = field;
iTimeField = useTimeArithmetic(field);
iZone = zone;
}
/**
* Gets the values of a period from an interval.
*
* @param period the period instant to use
* @param startInstant the start instant of an interval to query
* @param endInstant the start instant of an interval to query
* @return the values of the period extracted from the interval
*/
public int[] get(ReadablePeriod period, long startInstant, long endInstant) {
int size = period.size();
int[] values = new int[size];
if (startInstant != endInstant) {
for (int i = 0; i < size; i++) {
DurationField field = period.getFieldType(i).getField(this);
int value = field.getDifference(endInstant, startInstant);
startInstant = field.add(startInstant, value);
values[i] = value;
}
}
return values;
}
/**
* Gets the values of a period from an interval.
*
* @param period the period instant to use
* @param duration the duration to query
* @return the values of the period extracted from the duration
*/
public int[] get(ReadablePeriod period, long duration) {
int size = period.size();
int[] values = new int[size];
if (duration != 0) {
long current = 0;
for (int i = 0; i < size; i++) {
DurationField field = period.getFieldType(i).getField(this);
if (field.isPrecise()) {
int value = field.getDifference(duration, current);
current = field.add(current, value);
values[i] = value;
}
}
}
return values;
}
@Override
public AggregateCount getCounts(String name, Interval interval, DateTimeField resolution) {
DateTime end = interval.getEnd();
Chronology c = interval.getChronology();
DurationField resolutionDuration = resolution.getDurationField();
long[] counts;
if (resolutionDuration.getUnitMillis() == DateTimeConstants.MILLIS_PER_MINUTE) {
// Iterate through each hour in the interval and load the minutes for it
MutableDateTime dt = new MutableDateTime(interval.getStart());
dt.setRounding(c.hourOfDay());
Duration step = Duration.standardHours(1);
List<long[]> hours = new ArrayList<long[]>();
while (dt.isBefore(end)) {
hours.add(getMinCountsForHour(name, dt));
dt.add(step);
}
counts =
MetricUtils.concatArrays(
hours,
interval.getStart().getMinuteOfHour(),
interval.toPeriod().toStandardMinutes().getMinutes() + 1,
60);
} else if (resolutionDuration.getUnitMillis() == DateTimeConstants.MILLIS_PER_HOUR) {
DateTime cursor = new DateTime(c.dayOfMonth().roundFloor(interval.getStart().getMillis()));
List<long[]> days = new ArrayList<long[]>();
Duration step = Duration.standardHours(24);
while (cursor.isBefore(end)) {
days.add(getHourCountsForDay(name, cursor));
cursor = cursor.plus(step);
}
counts =
MetricUtils.concatArrays(
days,
interval.getStart().getHourOfDay(),
interval.toPeriod().toStandardHours().getHours() + 1,
24);
} else {
throw new IllegalArgumentException("Only minute or hour resolution is currently supported");
}
return new AggregateCount(name, interval, counts, resolution);
}
/** @param daysInYear The number of days in each year */
protected FixedYearLengthChronology(int daysInYear) {
this.daysInYear = daysInYear;
this.yearDuration =
new PreciseDurationField(
DurationFieldType.years(), daysInYear * dayDuration.getUnitMillis());
this.centuryDuration =
new PreciseDurationField(DurationFieldType.centuries(), 100 * yearDuration.getUnitMillis());
this.dayOfYear =
new OneBasedPreciseDateTimeField(
DateTimeFieldType.dayOfYear(), dayDuration, this.yearDuration);
this.yearOfCentury =
new PreciseDateTimeField(
DateTimeFieldType.yearOfCentury(), this.yearDuration, this.centuryDuration);
this.year = new YearField(this.yearDuration);
}
private void testAdd(String start, DurationFieldType type, int amt, String end) {
DateTime dtStart = new DateTime(start, GJChronology.getInstance(DateTimeZone.UTC));
DateTime dtEnd = new DateTime(end, GJChronology.getInstance(DateTimeZone.UTC));
assertEquals(dtEnd, dtStart.withFieldAdded(type, amt));
assertEquals(dtStart, dtEnd.withFieldAdded(type, -amt));
DurationField field = type.getField(GJChronology.getInstance(DateTimeZone.UTC));
int diff = field.getDifference(dtEnd.getMillis(), dtStart.getMillis());
assertEquals(amt, diff);
if (type == DurationFieldType.years()
|| type == DurationFieldType.months()
|| type == DurationFieldType.days()) {
YearMonthDay ymdStart = new YearMonthDay(start, GJChronology.getInstance(DateTimeZone.UTC));
YearMonthDay ymdEnd = new YearMonthDay(end, GJChronology.getInstance(DateTimeZone.UTC));
assertEquals(ymdEnd, ymdStart.withFieldAdded(type, amt));
assertEquals(ymdStart, ymdEnd.withFieldAdded(type, -amt));
}
}
private DurationField convertField(DurationField field, HashMap<Object, Object> converted) {
if (field == null || !field.isSupported()) {
return field;
}
if (converted.containsKey(field)) {
return (DurationField) converted.get(field);
}
ZonedDurationField zonedField = new ZonedDurationField(field, getZone());
converted.put(field, zonedField);
return zonedField;
}
static boolean useTimeArithmetic(DurationField field) {
// Use time of day arithmetic rules for unit durations less than
// typical time zone offsets.
return field != null && field.getUnitMillis() < DateTimeConstants.MILLIS_PER_HOUR * 12;
}
public long getDifferenceAsLong(long minuendInstant, long subtrahendInstant) {
int offset = getOffsetToAdd(subtrahendInstant);
return iField.getDifferenceAsLong(
minuendInstant + (iTimeField ? offset : getOffsetToAdd(minuendInstant)),
subtrahendInstant + offset);
}
public long add(long instant, long value) {
int offset = getOffsetToAdd(instant);
instant = iField.add(instant + offset, value);
return instant - (iTimeField ? offset : getOffsetFromLocalToSubtract(instant));
}
public long getMillis(long value, long instant) {
return iField.getMillis(value, addOffset(instant));
}
public long getValueAsLong(long duration, long instant) {
return iField.getValueAsLong(duration, addOffset(instant));
}
public int getValue(long duration, long instant) {
return iField.getValue(duration, addOffset(instant));
}
public long getUnitMillis() {
return iField.getUnitMillis();
}
public boolean isPrecise() {
return iTimeField ? iField.isPrecise() : iField.isPrecise() && this.iZone.isFixed();
}
/**
* A Chronology in which every year has the same number of days. Such calendar systems are used in
* many climate simulations.
*
* <p>In these Chronologies, a millisecond instant of zero corresponds with 1970-01-01T00:00:00.000Z
* and a year has a fixed number of milliseconds.
*
* <p>There is no concept of an era in these Chronologies, so all durations and fields relating to
* this concept are not supported. Additionally, the concept of a "weekyear" (the year that "owns" a
* given week) is not implemented.
*
* <p>Instances of this class can only be created in {@link DateTimeZone#UTC}. (Support for time
* zones makes little sense in this chronology).
*
* <p>Instances of this class are immutable.
*
* <p><i>Note: Much of this code was copied from the package-private BasicChronology.</i>
*
* @author Jon Blower
* @see "http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.4/cf-conventions.html#calendar"
*/
abstract class FixedYearLengthChronology extends BaseChronology {
///// DURATIONS /////
private static final DurationField millisecondDuration = MillisDurationField.INSTANCE;
private static final DurationField secondDuration =
new PreciseDurationField(DurationFieldType.seconds(), DateTimeConstants.MILLIS_PER_SECOND);
private static final DurationField minuteDuration =
new PreciseDurationField(DurationFieldType.minutes(), DateTimeConstants.MILLIS_PER_MINUTE);
private static final DurationField hourDuration =
new PreciseDurationField(DurationFieldType.hours(), DateTimeConstants.MILLIS_PER_HOUR);
private static final DurationField halfdayDuration =
new PreciseDurationField(
DurationFieldType.halfdays(), 12 * DateTimeConstants.MILLIS_PER_HOUR);
private static final DurationField dayDuration =
new PreciseDurationField(DurationFieldType.days(), 2 * halfdayDuration.getUnitMillis());
private static final DurationField weekDuration =
new PreciseDurationField(DurationFieldType.weeks(), 7 * dayDuration.getUnitMillis());
// We don't know the length of the year or century until we know how many
// days there are in a year
private final DurationField yearDuration;
private final DurationField centuryDuration;
///// DATE-TIME FIELDS /////
private static final DateTimeField millisOfSecond =
new PreciseDateTimeField(
DateTimeFieldType.millisOfSecond(), millisecondDuration, secondDuration);
private static final DateTimeField millisOfDay =
new PreciseDateTimeField(DateTimeFieldType.millisOfDay(), millisecondDuration, dayDuration);
private static final DateTimeField secondOfMinute =
new PreciseDateTimeField(DateTimeFieldType.secondOfMinute(), secondDuration, minuteDuration);
private static final DateTimeField secondOfDay =
new PreciseDateTimeField(DateTimeFieldType.secondOfDay(), secondDuration, dayDuration);
private static final DateTimeField minuteOfHour =
new PreciseDateTimeField(DateTimeFieldType.minuteOfHour(), minuteDuration, hourDuration);
private static final DateTimeField minuteOfDay =
new PreciseDateTimeField(DateTimeFieldType.minuteOfDay(), minuteDuration, dayDuration);
private static final DateTimeField hourOfDay =
new PreciseDateTimeField(DateTimeFieldType.hourOfDay(), hourDuration, dayDuration);
private static final DateTimeField hourOfHalfday =
new PreciseDateTimeField(DateTimeFieldType.hourOfHalfday(), hourDuration, halfdayDuration);
private static final DateTimeField halfdayOfDay =
new PreciseDateTimeField(DateTimeFieldType.halfdayOfDay(), halfdayDuration, dayDuration);
private static final DateTimeField clockhourOfDay =
new ZeroIsMaxDateTimeField(hourOfDay, DateTimeFieldType.clockhourOfDay());
private static final DateTimeField clockhourOfHalfday =
new ZeroIsMaxDateTimeField(hourOfHalfday, DateTimeFieldType.clockhourOfHalfday());
private static final DateTimeField dayOfWeek =
new PreciseDateTimeField(DateTimeFieldType.dayOfWeek(), dayDuration, weekDuration);
// We don't know the length of the year or century until we know how many
// days there are in a year
private final DateTimeField dayOfYear;
private final DateTimeField yearOfCentury;
private final DateTimeField year;
private final int daysInYear;
private static final class YearField extends PreciseDurationDateTimeField {
public YearField(DurationField yearDuration) {
super(DateTimeFieldType.year(), yearDuration);
}
@Override
public int get(long instant) {
// We need to use Math.floor() to deal with negative instants
return (int) Math.floor(instant * 1.0 / this.getDurationField().getUnitMillis()) + 1970;
}
/** Returns null: the field has no range */
@Override
public DurationField getRangeDurationField() {
return null;
}
@Override
public int getMinimumValue() {
return this.get(Long.MIN_VALUE);
}
@Override
// We subtract one to ensure that the whole of this year can be
// encoded
public int getMaximumValue() {
return this.get(Long.MAX_VALUE) - 1;
}
};
///// CONSTRUCTORS AND FACTORIES /////
/** @param daysInYear The number of days in each year */
protected FixedYearLengthChronology(int daysInYear) {
this.daysInYear = daysInYear;
this.yearDuration =
new PreciseDurationField(
DurationFieldType.years(), daysInYear * dayDuration.getUnitMillis());
this.centuryDuration =
new PreciseDurationField(DurationFieldType.centuries(), 100 * yearDuration.getUnitMillis());
this.dayOfYear =
new OneBasedPreciseDateTimeField(
DateTimeFieldType.dayOfYear(), dayDuration, this.yearDuration);
this.yearOfCentury =
new PreciseDateTimeField(
DateTimeFieldType.yearOfCentury(), this.yearDuration, this.centuryDuration);
this.year = new YearField(this.yearDuration);
}
///// DURATION ACCESSORS /////
@Override
public final DurationField millis() {
return millisecondDuration;
}
@Override
public final DurationField seconds() {
return secondDuration;
}
@Override
public final DurationField minutes() {
return minuteDuration;
}
@Override
public final DurationField hours() {
return hourDuration;
}
@Override
public final DurationField halfdays() {
return halfdayDuration;
}
/** Each day has exactly the same length: there is no daylight saving */
@Override
public final DurationField days() {
return dayDuration;
}
/** Each week has 7 days */
@Override
public final DurationField weeks() {
return weekDuration;
}
@Override
public abstract DurationField months();
@Override
public final DurationField years() {
return this.yearDuration;
}
@Override
public final DurationField centuries() {
return this.centuryDuration;
}
///// DATE-TIME FIELD ACCESSORS /////
@Override
public final DateTimeField millisOfSecond() {
return millisOfSecond;
}
@Override
public final DateTimeField millisOfDay() {
return millisOfDay;
}
@Override
public final DateTimeField secondOfMinute() {
return secondOfMinute;
}
@Override
public final DateTimeField secondOfDay() {
return secondOfDay;
}
@Override
public final DateTimeField minuteOfHour() {
return minuteOfHour;
}
@Override
public final DateTimeField minuteOfDay() {
return minuteOfDay;
}
@Override
public final DateTimeField hourOfDay() {
return hourOfDay;
}
@Override
public final DateTimeField hourOfHalfday() {
return hourOfHalfday;
}
@Override
public final DateTimeField halfdayOfDay() {
return halfdayOfDay;
}
@Override
public final DateTimeField clockhourOfDay() {
return clockhourOfDay;
}
@Override
public final DateTimeField clockhourOfHalfday() {
return clockhourOfHalfday;
}
@Override
public final DateTimeField dayOfWeek() {
return dayOfWeek;
}
@Override
public abstract DateTimeField dayOfMonth();
@Override
public final DateTimeField dayOfYear() {
return dayOfYear;
}
@Override
public abstract DateTimeField monthOfYear();
@Override
public final DateTimeField year() {
return year;
}
@Override
public final DateTimeField yearOfCentury() {
return yearOfCentury;
}
/** Returns the number of days in the year */
final int getDaysInYear() {
return this.daysInYear;
}
/** Always returns UTC */
@Override
public final DateTimeZone getZone() {
return DateTimeZone.UTC;
}
/** Throws UnsupportedOperationException unless the time zone is UTC */
@Override
public final Chronology withZone(DateTimeZone zone) {
if (zone.equals(DateTimeZone.UTC)) return this.withUTC();
throw new UnsupportedOperationException("Not supported yet.");
}
/** Returns this object */
@Override
public final Chronology withUTC() {
return this;
}
}