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/*
* Copyright (C) 2014-2024 Philip Helger (www.helger.com)
* philip[at]helger[dot]com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.helger.commons.datetime;
import static java.time.temporal.ChronoField.EPOCH_DAY;
import static java.time.temporal.ChronoField.INSTANT_SECONDS;
import static java.time.temporal.ChronoField.NANO_OF_DAY;
import static java.time.temporal.ChronoField.OFFSET_SECONDS;
import static java.time.temporal.ChronoUnit.FOREVER;
import static java.time.temporal.ChronoUnit.NANOS;
import java.io.Serializable;
import java.time.Clock;
import java.time.DateTimeException;
import java.time.DayOfWeek;
import java.time.Duration;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.Month;
import java.time.OffsetDateTime;
import java.time.OffsetTime;
import java.time.Period;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.time.chrono.IsoChronology;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeParseException;
import java.time.temporal.ChronoField;
import java.time.temporal.ChronoUnit;
import java.time.temporal.Temporal;
import java.time.temporal.TemporalAccessor;
import java.time.temporal.TemporalAdjuster;
import java.time.temporal.TemporalAmount;
import java.time.temporal.TemporalField;
import java.time.temporal.TemporalQueries;
import java.time.temporal.TemporalQuery;
import java.time.temporal.TemporalUnit;
import java.time.temporal.UnsupportedTemporalTypeException;
import java.time.temporal.ValueRange;
import java.util.Comparator;
import java.util.Objects;
import java.util.function.Supplier;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;
import com.helger.commons.annotation.Nonempty;
import com.helger.commons.equals.EqualsHelper;
import com.helger.commons.hashcode.HashCodeGenerator;
/**
* A version of {@link OffsetDateTime} that has an optional {@link ZoneOffset}
*
* @since 10.1
*/
@Immutable
public class XMLOffsetDateTime implements Temporal, TemporalAdjuster, Comparable , Serializable
{
/**
* The minimum supported {@code XMLOffsetDateTime},
* '-999999999-01-01T00:00:00+18:00'. This is the local date-time of midnight
* at the start of the minimum date in the maximum offset (larger offsets are
* earlier on the time-line). This combines {@link LocalDateTime#MIN} and
* {@link ZoneOffset#MAX}. This could be used by an application as a "far
* past" date-time.
*/
public static final XMLOffsetDateTime MIN = XMLOffsetDateTime.of (LocalDateTime.MIN, ZoneOffset.MAX);
/**
* The maximum supported {@code XMLOffsetDateTime},
* '+999999999-12-31T23:59:59.999999999-18:00'. This is the local date-time
* just before midnight at the end of the maximum date in the minimum offset
* (larger negative offsets are later on the time-line). This combines
* {@link LocalDateTime#MAX} and {@link ZoneOffset#MIN}. This could be used by
* an application as a "far future" date-time.
*/
public static final XMLOffsetDateTime MAX = XMLOffsetDateTime.of (LocalDateTime.MAX, ZoneOffset.MIN);
/**
* Gets a comparator that compares two {@code XMLOffsetDateTime} instances
* based solely on the instant.
*
* This method differs from the comparison in {@link #compareTo} in that it
* only compares the underlying instant.
*
* @return a comparator that compares in time-line order
* @see #isAfter
* @see #isBefore
* @see #isEqual
*/
public static Comparator timeLineOrder ()
{
return XMLOffsetDateTime::compareInstant;
}
/**
* Compares this {@code XMLOffsetDateTime} to another date-time. The
* comparison is based on the instant.
*
* @param datetime1
* the first date-time to compare, not null
* @param datetime2
* the other date-time to compare to, not null
* @return the comparator value, negative if less, positive if greater
*/
protected static int compareInstant (@Nonnull final XMLOffsetDateTime datetime1, @Nonnull final XMLOffsetDateTime datetime2)
{
if (EqualsHelper.equals (datetime1.m_aOffset, datetime2.m_aOffset))
return datetime1.toLocalDateTime ().compareTo (datetime2.toLocalDateTime ());
int ret = Long.compare (datetime1.toEpochSecond (), datetime2.toEpochSecond ());
if (ret == 0)
ret = datetime1.toLocalTime ().getNano () - datetime2.toLocalTime ().getNano ();
return ret;
}
/**
* The local date-time.
*/
private final LocalDateTime m_aDateTime;
/**
* The offset from UTC/Greenwich.
*/
private final ZoneOffset m_aOffset;
/**
* Obtains the current date-time from the system clock in the default
* time-zone.
*
* This will query the {@link Clock#systemDefaultZone() system clock} in the
* default time-zone to obtain the current date-time. The offset will be
* calculated from the time-zone in the clock.
*
* Using this method will prevent the ability to use an alternate clock for
* testing because the clock is hard-coded.
*
* @return the current date-time using the system clock, not null
*/
@Nonnull
public static XMLOffsetDateTime now ()
{
return now (Clock.systemDefaultZone ());
}
/**
* Obtains the current date-time from the system clock in the specified
* time-zone.
*
* This will query the {@link Clock#system(ZoneId) system clock} to obtain the
* current date-time. Specifying the time-zone avoids dependence on the
* default time-zone. The offset will be calculated from the specified
* time-zone.
*
* Using this method will prevent the ability to use an alternate clock for
* testing because the clock is hard-coded.
*
* @param zone
* the zone ID to use, not null
* @return the current date-time using the system clock, not null
*/
@Nonnull
public static XMLOffsetDateTime now (@Nonnull final ZoneId zone)
{
return now (Clock.system (zone));
}
/**
* Obtains the current date-time from the specified clock.
*
* This will query the specified clock to obtain the current date-time. The
* offset will be calculated from the time-zone in the clock.
*
* Using this method allows the use of an alternate clock for testing. The
* alternate clock may be introduced using {@link Clock dependency injection}.
*
* @param clock
* the clock to use, not null
* @return the current date-time, not null
*/
@Nonnull
public static XMLOffsetDateTime now (@Nonnull final Clock clock)
{
Objects.requireNonNull (clock, "clock");
final Instant now = clock.instant ();
return ofInstant (now, clock.getZone ().getRules ().getOffset (now));
}
/**
* Obtains an instance of {@code XMLOffsetDateTime} from a date and a time.
*
* This creates an offset date-time with the specified local date, time and no
* zone offset.
*
* @param date
* the local date, not null
* @param time
* the local time, not null
* @return the offset date-time, not null
* @since 11.0.0
*/
@Nonnull
public static XMLOffsetDateTime of (@Nonnull final LocalDate date, @Nonnull final LocalTime time)
{
return new XMLOffsetDateTime (LocalDateTime.of (date, time), null);
}
/**
* Obtains an instance of {@code XMLOffsetDateTime} from a date, time and
* offset.
*
* This creates an offset date-time with the specified local date, time and
* offset.
*
* @param date
* the local date, not null
* @param time
* the local time, not null
* @param offset
* the zone offset, not null
* @return the offset date-time, not null
*/
@Nonnull
public static XMLOffsetDateTime of (@Nonnull final LocalDate date, @Nonnull final LocalTime time, @Nullable final ZoneOffset offset)
{
return new XMLOffsetDateTime (LocalDateTime.of (date, time), offset);
}
/**
* Obtains an instance of {@code XMLOffsetDateTime} from a date-time.
*
* This creates an offset date-time with the specified local date-time and no
* zone offset.
*
* @param dateTime
* the local date-time, not null
* @return the offset date-time, never null
* @since 11.0.0
*/
@Nonnull
public static XMLOffsetDateTime of (@Nonnull final LocalDateTime dateTime)
{
return new XMLOffsetDateTime (dateTime, null);
}
/**
* Obtains an instance of {@code XMLOffsetDateTime} from a date-time and
* offset.
*
* This creates an offset date-time with the specified local date-time and
* offset.
*
* @param dateTime
* the local date-time, not null
* @param offset
* the zone offset, not null
* @return the offset date-time, never null
*/
@Nonnull
public static XMLOffsetDateTime of (@Nonnull final LocalDateTime dateTime, @Nullable final ZoneOffset offset)
{
return new XMLOffsetDateTime (dateTime, offset);
}
@Nonnull
public static XMLOffsetDateTime of (@Nonnull final OffsetDateTime ofsDateTime)
{
return new XMLOffsetDateTime (ofsDateTime.toLocalDateTime (), ofsDateTime.getOffset ());
}
/**
* Obtains an instance of {@code XMLOffsetDateTime} from a year, month, day,
* hour, minute, second, nanosecond and offset.
*
* This creates an offset date-time with the seven specified fields.
*
* This method exists primarily for writing test cases. Non test-code will
* typically use other methods to create an offset time. {@code LocalDateTime}
* has five additional convenience variants of the equivalent factory method
* taking fewer arguments. They are not provided here to reduce the footprint
* of the API.
*
* @param year
* the year to represent, from MIN_YEAR to MAX_YEAR
* @param month
* the month-of-year to represent, from 1 (January) to 12 (December)
* @param dayOfMonth
* the day-of-month to represent, from 1 to 31
* @param hour
* the hour-of-day to represent, from 0 to 23
* @param minute
* the minute-of-hour to represent, from 0 to 59
* @param second
* the second-of-minute to represent, from 0 to 59
* @param nanoOfSecond
* the nano-of-second to represent, from 0 to 999,999,999
* @param offset
* the zone offset, not null
* @return the offset date-time, not null
* @throws DateTimeException
* if the value of any field is out of range, or if the day-of-month
* is invalid for the month-year
*/
@Nonnull
public static XMLOffsetDateTime of (final int year,
final int month,
final int dayOfMonth,
final int hour,
final int minute,
final int second,
final int nanoOfSecond,
@Nullable final ZoneOffset offset)
{
final LocalDateTime dt = LocalDateTime.of (year, month, dayOfMonth, hour, minute, second, nanoOfSecond);
return new XMLOffsetDateTime (dt, offset);
}
/**
* Obtains an instance of {@code XMLOffsetDateTime} from an {@code Instant}
* and zone ID.
*
* This creates an offset date-time with the same instant as that specified.
* Finding the offset from UTC/Greenwich is simple as there is only one valid
* offset for each instant.
*
* @param instant
* the instant to create the date-time from, not null
* @param zone
* the time-zone, which may be an offset, not null
* @return the offset date-time, not null
* @throws DateTimeException
* if the result exceeds the supported range
*/
@Nonnull
public static XMLOffsetDateTime ofInstant (@Nonnull final Instant instant, @Nonnull final ZoneId zone)
{
Objects.requireNonNull (instant, "instant");
Objects.requireNonNull (zone, "zone");
final ZoneOffset offset = zone.getRules ().getOffset (instant);
final LocalDateTime ldt = LocalDateTime.ofEpochSecond (instant.getEpochSecond (), instant.getNano (), offset);
return new XMLOffsetDateTime (ldt, offset);
}
/**
* Obtains an instance of {@code XMLOffsetDateTime} from a temporal object.
*
* This obtains an offset date-time based on the specified temporal. A
* {@code TemporalAccessor} represents an arbitrary set of date and time
* information, which this factory converts to an instance of
* {@code XMLOffsetDateTime}.
*
* The conversion will first obtain a {@code ZoneOffset} from the temporal
* object. It will then try to obtain a {@code LocalDateTime}, falling back to
* an {@code Instant} if necessary. The result will be the combination of
* {@code ZoneOffset} with either with {@code LocalDateTime} or
* {@code Instant}. Implementations are permitted to perform optimizations
* such as accessing those fields that are equivalent to the relevant objects.
*
* This method matches the signature of the functional interface
* {@link TemporalQuery} allowing it to be used as a query via method
* reference, {@code XMLOffsetDateTime::from}.
*
* @param temporal
* the temporal object to convert, not null
* @return the offset date-time, not null
* @throws DateTimeException
* if unable to convert to an {@code XMLOffsetDateTime}
*/
@Nonnull
public static XMLOffsetDateTime from (@Nonnull final TemporalAccessor temporal)
{
if (temporal instanceof XMLOffsetDateTime)
return (XMLOffsetDateTime) temporal;
try
{
final LocalDate date = temporal.query (TemporalQueries.localDate ());
final LocalTime time = temporal.query (TemporalQueries.localTime ());
// Optional offset
ZoneOffset offset;
try
{
offset = ZoneOffset.from (temporal);
}
catch (final DateTimeException ex)
{
offset = null;
}
if (date != null && time != null)
return XMLOffsetDateTime.of (date, time, offset);
final Instant instant = Instant.from (temporal);
return XMLOffsetDateTime.ofInstant (instant, offset);
}
catch (final DateTimeException ex)
{
throw new DateTimeException ("Unable to obtain XMLOffsetDateTime from TemporalAccessor: " +
temporal +
" of type " +
temporal.getClass ().getName (),
ex);
}
}
/**
* Obtains an instance of {@code XMLOffsetDateTime} from a text string such as
* {@code 2007-12-03T10:15:30+01:00}.
*
* The string must represent a valid date-time and is parsed using
* {@link java.time.format.DateTimeFormatter#ISO_DATE_TIME}.
*
* @param text
* the text to parse such as "2007-12-03T10:15:30+01:00", not
* null.
* @return the parsed offset date-time, not null
* @throws DateTimeParseException
* if the text cannot be parsed
*/
@Nonnull
public static XMLOffsetDateTime parse (@Nonnull final CharSequence text)
{
return parse (text, DateTimeFormatter.ISO_DATE_TIME);
}
/**
* Obtains an instance of {@code XMLOffsetDateTime} from a text string using a
* specific formatter.
*
* The text is parsed using the formatter, returning a date-time.
*
* @param text
* the text to parse, not null
* @param formatter
* the formatter to use, not null
* @return the parsed offset date-time, not null
* @throws DateTimeParseException
* if the text cannot be parsed
*/
@Nonnull
public static XMLOffsetDateTime parse (@Nonnull final CharSequence text, @Nonnull final DateTimeFormatter formatter)
{
Objects.requireNonNull (formatter, "formatter");
return formatter.parse (text, XMLOffsetDateTime::from);
}
/**
* Constructor.
*
* @param dateTime
* the local date-time, not null
* @param offset
* the zone offset, maybe null
*/
protected XMLOffsetDateTime (@Nonnull final LocalDateTime dateTime, @Nullable final ZoneOffset offset)
{
m_aDateTime = Objects.requireNonNull (dateTime, "dateTime");
m_aOffset = offset;
}
/**
* Returns a new date-time based on this one, returning {@code this} where
* possible.
*
* @param dateTime
* the date-time to create with, not null
* @param offset
* the zone offset to create with, maybe null
* @return {@code this} or the newly created value
*/
@Nonnull
protected XMLOffsetDateTime with (@Nonnull final LocalDateTime dateTime, @Nullable final ZoneOffset offset)
{
if (m_aDateTime == dateTime && EqualsHelper.equals (m_aOffset, offset))
return this;
return new XMLOffsetDateTime (dateTime, offset);
}
/**
* Checks if the specified field is supported.
*
* This checks if this date-time can be queried for the specified field. If
* false, then calling the {@link #range(TemporalField) range},
* {@link #get(TemporalField) get} and {@link #with(TemporalField, long)}
* methods will throw an exception.
*
* If the field is a {@link ChronoField} then the query is implemented here.
* The supported fields are:
*
* - {@code NANO_OF_SECOND}
*
- {@code NANO_OF_DAY}
*
- {@code MICRO_OF_SECOND}
*
- {@code MICRO_OF_DAY}
*
- {@code MILLI_OF_SECOND}
*
- {@code MILLI_OF_DAY}
*
- {@code SECOND_OF_MINUTE}
*
- {@code SECOND_OF_DAY}
*
- {@code MINUTE_OF_HOUR}
*
- {@code MINUTE_OF_DAY}
*
- {@code HOUR_OF_AMPM}
*
- {@code CLOCK_HOUR_OF_AMPM}
*
- {@code HOUR_OF_DAY}
*
- {@code CLOCK_HOUR_OF_DAY}
*
- {@code AMPM_OF_DAY}
*
- {@code DAY_OF_WEEK}
*
- {@code ALIGNED_DAY_OF_WEEK_IN_MONTH}
*
- {@code ALIGNED_DAY_OF_WEEK_IN_YEAR}
*
- {@code DAY_OF_MONTH}
*
- {@code DAY_OF_YEAR}
*
- {@code EPOCH_DAY}
*
- {@code ALIGNED_WEEK_OF_MONTH}
*
- {@code ALIGNED_WEEK_OF_YEAR}
*
- {@code MONTH_OF_YEAR}
*
- {@code PROLEPTIC_MONTH}
*
- {@code YEAR_OF_ERA}
*
- {@code YEAR}
*
- {@code ERA}
*
- {@code INSTANT_SECONDS}
*
- {@code OFFSET_SECONDS}
*
* All other {@code ChronoField} instances will return false.
*
* If the field is not a {@code ChronoField}, then the result of this method
* is obtained by invoking
* {@code TemporalField.isSupportedBy(TemporalAccessor)} passing {@code this}
* as the argument. Whether the field is supported is determined by the field.
*
* @param field
* the field to check, null returns false
* @return true if the field is supported on this date-time, false if not
*/
@Override
public boolean isSupported (@Nullable final TemporalField field)
{
return field instanceof ChronoField || (field != null && field.isSupportedBy (this));
}
/**
* Checks if the specified unit is supported.
*
* This checks if the specified unit can be added to, or subtracted from, this
* date-time. If false, then calling the {@link #plus(long, TemporalUnit)} and
* {@link #minus(long, TemporalUnit) minus} methods will throw an exception.
*
* If the unit is a {@link ChronoUnit} then the query is implemented here. The
* supported units are:
*
* - {@code NANOS}
*
- {@code MICROS}
*
- {@code MILLIS}
*
- {@code SECONDS}
*
- {@code MINUTES}
*
- {@code HOURS}
*
- {@code HALF_DAYS}
*
- {@code DAYS}
*
- {@code WEEKS}
*
- {@code MONTHS}
*
- {@code YEARS}
*
- {@code DECADES}
*
- {@code CENTURIES}
*
- {@code MILLENNIA}
*
- {@code ERAS}
*
* All other {@code ChronoUnit} instances will return false.
*
* If the unit is not a {@code ChronoUnit}, then the result of this method is
* obtained by invoking {@code TemporalUnit.isSupportedBy(Temporal)} passing
* {@code this} as the argument. Whether the unit is supported is determined
* by the unit.
*
* @param unit
* the unit to check, null returns false
* @return true if the unit can be added/subtracted, false if not
*/
@Override // override for Javadoc
public boolean isSupported (@Nullable final TemporalUnit unit)
{
if (unit instanceof ChronoUnit)
return unit != FOREVER;
return unit != null && unit.isSupportedBy (this);
}
/**
* Gets the range of valid values for the specified field.
*
* The range object expresses the minimum and maximum valid values for a
* field. This date-time is used to enhance the accuracy of the returned
* range. If it is not possible to return the range, because the field is not
* supported or for some other reason, an exception is thrown.
*
* If the field is a {@link ChronoField} then the query is implemented here.
* The {@link #isSupported(TemporalField) supported fields} will return
* appropriate range instances. All other {@code ChronoField} instances will
* throw an {@code UnsupportedTemporalTypeException}.
*
* If the field is not a {@code ChronoField}, then the result of this method
* is obtained by invoking
* {@code TemporalField.rangeRefinedBy(TemporalAccessor)} passing {@code this}
* as the argument. Whether the range can be obtained is determined by the
* field.
*
* @param field
* the field to query the range for, not null
* @return the range of valid values for the field, not null
* @throws DateTimeException
* if the range for the field cannot be obtained
* @throws UnsupportedTemporalTypeException
* if the field is not supported
*/
@Override
@Nonnull
public ValueRange range (@Nonnull final TemporalField field)
{
if (field instanceof ChronoField)
{
if (field == INSTANT_SECONDS || field == OFFSET_SECONDS)
return field.range ();
return m_aDateTime.range (field);
}
return field.rangeRefinedBy (this);
}
/**
* Gets the value of the specified field from this date-time as an
* {@code int}.
*
* This queries this date-time for the value of the specified field. The
* returned value will always be within the valid range of values for the
* field. If it is not possible to return the value, because the field is not
* supported or for some other reason, an exception is thrown.
*
* If the field is a {@link ChronoField} then the query is implemented here.
* The {@link #isSupported(TemporalField) supported fields} will return valid
* values based on this date-time, except {@code NANO_OF_DAY},
* {@code MICRO_OF_DAY}, {@code EPOCH_DAY}, {@code PROLEPTIC_MONTH} and
* {@code INSTANT_SECONDS} which are too large to fit in an {@code int} and
* throw a {@code DateTimeException}. All other {@code ChronoField} instances
* will throw an {@code UnsupportedTemporalTypeException}.
*
* If the field is not a {@code ChronoField}, then the result of this method
* is obtained by invoking {@code TemporalField.getFrom(TemporalAccessor)}
* passing {@code this} as the argument. Whether the value can be obtained,
* and what the value represents, is determined by the field.
*
* @param field
* the field to get, not null
* @return the value for the field
* @throws DateTimeException
* if a value for the field cannot be obtained or the value is outside
* the range of valid values for the field
* @throws UnsupportedTemporalTypeException
* if the field is not supported or the range of values exceeds an
* {@code int}
* @throws ArithmeticException
* if numeric overflow occurs
*/
@Override
public int get (@Nonnull final TemporalField field)
{
if (field instanceof ChronoField)
{
switch ((ChronoField) field)
{
case INSTANT_SECONDS:
throw new UnsupportedTemporalTypeException ("Invalid field 'InstantSeconds' for get() method, use getLong() instead");
case OFFSET_SECONDS:
return m_aOffset == null ? 0 : m_aOffset.getTotalSeconds ();
}
return m_aDateTime.get (field);
}
return Temporal.super.get (field);
}
/**
* Gets the value of the specified field from this date-time as a
* {@code long}.
*
* This queries this date-time for the value of the specified field. If it is
* not possible to return the value, because the field is not supported or for
* some other reason, an exception is thrown.
*
* If the field is a {@link ChronoField} then the query is implemented here.
* The {@link #isSupported(TemporalField) supported fields} will return valid
* values based on this date-time. All other {@code ChronoField} instances
* will throw an {@code UnsupportedTemporalTypeException}.
*
* If the field is not a {@code ChronoField}, then the result of this method
* is obtained by invoking {@code TemporalField.getFrom(TemporalAccessor)}
* passing {@code this} as the argument. Whether the value can be obtained,
* and what the value represents, is determined by the field.
*
* @param field
* the field to get, not null
* @return the value for the field
* @throws DateTimeException
* if a value for the field cannot be obtained
* @throws UnsupportedTemporalTypeException
* if the field is not supported
* @throws ArithmeticException
* if numeric overflow occurs
*/
@Override
public long getLong (@Nonnull final TemporalField field)
{
if (field instanceof ChronoField)
{
switch ((ChronoField) field)
{
case INSTANT_SECONDS:
return toEpochSecond ();
case OFFSET_SECONDS:
return m_aOffset != null ? m_aOffset.getTotalSeconds () : 0;
}
return m_aDateTime.getLong (field);
}
return field.getFrom (this);
}
/**
* Gets the zone offset, such as '+01:00'.
*
* This is the offset of the local date-time from UTC/Greenwich.
*
* @return the zone offset, may be null
*/
@Nullable
public ZoneOffset getOffset ()
{
return m_aOffset;
}
/**
* @return true if this date has a zone offset,
* false if not.
*/
public boolean hasOffset ()
{
return m_aOffset != null;
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified offset
* ensuring that the result has the same local date-time.
*
* This method returns an object with the same {@code LocalDateTime} and the
* specified {@code ZoneOffset}. No calculation is needed or performed. For
* example, if this time represents {@code 2007-12-03T10:30+02:00} and the
* offset specified is {@code +03:00}, then this method will return
* {@code 2007-12-03T10:30+03:00}.
*
* To take into account the difference between the offsets, and adjust the
* time fields, use {@link #withOffsetSameInstant}.
*
* This instance is immutable and unaffected by this method call.
*
* @param offset
* the zone offset to change to, not null
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* requested offset, not null
*/
@Nonnull
public XMLOffsetDateTime withOffsetSameLocal (@Nullable final ZoneOffset offset)
{
return with (m_aDateTime, offset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified offset
* ensuring that the result is at the same instant.
*
* This method returns an object with the specified {@code ZoneOffset} and a
* {@code LocalDateTime} adjusted by the difference between the two offsets.
* This will result in the old and new objects representing the same instant.
* This is useful for finding the local time in a different offset. For
* example, if this time represents {@code 2007-12-03T10:30+02:00} and the
* offset specified is {@code +03:00}, then this method will return
* {@code 2007-12-03T11:30+03:00}.
*
* To change the offset without adjusting the local time use
* {@link #withOffsetSameLocal}.
*
* This instance is immutable and unaffected by this method call.
*
* @param offset
* the zone offset to change to, not null
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* requested offset, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime withOffsetSameInstant (@Nullable final ZoneOffset offset)
{
if (EqualsHelper.equals (offset, m_aOffset))
return this;
final int difference = (offset != null ? offset.getTotalSeconds () : 0) - (m_aOffset != null ? m_aOffset.getTotalSeconds () : 0);
final LocalDateTime adjusted = m_aDateTime.plusSeconds (difference);
return new XMLOffsetDateTime (adjusted, offset);
}
/**
* Gets the {@code LocalDateTime} part of this date-time.
*
* This returns a {@code LocalDateTime} with the same year, month, day and
* time as this date-time.
*
* @return the local date-time part of this date-time, not null
*/
@Nonnull
public LocalDateTime toLocalDateTime ()
{
return m_aDateTime;
}
/**
* Gets the {@code LocalDate} part of this date-time.
*
* This returns a {@code LocalDate} with the same year, month and day as this
* date-time.
*
* @return the date part of this date-time, not null
*/
@Nonnull
public LocalDate toLocalDate ()
{
return m_aDateTime.toLocalDate ();
}
/**
* Gets the year field.
*
* This method returns the primitive {@code int} value for the year.
*
* The year returned by this method is proleptic as per {@code get(YEAR)}. To
* obtain the year-of-era, use {@code get(YEAR_OF_ERA)}.
*
* @return the year, from MIN_YEAR to MAX_YEAR
*/
public int getYear ()
{
return m_aDateTime.getYear ();
}
/**
* Gets the month-of-year field from 1 to 12.
*
* This method returns the month as an {@code int} from 1 to 12. Application
* code is frequently clearer if the enum {@link Month} is used by calling
* {@link #getMonth()}.
*
* @return the month-of-year, from 1 to 12
* @see #getMonth()
*/
public int getMonthValue ()
{
return m_aDateTime.getMonthValue ();
}
/**
* Gets the month-of-year field using the {@code Month} enum.
*
* This method returns the enum {@link Month} for the month. This avoids
* confusion as to what {@code int} values mean. If you need access to the
* primitive {@code int} value then the enum provides the
* {@link Month#getValue() int value}.
*
* @return the month-of-year, not null
* @see #getMonthValue()
*/
@Nonnull
public Month getMonth ()
{
return m_aDateTime.getMonth ();
}
/**
* Gets the day-of-month field.
*
* This method returns the primitive {@code int} value for the day-of-month.
*
* @return the day-of-month, from 1 to 31
*/
public int getDayOfMonth ()
{
return m_aDateTime.getDayOfMonth ();
}
/**
* Gets the day-of-year field.
*
* This method returns the primitive {@code int} value for the day-of-year.
*
* @return the day-of-year, from 1 to 365, or 366 in a leap year
*/
public int getDayOfYear ()
{
return m_aDateTime.getDayOfYear ();
}
/**
* Gets the day-of-week field, which is an enum {@code DayOfWeek}.
*
* This method returns the enum {@link DayOfWeek} for the day-of-week. This
* avoids confusion as to what {@code int} values mean. If you need access to
* the primitive {@code int} value then the enum provides the
* {@link DayOfWeek#getValue() int value}.
*
* Additional information can be obtained from the {@code DayOfWeek}. This
* includes textual names of the values.
*
* @return the day-of-week, not null
*/
@Nonnull
public DayOfWeek getDayOfWeek ()
{
return m_aDateTime.getDayOfWeek ();
}
/**
* Gets the {@code LocalTime} part of this date-time.
*
* This returns a {@code LocalTime} with the same hour, minute, second and
* nanosecond as this date-time.
*
* @return the time part of this date-time, not null
*/
@Nonnull
public LocalTime toLocalTime ()
{
return m_aDateTime.toLocalTime ();
}
/**
* Gets the hour-of-day field.
*
* @return the hour-of-day, from 0 to 23
*/
public int getHour ()
{
return m_aDateTime.getHour ();
}
/**
* Gets the minute-of-hour field.
*
* @return the minute-of-hour, from 0 to 59
*/
public int getMinute ()
{
return m_aDateTime.getMinute ();
}
/**
* Gets the second-of-minute field.
*
* @return the second-of-minute, from 0 to 59
*/
public int getSecond ()
{
return m_aDateTime.getSecond ();
}
/**
* Gets the nano-of-second field.
*
* @return the nano-of-second, from 0 to 999,999,999
*/
public int getNano ()
{
return m_aDateTime.getNano ();
}
/**
* Returns an adjusted copy of this date-time.
*
* This returns an {@code XMLOffsetDateTime}, based on this one, with the
* date-time adjusted. The adjustment takes place using the specified adjuster
* strategy object. Read the documentation of the adjuster to understand what
* adjustment will be made.
*
* A simple adjuster might simply set the one of the fields, such as the year
* field. A more complex adjuster might set the date to the last day of the
* month. A selection of common adjustments is provided in
* {@link java.time.temporal.TemporalAdjusters TemporalAdjusters}. These
* include finding the "last day of the month" and "next Wednesday". Key
* date-time classes also implement the {@code TemporalAdjuster} interface,
* such as {@link Month} and {@link java.time.MonthDay MonthDay}. The adjuster
* is responsible for handling special cases, such as the varying lengths of
* month and leap years.
*
* For example this code returns a date on the last day of July:
*
*
* import static java.time.Month.*;
* import static java.time.temporal.TemporalAdjusters.*;
*
* result = offsetDateTime.with(JULY).with(lastDayOfMonth());
*
*
* The classes {@link LocalDate}, {@link LocalTime} and {@link ZoneOffset}
* implement {@code TemporalAdjuster}, thus this method can be used to change
* the date, time or offset:
*
*
* result = offsetDateTime.with (date);
* result = offsetDateTime.with (time);
* result = offsetDateTime.with (offset);
*
*
* The result of this method is obtained by invoking the
* {@link TemporalAdjuster#adjustInto(Temporal)} method on the specified
* adjuster passing {@code this} as the argument.
*
* This instance is immutable and unaffected by this method call.
*
* @param adjuster
* the adjuster to use, not null
* @return an {@code XMLOffsetDateTime} based on {@code this} with the
* adjustment made, not null
* @throws DateTimeException
* if the adjustment cannot be made
* @throws ArithmeticException
* if numeric overflow occurs
*/
@Override
@Nonnull
public XMLOffsetDateTime with (@Nonnull final TemporalAdjuster adjuster)
{
// optimizations
if (adjuster instanceof LocalDate || adjuster instanceof LocalTime || adjuster instanceof LocalDateTime)
return with (m_aDateTime.with (adjuster), m_aOffset);
if (adjuster instanceof Instant)
return ofInstant ((Instant) adjuster, m_aOffset);
if (adjuster instanceof ZoneOffset)
return with (m_aDateTime, (ZoneOffset) adjuster);
if (adjuster instanceof XMLOffsetDateTime)
return (XMLOffsetDateTime) adjuster;
return (XMLOffsetDateTime) adjuster.adjustInto (this);
}
/**
* Returns a copy of this date-time with the specified field set to a new
* value.
*
* This returns an {@code XMLOffsetDateTime}, based on this one, with the
* value for the specified field changed. This can be used to change any
* supported field, such as the year, month or day-of-month. If it is not
* possible to set the value, because the field is not supported or for some
* other reason, an exception is thrown.
*
* In some cases, changing the specified field can cause the resulting
* date-time to become invalid, such as changing the month from 31st January
* to February would make the day-of-month invalid. In cases like this, the
* field is responsible for resolving the date. Typically it will choose the
* previous valid date, which would be the last valid day of February in this
* example.
*
* If the field is a {@link ChronoField} then the adjustment is implemented
* here.
*
* The {@code INSTANT_SECONDS} field will return a date-time with the
* specified instant. The offset and nano-of-second are unchanged. If the new
* instant value is outside the valid range then a {@code DateTimeException}
* will be thrown.
*
* The {@code OFFSET_SECONDS} field will return a date-time with the specified
* offset. The local date-time is unaltered. If the new offset value is
* outside the valid range then a {@code DateTimeException} will be thrown.
*
* The other {@link #isSupported(TemporalField) supported fields} will behave
* as per the matching method on
* {@link LocalDateTime#with(TemporalField, long) LocalDateTime}. In this
* case, the offset is not part of the calculation and will be unchanged.
*
* All other {@code ChronoField} instances will throw an
* {@code UnsupportedTemporalTypeException}.
*
* If the field is not a {@code ChronoField}, then the result of this method
* is obtained by invoking {@code TemporalField.adjustInto(Temporal, long)}
* passing {@code this} as the argument. In this case, the field determines
* whether and how to adjust the instant.
*
* This instance is immutable and unaffected by this method call.
*
* @param field
* the field to set in the result, not null
* @param newValue
* the new value of the field in the result
* @return an {@code XMLOffsetDateTime} based on {@code this} with the
* specified field set, not null
* @throws DateTimeException
* if the field cannot be set
* @throws UnsupportedTemporalTypeException
* if the field is not supported
* @throws ArithmeticException
* if numeric overflow occurs
*/
@Override
@Nonnull
public XMLOffsetDateTime with (@Nonnull final TemporalField field, final long newValue)
{
if (field instanceof ChronoField)
{
final ChronoField f = (ChronoField) field;
switch (f)
{
case INSTANT_SECONDS:
return ofInstant (Instant.ofEpochSecond (newValue, getNano ()), m_aOffset);
case OFFSET_SECONDS:
return with (m_aDateTime, ZoneOffset.ofTotalSeconds (f.checkValidIntValue (newValue)));
}
return with (m_aDateTime.with (field, newValue), m_aOffset);
}
return field.adjustInto (this, newValue);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the year altered.
*
* The time and offset do not affect the calculation and will be the same in
* the result. If the day-of-month is invalid for the year, it will be changed
* to the last valid day of the month.
*
* This instance is immutable and unaffected by this method call.
*
* @param year
* the year to set in the result, from MIN_YEAR to MAX_YEAR
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* requested year, not null
* @throws DateTimeException
* if the year value is invalid
*/
@Nonnull
public XMLOffsetDateTime withYear (final int year)
{
return with (m_aDateTime.withYear (year), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the month-of-year
* altered.
*
* The time and offset do not affect the calculation and will be the same in
* the result. If the day-of-month is invalid for the year, it will be changed
* to the last valid day of the month.
*
* This instance is immutable and unaffected by this method call.
*
* @param month
* the month-of-year to set in the result, from 1 (January) to 12
* (December)
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* requested month, not null
* @throws DateTimeException
* if the month-of-year value is invalid
*/
@Nonnull
public XMLOffsetDateTime withMonth (final int month)
{
return with (m_aDateTime.withMonth (month), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the day-of-month
* altered.
*
* If the resulting {@code XMLOffsetDateTime} is invalid, an exception is
* thrown. The time and offset do not affect the calculation and will be the
* same in the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param dayOfMonth
* the day-of-month to set in the result, from 1 to 28-31
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* requested day, not null
* @throws DateTimeException
* if the day-of-month value is invalid, or if the day-of-month is
* invalid for the month-year
*/
@Nonnull
public XMLOffsetDateTime withDayOfMonth (final int dayOfMonth)
{
return with (m_aDateTime.withDayOfMonth (dayOfMonth), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the day-of-year
* altered.
*
* The time and offset do not affect the calculation and will be the same in
* the result. If the resulting {@code XMLOffsetDateTime} is invalid, an
* exception is thrown.
*
* This instance is immutable and unaffected by this method call.
*
* @param dayOfYear
* the day-of-year to set in the result, from 1 to 365-366
* @return an {@code XMLOffsetDateTime} based on this date with the requested
* day, not null
* @throws DateTimeException
* if the day-of-year value is invalid, or if the day-of-year is
* invalid for the year
*/
@Nonnull
public XMLOffsetDateTime withDayOfYear (final int dayOfYear)
{
return with (m_aDateTime.withDayOfYear (dayOfYear), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the hour-of-day
* altered.
*
* The date and offset do not affect the calculation and will be the same in
* the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param hour
* the hour-of-day to set in the result, from 0 to 23
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* requested hour, not null
* @throws DateTimeException
* if the hour value is invalid
*/
@Nonnull
public XMLOffsetDateTime withHour (final int hour)
{
return with (m_aDateTime.withHour (hour), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the minute-of-hour
* altered.
*
* The date and offset do not affect the calculation and will be the same in
* the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param minute
* the minute-of-hour to set in the result, from 0 to 59
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* requested minute, not null
* @throws DateTimeException
* if the minute value is invalid
*/
@Nonnull
public XMLOffsetDateTime withMinute (final int minute)
{
return with (m_aDateTime.withMinute (minute), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the second-of-minute
* altered.
*
* The date and offset do not affect the calculation and will be the same in
* the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param second
* the second-of-minute to set in the result, from 0 to 59
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* requested second, not null
* @throws DateTimeException
* if the second value is invalid
*/
@Nonnull
public XMLOffsetDateTime withSecond (final int second)
{
return with (m_aDateTime.withSecond (second), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the nano-of-second
* altered.
*
* The date and offset do not affect the calculation and will be the same in
* the result.
*
* This instance is immutable and unaffected by this method call.
*
* @param nanoOfSecond
* the nano-of-second to set in the result, from 0 to 999,999,999
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* requested nanosecond, not null
* @throws DateTimeException
* if the nano value is invalid
*/
@Nonnull
public XMLOffsetDateTime withNano (final int nanoOfSecond)
{
return with (m_aDateTime.withNano (nanoOfSecond), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the time truncated.
*
* Truncation returns a copy of the original date-time with fields smaller
* than the specified unit set to zero. For example, truncating with the
* {@link ChronoUnit#MINUTES minutes} unit will set the second-of-minute and
* nano-of-second field to zero.
*
* The unit must have a {@linkplain TemporalUnit#getDuration() duration} that
* divides into the length of a standard day without remainder. This includes
* all supplied time units on {@link ChronoUnit} and {@link ChronoUnit#DAYS
* DAYS}. Other units throw an exception.
*
* The offset does not affect the calculation and will be the same in the
* result.
*
* This instance is immutable and unaffected by this method call.
*
* @param unit
* the unit to truncate to, not null
* @return an {@code XMLOffsetDateTime} based on this date-time with the time
* truncated, not null
* @throws DateTimeException
* if unable to truncate
* @throws UnsupportedTemporalTypeException
* if the unit is not supported
*/
@Nonnull
public XMLOffsetDateTime truncatedTo (@Nonnull final TemporalUnit unit)
{
return with (m_aDateTime.truncatedTo (unit), m_aOffset);
}
/**
* Returns a copy of this date-time with the specified amount added.
*
* This returns an {@code XMLOffsetDateTime}, based on this one, with the
* specified amount added. The amount is typically {@link Period} or
* {@link Duration} but may be any other type implementing the
* {@link TemporalAmount} interface.
*
* The calculation is delegated to the amount object by calling
* {@link TemporalAmount#addTo(Temporal)}. The amount implementation is free
* to implement the addition in any way it wishes, however it typically calls
* back to {@link #plus(long, TemporalUnit)}. Consult the documentation of the
* amount implementation to determine if it can be successfully added.
*
* This instance is immutable and unaffected by this method call.
*
* @param amountToAdd
* the amount to add, not null
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* addition made, not null
* @throws DateTimeException
* if the addition cannot be made
* @throws ArithmeticException
* if numeric overflow occurs
*/
@Override
public XMLOffsetDateTime plus (@Nonnull final TemporalAmount amountToAdd)
{
return (XMLOffsetDateTime) amountToAdd.addTo (this);
}
/**
* Returns a copy of this date-time with the specified amount added.
*
* This returns an {@code XMLOffsetDateTime}, based on this one, with the
* amount in terms of the unit added. If it is not possible to add the amount,
* because the unit is not supported or for some other reason, an exception is
* thrown.
*
* If the field is a {@link ChronoUnit} then the addition is implemented by
* {@link LocalDateTime#plus(long, TemporalUnit)}. The offset is not part of
* the calculation and will be unchanged in the result.
*
* If the field is not a {@code ChronoUnit}, then the result of this method is
* obtained by invoking {@code TemporalUnit.addTo(Temporal, long)} passing
* {@code this} as the argument. In this case, the unit determines whether and
* how to perform the addition.
*
* This instance is immutable and unaffected by this method call.
*
* @param amountToAdd
* the amount of the unit to add to the result, may be negative
* @param unit
* the unit of the amount to add, not null
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* specified amount added, not null
* @throws DateTimeException
* if the addition cannot be made
* @throws UnsupportedTemporalTypeException
* if the unit is not supported
* @throws ArithmeticException
* if numeric overflow occurs
*/
@Override
public XMLOffsetDateTime plus (final long amountToAdd, @Nonnull final TemporalUnit unit)
{
if (unit instanceof ChronoUnit)
return with (m_aDateTime.plus (amountToAdd, unit), m_aOffset);
return unit.addTo (this, amountToAdd);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of years added.
*
* This method adds the specified amount to the years field in three steps:
*
* - Add the input years to the year field
* - Check if the resulting date would be invalid
* - Adjust the day-of-month to the last valid day if necessary
*
*
* For example, 2008-02-29 (leap year) plus one year would result in the
* invalid date 2009-02-29 (standard year). Instead of returning an invalid
* result, the last valid day of the month, 2009-02-28, is selected instead.
*
* This instance is immutable and unaffected by this method call.
*
* @param years
* the years to add, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the years
* added, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime plusYears (final long years)
{
return with (m_aDateTime.plusYears (years), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of months added.
*
* This method adds the specified amount to the months field in three steps:
*
* - Add the input months to the month-of-year field
* - Check if the resulting date would be invalid
* - Adjust the day-of-month to the last valid day if necessary
*
*
* For example, 2007-03-31 plus one month would result in the invalid date
* 2007-04-31. Instead of returning an invalid result, the last valid day of
* the month, 2007-04-30, is selected instead.
*
* This instance is immutable and unaffected by this method call.
*
* @param months
* the months to add, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* months added, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime plusMonths (final long months)
{
return with (m_aDateTime.plusMonths (months), m_aOffset);
}
/**
* Returns a copy of this XMLOffsetDateTime with the specified number of weeks
* added.
*
* This method adds the specified amount in weeks to the days field
* incrementing the month and year fields as necessary to ensure the result
* remains valid. The result is only invalid if the maximum/minimum year is
* exceeded.
*
* For example, 2008-12-31 plus one week would result in 2009-01-07.
*
* This instance is immutable and unaffected by this method call.
*
* @param weeks
* the weeks to add, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the weeks
* added, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime plusWeeks (final long weeks)
{
return with (m_aDateTime.plusWeeks (weeks), m_aOffset);
}
/**
* Returns a copy of this XMLOffsetDateTime with the specified number of days
* added.
*
* This method adds the specified amount to the days field incrementing the
* month and year fields as necessary to ensure the result remains valid. The
* result is only invalid if the maximum/minimum year is exceeded.
*
* For example, 2008-12-31 plus one day would result in 2009-01-01.
*
* This instance is immutable and unaffected by this method call.
*
* @param days
* the days to add, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the days
* added, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime plusDays (final long days)
{
return with (m_aDateTime.plusDays (days), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of hours added.
*
* This instance is immutable and unaffected by this method call.
*
* @param hours
* the hours to add, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the hours
* added, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime plusHours (final long hours)
{
return with (m_aDateTime.plusHours (hours), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of minutes added.
*
* This instance is immutable and unaffected by this method call.
*
* @param minutes
* the minutes to add, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* minutes added, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime plusMinutes (final long minutes)
{
return with (m_aDateTime.plusMinutes (minutes), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of seconds added.
*
* This instance is immutable and unaffected by this method call.
*
* @param seconds
* the seconds to add, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* seconds added, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime plusSeconds (final long seconds)
{
return with (m_aDateTime.plusSeconds (seconds), m_aOffset);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of nanoseconds added.
*
* This instance is immutable and unaffected by this method call.
*
* @param nanos
* the nanos to add, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* nanoseconds added, not null
* @throws DateTimeException
* if the unit cannot be added to this type
*/
@Nonnull
public XMLOffsetDateTime plusNanos (final long nanos)
{
return with (m_aDateTime.plusNanos (nanos), m_aOffset);
}
/**
* Returns a copy of this date-time with the specified amount subtracted.
*
* This returns an {@code XMLOffsetDateTime}, based on this one, with the
* specified amount subtracted. The amount is typically {@link Period} or
* {@link Duration} but may be any other type implementing the
* {@link TemporalAmount} interface.
*
* The calculation is delegated to the amount object by calling
* {@link TemporalAmount#subtractFrom(Temporal)}. The amount implementation is
* free to implement the subtraction in any way it wishes, however it
* typically calls back to {@link #minus(long, TemporalUnit)}. Consult the
* documentation of the amount implementation to determine if it can be
* successfully subtracted.
*
* This instance is immutable and unaffected by this method call.
*
* @param amountToSubtract
* the amount to subtract, not null
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* subtraction made, not null
* @throws DateTimeException
* if the subtraction cannot be made
* @throws ArithmeticException
* if numeric overflow occurs
*/
@Override
@Nonnull
public XMLOffsetDateTime minus (@Nonnull final TemporalAmount amountToSubtract)
{
return (XMLOffsetDateTime) amountToSubtract.subtractFrom (this);
}
/**
* Returns a copy of this date-time with the specified amount subtracted.
*
* This returns an {@code XMLOffsetDateTime}, based on this one, with the
* amount in terms of the unit subtracted. If it is not possible to subtract
* the amount, because the unit is not supported or for some other reason, an
* exception is thrown.
*
* This method is equivalent to {@link #plus(long, TemporalUnit)} with the
* amount negated. See that method for a full description of how addition, and
* thus subtraction, works.
*
* This instance is immutable and unaffected by this method call.
*
* @param amountToSubtract
* the amount of the unit to subtract from the result, may be negative
* @param unit
* the unit of the amount to subtract, not null
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* specified amount subtracted, not null
* @throws DateTimeException
* if the subtraction cannot be made
* @throws UnsupportedTemporalTypeException
* if the unit is not supported
* @throws ArithmeticException
* if numeric overflow occurs
*/
@Override
@Nonnull
public XMLOffsetDateTime minus (final long amountToSubtract, final TemporalUnit unit)
{
return amountToSubtract == Long.MIN_VALUE ? plus (Long.MAX_VALUE, unit).plus (1, unit) : plus (-amountToSubtract, unit);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of years subtracted.
*
* This method subtracts the specified amount from the years field in three
* steps:
*
* - Subtract the input years from the year field
* - Check if the resulting date would be invalid
* - Adjust the day-of-month to the last valid day if necessary
*
*
* For example, 2008-02-29 (leap year) minus one year would result in the
* invalid date 2009-02-29 (standard year). Instead of returning an invalid
* result, the last valid day of the month, 2009-02-28, is selected instead.
*
* This instance is immutable and unaffected by this method call.
*
* @param years
* the years to subtract, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the years
* subtracted, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime minusYears (final long years)
{
return years == Long.MIN_VALUE ? plusYears (Long.MAX_VALUE).plusYears (1) : plusYears (-years);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of months subtracted.
*
* This method subtracts the specified amount from the months field in three
* steps:
*
* - Subtract the input months from the month-of-year field
* - Check if the resulting date would be invalid
* - Adjust the day-of-month to the last valid day if necessary
*
*
* For example, 2007-03-31 minus one month would result in the invalid date
* 2007-04-31. Instead of returning an invalid result, the last valid day of
* the month, 2007-04-30, is selected instead.
*
* This instance is immutable and unaffected by this method call.
*
* @param months
* the months to subtract, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* months subtracted, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime minusMonths (final long months)
{
return months == Long.MIN_VALUE ? plusMonths (Long.MAX_VALUE).plusMonths (1) : plusMonths (-months);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of weeks subtracted.
*
* This method subtracts the specified amount in weeks from the days field
* decrementing the month and year fields as necessary to ensure the result
* remains valid. The result is only invalid if the maximum/minimum year is
* exceeded.
*
* For example, 2008-12-31 minus one week would result in 2009-01-07.
*
* This instance is immutable and unaffected by this method call.
*
* @param weeks
* the weeks to subtract, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the weeks
* subtracted, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime minusWeeks (final long weeks)
{
return weeks == Long.MIN_VALUE ? plusWeeks (Long.MAX_VALUE).plusWeeks (1) : plusWeeks (-weeks);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of days subtracted.
*
* This method subtracts the specified amount from the days field decrementing
* the month and year fields as necessary to ensure the result remains valid.
* The result is only invalid if the maximum/minimum year is exceeded.
*
* For example, 2008-12-31 minus one day would result in 2009-01-01.
*
* This instance is immutable and unaffected by this method call.
*
* @param days
* the days to subtract, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the days
* subtracted, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime minusDays (final long days)
{
return days == Long.MIN_VALUE ? plusDays (Long.MAX_VALUE).plusDays (1) : plusDays (-days);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of hours subtracted.
*
* This instance is immutable and unaffected by this method call.
*
* @param hours
* the hours to subtract, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the hours
* subtracted, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime minusHours (final long hours)
{
return hours == Long.MIN_VALUE ? plusHours (Long.MAX_VALUE).plusHours (1) : plusHours (-hours);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of minutes subtracted.
*
* This instance is immutable and unaffected by this method call.
*
* @param minutes
* the minutes to subtract, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* minutes subtracted, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime minusMinutes (final long minutes)
{
return minutes == Long.MIN_VALUE ? plusMinutes (Long.MAX_VALUE).plusMinutes (1) : plusMinutes (-minutes);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of seconds subtracted.
*
* This instance is immutable and unaffected by this method call.
*
* @param seconds
* the seconds to subtract, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* seconds subtracted, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime minusSeconds (final long seconds)
{
return seconds == Long.MIN_VALUE ? plusSeconds (Long.MAX_VALUE).plusSeconds (1) : plusSeconds (-seconds);
}
/**
* Returns a copy of this {@code XMLOffsetDateTime} with the specified number
* of nanoseconds subtracted.
*
* This instance is immutable and unaffected by this method call.
*
* @param nanos
* the nanos to subtract, may be negative
* @return an {@code XMLOffsetDateTime} based on this date-time with the
* nanoseconds subtracted, not null
* @throws DateTimeException
* if the result exceeds the supported date range
*/
@Nonnull
public XMLOffsetDateTime minusNanos (final long nanos)
{
return nanos == Long.MIN_VALUE ? plusNanos (Long.MAX_VALUE).plusNanos (1) : plusNanos (-nanos);
}
/**
* Queries this date-time using the specified query.
*
* This queries this date-time using the specified query strategy object. The
* {@code TemporalQuery} object defines the logic to be used to obtain the
* result. Read the documentation of the query to understand what the result
* of this method will be.
*
* The result of this method is obtained by invoking the
* {@link TemporalQuery#queryFrom(TemporalAccessor)} method on the specified
* query passing {@code this} as the argument.
*
* @param
* the type of the result
* @param query
* the query to invoke, not null
* @return the query result, null may be returned (defined by the query)
* @throws DateTimeException
* if unable to query (defined by the query)
* @throws ArithmeticException
* if numeric overflow occurs (defined by the query)
*/
@SuppressWarnings ("unchecked")
@Override
public R query (@Nonnull final TemporalQuery query)
{
if (query == TemporalQueries.offset () || query == TemporalQueries.zone ())
return (R) getOffsetOrDefault ();
if (query == TemporalQueries.zoneId ())
return null;
if (query == TemporalQueries.localDate ())
return (R) toLocalDate ();
if (query == TemporalQueries.localTime ())
return (R) toLocalTime ();
if (query == TemporalQueries.chronology ())
return (R) IsoChronology.INSTANCE;
if (query == TemporalQueries.precision ())
return (R) NANOS;
return Temporal.super.query (query);
}
/**
* Adjusts the specified temporal object to have the same offset, date and
* time as this object.
*
* This returns a temporal object of the same observable type as the input
* with the offset, date and time changed to be the same as this.
*
* The adjustment is equivalent to using
* {@link Temporal#with(TemporalField, long)} three times, passing
* {@link ChronoField#EPOCH_DAY}, {@link ChronoField#NANO_OF_DAY} and
* {@link ChronoField#OFFSET_SECONDS} as the fields.
*
* In most cases, it is clearer to reverse the calling pattern by using
* {@link Temporal#with(TemporalAdjuster)}:
*
*
* // these two lines are equivalent, but the second approach is recommended
* temporal = thisOffsetDateTime.adjustInto (temporal);
* temporal = temporal.with (thisOffsetDateTime);
*
*
* This instance is immutable and unaffected by this method call.
*
* @param temporal
* the target object to be adjusted, not null
* @return the adjusted object, not null
* @throws DateTimeException
* if unable to make the adjustment
* @throws ArithmeticException
* if numeric overflow occurs
*/
@Override
public Temporal adjustInto (@Nonnull final Temporal temporal)
{
// XMLOffsetDateTime is treated as three separate fields, not an instant
// this produces the most consistent set of results overall
// the offset is set after the date and time, as it is typically a small
// tweak to the result, with ZonedDateTime frequently ignoring the offset
return temporal.with (EPOCH_DAY, toLocalDate ().toEpochDay ())
.with (NANO_OF_DAY, toLocalTime ().toNanoOfDay ())
.with (OFFSET_SECONDS, m_aOffset != null ? m_aOffset.getTotalSeconds () : 0);
}
/**
* Calculates the amount of time until another date-time in terms of the
* specified unit.
*
* This calculates the amount of time between two {@code XMLOffsetDateTime}
* objects in terms of a single {@code TemporalUnit}. The start and end points
* are {@code this} and the specified date-time. The result will be negative
* if the end is before the start. For example, the amount in days between two
* date-times can be calculated using
* {@code startDateTime.until(endDateTime, DAYS)}.
*
* The {@code Temporal} passed to this method is converted to a
* {@code XMLOffsetDateTime} using {@link #from(TemporalAccessor)}. If the
* offset differs between the two date-times, the specified end date-time is
* normalized to have the same offset as this date-time.
*
* The calculation returns a whole number, representing the number of complete
* units between the two date-times. For example, the amount in months between
* 2012-06-15T00:00Z and 2012-08-14T23:59Z will only be one month as it is one
* minute short of two months.
*
* There are two equivalent ways of using this method. The first is to invoke
* this method. The second is to use
* {@link TemporalUnit#between(Temporal, Temporal)}:
*
*
* // these two lines are equivalent
* amount = start.until (end, MONTHS);
* amount = MONTHS.between (start, end);
*
*
* The choice should be made based on which makes the code more readable.
*
* The calculation is implemented in this method for {@link ChronoUnit}. The
* units {@code NANOS}, {@code MICROS}, {@code MILLIS}, {@code SECONDS},
* {@code MINUTES}, {@code HOURS} and {@code HALF_DAYS}, {@code DAYS},
* {@code WEEKS}, {@code MONTHS}, {@code YEARS}, {@code DECADES},
* {@code CENTURIES}, {@code MILLENNIA} and {@code ERAS} are supported. Other
* {@code ChronoUnit} values will throw an exception.
*
* If the unit is not a {@code ChronoUnit}, then the result of this method is
* obtained by invoking {@code TemporalUnit.between(Temporal, Temporal)}
* passing {@code this} as the first argument and the converted input temporal
* as the second argument.
*
* This instance is immutable and unaffected by this method call.
*
* @param endExclusive
* the end date, exclusive, which is converted to an
* {@code XMLOffsetDateTime}, not null
* @param unit
* the unit to measure the amount in, not null
* @return the amount of time between this date-time and the end date-time
* @throws DateTimeException
* if the amount cannot be calculated, or the end temporal cannot be
* converted to an {@code XMLOffsetDateTime}
* @throws UnsupportedTemporalTypeException
* if the unit is not supported
* @throws ArithmeticException
* if numeric overflow occurs
*/
@Override
public long until (@Nonnull final Temporal endExclusive, @Nonnull final TemporalUnit unit)
{
XMLOffsetDateTime end = XMLOffsetDateTime.from (endExclusive);
if (unit instanceof ChronoUnit)
{
end = end.withOffsetSameInstant (m_aOffset);
return m_aDateTime.until (end.m_aDateTime, unit);
}
return unit.between (this, end);
}
/**
* Formats this date-time using the specified formatter.
*
* This date-time will be passed to the formatter to produce a string.
*
* @param formatter
* the formatter to use, not null
* @return the formatted date-time string, not null
* @throws DateTimeException
* if an error occurs during printing
*/
@Nonnull
public String format (@Nonnull final DateTimeFormatter formatter)
{
Objects.requireNonNull (formatter, "formatter");
return formatter.format (this);
}
@Nonnull
protected ZoneOffset getOffsetOr (@Nonnull final Supplier aSupplier)
{
ZoneOffset ret = m_aOffset;
if (ret == null)
ret = aSupplier.get ();
return ret;
}
@Nonnull
protected ZoneOffset getOffsetOrDefault ()
{
return getOffsetOr ( () -> PDTConfig.getDefaultZoneId ().getRules ().getOffset (m_aDateTime));
}
@Nonnull
protected ZoneOffset getOffsetOrUTC ()
{
return getOffsetOr ( () -> ZoneOffset.UTC);
}
/**
* Combines this date-time with a time-zone to create a {@code ZonedDateTime}
* ensuring that the result has the same instant.
*
* This returns a {@code ZonedDateTime} formed from this date-time and the
* specified time-zone. This conversion will ignore the visible local
* date-time and use the underlying instant instead. This avoids any problems
* with local time-line gaps or overlaps. The result might have different
* values for fields such as hour, minute an even day.
*
* To attempt to retain the values of the fields, use
* {@link #atZoneSimilarLocal(ZoneId)}. To use the offset as the zone ID, use
* {@link #toZonedDateTime()}.
*
* @param zone
* the time-zone to use, not null
* @return the zoned date-time formed from this date-time, not null
*/
@Nonnull
public ZonedDateTime atZoneSameInstant (@Nonnull final ZoneId zone)
{
return ZonedDateTime.ofInstant (m_aDateTime, getOffsetOrDefault (), zone);
}
/**
* Combines this date-time with a time-zone to create a {@code ZonedDateTime}
* trying to keep the same local date and time.
*
* This returns a {@code ZonedDateTime} formed from this date-time and the
* specified time-zone. Where possible, the result will have the same local
* date-time as this object.
*
* Time-zone rules, such as daylight savings, mean that not every time on the
* local time-line exists. If the local date-time is in a gap or overlap
* according to the rules then a resolver is used to determine the resultant
* local time and offset. This method uses
* {@link ZonedDateTime#ofLocal(LocalDateTime, ZoneId, ZoneOffset)} to retain
* the offset from this instance if possible.
*
* Finer control over gaps and overlaps is available in two ways. If you
* simply want to use the later offset at overlaps then call
* {@link ZonedDateTime#withLaterOffsetAtOverlap()} immediately after this
* method.
*
* To create a zoned date-time at the same instant irrespective of the local
* time-line, use {@link #atZoneSameInstant(ZoneId)}. To use the offset as the
* zone ID, use {@link #toZonedDateTime()}.
*
* @param zone
* the time-zone to use, not null
* @return the zoned date-time formed from this date and the earliest valid
* time for the zone, not null
*/
@Nonnull
public ZonedDateTime atZoneSimilarLocal (@Nonnull final ZoneId zone)
{
return ZonedDateTime.ofLocal (m_aDateTime, zone, getOffsetOrDefault ());
}
/**
* Converts this date-time to an {@code OffsetTime}.
*
* This returns an offset time with the same local time and offset.
*
* @return an OffsetTime representing the time and offset, not null
*/
@Nonnull
public OffsetTime toOffsetTime ()
{
return OffsetTime.of (m_aDateTime.toLocalTime (), getOffsetOrDefault ());
}
/**
* Converts this date-time to an {@code XMLOffsetTime}.
*
* This returns an offset time with the same local time and offset.
*
* @return an XMLOffsetTime representing the time and offset, not null
*/
@Nonnull
public XMLOffsetTime toXMLOffsetTime ()
{
return XMLOffsetTime.of (m_aDateTime.toLocalTime (), m_aOffset);
}
@Nullable
public OffsetDate toOffsetDate ()
{
return OffsetDate.of (m_aDateTime.toLocalDate (), getOffsetOrDefault ());
}
@Nullable
public XMLOffsetDate toXMLOffsetDate ()
{
return XMLOffsetDate.of (m_aDateTime.toLocalDate (), m_aOffset);
}
@Nullable
public OffsetDateTime toOffsetDateTime ()
{
return OffsetDateTime.of (m_aDateTime, getOffsetOrDefault ());
}
/**
* Converts this date-time to a {@code ZonedDateTime} using the offset as the
* zone ID.
*
* This creates the simplest possible {@code ZonedDateTime} using the offset
* as the zone ID.
*
* To control the time-zone used, see {@link #atZoneSameInstant(ZoneId)} and
* {@link #atZoneSimilarLocal(ZoneId)}.
*
* @return a zoned date-time representing the same local date-time and offset,
* not null
*/
@Nonnull
public ZonedDateTime toZonedDateTime ()
{
return ZonedDateTime.of (m_aDateTime, getOffsetOrDefault ());
}
/**
* Converts this date-time to an {@code Instant}.
*
* This returns an {@code Instant} representing the same point on the
* time-line as this date-time.
*
* @return an {@code Instant} representing the same instant, not null
*/
@Nonnull
public Instant toInstant ()
{
return m_aDateTime.toInstant (getOffsetOrDefault ());
}
/**
* Converts this date-time to the number of seconds from the epoch of
* 1970-01-01T00:00:00Z.
*
* This allows this date-time to be converted to a value of the
* {@link ChronoField#INSTANT_SECONDS epoch-seconds} field. This is primarily
* intended for low-level conversions rather than general application usage.
*
* @return the number of seconds from the epoch of 1970-01-01T00:00:00Z
*/
public long toEpochSecond ()
{
return m_aDateTime.toEpochSecond (getOffsetOrUTC ());
}
/**
* Compares this date-time to another date-time.
*
* The comparison is based on the instant then on the local date-time. It is
* "consistent with equals", as defined by {@link Comparable}.
*
* For example, the following is the comparator order:
*
* - {@code 2008-12-03T10:30+01:00}
* - {@code 2008-12-03T11:00+01:00}
* - {@code 2008-12-03T12:00+02:00}
* - {@code 2008-12-03T11:30+01:00}
* - {@code 2008-12-03T12:00+01:00}
* - {@code 2008-12-03T12:30+01:00}
*
* Values #2 and #3 represent the same instant on the time-line. When two
* values represent the same instant, the local date-time is compared to
* distinguish them. This step is needed to make the ordering consistent with
* {@code equals()}.
*
* @param other
* the other date-time to compare to, not null
* @return the comparator value, negative if less, positive if greater
*/
@Override
public int compareTo (@Nonnull final XMLOffsetDateTime other)
{
int ret = compareInstant (this, other);
if (ret == 0)
ret = toLocalDateTime ().compareTo (other.toLocalDateTime ());
return ret;
}
/**
* Checks if the instant of this date-time is after that of the specified
* date-time.
*
* This method differs from the comparison in {@link #compareTo} and
* {@link #equals} in that it only compares the instant of the date-time. This
* is equivalent to using
* {@code dateTime1.toInstant().isAfter(dateTime2.toInstant());}.
*
* @param other
* the other date-time to compare to, not null
* @return true if this is after the instant of the specified date-time
*/
public boolean isAfter (@Nonnull final XMLOffsetDateTime other)
{
final long thisEpochSec = toEpochSecond ();
final long otherEpochSec = other.toEpochSecond ();
return thisEpochSec > otherEpochSec || (thisEpochSec == otherEpochSec && toLocalTime ().getNano () > other.toLocalTime ().getNano ());
}
/**
* Checks if the instant of this date-time is before that of the specified
* date-time.
*
* This method differs from the comparison in {@link #compareTo} in that it
* only compares the instant of the date-time. This is equivalent to using
* {@code dateTime1.toInstant().isBefore(dateTime2.toInstant());}.
*
* @param other
* the other date-time to compare to, not null
* @return true if this is before the instant of the specified date-time
*/
public boolean isBefore (@Nonnull final XMLOffsetDateTime other)
{
final long thisEpochSec = toEpochSecond ();
final long otherEpochSec = other.toEpochSecond ();
return thisEpochSec < otherEpochSec || (thisEpochSec == otherEpochSec && toLocalTime ().getNano () < other.toLocalTime ().getNano ());
}
/**
* Checks if the instant of this date-time is equal to that of the specified
* date-time.
*
* This method differs from the comparison in {@link #compareTo} and
* {@link #equals} in that it only compares the instant of the date-time. This
* is equivalent to using
* {@code dateTime1.toInstant().equals(dateTime2.toInstant());}.
*
* @param other
* the other date-time to compare to, not null
* @return true if the instant equals the instant of the specified date-time
*/
public boolean isEqual (@Nonnull final XMLOffsetDateTime other)
{
return toEpochSecond () == other.toEpochSecond () && toLocalTime ().getNano () == other.toLocalTime ().getNano ();
}
/**
* Checks if this date-time is equal to another date-time.
*
* The comparison is based on the local date-time and the offset. To compare
* for the same instant on the time-line, use {@link #isEqual}. Only objects
* of type {@code XMLOffsetDateTime} are compared, other types return false.
*
* @param o
* the object to check, null returns false
* @return true if this is equal to the other date-time
*/
@Override
public boolean equals (final Object o)
{
if (this == o)
return true;
if (o == null || !getClass ().equals (o.getClass ()))
return false;
final XMLOffsetDateTime other = (XMLOffsetDateTime) o;
return m_aDateTime.equals (other.m_aDateTime) && EqualsHelper.equals (m_aOffset, other.m_aOffset);
}
/**
* A hash code for this date-time.
*
* @return a suitable hash code
*/
@Override
public int hashCode ()
{
return new HashCodeGenerator (this).append (m_aDateTime).append (m_aOffset).getHashCode ();
}
// Don't use "getAsString" for compatibility with the rest of the Java DT API
@Nonnull
@Nonempty
@Deprecated (forRemoval = false)
public String getAsString ()
{
return toString ();
}
/**
* Outputs this date-time as a {@code String}, such as
* {@code 2007-12-03T10:15:30+01:00}.
*
* The output will be one of the following ISO-8601 formats:
*
* - {@code uuuu-MM-dd'T'HH:mm}
* - {@code uuuu-MM-dd'T'HH:mm:ss}
* - {@code uuuu-MM-dd'T'HH:mm:ss.SSS}
* - {@code uuuu-MM-dd'T'HH:mm:ss.SSSSSS}
* - {@code uuuu-MM-dd'T'HH:mm:ss.SSSSSSSSS}
* - {@code uuuu-MM-dd'T'HH:mmXXXXX}
* - {@code uuuu-MM-dd'T'HH:mm:ssXXXXX}
* - {@code uuuu-MM-dd'T'HH:mm:ss.SSSXXXXX}
* - {@code uuuu-MM-dd'T'HH:mm:ss.SSSSSSXXXXX}
* - {@code uuuu-MM-dd'T'HH:mm:ss.SSSSSSSSSXXXXX}
*
* The format used will be the shortest that outputs the full value of the
* time where the omitted parts are implied to be zero.
*
* @return a string representation of this date-time, not null
*/
@Override
public String toString ()
{
return m_aDateTime.toString () + (m_aOffset != null ? m_aOffset.toString () : "");
}
}