| /* |
| * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * This file is available under and governed by the GNU General Public |
| * License version 2 only, as published by the Free Software Foundation. |
| * However, the following notice accompanied the original version of this |
| * file: |
| * |
| * Copyright (c) 2007-2012, Stephen Colebourne & Michael Nascimento Santos |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * * Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * |
| * * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * * Neither the name of JSR-310 nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| package java.time; |
| |
| import static java.time.LocalTime.HOURS_PER_DAY; |
| import static java.time.LocalTime.MICROS_PER_DAY; |
| import static java.time.LocalTime.MILLIS_PER_DAY; |
| import static java.time.LocalTime.MINUTES_PER_DAY; |
| import static java.time.LocalTime.NANOS_PER_DAY; |
| import static java.time.LocalTime.NANOS_PER_HOUR; |
| import static java.time.LocalTime.NANOS_PER_MINUTE; |
| import static java.time.LocalTime.NANOS_PER_SECOND; |
| import static java.time.LocalTime.SECONDS_PER_DAY; |
| import static java.time.temporal.ChronoField.NANO_OF_SECOND; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.io.InvalidObjectException; |
| import java.io.ObjectInputStream; |
| import java.io.Serializable; |
| import java.time.chrono.ChronoLocalDateTime; |
| 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.time.zone.ZoneRules; |
| import java.util.Objects; |
| |
| /** |
| * A date-time without a time-zone in the ISO-8601 calendar system, |
| * such as {@code 2007-12-03T10:15:30}. |
| * <p> |
| * {@code LocalDateTime} is an immutable date-time object that represents a date-time, |
| * often viewed as year-month-day-hour-minute-second. Other date and time fields, |
| * such as day-of-year, day-of-week and week-of-year, can also be accessed. |
| * Time is represented to nanosecond precision. |
| * For example, the value "2nd October 2007 at 13:45.30.123456789" can be |
| * stored in a {@code LocalDateTime}. |
| * <p> |
| * This class does not store or represent a time-zone. |
| * Instead, it is a description of the date, as used for birthdays, combined with |
| * the local time as seen on a wall clock. |
| * It cannot represent an instant on the time-line without additional information |
| * such as an offset or time-zone. |
| * <p> |
| * The ISO-8601 calendar system is the modern civil calendar system used today |
| * in most of the world. It is equivalent to the proleptic Gregorian calendar |
| * system, in which today's rules for leap years are applied for all time. |
| * For most applications written today, the ISO-8601 rules are entirely suitable. |
| * However, any application that makes use of historical dates, and requires them |
| * to be accurate will find the ISO-8601 approach unsuitable. |
| * |
| * <p> |
| * This is a <a href="{@docRoot}/java/lang/doc-files/ValueBased.html">value-based</a> |
| * class; use of identity-sensitive operations (including reference equality |
| * ({@code ==}), identity hash code, or synchronization) on instances of |
| * {@code LocalDateTime} may have unpredictable results and should be avoided. |
| * The {@code equals} method should be used for comparisons. |
| * |
| * @implSpec |
| * This class is immutable and thread-safe. |
| * |
| * @since 1.8 |
| */ |
| public final class LocalDateTime |
| implements Temporal, TemporalAdjuster, ChronoLocalDateTime<LocalDate>, Serializable { |
| |
| /** |
| * The minimum supported {@code LocalDateTime}, '-999999999-01-01T00:00:00'. |
| * This is the local date-time of midnight at the start of the minimum date. |
| * This combines {@link LocalDate#MIN} and {@link LocalTime#MIN}. |
| * This could be used by an application as a "far past" date-time. |
| */ |
| public static final LocalDateTime MIN = LocalDateTime.of(LocalDate.MIN, LocalTime.MIN); |
| /** |
| * The maximum supported {@code LocalDateTime}, '+999999999-12-31T23:59:59.999999999'. |
| * This is the local date-time just before midnight at the end of the maximum date. |
| * This combines {@link LocalDate#MAX} and {@link LocalTime#MAX}. |
| * This could be used by an application as a "far future" date-time. |
| */ |
| public static final LocalDateTime MAX = LocalDateTime.of(LocalDate.MAX, LocalTime.MAX); |
| |
| /** |
| * Serialization version. |
| */ |
| private static final long serialVersionUID = 6207766400415563566L; |
| |
| /** |
| * The date part. |
| */ |
| private final LocalDate date; |
| /** |
| * The time part. |
| */ |
| private final LocalTime time; |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Obtains the current date-time from the system clock in the default time-zone. |
| * <p> |
| * This will query the {@link Clock#systemDefaultZone() system clock} in the default |
| * time-zone to obtain the current date-time. |
| * <p> |
| * 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 and default time-zone, not null |
| */ |
| public static LocalDateTime now() { |
| return now(Clock.systemDefaultZone()); |
| } |
| |
| /** |
| * Obtains the current date-time from the system clock in the specified time-zone. |
| * <p> |
| * 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. |
| * <p> |
| * 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 |
| */ |
| public static LocalDateTime now(ZoneId zone) { |
| return now(Clock.system(zone)); |
| } |
| |
| /** |
| * Obtains the current date-time from the specified clock. |
| * <p> |
| * This will query the specified clock to obtain the current date-time. |
| * 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 |
| */ |
| public static LocalDateTime now(Clock clock) { |
| Objects.requireNonNull(clock, "clock"); |
| final Instant now = clock.instant(); // called once |
| ZoneOffset offset = clock.getZone().getRules().getOffset(now); |
| return ofEpochSecond(now.getEpochSecond(), now.getNano(), offset); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Obtains an instance of {@code LocalDateTime} from year, month, |
| * day, hour and minute, setting the second and nanosecond to zero. |
| * <p> |
| * This returns a {@code LocalDateTime} with the specified year, month, |
| * day-of-month, hour and minute. |
| * The day must be valid for the year and month, otherwise an exception will be thrown. |
| * The second and nanosecond fields will be set to zero. |
| * |
| * @param year the year to represent, from MIN_YEAR to MAX_YEAR |
| * @param month the month-of-year to represent, not null |
| * @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 |
| * @return the local 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 |
| */ |
| public static LocalDateTime of(int year, Month month, int dayOfMonth, int hour, int minute) { |
| LocalDate date = LocalDate.of(year, month, dayOfMonth); |
| LocalTime time = LocalTime.of(hour, minute); |
| return new LocalDateTime(date, time); |
| } |
| |
| /** |
| * Obtains an instance of {@code LocalDateTime} from year, month, |
| * day, hour, minute and second, setting the nanosecond to zero. |
| * <p> |
| * This returns a {@code LocalDateTime} with the specified year, month, |
| * day-of-month, hour, minute and second. |
| * The day must be valid for the year and month, otherwise an exception will be thrown. |
| * The nanosecond field will be set to zero. |
| * |
| * @param year the year to represent, from MIN_YEAR to MAX_YEAR |
| * @param month the month-of-year to represent, not null |
| * @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 |
| * @return the local 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 |
| */ |
| public static LocalDateTime of(int year, Month month, int dayOfMonth, int hour, int minute, int second) { |
| LocalDate date = LocalDate.of(year, month, dayOfMonth); |
| LocalTime time = LocalTime.of(hour, minute, second); |
| return new LocalDateTime(date, time); |
| } |
| |
| /** |
| * Obtains an instance of {@code LocalDateTime} from year, month, |
| * day, hour, minute, second and nanosecond. |
| * <p> |
| * This returns a {@code LocalDateTime} with the specified year, month, |
| * day-of-month, hour, minute, second and nanosecond. |
| * The day must be valid for the year and month, otherwise an exception will be thrown. |
| * |
| * @param year the year to represent, from MIN_YEAR to MAX_YEAR |
| * @param month the month-of-year to represent, not null |
| * @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 |
| * @return the local 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 |
| */ |
| public static LocalDateTime of(int year, Month month, int dayOfMonth, int hour, int minute, int second, int nanoOfSecond) { |
| LocalDate date = LocalDate.of(year, month, dayOfMonth); |
| LocalTime time = LocalTime.of(hour, minute, second, nanoOfSecond); |
| return new LocalDateTime(date, time); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Obtains an instance of {@code LocalDateTime} from year, month, |
| * day, hour and minute, setting the second and nanosecond to zero. |
| * <p> |
| * This returns a {@code LocalDateTime} with the specified year, month, |
| * day-of-month, hour and minute. |
| * The day must be valid for the year and month, otherwise an exception will be thrown. |
| * The second and nanosecond fields will be set to zero. |
| * |
| * @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 |
| * @return the local 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 |
| */ |
| public static LocalDateTime of(int year, int month, int dayOfMonth, int hour, int minute) { |
| LocalDate date = LocalDate.of(year, month, dayOfMonth); |
| LocalTime time = LocalTime.of(hour, minute); |
| return new LocalDateTime(date, time); |
| } |
| |
| /** |
| * Obtains an instance of {@code LocalDateTime} from year, month, |
| * day, hour, minute and second, setting the nanosecond to zero. |
| * <p> |
| * This returns a {@code LocalDateTime} with the specified year, month, |
| * day-of-month, hour, minute and second. |
| * The day must be valid for the year and month, otherwise an exception will be thrown. |
| * The nanosecond field will be set to zero. |
| * |
| * @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 |
| * @return the local 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 |
| */ |
| public static LocalDateTime of(int year, int month, int dayOfMonth, int hour, int minute, int second) { |
| LocalDate date = LocalDate.of(year, month, dayOfMonth); |
| LocalTime time = LocalTime.of(hour, minute, second); |
| return new LocalDateTime(date, time); |
| } |
| |
| /** |
| * Obtains an instance of {@code LocalDateTime} from year, month, |
| * day, hour, minute, second and nanosecond. |
| * <p> |
| * This returns a {@code LocalDateTime} with the specified year, month, |
| * day-of-month, hour, minute, second and nanosecond. |
| * The day must be valid for the year and month, otherwise an exception will be thrown. |
| * |
| * @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 |
| * @return the local 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 |
| */ |
| public static LocalDateTime of(int year, int month, int dayOfMonth, int hour, int minute, int second, int nanoOfSecond) { |
| LocalDate date = LocalDate.of(year, month, dayOfMonth); |
| LocalTime time = LocalTime.of(hour, minute, second, nanoOfSecond); |
| return new LocalDateTime(date, time); |
| } |
| |
| /** |
| * Obtains an instance of {@code LocalDateTime} from a date and time. |
| * |
| * @param date the local date, not null |
| * @param time the local time, not null |
| * @return the local date-time, not null |
| */ |
| public static LocalDateTime of(LocalDate date, LocalTime time) { |
| Objects.requireNonNull(date, "date"); |
| Objects.requireNonNull(time, "time"); |
| return new LocalDateTime(date, time); |
| } |
| |
| //------------------------------------------------------------------------- |
| /** |
| * Obtains an instance of {@code LocalDateTime} from an {@code Instant} and zone ID. |
| * <p> |
| * This creates a local date-time based on the specified instant. |
| * First, the offset from UTC/Greenwich is obtained using the zone ID and instant, |
| * which is simple as there is only one valid offset for each instant. |
| * Then, the instant and offset are used to calculate the local date-time. |
| * |
| * @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 local date-time, not null |
| * @throws DateTimeException if the result exceeds the supported range |
| */ |
| public static LocalDateTime ofInstant(Instant instant, ZoneId zone) { |
| Objects.requireNonNull(instant, "instant"); |
| Objects.requireNonNull(zone, "zone"); |
| ZoneRules rules = zone.getRules(); |
| ZoneOffset offset = rules.getOffset(instant); |
| return ofEpochSecond(instant.getEpochSecond(), instant.getNano(), offset); |
| } |
| |
| /** |
| * Obtains an instance of {@code LocalDateTime} using seconds from the |
| * epoch of 1970-01-01T00:00:00Z. |
| * <p> |
| * This allows the {@link ChronoField#INSTANT_SECONDS epoch-second} field |
| * to be converted to a local date-time. This is primarily intended for |
| * low-level conversions rather than general application usage. |
| * |
| * @param epochSecond the number of seconds from the epoch of 1970-01-01T00:00:00Z |
| * @param nanoOfSecond the nanosecond within the second, from 0 to 999,999,999 |
| * @param offset the zone offset, not null |
| * @return the local date-time, not null |
| * @throws DateTimeException if the result exceeds the supported range, |
| * or if the nano-of-second is invalid |
| */ |
| public static LocalDateTime ofEpochSecond(long epochSecond, int nanoOfSecond, ZoneOffset offset) { |
| Objects.requireNonNull(offset, "offset"); |
| NANO_OF_SECOND.checkValidValue(nanoOfSecond); |
| long localSecond = epochSecond + offset.getTotalSeconds(); // overflow caught later |
| long localEpochDay = Math.floorDiv(localSecond, SECONDS_PER_DAY); |
| int secsOfDay = (int)Math.floorMod(localSecond, SECONDS_PER_DAY); |
| LocalDate date = LocalDate.ofEpochDay(localEpochDay); |
| LocalTime time = LocalTime.ofNanoOfDay(secsOfDay * NANOS_PER_SECOND + nanoOfSecond); |
| return new LocalDateTime(date, time); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Obtains an instance of {@code LocalDateTime} from a temporal object. |
| * <p> |
| * This obtains an offset 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 LocalDateTime}. |
| * <p> |
| * The conversion extracts and combines the {@code LocalDate} and the |
| * {@code LocalTime} from the temporal object. |
| * Implementations are permitted to perform optimizations such as accessing |
| * those fields that are equivalent to the relevant objects. |
| * <p> |
| * This method matches the signature of the functional interface {@link TemporalQuery} |
| * allowing it to be used as a query via method reference, {@code LocalDateTime::from}. |
| * |
| * @param temporal the temporal object to convert, not null |
| * @return the local date-time, not null |
| * @throws DateTimeException if unable to convert to a {@code LocalDateTime} |
| */ |
| public static LocalDateTime from(TemporalAccessor temporal) { |
| if (temporal instanceof LocalDateTime) { |
| return (LocalDateTime) temporal; |
| } else if (temporal instanceof ZonedDateTime) { |
| return ((ZonedDateTime) temporal).toLocalDateTime(); |
| } else if (temporal instanceof OffsetDateTime) { |
| return ((OffsetDateTime) temporal).toLocalDateTime(); |
| } |
| try { |
| LocalDate date = LocalDate.from(temporal); |
| LocalTime time = LocalTime.from(temporal); |
| return new LocalDateTime(date, time); |
| } catch (DateTimeException ex) { |
| throw new DateTimeException("Unable to obtain LocalDateTime from TemporalAccessor: " + |
| temporal + " of type " + temporal.getClass().getName(), ex); |
| } |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Obtains an instance of {@code LocalDateTime} from a text string such as {@code 2007-12-03T10:15:30}. |
| * <p> |
| * The string must represent a valid date-time and is parsed using |
| * {@link java.time.format.DateTimeFormatter#ISO_LOCAL_DATE_TIME}. |
| * |
| * @param text the text to parse such as "2007-12-03T10:15:30", not null |
| * @return the parsed local date-time, not null |
| * @throws DateTimeParseException if the text cannot be parsed |
| */ |
| public static LocalDateTime parse(CharSequence text) { |
| return parse(text, DateTimeFormatter.ISO_LOCAL_DATE_TIME); |
| } |
| |
| /** |
| * Obtains an instance of {@code LocalDateTime} from a text string using a specific formatter. |
| * <p> |
| * 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 local date-time, not null |
| * @throws DateTimeParseException if the text cannot be parsed |
| */ |
| public static LocalDateTime parse(CharSequence text, DateTimeFormatter formatter) { |
| Objects.requireNonNull(formatter, "formatter"); |
| return formatter.parse(text, LocalDateTime::from); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Constructor. |
| * |
| * @param date the date part of the date-time, validated not null |
| * @param time the time part of the date-time, validated not null |
| */ |
| private LocalDateTime(LocalDate date, LocalTime time) { |
| this.date = date; |
| this.time = time; |
| } |
| |
| /** |
| * Returns a copy of this date-time with the new date and time, checking |
| * to see if a new object is in fact required. |
| * |
| * @param newDate the date of the new date-time, not null |
| * @param newTime the time of the new date-time, not null |
| * @return the date-time, not null |
| */ |
| private LocalDateTime with(LocalDate newDate, LocalTime newTime) { |
| if (date == newDate && time == newTime) { |
| return this; |
| } |
| return new LocalDateTime(newDate, newTime); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Checks if the specified field is supported. |
| * <p> |
| * 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. |
| * <p> |
| * If the field is a {@link ChronoField} then the query is implemented here. |
| * The supported fields are: |
| * <ul> |
| * <li>{@code NANO_OF_SECOND} |
| * <li>{@code NANO_OF_DAY} |
| * <li>{@code MICRO_OF_SECOND} |
| * <li>{@code MICRO_OF_DAY} |
| * <li>{@code MILLI_OF_SECOND} |
| * <li>{@code MILLI_OF_DAY} |
| * <li>{@code SECOND_OF_MINUTE} |
| * <li>{@code SECOND_OF_DAY} |
| * <li>{@code MINUTE_OF_HOUR} |
| * <li>{@code MINUTE_OF_DAY} |
| * <li>{@code HOUR_OF_AMPM} |
| * <li>{@code CLOCK_HOUR_OF_AMPM} |
| * <li>{@code HOUR_OF_DAY} |
| * <li>{@code CLOCK_HOUR_OF_DAY} |
| * <li>{@code AMPM_OF_DAY} |
| * <li>{@code DAY_OF_WEEK} |
| * <li>{@code ALIGNED_DAY_OF_WEEK_IN_MONTH} |
| * <li>{@code ALIGNED_DAY_OF_WEEK_IN_YEAR} |
| * <li>{@code DAY_OF_MONTH} |
| * <li>{@code DAY_OF_YEAR} |
| * <li>{@code EPOCH_DAY} |
| * <li>{@code ALIGNED_WEEK_OF_MONTH} |
| * <li>{@code ALIGNED_WEEK_OF_YEAR} |
| * <li>{@code MONTH_OF_YEAR} |
| * <li>{@code PROLEPTIC_MONTH} |
| * <li>{@code YEAR_OF_ERA} |
| * <li>{@code YEAR} |
| * <li>{@code ERA} |
| * </ul> |
| * All other {@code ChronoField} instances will return false. |
| * <p> |
| * 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(TemporalField field) { |
| if (field instanceof ChronoField) { |
| ChronoField f = (ChronoField) field; |
| return f.isDateBased() || f.isTimeBased(); |
| } |
| return field != null && field.isSupportedBy(this); |
| } |
| |
| /** |
| * Checks if the specified unit is supported. |
| * <p> |
| * 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. |
| * <p> |
| * If the unit is a {@link ChronoUnit} then the query is implemented here. |
| * The supported units are: |
| * <ul> |
| * <li>{@code NANOS} |
| * <li>{@code MICROS} |
| * <li>{@code MILLIS} |
| * <li>{@code SECONDS} |
| * <li>{@code MINUTES} |
| * <li>{@code HOURS} |
| * <li>{@code HALF_DAYS} |
| * <li>{@code DAYS} |
| * <li>{@code WEEKS} |
| * <li>{@code MONTHS} |
| * <li>{@code YEARS} |
| * <li>{@code DECADES} |
| * <li>{@code CENTURIES} |
| * <li>{@code MILLENNIA} |
| * <li>{@code ERAS} |
| * </ul> |
| * All other {@code ChronoUnit} instances will return false. |
| * <p> |
| * 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(TemporalUnit unit) { |
| return ChronoLocalDateTime.super.isSupported(unit); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Gets the range of valid values for the specified field. |
| * <p> |
| * 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. |
| * <p> |
| * 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}. |
| * <p> |
| * 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 |
| public ValueRange range(TemporalField field) { |
| if (field instanceof ChronoField) { |
| ChronoField f = (ChronoField) field; |
| return (f.isTimeBased() ? time.range(field) : date.range(field)); |
| } |
| return field.rangeRefinedBy(this); |
| } |
| |
| /** |
| * Gets the value of the specified field from this date-time as an {@code int}. |
| * <p> |
| * This queries this date-time for the value for 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. |
| * <p> |
| * 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} and {@code PROLEPTIC_MONTH} 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}. |
| * <p> |
| * 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(TemporalField field) { |
| if (field instanceof ChronoField) { |
| ChronoField f = (ChronoField) field; |
| return (f.isTimeBased() ? time.get(field) : date.get(field)); |
| } |
| return ChronoLocalDateTime.super.get(field); |
| } |
| |
| /** |
| * Gets the value of the specified field from this date-time as a {@code long}. |
| * <p> |
| * This queries this date-time for the value for 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. |
| * <p> |
| * 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}. |
| * <p> |
| * 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(TemporalField field) { |
| if (field instanceof ChronoField) { |
| ChronoField f = (ChronoField) field; |
| return (f.isTimeBased() ? time.getLong(field) : date.getLong(field)); |
| } |
| return field.getFrom(this); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Gets the {@code LocalDate} part of this date-time. |
| * <p> |
| * 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 |
| */ |
| @Override |
| public LocalDate toLocalDate() { |
| return date; |
| } |
| |
| /** |
| * Gets the year field. |
| * <p> |
| * This method returns the primitive {@code int} value for the year. |
| * <p> |
| * 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 date.getYear(); |
| } |
| |
| /** |
| * Gets the month-of-year field from 1 to 12. |
| * <p> |
| * 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 date.getMonthValue(); |
| } |
| |
| /** |
| * Gets the month-of-year field using the {@code Month} enum. |
| * <p> |
| * 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() |
| */ |
| public Month getMonth() { |
| return date.getMonth(); |
| } |
| |
| /** |
| * Gets the day-of-month field. |
| * <p> |
| * 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 date.getDayOfMonth(); |
| } |
| |
| /** |
| * Gets the day-of-year field. |
| * <p> |
| * 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 date.getDayOfYear(); |
| } |
| |
| /** |
| * Gets the day-of-week field, which is an enum {@code DayOfWeek}. |
| * <p> |
| * 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}. |
| * <p> |
| * Additional information can be obtained from the {@code DayOfWeek}. |
| * This includes textual names of the values. |
| * |
| * @return the day-of-week, not null |
| */ |
| public DayOfWeek getDayOfWeek() { |
| return date.getDayOfWeek(); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Gets the {@code LocalTime} part of this date-time. |
| * <p> |
| * 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 |
| */ |
| @Override |
| public LocalTime toLocalTime() { |
| return time; |
| } |
| |
| /** |
| * Gets the hour-of-day field. |
| * |
| * @return the hour-of-day, from 0 to 23 |
| */ |
| public int getHour() { |
| return time.getHour(); |
| } |
| |
| /** |
| * Gets the minute-of-hour field. |
| * |
| * @return the minute-of-hour, from 0 to 59 |
| */ |
| public int getMinute() { |
| return time.getMinute(); |
| } |
| |
| /** |
| * Gets the second-of-minute field. |
| * |
| * @return the second-of-minute, from 0 to 59 |
| */ |
| public int getSecond() { |
| return time.getSecond(); |
| } |
| |
| /** |
| * Gets the nano-of-second field. |
| * |
| * @return the nano-of-second, from 0 to 999,999,999 |
| */ |
| public int getNano() { |
| return time.getNano(); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Returns an adjusted copy of this date-time. |
| * <p> |
| * This returns a {@code LocalDateTime}, 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. |
| * <p> |
| * 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 TemporalAdjuster}. |
| * 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. |
| * <p> |
| * For example this code returns a date on the last day of July: |
| * <pre> |
| * import static java.time.Month.*; |
| * import static java.time.temporal.Adjusters.*; |
| * |
| * result = localDateTime.with(JULY).with(lastDayOfMonth()); |
| * </pre> |
| * <p> |
| * The classes {@link LocalDate} and {@link LocalTime} implement {@code TemporalAdjuster}, |
| * thus this method can be used to change the date, time or offset: |
| * <pre> |
| * result = localDateTime.with(date); |
| * result = localDateTime.with(time); |
| * </pre> |
| * <p> |
| * 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. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param adjuster the adjuster to use, not null |
| * @return a {@code LocalDateTime} 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 |
| public LocalDateTime with(TemporalAdjuster adjuster) { |
| // optimizations |
| if (adjuster instanceof LocalDate) { |
| return with((LocalDate) adjuster, time); |
| } else if (adjuster instanceof LocalTime) { |
| return with(date, (LocalTime) adjuster); |
| } else if (adjuster instanceof LocalDateTime) { |
| return (LocalDateTime) adjuster; |
| } |
| return (LocalDateTime) adjuster.adjustInto(this); |
| } |
| |
| /** |
| * Returns a copy of this date-time with the specified field set to a new value. |
| * <p> |
| * This returns a {@code LocalDateTime}, 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. |
| * <p> |
| * 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. |
| * <p> |
| * If the field is a {@link ChronoField} then the adjustment is implemented here. |
| * The {@link #isSupported(TemporalField) supported fields} will behave as per |
| * the matching method on {@link LocalDate#with(TemporalField, long) LocalDate} |
| * or {@link LocalTime#with(TemporalField, long) LocalTime}. |
| * All other {@code ChronoField} instances will throw an {@code UnsupportedTemporalTypeException}. |
| * <p> |
| * 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. |
| * <p> |
| * 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 a {@code LocalDateTime} 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 |
| public LocalDateTime with(TemporalField field, long newValue) { |
| if (field instanceof ChronoField) { |
| ChronoField f = (ChronoField) field; |
| if (f.isTimeBased()) { |
| return with(date, time.with(field, newValue)); |
| } else { |
| return with(date.with(field, newValue), time); |
| } |
| } |
| return field.adjustInto(this, newValue); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the year altered. |
| * The time does 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. |
| * <p> |
| * 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 a {@code LocalDateTime} based on this date-time with the requested year, not null |
| * @throws DateTimeException if the year value is invalid |
| */ |
| public LocalDateTime withYear(int year) { |
| return with(date.withYear(year), time); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the month-of-year altered. |
| * The time does 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. |
| * <p> |
| * 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 a {@code LocalDateTime} based on this date-time with the requested month, not null |
| * @throws DateTimeException if the month-of-year value is invalid |
| */ |
| public LocalDateTime withMonth(int month) { |
| return with(date.withMonth(month), time); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the day-of-month altered. |
| * If the resulting {@code LocalDateTime} is invalid, an exception is thrown. |
| * The time does not affect the calculation and will be the same in the result. |
| * <p> |
| * 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 a {@code LocalDateTime} 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 |
| */ |
| public LocalDateTime withDayOfMonth(int dayOfMonth) { |
| return with(date.withDayOfMonth(dayOfMonth), time); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the day-of-year altered. |
| * If the resulting {@code LocalDateTime} is invalid, an exception is thrown. |
| * <p> |
| * 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 a {@code LocalDateTime} 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 |
| */ |
| public LocalDateTime withDayOfYear(int dayOfYear) { |
| return with(date.withDayOfYear(dayOfYear), time); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the hour-of-day value altered. |
| * <p> |
| * 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 a {@code LocalDateTime} based on this date-time with the requested hour, not null |
| * @throws DateTimeException if the hour value is invalid |
| */ |
| public LocalDateTime withHour(int hour) { |
| LocalTime newTime = time.withHour(hour); |
| return with(date, newTime); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the minute-of-hour value altered. |
| * <p> |
| * 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 a {@code LocalDateTime} based on this date-time with the requested minute, not null |
| * @throws DateTimeException if the minute value is invalid |
| */ |
| public LocalDateTime withMinute(int minute) { |
| LocalTime newTime = time.withMinute(minute); |
| return with(date, newTime); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the second-of-minute value altered. |
| * <p> |
| * 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 a {@code LocalDateTime} based on this date-time with the requested second, not null |
| * @throws DateTimeException if the second value is invalid |
| */ |
| public LocalDateTime withSecond(int second) { |
| LocalTime newTime = time.withSecond(second); |
| return with(date, newTime); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the nano-of-second value altered. |
| * <p> |
| * 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 a {@code LocalDateTime} based on this date-time with the requested nanosecond, not null |
| * @throws DateTimeException if the nano value is invalid |
| */ |
| public LocalDateTime withNano(int nanoOfSecond) { |
| LocalTime newTime = time.withNano(nanoOfSecond); |
| return with(date, newTime); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the time truncated. |
| * <p> |
| * 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. |
| * <p> |
| * 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. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param unit the unit to truncate to, not null |
| * @return a {@code LocalDateTime} based on this date-time with the time truncated, not null |
| * @throws DateTimeException if unable to truncate |
| * @throws UnsupportedTemporalTypeException if the field is not supported |
| */ |
| public LocalDateTime truncatedTo(TemporalUnit unit) { |
| return with(date, time.truncatedTo(unit)); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Returns a copy of this date-time with the specified amount added. |
| * <p> |
| * This returns a {@code LocalDateTime}, 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. |
| * <p> |
| * 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. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param amountToAdd the amount to add, not null |
| * @return a {@code LocalDateTime} 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 LocalDateTime plus(TemporalAmount amountToAdd) { |
| if (amountToAdd instanceof Period) { |
| Period periodToAdd = (Period) amountToAdd; |
| return with(date.plus(periodToAdd), time); |
| } |
| Objects.requireNonNull(amountToAdd, "amountToAdd"); |
| return (LocalDateTime) amountToAdd.addTo(this); |
| } |
| |
| /** |
| * Returns a copy of this date-time with the specified amount added. |
| * <p> |
| * This returns a {@code LocalDateTime}, 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. |
| * <p> |
| * If the field is a {@link ChronoUnit} then the addition is implemented here. |
| * Date units are added as per {@link LocalDate#plus(long, TemporalUnit)}. |
| * Time units are added as per {@link LocalTime#plus(long, TemporalUnit)} with |
| * any overflow in days added equivalent to using {@link #plusDays(long)}. |
| * <p> |
| * 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. |
| * <p> |
| * 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 a {@code LocalDateTime} 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 LocalDateTime plus(long amountToAdd, TemporalUnit unit) { |
| if (unit instanceof ChronoUnit) { |
| ChronoUnit f = (ChronoUnit) unit; |
| switch (f) { |
| case NANOS: return plusNanos(amountToAdd); |
| case MICROS: return plusDays(amountToAdd / MICROS_PER_DAY).plusNanos((amountToAdd % MICROS_PER_DAY) * 1000); |
| case MILLIS: return plusDays(amountToAdd / MILLIS_PER_DAY).plusNanos((amountToAdd % MILLIS_PER_DAY) * 1000_000); |
| case SECONDS: return plusSeconds(amountToAdd); |
| case MINUTES: return plusMinutes(amountToAdd); |
| case HOURS: return plusHours(amountToAdd); |
| case HALF_DAYS: return plusDays(amountToAdd / 256).plusHours((amountToAdd % 256) * 12); // no overflow (256 is multiple of 2) |
| } |
| return with(date.plus(amountToAdd, unit), time); |
| } |
| return unit.addTo(this, amountToAdd); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in years added. |
| * <p> |
| * This method adds the specified amount to the years field in three steps: |
| * <ol> |
| * <li>Add the input years to the year field</li> |
| * <li>Check if the resulting date would be invalid</li> |
| * <li>Adjust the day-of-month to the last valid day if necessary</li> |
| * </ol> |
| * <p> |
| * 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. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param years the years to add, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the years added, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime plusYears(long years) { |
| LocalDate newDate = date.plusYears(years); |
| return with(newDate, time); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in months added. |
| * <p> |
| * This method adds the specified amount to the months field in three steps: |
| * <ol> |
| * <li>Add the input months to the month-of-year field</li> |
| * <li>Check if the resulting date would be invalid</li> |
| * <li>Adjust the day-of-month to the last valid day if necessary</li> |
| * </ol> |
| * <p> |
| * 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. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param months the months to add, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the months added, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime plusMonths(long months) { |
| LocalDate newDate = date.plusMonths(months); |
| return with(newDate, time); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in weeks added. |
| * <p> |
| * 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. |
| * <p> |
| * For example, 2008-12-31 plus one week would result in 2009-01-07. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param weeks the weeks to add, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the weeks added, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime plusWeeks(long weeks) { |
| LocalDate newDate = date.plusWeeks(weeks); |
| return with(newDate, time); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in days added. |
| * <p> |
| * 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. |
| * <p> |
| * For example, 2008-12-31 plus one day would result in 2009-01-01. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param days the days to add, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the days added, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime plusDays(long days) { |
| LocalDate newDate = date.plusDays(days); |
| return with(newDate, time); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in hours added. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param hours the hours to add, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the hours added, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime plusHours(long hours) { |
| return plusWithOverflow(date, hours, 0, 0, 0, 1); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in minutes added. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param minutes the minutes to add, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the minutes added, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime plusMinutes(long minutes) { |
| return plusWithOverflow(date, 0, minutes, 0, 0, 1); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in seconds added. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param seconds the seconds to add, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the seconds added, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime plusSeconds(long seconds) { |
| return plusWithOverflow(date, 0, 0, seconds, 0, 1); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in nanoseconds added. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param nanos the nanos to add, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the nanoseconds added, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime plusNanos(long nanos) { |
| return plusWithOverflow(date, 0, 0, 0, nanos, 1); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Returns a copy of this date-time with the specified amount subtracted. |
| * <p> |
| * This returns a {@code LocalDateTime}, 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. |
| * <p> |
| * 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. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param amountToSubtract the amount to subtract, not null |
| * @return a {@code LocalDateTime} 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 |
| public LocalDateTime minus(TemporalAmount amountToSubtract) { |
| if (amountToSubtract instanceof Period) { |
| Period periodToSubtract = (Period) amountToSubtract; |
| return with(date.minus(periodToSubtract), time); |
| } |
| Objects.requireNonNull(amountToSubtract, "amountToSubtract"); |
| return (LocalDateTime) amountToSubtract.subtractFrom(this); |
| } |
| |
| /** |
| * Returns a copy of this date-time with the specified amount subtracted. |
| * <p> |
| * This returns a {@code LocalDateTime}, 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. |
| * <p> |
| * 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. |
| * <p> |
| * 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 a {@code LocalDateTime} 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 |
| public LocalDateTime minus(long amountToSubtract, TemporalUnit unit) { |
| return (amountToSubtract == Long.MIN_VALUE ? plus(Long.MAX_VALUE, unit).plus(1, unit) : plus(-amountToSubtract, unit)); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in years subtracted. |
| * <p> |
| * This method subtracts the specified amount from the years field in three steps: |
| * <ol> |
| * <li>Subtract the input years from the year field</li> |
| * <li>Check if the resulting date would be invalid</li> |
| * <li>Adjust the day-of-month to the last valid day if necessary</li> |
| * </ol> |
| * <p> |
| * 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. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param years the years to subtract, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the years subtracted, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime minusYears(long years) { |
| return (years == Long.MIN_VALUE ? plusYears(Long.MAX_VALUE).plusYears(1) : plusYears(-years)); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in months subtracted. |
| * <p> |
| * This method subtracts the specified amount from the months field in three steps: |
| * <ol> |
| * <li>Subtract the input months from the month-of-year field</li> |
| * <li>Check if the resulting date would be invalid</li> |
| * <li>Adjust the day-of-month to the last valid day if necessary</li> |
| * </ol> |
| * <p> |
| * 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. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param months the months to subtract, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the months subtracted, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime minusMonths(long months) { |
| return (months == Long.MIN_VALUE ? plusMonths(Long.MAX_VALUE).plusMonths(1) : plusMonths(-months)); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in weeks subtracted. |
| * <p> |
| * 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. |
| * <p> |
| * For example, 2009-01-07 minus one week would result in 2008-12-31. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param weeks the weeks to subtract, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the weeks subtracted, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime minusWeeks(long weeks) { |
| return (weeks == Long.MIN_VALUE ? plusWeeks(Long.MAX_VALUE).plusWeeks(1) : plusWeeks(-weeks)); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in days subtracted. |
| * <p> |
| * This method subtracts the specified amount from 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. |
| * <p> |
| * For example, 2009-01-01 minus one day would result in 2008-12-31. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param days the days to subtract, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the days subtracted, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime minusDays(long days) { |
| return (days == Long.MIN_VALUE ? plusDays(Long.MAX_VALUE).plusDays(1) : plusDays(-days)); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in hours subtracted. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param hours the hours to subtract, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the hours subtracted, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime minusHours(long hours) { |
| return plusWithOverflow(date, hours, 0, 0, 0, -1); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in minutes subtracted. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param minutes the minutes to subtract, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the minutes subtracted, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime minusMinutes(long minutes) { |
| return plusWithOverflow(date, 0, minutes, 0, 0, -1); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in seconds subtracted. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param seconds the seconds to subtract, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the seconds subtracted, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime minusSeconds(long seconds) { |
| return plusWithOverflow(date, 0, 0, seconds, 0, -1); |
| } |
| |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period in nanoseconds subtracted. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param nanos the nanos to subtract, may be negative |
| * @return a {@code LocalDateTime} based on this date-time with the nanoseconds subtracted, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| public LocalDateTime minusNanos(long nanos) { |
| return plusWithOverflow(date, 0, 0, 0, nanos, -1); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Returns a copy of this {@code LocalDateTime} with the specified period added. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param newDate the new date to base the calculation on, not null |
| * @param hours the hours to add, may be negative |
| * @param minutes the minutes to add, may be negative |
| * @param seconds the seconds to add, may be negative |
| * @param nanos the nanos to add, may be negative |
| * @param sign the sign to determine add or subtract |
| * @return the combined result, not null |
| */ |
| private LocalDateTime plusWithOverflow(LocalDate newDate, long hours, long minutes, long seconds, long nanos, int sign) { |
| // 9223372036854775808 long, 2147483648 int |
| if ((hours | minutes | seconds | nanos) == 0) { |
| return with(newDate, time); |
| } |
| long totDays = nanos / NANOS_PER_DAY + // max/24*60*60*1B |
| seconds / SECONDS_PER_DAY + // max/24*60*60 |
| minutes / MINUTES_PER_DAY + // max/24*60 |
| hours / HOURS_PER_DAY; // max/24 |
| totDays *= sign; // total max*0.4237... |
| long totNanos = nanos % NANOS_PER_DAY + // max 86400000000000 |
| (seconds % SECONDS_PER_DAY) * NANOS_PER_SECOND + // max 86400000000000 |
| (minutes % MINUTES_PER_DAY) * NANOS_PER_MINUTE + // max 86400000000000 |
| (hours % HOURS_PER_DAY) * NANOS_PER_HOUR; // max 86400000000000 |
| long curNoD = time.toNanoOfDay(); // max 86400000000000 |
| totNanos = totNanos * sign + curNoD; // total 432000000000000 |
| totDays += Math.floorDiv(totNanos, NANOS_PER_DAY); |
| long newNoD = Math.floorMod(totNanos, NANOS_PER_DAY); |
| LocalTime newTime = (newNoD == curNoD ? time : LocalTime.ofNanoOfDay(newNoD)); |
| return with(newDate.plusDays(totDays), newTime); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Queries this date-time using the specified query. |
| * <p> |
| * 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. |
| * <p> |
| * The result of this method is obtained by invoking the |
| * {@link java.time.temporal.TemporalQuery#queryFrom(TemporalAccessor)} method on the |
| * specified query passing {@code this} as the argument. |
| * |
| * @param <R> 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 // override for Javadoc |
| public <R> R query(TemporalQuery<R> query) { |
| if (query == TemporalQueries.localDate()) { |
| return (R) date; |
| } |
| return ChronoLocalDateTime.super.query(query); |
| } |
| |
| /** |
| * Adjusts the specified temporal object to have the same date and time as this object. |
| * <p> |
| * This returns a temporal object of the same observable type as the input |
| * with the date and time changed to be the same as this. |
| * <p> |
| * The adjustment is equivalent to using {@link Temporal#with(TemporalField, long)} |
| * twice, passing {@link ChronoField#EPOCH_DAY} and |
| * {@link ChronoField#NANO_OF_DAY} as the fields. |
| * <p> |
| * In most cases, it is clearer to reverse the calling pattern by using |
| * {@link Temporal#with(TemporalAdjuster)}: |
| * <pre> |
| * // these two lines are equivalent, but the second approach is recommended |
| * temporal = thisLocalDateTime.adjustInto(temporal); |
| * temporal = temporal.with(thisLocalDateTime); |
| * </pre> |
| * <p> |
| * 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 // override for Javadoc |
| public Temporal adjustInto(Temporal temporal) { |
| return ChronoLocalDateTime.super.adjustInto(temporal); |
| } |
| |
| /** |
| * Calculates the amount of time until another date-time in terms of the specified unit. |
| * <p> |
| * This calculates the amount of time between two {@code LocalDateTime} |
| * 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. |
| * The {@code Temporal} passed to this method is converted to a |
| * {@code LocalDateTime} using {@link #from(TemporalAccessor)}. |
| * For example, the amount in days between two date-times can be calculated |
| * using {@code startDateTime.until(endDateTime, DAYS)}. |
| * <p> |
| * The calculation returns a whole number, representing the number of |
| * complete units between the two date-times. |
| * For example, the amount in months between 2012-06-15T00:00 and 2012-08-14T23:59 |
| * will only be one month as it is one minute short of two months. |
| * <p> |
| * 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)}: |
| * <pre> |
| * // these two lines are equivalent |
| * amount = start.until(end, MONTHS); |
| * amount = MONTHS.between(start, end); |
| * </pre> |
| * The choice should be made based on which makes the code more readable. |
| * <p> |
| * 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. |
| * <p> |
| * 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. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param endExclusive the end date, exclusive, which is converted to a {@code LocalDateTime}, 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 a {@code LocalDateTime} |
| * @throws UnsupportedTemporalTypeException if the unit is not supported |
| * @throws ArithmeticException if numeric overflow occurs |
| */ |
| @Override |
| public long until(Temporal endExclusive, TemporalUnit unit) { |
| LocalDateTime end = LocalDateTime.from(endExclusive); |
| if (unit instanceof ChronoUnit) { |
| if (unit.isTimeBased()) { |
| long amount = date.daysUntil(end.date); |
| if (amount == 0) { |
| return time.until(end.time, unit); |
| } |
| long timePart = end.time.toNanoOfDay() - time.toNanoOfDay(); |
| if (amount > 0) { |
| amount--; // safe |
| timePart += NANOS_PER_DAY; // safe |
| } else { |
| amount++; // safe |
| timePart -= NANOS_PER_DAY; // safe |
| } |
| switch ((ChronoUnit) unit) { |
| case NANOS: |
| amount = Math.multiplyExact(amount, NANOS_PER_DAY); |
| break; |
| case MICROS: |
| amount = Math.multiplyExact(amount, MICROS_PER_DAY); |
| timePart = timePart / 1000; |
| break; |
| case MILLIS: |
| amount = Math.multiplyExact(amount, MILLIS_PER_DAY); |
| timePart = timePart / 1_000_000; |
| break; |
| case SECONDS: |
| amount = Math.multiplyExact(amount, SECONDS_PER_DAY); |
| timePart = timePart / NANOS_PER_SECOND; |
| break; |
| case MINUTES: |
| amount = Math.multiplyExact(amount, MINUTES_PER_DAY); |
| timePart = timePart / NANOS_PER_MINUTE; |
| break; |
| case HOURS: |
| amount = Math.multiplyExact(amount, HOURS_PER_DAY); |
| timePart = timePart / NANOS_PER_HOUR; |
| break; |
| case HALF_DAYS: |
| amount = Math.multiplyExact(amount, 2); |
| timePart = timePart / (NANOS_PER_HOUR * 12); |
| break; |
| } |
| return Math.addExact(amount, timePart); |
| } |
| LocalDate endDate = end.date; |
| if (endDate.isAfter(date) && end.time.isBefore(time)) { |
| endDate = endDate.minusDays(1); |
| } else if (endDate.isBefore(date) && end.time.isAfter(time)) { |
| endDate = endDate.plusDays(1); |
| } |
| return date.until(endDate, unit); |
| } |
| return unit.between(this, end); |
| } |
| |
| /** |
| * Formats this date-time using the specified formatter. |
| * <p> |
| * 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 |
| */ |
| @Override // override for Javadoc and performance |
| public String format(DateTimeFormatter formatter) { |
| Objects.requireNonNull(formatter, "formatter"); |
| return formatter.format(this); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Combines this date-time with an offset to create an {@code OffsetDateTime}. |
| * <p> |
| * This returns an {@code OffsetDateTime} formed from this date-time at the specified offset. |
| * All possible combinations of date-time and offset are valid. |
| * |
| * @param offset the offset to combine with, not null |
| * @return the offset date-time formed from this date-time and the specified offset, not null |
| */ |
| public OffsetDateTime atOffset(ZoneOffset offset) { |
| return OffsetDateTime.of(this, offset); |
| } |
| |
| /** |
| * Combines this date-time with a time-zone to create a {@code ZonedDateTime}. |
| * <p> |
| * This returns a {@code ZonedDateTime} formed from this date-time at the |
| * specified time-zone. The result will match this date-time as closely as possible. |
| * Time-zone rules, such as daylight savings, mean that not every local date-time |
| * is valid for the specified zone, thus the local date-time may be adjusted. |
| * <p> |
| * The local date-time is resolved to a single instant on the time-line. |
| * This is achieved by finding a valid offset from UTC/Greenwich for the local |
| * date-time as defined by the {@link ZoneRules rules} of the zone ID. |
| *<p> |
| * In most cases, there is only one valid offset for a local date-time. |
| * In the case of an overlap, where clocks are set back, there are two valid offsets. |
| * This method uses the earlier offset typically corresponding to "summer". |
| * <p> |
| * In the case of a gap, where clocks jump forward, there is no valid offset. |
| * Instead, the local date-time is adjusted to be later by the length of the gap. |
| * For a typical one hour daylight savings change, the local date-time will be |
| * moved one hour later into the offset typically corresponding to "summer". |
| * <p> |
| * To obtain the later offset during an overlap, call |
| * {@link ZonedDateTime#withLaterOffsetAtOverlap()} on the result of this method. |
| * To throw an exception when there is a gap or overlap, use |
| * {@link ZonedDateTime#ofStrict(LocalDateTime, ZoneOffset, ZoneId)}. |
| * |
| * @param zone the time-zone to use, not null |
| * @return the zoned date-time formed from this date-time, not null |
| */ |
| @Override |
| public ZonedDateTime atZone(ZoneId zone) { |
| return ZonedDateTime.of(this, zone); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Compares this date-time to another date-time. |
| * <p> |
| * The comparison is primarily based on the date-time, from earliest to latest. |
| * It is "consistent with equals", as defined by {@link Comparable}. |
| * <p> |
| * If all the date-times being compared are instances of {@code LocalDateTime}, |
| * then the comparison will be entirely based on the date-time. |
| * If some dates being compared are in different chronologies, then the |
| * chronology is also considered, see {@link ChronoLocalDateTime#compareTo}. |
| * |
| * @param other the other date-time to compare to, not null |
| * @return the comparator value, negative if less, positive if greater |
| */ |
| @Override // override for Javadoc and performance |
| public int compareTo(ChronoLocalDateTime<?> other) { |
| if (other instanceof LocalDateTime) { |
| return compareTo0((LocalDateTime) other); |
| } |
| return ChronoLocalDateTime.super.compareTo(other); |
| } |
| |
| private int compareTo0(LocalDateTime other) { |
| int cmp = date.compareTo0(other.toLocalDate()); |
| if (cmp == 0) { |
| cmp = time.compareTo(other.toLocalTime()); |
| } |
| return cmp; |
| } |
| |
| /** |
| * Checks if this date-time is after the specified date-time. |
| * <p> |
| * This checks to see if this date-time represents a point on the |
| * local time-line after the other date-time. |
| * <pre> |
| * LocalDate a = LocalDateTime.of(2012, 6, 30, 12, 00); |
| * LocalDate b = LocalDateTime.of(2012, 7, 1, 12, 00); |
| * a.isAfter(b) == false |
| * a.isAfter(a) == false |
| * b.isAfter(a) == true |
| * </pre> |
| * <p> |
| * This method only considers the position of the two date-times on the local time-line. |
| * It does not take into account the chronology, or calendar system. |
| * This is different from the comparison in {@link #compareTo(ChronoLocalDateTime)}, |
| * but is the same approach as {@link ChronoLocalDateTime#timeLineOrder()}. |
| * |
| * @param other the other date-time to compare to, not null |
| * @return true if this date-time is after the specified date-time |
| */ |
| @Override // override for Javadoc and performance |
| public boolean isAfter(ChronoLocalDateTime<?> other) { |
| if (other instanceof LocalDateTime) { |
| return compareTo0((LocalDateTime) other) > 0; |
| } |
| return ChronoLocalDateTime.super.isAfter(other); |
| } |
| |
| /** |
| * Checks if this date-time is before the specified date-time. |
| * <p> |
| * This checks to see if this date-time represents a point on the |
| * local time-line before the other date-time. |
| * <pre> |
| * LocalDate a = LocalDateTime.of(2012, 6, 30, 12, 00); |
| * LocalDate b = LocalDateTime.of(2012, 7, 1, 12, 00); |
| * a.isBefore(b) == true |
| * a.isBefore(a) == false |
| * b.isBefore(a) == false |
| * </pre> |
| * <p> |
| * This method only considers the position of the two date-times on the local time-line. |
| * It does not take into account the chronology, or calendar system. |
| * This is different from the comparison in {@link #compareTo(ChronoLocalDateTime)}, |
| * but is the same approach as {@link ChronoLocalDateTime#timeLineOrder()}. |
| * |
| * @param other the other date-time to compare to, not null |
| * @return true if this date-time is before the specified date-time |
| */ |
| @Override // override for Javadoc and performance |
| public boolean isBefore(ChronoLocalDateTime<?> other) { |
| if (other instanceof LocalDateTime) { |
| return compareTo0((LocalDateTime) other) < 0; |
| } |
| return ChronoLocalDateTime.super.isBefore(other); |
| } |
| |
| /** |
| * Checks if this date-time is equal to the specified date-time. |
| * <p> |
| * This checks to see if this date-time represents the same point on the |
| * local time-line as the other date-time. |
| * <pre> |
| * LocalDate a = LocalDateTime.of(2012, 6, 30, 12, 00); |
| * LocalDate b = LocalDateTime.of(2012, 7, 1, 12, 00); |
| * a.isEqual(b) == false |
| * a.isEqual(a) == true |
| * b.isEqual(a) == false |
| * </pre> |
| * <p> |
| * This method only considers the position of the two date-times on the local time-line. |
| * It does not take into account the chronology, or calendar system. |
| * This is different from the comparison in {@link #compareTo(ChronoLocalDateTime)}, |
| * but is the same approach as {@link ChronoLocalDateTime#timeLineOrder()}. |
| * |
| * @param other the other date-time to compare to, not null |
| * @return true if this date-time is equal to the specified date-time |
| */ |
| @Override // override for Javadoc and performance |
| public boolean isEqual(ChronoLocalDateTime<?> other) { |
| if (other instanceof LocalDateTime) { |
| return compareTo0((LocalDateTime) other) == 0; |
| } |
| return ChronoLocalDateTime.super.isEqual(other); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Checks if this date-time is equal to another date-time. |
| * <p> |
| * Compares this {@code LocalDateTime} with another ensuring that the date-time is the same. |
| * Only objects of type {@code LocalDateTime} are compared, other types return false. |
| * |
| * @param obj the object to check, null returns false |
| * @return true if this is equal to the other date-time |
| */ |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof LocalDateTime) { |
| LocalDateTime other = (LocalDateTime) obj; |
| return date.equals(other.date) && time.equals(other.time); |
| } |
| return false; |
| } |
| |
| /** |
| * A hash code for this date-time. |
| * |
| * @return a suitable hash code |
| */ |
| @Override |
| public int hashCode() { |
| return date.hashCode() ^ time.hashCode(); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Outputs this date-time as a {@code String}, such as {@code 2007-12-03T10:15:30}. |
| * <p> |
| * The output will be one of the following ISO-8601 formats: |
| * <ul> |
| * <li>{@code uuuu-MM-dd'T'HH:mm}</li> |
| * <li>{@code uuuu-MM-dd'T'HH:mm:ss}</li> |
| * <li>{@code uuuu-MM-dd'T'HH:mm:ss.SSS}</li> |
| * <li>{@code uuuu-MM-dd'T'HH:mm:ss.SSSSSS}</li> |
| * <li>{@code uuuu-MM-dd'T'HH:mm:ss.SSSSSSSSS}</li> |
| * </ul> |
| * 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 date.toString() + 'T' + time.toString(); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Writes the object using a |
| * <a href="../../serialized-form.html#java.time.Ser">dedicated serialized form</a>. |
| * @serialData |
| * <pre> |
| * out.writeByte(5); // identifies a LocalDateTime |
| * // the <a href="../../serialized-form.html#java.time.LocalDate">date</a> excluding the one byte header |
| * // the <a href="../../serialized-form.html#java.time.LocalTime">time</a> excluding the one byte header |
| * </pre> |
| * |
| * @return the instance of {@code Ser}, not null |
| */ |
| private Object writeReplace() { |
| return new Ser(Ser.LOCAL_DATE_TIME_TYPE, this); |
| } |
| |
| /** |
| * Defend against malicious streams. |
| * |
| * @throws InvalidObjectException always |
| */ |
| private void readObject(ObjectInputStream s) throws InvalidObjectException { |
| throw new InvalidObjectException("Deserialization via serialization delegate"); |
| } |
| |
| void writeExternal(DataOutput out) throws IOException { |
| date.writeExternal(out); |
| time.writeExternal(out); |
| } |
| |
| static LocalDateTime readExternal(DataInput in) throws IOException { |
| LocalDate date = LocalDate.readExternal(in); |
| LocalTime time = LocalTime.readExternal(in); |
| return LocalDateTime.of(date, time); |
| } |
| |
| } |