| /* |
| * Copyright (c) 2012, 2015, 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.chrono; |
| |
| import static java.time.temporal.ChronoField.INSTANT_SECONDS; |
| import static java.time.temporal.ChronoField.OFFSET_SECONDS; |
| import static java.time.temporal.ChronoUnit.FOREVER; |
| import static java.time.temporal.ChronoUnit.NANOS; |
| |
| import java.time.DateTimeException; |
| import java.time.Instant; |
| import java.time.LocalTime; |
| import java.time.ZoneId; |
| import java.time.ZoneOffset; |
| import java.time.ZonedDateTime; |
| import java.time.format.DateTimeFormatter; |
| 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; |
| |
| /** |
| * A date-time with a time-zone in an arbitrary chronology, |
| * intended for advanced globalization use cases. |
| * <p> |
| * <b>Most applications should declare method signatures, fields and variables |
| * as {@link ZonedDateTime}, not this interface.</b> |
| * <p> |
| * A {@code ChronoZonedDateTime} is the abstract representation of an offset date-time |
| * where the {@code Chronology chronology}, or calendar system, is pluggable. |
| * The date-time is defined in terms of fields expressed by {@link TemporalField}, |
| * where most common implementations are defined in {@link ChronoField}. |
| * The chronology defines how the calendar system operates and the meaning of |
| * the standard fields. |
| * |
| * <h3>When to use this interface</h3> |
| * The design of the API encourages the use of {@code ZonedDateTime} rather than this |
| * interface, even in the case where the application needs to deal with multiple |
| * calendar systems. The rationale for this is explored in detail in {@link ChronoLocalDate}. |
| * <p> |
| * Ensure that the discussion in {@code ChronoLocalDate} has been read and understood |
| * before using this interface. |
| * |
| * @implSpec |
| * This interface must be implemented with care to ensure other classes operate correctly. |
| * All implementations that can be instantiated must be final, immutable and thread-safe. |
| * Subclasses should be Serializable wherever possible. |
| * |
| * @param <D> the concrete type for the date of this date-time |
| * @since 1.8 |
| */ |
| public interface ChronoZonedDateTime<D extends ChronoLocalDate> |
| extends Temporal, Comparable<ChronoZonedDateTime<?>> { |
| |
| /** |
| * Gets a comparator that compares {@code ChronoZonedDateTime} in |
| * time-line order ignoring the chronology. |
| * <p> |
| * This comparator differs from the comparison in {@link #compareTo} in that it |
| * only compares the underlying instant and not the chronology. |
| * This allows dates in different calendar systems to be compared based |
| * on the position of the date-time on the instant time-line. |
| * The underlying comparison is equivalent to comparing the epoch-second and nano-of-second. |
| * |
| * @return a comparator that compares in time-line order ignoring the chronology |
| * @see #isAfter |
| * @see #isBefore |
| * @see #isEqual |
| */ |
| static Comparator<ChronoZonedDateTime<?>> timeLineOrder() { |
| return AbstractChronology.INSTANT_ORDER; |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Obtains an instance of {@code ChronoZonedDateTime} from a temporal object. |
| * <p> |
| * This creates a zoned 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 ChronoZonedDateTime}. |
| * <p> |
| * The conversion extracts and combines the chronology, date, time and zone |
| * from the temporal object. The behavior is equivalent to using |
| * {@link Chronology#zonedDateTime(TemporalAccessor)} with the extracted chronology. |
| * 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 ChronoZonedDateTime::from}. |
| * |
| * @param temporal the temporal object to convert, not null |
| * @return the date-time, not null |
| * @throws DateTimeException if unable to convert to a {@code ChronoZonedDateTime} |
| * @see Chronology#zonedDateTime(TemporalAccessor) |
| */ |
| static ChronoZonedDateTime<?> from(TemporalAccessor temporal) { |
| if (temporal instanceof ChronoZonedDateTime) { |
| return (ChronoZonedDateTime<?>) temporal; |
| } |
| Objects.requireNonNull(temporal, "temporal"); |
| Chronology chrono = temporal.query(TemporalQueries.chronology()); |
| if (chrono == null) { |
| throw new DateTimeException("Unable to obtain ChronoZonedDateTime from TemporalAccessor: " + temporal.getClass()); |
| } |
| return chrono.zonedDateTime(temporal); |
| } |
| |
| //----------------------------------------------------------------------- |
| @Override |
| default ValueRange range(TemporalField field) { |
| if (field instanceof ChronoField) { |
| if (field == INSTANT_SECONDS || field == OFFSET_SECONDS) { |
| return field.range(); |
| } |
| return toLocalDateTime().range(field); |
| } |
| return field.rangeRefinedBy(this); |
| } |
| |
| @Override |
| default int get(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 getOffset().getTotalSeconds(); |
| } |
| return toLocalDateTime().get(field); |
| } |
| return Temporal.super.get(field); |
| } |
| |
| @Override |
| default long getLong(TemporalField field) { |
| if (field instanceof ChronoField) { |
| switch ((ChronoField) field) { |
| case INSTANT_SECONDS: return toEpochSecond(); |
| case OFFSET_SECONDS: return getOffset().getTotalSeconds(); |
| } |
| return toLocalDateTime().getLong(field); |
| } |
| return field.getFrom(this); |
| } |
| |
| /** |
| * Gets the local date part of this date-time. |
| * <p> |
| * This returns a local date with the same year, month and day |
| * as this date-time. |
| * |
| * @return the date part of this date-time, not null |
| */ |
| default D toLocalDate() { |
| return toLocalDateTime().toLocalDate(); |
| } |
| |
| /** |
| * Gets the local time part of this date-time. |
| * <p> |
| * This returns a local time with the same hour, minute, second and |
| * nanosecond as this date-time. |
| * |
| * @return the time part of this date-time, not null |
| */ |
| default LocalTime toLocalTime() { |
| return toLocalDateTime().toLocalTime(); |
| } |
| |
| /** |
| * Gets the local date-time part of this date-time. |
| * <p> |
| * This returns a local date with the same year, month and day |
| * as this date-time. |
| * |
| * @return the local date-time part of this date-time, not null |
| */ |
| ChronoLocalDateTime<D> toLocalDateTime(); |
| |
| /** |
| * Gets the chronology of this date-time. |
| * <p> |
| * The {@code Chronology} represents the calendar system in use. |
| * The era and other fields in {@link ChronoField} are defined by the chronology. |
| * |
| * @return the chronology, not null |
| */ |
| default Chronology getChronology() { |
| return toLocalDate().getChronology(); |
| } |
| |
| /** |
| * Gets the zone offset, such as '+01:00'. |
| * <p> |
| * This is the offset of the local date-time from UTC/Greenwich. |
| * |
| * @return the zone offset, not null |
| */ |
| ZoneOffset getOffset(); |
| |
| /** |
| * Gets the zone ID, such as 'Europe/Paris'. |
| * <p> |
| * This returns the stored time-zone id used to determine the time-zone rules. |
| * |
| * @return the zone ID, not null |
| */ |
| ZoneId getZone(); |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Returns a copy of this date-time changing the zone offset to the |
| * earlier of the two valid offsets at a local time-line overlap. |
| * <p> |
| * This method only has any effect when the local time-line overlaps, such as |
| * at an autumn daylight savings cutover. In this scenario, there are two |
| * valid offsets for the local date-time. Calling this method will return |
| * a zoned date-time with the earlier of the two selected. |
| * <p> |
| * If this method is called when it is not an overlap, {@code this} |
| * is returned. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @return a {@code ChronoZonedDateTime} based on this date-time with the earlier offset, not null |
| * @throws DateTimeException if no rules can be found for the zone |
| * @throws DateTimeException if no rules are valid for this date-time |
| */ |
| ChronoZonedDateTime<D> withEarlierOffsetAtOverlap(); |
| |
| /** |
| * Returns a copy of this date-time changing the zone offset to the |
| * later of the two valid offsets at a local time-line overlap. |
| * <p> |
| * This method only has any effect when the local time-line overlaps, such as |
| * at an autumn daylight savings cutover. In this scenario, there are two |
| * valid offsets for the local date-time. Calling this method will return |
| * a zoned date-time with the later of the two selected. |
| * <p> |
| * If this method is called when it is not an overlap, {@code this} |
| * is returned. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @return a {@code ChronoZonedDateTime} based on this date-time with the later offset, not null |
| * @throws DateTimeException if no rules can be found for the zone |
| * @throws DateTimeException if no rules are valid for this date-time |
| */ |
| ChronoZonedDateTime<D> withLaterOffsetAtOverlap(); |
| |
| /** |
| * Returns a copy of this date-time with a different time-zone, |
| * retaining the local date-time if possible. |
| * <p> |
| * This method changes the time-zone and retains the local date-time. |
| * The local date-time is only changed if it is invalid for the new zone. |
| * <p> |
| * To change the zone and adjust the local date-time, |
| * use {@link #withZoneSameInstant(ZoneId)}. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param zone the time-zone to change to, not null |
| * @return a {@code ChronoZonedDateTime} based on this date-time with the requested zone, not null |
| */ |
| ChronoZonedDateTime<D> withZoneSameLocal(ZoneId zone); |
| |
| /** |
| * Returns a copy of this date-time with a different time-zone, |
| * retaining the instant. |
| * <p> |
| * This method changes the time-zone and retains the instant. |
| * This normally results in a change to the local date-time. |
| * <p> |
| * This method is based on retaining the same instant, thus gaps and overlaps |
| * in the local time-line have no effect on the result. |
| * <p> |
| * To change the offset while keeping the local time, |
| * use {@link #withZoneSameLocal(ZoneId)}. |
| * |
| * @param zone the time-zone to change to, not null |
| * @return a {@code ChronoZonedDateTime} based on this date-time with the requested zone, not null |
| * @throws DateTimeException if the result exceeds the supported date range |
| */ |
| ChronoZonedDateTime<D> withZoneSameInstant(ZoneId zone); |
| |
| /** |
| * Checks if the specified field is supported. |
| * <p> |
| * This checks if the specified field can be queried on this date-time. |
| * If false, then calling the {@link #range(TemporalField) range}, |
| * {@link #get(TemporalField) get} and {@link #with(TemporalField, long)} |
| * methods will throw an exception. |
| * <p> |
| * The set of supported fields is defined by the chronology and normally includes |
| * all {@code ChronoField} fields. |
| * <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 can be queried, false if not |
| */ |
| @Override |
| boolean isSupported(TemporalField field); |
| |
| /** |
| * 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> |
| * The set of supported units is defined by the chronology and normally includes |
| * all {@code ChronoUnit} units except {@code FOREVER}. |
| * <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 |
| default boolean isSupported(TemporalUnit unit) { |
| if (unit instanceof ChronoUnit) { |
| return unit != FOREVER; |
| } |
| return unit != null && unit.isSupportedBy(this); |
| } |
| |
| //----------------------------------------------------------------------- |
| // override for covariant return type |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| default ChronoZonedDateTime<D> with(TemporalAdjuster adjuster) { |
| return ChronoZonedDateTimeImpl.ensureValid(getChronology(), Temporal.super.with(adjuster)); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| ChronoZonedDateTime<D> with(TemporalField field, long newValue); |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| default ChronoZonedDateTime<D> plus(TemporalAmount amount) { |
| return ChronoZonedDateTimeImpl.ensureValid(getChronology(), Temporal.super.plus(amount)); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| ChronoZonedDateTime<D> plus(long amountToAdd, TemporalUnit unit); |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| default ChronoZonedDateTime<D> minus(TemporalAmount amount) { |
| return ChronoZonedDateTimeImpl.ensureValid(getChronology(), Temporal.super.minus(amount)); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| default ChronoZonedDateTime<D> minus(long amountToSubtract, TemporalUnit unit) { |
| return ChronoZonedDateTimeImpl.ensureValid(getChronology(), Temporal.super.minus(amountToSubtract, unit)); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * 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 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 |
| default <R> R query(TemporalQuery<R> query) { |
| if (query == TemporalQueries.zone() || query == TemporalQueries.zoneId()) { |
| return (R) getZone(); |
| } else if (query == TemporalQueries.offset()) { |
| return (R) getOffset(); |
| } else if (query == TemporalQueries.localTime()) { |
| return (R) toLocalTime(); |
| } else if (query == TemporalQueries.chronology()) { |
| return (R) getChronology(); |
| } else if (query == TemporalQueries.precision()) { |
| return (R) NANOS; |
| } |
| // inline TemporalAccessor.super.query(query) as an optimization |
| // non-JDK classes are not permitted to make this optimization |
| return query.queryFrom(this); |
| } |
| |
| /** |
| * Formats this date-time using the specified formatter. |
| * <p> |
| * This date-time will be passed to the formatter to produce a string. |
| * <p> |
| * The default implementation must behave as follows: |
| * <pre> |
| * return formatter.format(this); |
| * </pre> |
| * |
| * @param formatter the formatter to use, not null |
| * @return the formatted date-time string, not null |
| * @throws DateTimeException if an error occurs during printing |
| */ |
| default String format(DateTimeFormatter formatter) { |
| Objects.requireNonNull(formatter, "formatter"); |
| return formatter.format(this); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Converts this date-time to an {@code Instant}. |
| * <p> |
| * This returns an {@code Instant} representing the same point on the |
| * time-line as this date-time. The calculation combines the |
| * {@linkplain #toLocalDateTime() local date-time} and |
| * {@linkplain #getOffset() offset}. |
| * |
| * @return an {@code Instant} representing the same instant, not null |
| */ |
| default Instant toInstant() { |
| return Instant.ofEpochSecond(toEpochSecond(), toLocalTime().getNano()); |
| } |
| |
| /** |
| * Converts this date-time to the number of seconds from the epoch |
| * of 1970-01-01T00:00:00Z. |
| * <p> |
| * This uses the {@linkplain #toLocalDateTime() local date-time} and |
| * {@linkplain #getOffset() offset} to calculate the epoch-second value, |
| * which is the number of elapsed seconds from 1970-01-01T00:00:00Z. |
| * Instants on the time-line after the epoch are positive, earlier are negative. |
| * |
| * @return the number of seconds from the epoch of 1970-01-01T00:00:00Z |
| */ |
| default long toEpochSecond() { |
| long epochDay = toLocalDate().toEpochDay(); |
| long secs = epochDay * 86400 + toLocalTime().toSecondOfDay(); |
| secs -= getOffset().getTotalSeconds(); |
| return secs; |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Compares this date-time to another date-time, including the chronology. |
| * <p> |
| * The comparison is based first on the instant, then on the local date-time, |
| * then on the zone ID, then on the chronology. |
| * It is "consistent with equals", as defined by {@link Comparable}. |
| * <p> |
| * If all the date-time objects being compared are in the same chronology, then the |
| * additional chronology stage is not required. |
| * <p> |
| * This default implementation performs the comparison defined above. |
| * |
| * @param other the other date-time to compare to, not null |
| * @return the comparator value, negative if less, positive if greater |
| */ |
| @Override |
| default int compareTo(ChronoZonedDateTime<?> other) { |
| int cmp = Long.compare(toEpochSecond(), other.toEpochSecond()); |
| if (cmp == 0) { |
| cmp = toLocalTime().getNano() - other.toLocalTime().getNano(); |
| if (cmp == 0) { |
| cmp = toLocalDateTime().compareTo(other.toLocalDateTime()); |
| if (cmp == 0) { |
| cmp = getZone().getId().compareTo(other.getZone().getId()); |
| if (cmp == 0) { |
| cmp = getChronology().compareTo(other.getChronology()); |
| } |
| } |
| } |
| } |
| return cmp; |
| } |
| |
| /** |
| * Checks if the instant of this date-time is before that of the specified date-time. |
| * <p> |
| * 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());}. |
| * <p> |
| * This default implementation performs the comparison based on the epoch-second |
| * and nano-of-second. |
| * |
| * @param other the other date-time to compare to, not null |
| * @return true if this point is before the specified date-time |
| */ |
| default boolean isBefore(ChronoZonedDateTime<?> other) { |
| long thisEpochSec = toEpochSecond(); |
| long otherEpochSec = other.toEpochSecond(); |
| return thisEpochSec < otherEpochSec || |
| (thisEpochSec == otherEpochSec && toLocalTime().getNano() < other.toLocalTime().getNano()); |
| } |
| |
| /** |
| * Checks if the instant of this date-time is after that of the specified date-time. |
| * <p> |
| * 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().isAfter(dateTime2.toInstant());}. |
| * <p> |
| * This default implementation performs the comparison based on the epoch-second |
| * and nano-of-second. |
| * |
| * @param other the other date-time to compare to, not null |
| * @return true if this is after the specified date-time |
| */ |
| default boolean isAfter(ChronoZonedDateTime<?> other) { |
| long thisEpochSec = toEpochSecond(); |
| 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. |
| * <p> |
| * 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());}. |
| * <p> |
| * This default implementation performs the comparison based on the epoch-second |
| * and nano-of-second. |
| * |
| * @param other the other date-time to compare to, not null |
| * @return true if the instant equals the instant of the specified date-time |
| */ |
| default boolean isEqual(ChronoZonedDateTime<?> other) { |
| return toEpochSecond() == other.toEpochSecond() && |
| toLocalTime().getNano() == other.toLocalTime().getNano(); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Checks if this date-time is equal to another date-time. |
| * <p> |
| * The comparison is based on the offset date-time and the zone. |
| * To compare for the same instant on the time-line, use {@link #compareTo}. |
| * Only objects of type {@code ChronoZonedDateTime} 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 |
| boolean equals(Object obj); |
| |
| /** |
| * A hash code for this date-time. |
| * |
| * @return a suitable hash code |
| */ |
| @Override |
| int hashCode(); |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Outputs this date-time as a {@code String}. |
| * <p> |
| * The output will include the full zoned date-time. |
| * |
| * @return a string representation of this date-time, not null |
| */ |
| @Override |
| String toString(); |
| |
| } |
