author | chegar |
Sun, 17 Aug 2014 15:54:13 +0100 | |
changeset 25859 | 3317bb8137f4 |
parent 24256 | jdk/src/share/classes/java/time/chrono/ChronoZonedDateTime.java@da9a41004459 |
child 44600 | 2027ac642982 |
permissions | -rw-r--r-- |
15658 | 1 |
/* |
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* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* |
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* This file is available under and governed by the GNU General Public |
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* License version 2 only, as published by the Free Software Foundation. |
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* However, the following notice accompanied the original version of this |
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* file: |
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* |
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* Copyright (c) 2007-2012, Stephen Colebourne & Michael Nascimento Santos |
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* |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* * Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* |
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* * Redistributions in binary form must reproduce the above copyright notice, |
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* this list of conditions and the following disclaimer in the documentation |
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* and/or other materials provided with the distribution. |
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* |
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* * Neither the name of JSR-310 nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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package java.time.chrono; |
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import static java.time.temporal.ChronoField.INSTANT_SECONDS; |
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import static java.time.temporal.ChronoField.OFFSET_SECONDS; |
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import static java.time.temporal.ChronoUnit.FOREVER; |
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import static java.time.temporal.ChronoUnit.NANOS; |
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import java.time.DateTimeException; |
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import java.time.Instant; |
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import java.time.LocalTime; |
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import java.time.ZoneId; |
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import java.time.ZoneOffset; |
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import java.time.ZonedDateTime; |
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import java.time.format.DateTimeFormatter; |
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import java.time.temporal.ChronoField; |
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import java.time.temporal.ChronoUnit; |
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import java.time.temporal.Temporal; |
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import java.time.temporal.TemporalAccessor; |
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import java.time.temporal.TemporalAdjuster; |
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import java.time.temporal.TemporalAmount; |
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import java.time.temporal.TemporalField; |
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import java.time.temporal.TemporalQueries; |
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import java.time.temporal.TemporalQuery; |
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import java.time.temporal.TemporalUnit; |
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import java.time.temporal.UnsupportedTemporalTypeException; |
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import java.time.temporal.ValueRange; |
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import java.util.Comparator; |
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import java.util.Objects; |
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/** |
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* A date-time with a time-zone in an arbitrary chronology, |
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* intended for advanced globalization use cases. |
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* <p> |
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* <b>Most applications should declare method signatures, fields and variables |
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* as {@link ZonedDateTime}, not this interface.</b> |
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* <p> |
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* A {@code ChronoZonedDateTime} is the abstract representation of an offset date-time |
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* where the {@code Chronology chronology}, or calendar system, is pluggable. |
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* The date-time is defined in terms of fields expressed by {@link TemporalField}, |
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* where most common implementations are defined in {@link ChronoField}. |
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* The chronology defines how the calendar system operates and the meaning of |
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* the standard fields. |
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* |
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* <h3>When to use this interface</h3> |
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* The design of the API encourages the use of {@code ZonedDateTime} rather than this |
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* interface, even in the case where the application needs to deal with multiple |
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* calendar systems. The rationale for this is explored in detail in {@link ChronoLocalDate}. |
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* <p> |
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* Ensure that the discussion in {@code ChronoLocalDate} has been read and understood |
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* before using this interface. |
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* |
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* @implSpec |
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* This interface must be implemented with care to ensure other classes operate correctly. |
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* All implementations that can be instantiated must be final, immutable and thread-safe. |
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* Subclasses should be Serializable wherever possible. |
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* |
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* @param <D> the concrete type for the date of this date-time |
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* @since 1.8 |
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*/ |
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public interface ChronoZonedDateTime<D extends ChronoLocalDate> |
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extends Temporal, Comparable<ChronoZonedDateTime<?>> { |
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/** |
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* Gets a comparator that compares {@code ChronoZonedDateTime} in |
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* time-line order ignoring the chronology. |
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* <p> |
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* This comparator differs from the comparison in {@link #compareTo} in that it |
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* only compares the underlying instant and not the chronology. |
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* This allows dates in different calendar systems to be compared based |
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* on the position of the date-time on the instant time-line. |
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* The underlying comparison is equivalent to comparing the epoch-second and nano-of-second. |
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* |
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* @return a comparator that compares in time-line order ignoring the chronology |
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* @see #isAfter |
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* @see #isBefore |
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* @see #isEqual |
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*/ |
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static Comparator<ChronoZonedDateTime<?>> timeLineOrder() { |
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return AbstractChronology.INSTANT_ORDER; |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Obtains an instance of {@code ChronoZonedDateTime} from a temporal object. |
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* <p> |
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* This creates a zoned date-time based on the specified temporal. |
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* A {@code TemporalAccessor} represents an arbitrary set of date and time information, |
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* which this factory converts to an instance of {@code ChronoZonedDateTime}. |
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* <p> |
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* The conversion extracts and combines the chronology, date, time and zone |
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* from the temporal object. The behavior is equivalent to using |
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* {@link Chronology#zonedDateTime(TemporalAccessor)} with the extracted chronology. |
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* Implementations are permitted to perform optimizations such as accessing |
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* those fields that are equivalent to the relevant objects. |
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* <p> |
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* This method matches the signature of the functional interface {@link TemporalQuery} |
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* allowing it to be used as a query via method reference, {@code ChronoZonedDateTime::from}. |
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* |
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* @param temporal the temporal object to convert, not null |
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* @return the date-time, not null |
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* @throws DateTimeException if unable to convert to a {@code ChronoZonedDateTime} |
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* @see Chronology#zonedDateTime(TemporalAccessor) |
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*/ |
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static ChronoZonedDateTime<?> from(TemporalAccessor temporal) { |
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if (temporal instanceof ChronoZonedDateTime) { |
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return (ChronoZonedDateTime<?>) temporal; |
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} |
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Objects.requireNonNull(temporal, "temporal"); |
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Chronology chrono = temporal.query(TemporalQueries.chronology()); |
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if (chrono == null) { |
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throw new DateTimeException("Unable to obtain ChronoZonedDateTime from TemporalAccessor: " + temporal.getClass()); |
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} |
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return chrono.zonedDateTime(temporal); |
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} |
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//----------------------------------------------------------------------- |
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@Override |
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default ValueRange range(TemporalField field) { |
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if (field instanceof ChronoField) { |
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if (field == INSTANT_SECONDS || field == OFFSET_SECONDS) { |
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return field.range(); |
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} |
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return toLocalDateTime().range(field); |
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} |
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return field.rangeRefinedBy(this); |
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} |
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@Override |
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default int get(TemporalField field) { |
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if (field instanceof ChronoField) { |
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switch ((ChronoField) field) { |
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case INSTANT_SECONDS: |
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throw new UnsupportedTemporalTypeException("Invalid field 'InstantSeconds' for get() method, use getLong() instead"); |
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case OFFSET_SECONDS: |
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return getOffset().getTotalSeconds(); |
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} |
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return toLocalDateTime().get(field); |
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} |
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return Temporal.super.get(field); |
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} |
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@Override |
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default long getLong(TemporalField field) { |
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if (field instanceof ChronoField) { |
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switch ((ChronoField) field) { |
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case INSTANT_SECONDS: return toEpochSecond(); |
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case OFFSET_SECONDS: return getOffset().getTotalSeconds(); |
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} |
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return toLocalDateTime().getLong(field); |
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} |
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return field.getFrom(this); |
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} |
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/** |
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* Gets the local date part of this date-time. |
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* <p> |
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* This returns a local date with the same year, month and day |
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* as this date-time. |
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* |
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* @return the date part of this date-time, not null |
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*/ |
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default D toLocalDate() { |
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return toLocalDateTime().toLocalDate(); |
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} |
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/** |
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* Gets the local time part of this date-time. |
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* <p> |
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* This returns a local time with the same hour, minute, second and |
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* nanosecond as this date-time. |
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* |
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* @return the time part of this date-time, not null |
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*/ |
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default LocalTime toLocalTime() { |
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return toLocalDateTime().toLocalTime(); |
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} |
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/** |
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* Gets the local date-time part of this date-time. |
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* <p> |
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* This returns a local date with the same year, month and day |
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* as this date-time. |
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* |
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* @return the local date-time part of this date-time, not null |
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*/ |
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ChronoLocalDateTime<D> toLocalDateTime(); |
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/** |
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* Gets the chronology of this date-time. |
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* <p> |
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* The {@code Chronology} represents the calendar system in use. |
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* The era and other fields in {@link ChronoField} are defined by the chronology. |
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* |
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* @return the chronology, not null |
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*/ |
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default Chronology getChronology() { |
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return toLocalDate().getChronology(); |
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} |
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/** |
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* Gets the zone offset, such as '+01:00'. |
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* <p> |
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* This is the offset of the local date-time from UTC/Greenwich. |
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* |
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* @return the zone offset, not null |
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*/ |
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ZoneOffset getOffset(); |
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/** |
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* Gets the zone ID, such as 'Europe/Paris'. |
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* <p> |
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* This returns the stored time-zone id used to determine the time-zone rules. |
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* |
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* @return the zone ID, not null |
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*/ |
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ZoneId getZone(); |
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//----------------------------------------------------------------------- |
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/** |
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* Returns a copy of this date-time changing the zone offset to the |
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* earlier of the two valid offsets at a local time-line overlap. |
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* <p> |
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* This method only has any effect when the local time-line overlaps, such as |
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* at an autumn daylight savings cutover. In this scenario, there are two |
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* valid offsets for the local date-time. Calling this method will return |
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* a zoned date-time with the earlier of the two selected. |
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* <p> |
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* If this method is called when it is not an overlap, {@code this} |
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* is returned. |
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* <p> |
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* This instance is immutable and unaffected by this method call. |
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* |
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* @return a {@code ChronoZonedDateTime} based on this date-time with the earlier offset, not null |
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* @throws DateTimeException if no rules can be found for the zone |
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* @throws DateTimeException if no rules are valid for this date-time |
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*/ |
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ChronoZonedDateTime<D> withEarlierOffsetAtOverlap(); |
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/** |
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* Returns a copy of this date-time changing the zone offset to the |
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* later of the two valid offsets at a local time-line overlap. |
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* <p> |
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* This method only has any effect when the local time-line overlaps, such as |
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* at an autumn daylight savings cutover. In this scenario, there are two |
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* valid offsets for the local date-time. Calling this method will return |
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* a zoned date-time with the later of the two selected. |
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* <p> |
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* If this method is called when it is not an overlap, {@code this} |
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* is returned. |
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* <p> |
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* This instance is immutable and unaffected by this method call. |
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* |
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* @return a {@code ChronoZonedDateTime} based on this date-time with the later offset, not null |
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* @throws DateTimeException if no rules can be found for the zone |
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* @throws DateTimeException if no rules are valid for this date-time |
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*/ |
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ChronoZonedDateTime<D> withLaterOffsetAtOverlap(); |
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/** |
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* Returns a copy of this date-time with a different time-zone, |
15658 | 322 |
* retaining the local date-time if possible. |
323 |
* <p> |
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* This method changes the time-zone and retains the local date-time. |
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* The local date-time is only changed if it is invalid for the new zone. |
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* <p> |
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* To change the zone and adjust the local date-time, |
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* use {@link #withZoneSameInstant(ZoneId)}. |
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* <p> |
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330 |
* This instance is immutable and unaffected by this method call. |
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* |
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* @param zone the time-zone to change to, not null |
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* @return a {@code ChronoZonedDateTime} based on this date-time with the requested zone, not null |
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*/ |
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ChronoZonedDateTime<D> withZoneSameLocal(ZoneId zone); |
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337 |
/** |
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338 |
* Returns a copy of this date-time with a different time-zone, |
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* retaining the instant. |
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340 |
* <p> |
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341 |
* This method changes the time-zone and retains the instant. |
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342 |
* This normally results in a change to the local date-time. |
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343 |
* <p> |
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344 |
* This method is based on retaining the same instant, thus gaps and overlaps |
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345 |
* in the local time-line have no effect on the result. |
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346 |
* <p> |
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347 |
* To change the offset while keeping the local time, |
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348 |
* use {@link #withZoneSameLocal(ZoneId)}. |
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349 |
* |
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350 |
* @param zone the time-zone to change to, not null |
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351 |
* @return a {@code ChronoZonedDateTime} based on this date-time with the requested zone, not null |
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352 |
* @throws DateTimeException if the result exceeds the supported date range |
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353 |
*/ |
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354 |
ChronoZonedDateTime<D> withZoneSameInstant(ZoneId zone); |
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355 |
||
19030 | 356 |
/** |
357 |
* Checks if the specified field is supported. |
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358 |
* <p> |
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359 |
* This checks if the specified field can be queried on this date-time. |
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360 |
* If false, then calling the {@link #range(TemporalField) range}, |
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361 |
* {@link #get(TemporalField) get} and {@link #with(TemporalField, long)} |
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362 |
* methods will throw an exception. |
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363 |
* <p> |
|
364 |
* The set of supported fields is defined by the chronology and normally includes |
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365 |
* all {@code ChronoField} fields. |
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366 |
* <p> |
|
367 |
* If the field is not a {@code ChronoField}, then the result of this method |
|
368 |
* is obtained by invoking {@code TemporalField.isSupportedBy(TemporalAccessor)} |
|
369 |
* passing {@code this} as the argument. |
|
370 |
* Whether the field is supported is determined by the field. |
|
371 |
* |
|
372 |
* @param field the field to check, null returns false |
|
373 |
* @return true if the field can be queried, false if not |
|
374 |
*/ |
|
375 |
@Override |
|
16852 | 376 |
boolean isSupported(TemporalField field); |
15658 | 377 |
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19030 | 378 |
/** |
379 |
* Checks if the specified unit is supported. |
|
380 |
* <p> |
|
381 |
* This checks if the specified unit can be added to or subtracted from this date-time. |
|
382 |
* If false, then calling the {@link #plus(long, TemporalUnit)} and |
|
383 |
* {@link #minus(long, TemporalUnit) minus} methods will throw an exception. |
|
384 |
* <p> |
|
385 |
* The set of supported units is defined by the chronology and normally includes |
|
386 |
* all {@code ChronoUnit} units except {@code FOREVER}. |
|
387 |
* <p> |
|
388 |
* If the unit is not a {@code ChronoUnit}, then the result of this method |
|
389 |
* is obtained by invoking {@code TemporalUnit.isSupportedBy(Temporal)} |
|
390 |
* passing {@code this} as the argument. |
|
391 |
* Whether the unit is supported is determined by the unit. |
|
392 |
* |
|
393 |
* @param unit the unit to check, null returns false |
|
394 |
* @return true if the unit can be added/subtracted, false if not |
|
395 |
*/ |
|
396 |
@Override |
|
397 |
default boolean isSupported(TemporalUnit unit) { |
|
398 |
if (unit instanceof ChronoUnit) { |
|
399 |
return unit != FOREVER; |
|
400 |
} |
|
401 |
return unit != null && unit.isSupportedBy(this); |
|
402 |
} |
|
403 |
||
15658 | 404 |
//----------------------------------------------------------------------- |
405 |
// override for covariant return type |
|
406 |
/** |
|
407 |
* {@inheritDoc} |
|
408 |
* @throws DateTimeException {@inheritDoc} |
|
409 |
* @throws ArithmeticException {@inheritDoc} |
|
410 |
*/ |
|
411 |
@Override |
|
16852 | 412 |
default ChronoZonedDateTime<D> with(TemporalAdjuster adjuster) { |
20522 | 413 |
return ChronoZonedDateTimeImpl.ensureValid(getChronology(), Temporal.super.with(adjuster)); |
15658 | 414 |
} |
415 |
||
416 |
/** |
|
417 |
* {@inheritDoc} |
|
418 |
* @throws DateTimeException {@inheritDoc} |
|
419 |
* @throws ArithmeticException {@inheritDoc} |
|
420 |
*/ |
|
421 |
@Override |
|
422 |
ChronoZonedDateTime<D> with(TemporalField field, long newValue); |
|
423 |
||
424 |
/** |
|
425 |
* {@inheritDoc} |
|
426 |
* @throws DateTimeException {@inheritDoc} |
|
427 |
* @throws ArithmeticException {@inheritDoc} |
|
428 |
*/ |
|
429 |
@Override |
|
16852 | 430 |
default ChronoZonedDateTime<D> plus(TemporalAmount amount) { |
20522 | 431 |
return ChronoZonedDateTimeImpl.ensureValid(getChronology(), Temporal.super.plus(amount)); |
15658 | 432 |
} |
433 |
||
434 |
/** |
|
435 |
* {@inheritDoc} |
|
436 |
* @throws DateTimeException {@inheritDoc} |
|
437 |
* @throws ArithmeticException {@inheritDoc} |
|
438 |
*/ |
|
439 |
@Override |
|
440 |
ChronoZonedDateTime<D> plus(long amountToAdd, TemporalUnit unit); |
|
441 |
||
442 |
/** |
|
443 |
* {@inheritDoc} |
|
444 |
* @throws DateTimeException {@inheritDoc} |
|
445 |
* @throws ArithmeticException {@inheritDoc} |
|
446 |
*/ |
|
447 |
@Override |
|
16852 | 448 |
default ChronoZonedDateTime<D> minus(TemporalAmount amount) { |
20522 | 449 |
return ChronoZonedDateTimeImpl.ensureValid(getChronology(), Temporal.super.minus(amount)); |
15658 | 450 |
} |
451 |
||
452 |
/** |
|
453 |
* {@inheritDoc} |
|
454 |
* @throws DateTimeException {@inheritDoc} |
|
455 |
* @throws ArithmeticException {@inheritDoc} |
|
456 |
*/ |
|
457 |
@Override |
|
16852 | 458 |
default ChronoZonedDateTime<D> minus(long amountToSubtract, TemporalUnit unit) { |
20522 | 459 |
return ChronoZonedDateTimeImpl.ensureValid(getChronology(), Temporal.super.minus(amountToSubtract, unit)); |
15658 | 460 |
} |
461 |
||
462 |
//----------------------------------------------------------------------- |
|
463 |
/** |
|
464 |
* Queries this date-time using the specified query. |
|
465 |
* <p> |
|
466 |
* This queries this date-time using the specified query strategy object. |
|
467 |
* The {@code TemporalQuery} object defines the logic to be used to |
|
468 |
* obtain the result. Read the documentation of the query to understand |
|
469 |
* what the result of this method will be. |
|
470 |
* <p> |
|
471 |
* The result of this method is obtained by invoking the |
|
24256
da9a41004459
8034906: Fix typos, errors and Javadoc differences in java.time
scolebourne
parents:
21278
diff
changeset
|
472 |
* {@link TemporalQuery#queryFrom(TemporalAccessor)} method on the |
15658 | 473 |
* specified query passing {@code this} as the argument. |
474 |
* |
|
475 |
* @param <R> the type of the result |
|
476 |
* @param query the query to invoke, not null |
|
477 |
* @return the query result, null may be returned (defined by the query) |
|
478 |
* @throws DateTimeException if unable to query (defined by the query) |
|
479 |
* @throws ArithmeticException if numeric overflow occurs (defined by the query) |
|
480 |
*/ |
|
481 |
@SuppressWarnings("unchecked") |
|
482 |
@Override |
|
16852 | 483 |
default <R> R query(TemporalQuery<R> query) { |
20795 | 484 |
if (query == TemporalQueries.zone() || query == TemporalQueries.zoneId()) { |
15658 | 485 |
return (R) getZone(); |
20795 | 486 |
} else if (query == TemporalQueries.offset()) { |
15658 | 487 |
return (R) getOffset(); |
20795 | 488 |
} else if (query == TemporalQueries.localTime()) { |
15658 | 489 |
return (R) toLocalTime(); |
20795 | 490 |
} else if (query == TemporalQueries.chronology()) { |
20522 | 491 |
return (R) getChronology(); |
20795 | 492 |
} else if (query == TemporalQueries.precision()) { |
15658 | 493 |
return (R) NANOS; |
494 |
} |
|
495 |
// inline TemporalAccessor.super.query(query) as an optimization |
|
496 |
// non-JDK classes are not permitted to make this optimization |
|
497 |
return query.queryFrom(this); |
|
498 |
} |
|
499 |
||
16852 | 500 |
/** |
501 |
* Formats this date-time using the specified formatter. |
|
502 |
* <p> |
|
503 |
* This date-time will be passed to the formatter to produce a string. |
|
504 |
* <p> |
|
505 |
* The default implementation must behave as follows: |
|
506 |
* <pre> |
|
507 |
* return formatter.format(this); |
|
508 |
* </pre> |
|
509 |
* |
|
510 |
* @param formatter the formatter to use, not null |
|
511 |
* @return the formatted date-time string, not null |
|
512 |
* @throws DateTimeException if an error occurs during printing |
|
513 |
*/ |
|
514 |
default String format(DateTimeFormatter formatter) { |
|
515 |
Objects.requireNonNull(formatter, "formatter"); |
|
516 |
return formatter.format(this); |
|
517 |
} |
|
518 |
||
15658 | 519 |
//----------------------------------------------------------------------- |
520 |
/** |
|
521 |
* Converts this date-time to an {@code Instant}. |
|
522 |
* <p> |
|
523 |
* This returns an {@code Instant} representing the same point on the |
|
524 |
* time-line as this date-time. The calculation combines the |
|
525 |
* {@linkplain #toLocalDateTime() local date-time} and |
|
526 |
* {@linkplain #getOffset() offset}. |
|
527 |
* |
|
528 |
* @return an {@code Instant} representing the same instant, not null |
|
529 |
*/ |
|
16852 | 530 |
default Instant toInstant() { |
15658 | 531 |
return Instant.ofEpochSecond(toEpochSecond(), toLocalTime().getNano()); |
532 |
} |
|
533 |
||
534 |
/** |
|
535 |
* Converts this date-time to the number of seconds from the epoch |
|
536 |
* of 1970-01-01T00:00:00Z. |
|
537 |
* <p> |
|
538 |
* This uses the {@linkplain #toLocalDateTime() local date-time} and |
|
539 |
* {@linkplain #getOffset() offset} to calculate the epoch-second value, |
|
540 |
* which is the number of elapsed seconds from 1970-01-01T00:00:00Z. |
|
541 |
* Instants on the time-line after the epoch are positive, earlier are negative. |
|
542 |
* |
|
543 |
* @return the number of seconds from the epoch of 1970-01-01T00:00:00Z |
|
544 |
*/ |
|
16852 | 545 |
default long toEpochSecond() { |
15658 | 546 |
long epochDay = toLocalDate().toEpochDay(); |
547 |
long secs = epochDay * 86400 + toLocalTime().toSecondOfDay(); |
|
548 |
secs -= getOffset().getTotalSeconds(); |
|
549 |
return secs; |
|
550 |
} |
|
551 |
||
552 |
//----------------------------------------------------------------------- |
|
553 |
/** |
|
554 |
* Compares this date-time to another date-time, including the chronology. |
|
555 |
* <p> |
|
556 |
* The comparison is based first on the instant, then on the local date-time, |
|
557 |
* then on the zone ID, then on the chronology. |
|
558 |
* It is "consistent with equals", as defined by {@link Comparable}. |
|
559 |
* <p> |
|
560 |
* If all the date-time objects being compared are in the same chronology, then the |
|
561 |
* additional chronology stage is not required. |
|
562 |
* <p> |
|
563 |
* This default implementation performs the comparison defined above. |
|
564 |
* |
|
565 |
* @param other the other date-time to compare to, not null |
|
566 |
* @return the comparator value, negative if less, positive if greater |
|
567 |
*/ |
|
568 |
@Override |
|
16852 | 569 |
default int compareTo(ChronoZonedDateTime<?> other) { |
15658 | 570 |
int cmp = Long.compare(toEpochSecond(), other.toEpochSecond()); |
571 |
if (cmp == 0) { |
|
572 |
cmp = toLocalTime().getNano() - other.toLocalTime().getNano(); |
|
573 |
if (cmp == 0) { |
|
574 |
cmp = toLocalDateTime().compareTo(other.toLocalDateTime()); |
|
575 |
if (cmp == 0) { |
|
576 |
cmp = getZone().getId().compareTo(other.getZone().getId()); |
|
577 |
if (cmp == 0) { |
|
20522 | 578 |
cmp = getChronology().compareTo(other.getChronology()); |
15658 | 579 |
} |
580 |
} |
|
581 |
} |
|
582 |
} |
|
583 |
return cmp; |
|
584 |
} |
|
585 |
||
586 |
/** |
|
587 |
* Checks if the instant of this date-time is before that of the specified date-time. |
|
588 |
* <p> |
|
589 |
* This method differs from the comparison in {@link #compareTo} in that it |
|
590 |
* only compares the instant of the date-time. This is equivalent to using |
|
591 |
* {@code dateTime1.toInstant().isBefore(dateTime2.toInstant());}. |
|
592 |
* <p> |
|
593 |
* This default implementation performs the comparison based on the epoch-second |
|
594 |
* and nano-of-second. |
|
595 |
* |
|
596 |
* @param other the other date-time to compare to, not null |
|
597 |
* @return true if this point is before the specified date-time |
|
598 |
*/ |
|
16852 | 599 |
default boolean isBefore(ChronoZonedDateTime<?> other) { |
15658 | 600 |
long thisEpochSec = toEpochSecond(); |
601 |
long otherEpochSec = other.toEpochSecond(); |
|
602 |
return thisEpochSec < otherEpochSec || |
|
603 |
(thisEpochSec == otherEpochSec && toLocalTime().getNano() < other.toLocalTime().getNano()); |
|
604 |
} |
|
605 |
||
606 |
/** |
|
607 |
* Checks if the instant of this date-time is after that of the specified date-time. |
|
608 |
* <p> |
|
609 |
* This method differs from the comparison in {@link #compareTo} in that it |
|
610 |
* only compares the instant of the date-time. This is equivalent to using |
|
611 |
* {@code dateTime1.toInstant().isAfter(dateTime2.toInstant());}. |
|
612 |
* <p> |
|
613 |
* This default implementation performs the comparison based on the epoch-second |
|
614 |
* and nano-of-second. |
|
615 |
* |
|
616 |
* @param other the other date-time to compare to, not null |
|
617 |
* @return true if this is after the specified date-time |
|
618 |
*/ |
|
16852 | 619 |
default boolean isAfter(ChronoZonedDateTime<?> other) { |
15658 | 620 |
long thisEpochSec = toEpochSecond(); |
621 |
long otherEpochSec = other.toEpochSecond(); |
|
622 |
return thisEpochSec > otherEpochSec || |
|
623 |
(thisEpochSec == otherEpochSec && toLocalTime().getNano() > other.toLocalTime().getNano()); |
|
624 |
} |
|
625 |
||
626 |
/** |
|
627 |
* Checks if the instant of this date-time is equal to that of the specified date-time. |
|
628 |
* <p> |
|
629 |
* This method differs from the comparison in {@link #compareTo} and {@link #equals} |
|
630 |
* in that it only compares the instant of the date-time. This is equivalent to using |
|
631 |
* {@code dateTime1.toInstant().equals(dateTime2.toInstant());}. |
|
632 |
* <p> |
|
633 |
* This default implementation performs the comparison based on the epoch-second |
|
634 |
* and nano-of-second. |
|
635 |
* |
|
636 |
* @param other the other date-time to compare to, not null |
|
637 |
* @return true if the instant equals the instant of the specified date-time |
|
638 |
*/ |
|
16852 | 639 |
default boolean isEqual(ChronoZonedDateTime<?> other) { |
15658 | 640 |
return toEpochSecond() == other.toEpochSecond() && |
641 |
toLocalTime().getNano() == other.toLocalTime().getNano(); |
|
642 |
} |
|
643 |
||
644 |
//----------------------------------------------------------------------- |
|
645 |
/** |
|
646 |
* Checks if this date-time is equal to another date-time. |
|
647 |
* <p> |
|
648 |
* The comparison is based on the offset date-time and the zone. |
|
649 |
* To compare for the same instant on the time-line, use {@link #compareTo}. |
|
650 |
* Only objects of type {@code ChronoZonedDateTime} are compared, other types return false. |
|
651 |
* |
|
652 |
* @param obj the object to check, null returns false |
|
653 |
* @return true if this is equal to the other date-time |
|
654 |
*/ |
|
655 |
@Override |
|
656 |
boolean equals(Object obj); |
|
657 |
||
658 |
/** |
|
659 |
* A hash code for this date-time. |
|
660 |
* |
|
661 |
* @return a suitable hash code |
|
662 |
*/ |
|
663 |
@Override |
|
664 |
int hashCode(); |
|
665 |
||
666 |
//----------------------------------------------------------------------- |
|
667 |
/** |
|
668 |
* Outputs this date-time as a {@code String}. |
|
669 |
* <p> |
|
16852 | 670 |
* The output will include the full zoned date-time. |
15658 | 671 |
* |
672 |
* @return a string representation of this date-time, not null |
|
673 |
*/ |
|
674 |
@Override |
|
675 |
String toString(); |
|
676 |
||
677 |
} |