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/*
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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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* Copyright (c) 2011-2012, 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.temporal;
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import static java.time.DayOfWeek.THURSDAY;
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import static java.time.DayOfWeek.WEDNESDAY;
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import static java.time.temporal.ChronoField.DAY_OF_WEEK;
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import static java.time.temporal.ChronoField.DAY_OF_YEAR;
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import static java.time.temporal.ChronoField.EPOCH_DAY;
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import static java.time.temporal.ChronoField.MONTH_OF_YEAR;
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import static java.time.temporal.ChronoField.YEAR;
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import static java.time.temporal.ChronoUnit.DAYS;
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import static java.time.temporal.ChronoUnit.FOREVER;
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import static java.time.temporal.ChronoUnit.MONTHS;
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import static java.time.temporal.ChronoUnit.WEEKS;
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import static java.time.temporal.ChronoUnit.YEARS;
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import java.time.Duration;
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import java.time.LocalDate;
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import java.time.chrono.Chronology;
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import java.time.chrono.IsoChronology;
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import java.time.format.ResolverStyle;
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import java.util.HashMap;
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import java.util.Locale;
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import java.util.Map;
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import java.util.Objects;
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import java.util.ResourceBundle;
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import sun.util.locale.provider.LocaleProviderAdapter;
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import sun.util.locale.provider.LocaleResources;
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/**
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* Fields and units specific to the ISO-8601 calendar system,
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* including quarter-of-year and week-based-year.
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* <p>
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* This class defines fields and units that are specific to the ISO calendar system.
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*
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* <h3>Quarter of year</h3>
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* The ISO-8601 standard is based on the standard civic 12 month year.
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* This is commonly divided into four quarters, often abbreviated as Q1, Q2, Q3 and Q4.
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* <p>
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* January, February and March are in Q1.
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* April, May and June are in Q2.
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* July, August and September are in Q3.
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* October, November and December are in Q4.
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* <p>
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* The complete date is expressed using three fields:
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* <p><ul>
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* <li>{@link #DAY_OF_QUARTER DAY_OF_QUARTER} - the day within the quarter, from 1 to 90, 91 or 92
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* <li>{@link #QUARTER_OF_YEAR QUARTER_OF_YEAR} - the week within the week-based-year
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* <li>{@link ChronoField#YEAR YEAR} - the standard ISO year
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* </ul><p>
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*
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* <h3>Week based years</h3>
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* The ISO-8601 standard was originally intended as a data interchange format,
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* defining a string format for dates and times. However, it also defines an
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* alternate way of expressing the date, based on the concept of week-based-year.
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* <p>
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* The date is expressed using three fields:
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* <p><ul>
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* <li>{@link ChronoField#DAY_OF_WEEK DAY_OF_WEEK} - the standard field defining the
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* day-of-week from Monday (1) to Sunday (7)
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* <li>{@link #WEEK_OF_WEEK_BASED_YEAR} - the week within the week-based-year
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* <li>{@link #WEEK_BASED_YEAR WEEK_BASED_YEAR} - the week-based-year
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* </ul><p>
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* The week-based-year itself is defined relative to the standard ISO proleptic year.
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* It differs from the standard year in that it always starts on a Monday.
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* <p>
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* The first week of a week-based-year is the first Monday-based week of the standard
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* ISO year that has at least 4 days in the new year.
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* <p><ul>
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* <li>If January 1st is Monday then week 1 starts on January 1st
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* <li>If January 1st is Tuesday then week 1 starts on December 31st of the previous standard year
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* <li>If January 1st is Wednesday then week 1 starts on December 30th of the previous standard year
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* <li>If January 1st is Thursday then week 1 starts on December 29th of the previous standard year
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* <li>If January 1st is Friday then week 1 starts on January 4th
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* <li>If January 1st is Saturday then week 1 starts on January 3rd
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* <li>If January 1st is Sunday then week 1 starts on January 2nd
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* </ul><p>
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* There are 52 weeks in most week-based years, however on occasion there are 53 weeks.
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* <p>
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* For example:
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* <p>
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* <table cellpadding="0" cellspacing="3" border="0" style="text-align: left; width: 50%;">
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* <caption>Examples of Week based Years</caption>
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* <tr><th>Date</th><th>Day-of-week</th><th>Field values</th></tr>
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* <tr><th>2008-12-28</th><td>Sunday</td><td>Week 52 of week-based-year 2008</td></tr>
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* <tr><th>2008-12-29</th><td>Monday</td><td>Week 1 of week-based-year 2009</td></tr>
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* <tr><th>2008-12-31</th><td>Wednesday</td><td>Week 1 of week-based-year 2009</td></tr>
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* <tr><th>2009-01-01</th><td>Thursday</td><td>Week 1 of week-based-year 2009</td></tr>
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* <tr><th>2009-01-04</th><td>Sunday</td><td>Week 1 of week-based-year 2009</td></tr>
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* <tr><th>2009-01-05</th><td>Monday</td><td>Week 2 of week-based-year 2009</td></tr>
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* </table>
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*
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* @implSpec
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* <p>
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* This class is immutable and thread-safe.
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*
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* @since 1.8
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*/
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public final class IsoFields {
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/**
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* The field that represents the day-of-quarter.
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* <p>
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* This field allows the day-of-quarter value to be queried and set.
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* The day-of-quarter has values from 1 to 90 in Q1 of a standard year, from 1 to 91
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* in Q1 of a leap year, from 1 to 91 in Q2 and from 1 to 92 in Q3 and Q4.
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* <p>
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* The day-of-quarter can only be calculated if the day-of-year, month-of-year and year
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* are available.
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* <p>
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* When setting this field, the value is allowed to be partially lenient, taking any
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* value from 1 to 92. If the quarter has less than 92 days, then day 92, and
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* potentially day 91, is in the following quarter.
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* <p>
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* In the resolving phase of parsing, a date can be created from a year,
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* quarter-of-year and day-of-quarter.
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* <p>
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* In {@linkplain ResolverStyle#STRICT strict mode}, all three fields are
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* validated against their range of valid values. The day-of-quarter field
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* is validated from 1 to 90, 91 or 92 depending on the year and quarter.
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* <p>
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* In {@linkplain ResolverStyle#SMART smart mode}, all three fields are
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* validated against their range of valid values. The day-of-quarter field is
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* validated between 1 and 92, ignoring the actual range based on the year and quarter.
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* If the day-of-quarter exceeds the actual range by one day, then the resulting date
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* is one day later. If the day-of-quarter exceeds the actual range by two days,
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* then the resulting date is two days later.
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* <p>
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* In {@linkplain ResolverStyle#LENIENT lenient mode}, only the year is validated
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* against the range of valid values. The resulting date is calculated equivalent to
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* the following three stage approach. First, create a date on the first of January
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* in the requested year. Then take the quarter-of-year, subtract one, and add the
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* amount in quarters to the date. Finally, take the day-of-quarter, subtract one,
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* and add the amount in days to the date.
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* <p>
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* This unit is an immutable and thread-safe singleton.
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*/
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public static final TemporalField DAY_OF_QUARTER = Field.DAY_OF_QUARTER;
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/**
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* The field that represents the quarter-of-year.
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* <p>
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* This field allows the quarter-of-year value to be queried and set.
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* The quarter-of-year has values from 1 to 4.
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* <p>
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* The quarter-of-year can only be calculated if the month-of-year is available.
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* <p>
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* In the resolving phase of parsing, a date can be created from a year,
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* quarter-of-year and day-of-quarter.
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* See {@link #DAY_OF_QUARTER} for details.
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* <p>
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* This unit is an immutable and thread-safe singleton.
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*/
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public static final TemporalField QUARTER_OF_YEAR = Field.QUARTER_OF_YEAR;
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/**
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* The field that represents the week-of-week-based-year.
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* <p>
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* This field allows the week of the week-based-year value to be queried and set.
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* The week-of-week-based-year has values from 1 to 52, or 53 if the
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* week-based-year has 53 weeks.
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* <p>
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* In the resolving phase of parsing, a date can be created from a
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* week-based-year, week-of-week-based-year and day-of-week.
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* <p>
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* In {@linkplain ResolverStyle#STRICT strict mode}, all three fields are
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* validated against their range of valid values. The week-of-week-based-year
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* field is validated from 1 to 52 or 53 depending on the week-based-year.
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* <p>
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* In {@linkplain ResolverStyle#SMART smart mode}, all three fields are
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* validated against their range of valid values. The week-of-week-based-year
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* field is validated between 1 and 53, ignoring the week-based-year.
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* If the week-of-week-based-year is 53, but the week-based-year only has
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* 52 weeks, then the resulting date is in week 1 of the following week-based-year.
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* <p>
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* In {@linkplain ResolverStyle#LENIENT lenient mode}, only the week-based-year
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* is validated against the range of valid values. If the day-of-week is outside
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* the range 1 to 7, then the resulting date is adjusted by a suitable number of
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* weeks to reduce the day-of-week to the range 1 to 7. If the week-of-week-based-year
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* value is outside the range 1 to 52, then any excess weeks are added or subtracted
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* from the resulting date.
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* <p>
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* This unit is an immutable and thread-safe singleton.
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*/
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public static final TemporalField WEEK_OF_WEEK_BASED_YEAR = Field.WEEK_OF_WEEK_BASED_YEAR;
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/**
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* The field that represents the week-based-year.
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* <p>
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* This field allows the week-based-year value to be queried and set.
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* <p>
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* The field has a range that matches {@link LocalDate#MAX} and {@link LocalDate#MIN}.
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* <p>
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* In the resolving phase of parsing, a date can be created from a
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* week-based-year, week-of-week-based-year and day-of-week.
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* See {@link #WEEK_OF_WEEK_BASED_YEAR} for details.
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* <p>
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* This unit is an immutable and thread-safe singleton.
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*/
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public static final TemporalField WEEK_BASED_YEAR = Field.WEEK_BASED_YEAR;
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/**
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* The unit that represents week-based-years for the purpose of addition and subtraction.
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* <p>
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* This allows a number of week-based-years to be added to, or subtracted from, a date.
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* The unit is equal to either 52 or 53 weeks.
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* The estimated duration of a week-based-year is the same as that of a standard ISO
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* year at {@code 365.2425 Days}.
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* <p>
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* The rules for addition add the number of week-based-years to the existing value
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* for the week-based-year field. If the resulting week-based-year only has 52 weeks,
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* then the date will be in week 1 of the following week-based-year.
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* <p>
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* This unit is an immutable and thread-safe singleton.
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*/
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public static final TemporalUnit WEEK_BASED_YEARS = Unit.WEEK_BASED_YEARS;
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/**
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* Unit that represents the concept of a quarter-year.
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* For the ISO calendar system, it is equal to 3 months.
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* The estimated duration of a quarter-year is one quarter of {@code 365.2425 Days}.
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* <p>
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* This unit is an immutable and thread-safe singleton.
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*/
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public static final TemporalUnit QUARTER_YEARS = Unit.QUARTER_YEARS;
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/**
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* Restricted constructor.
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*/
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private IsoFields() {
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throw new AssertionError("Not instantiable");
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}
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//-----------------------------------------------------------------------
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/**
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* Implementation of the field.
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*/
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private static enum Field implements TemporalField {
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DAY_OF_QUARTER {
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@Override
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public String getName() {
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return "DayOfQuarter";
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}
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@Override
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public TemporalUnit getBaseUnit() {
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return DAYS;
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}
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@Override
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public TemporalUnit getRangeUnit() {
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return QUARTER_YEARS;
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}
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@Override
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public ValueRange range() {
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return ValueRange.of(1, 90, 92);
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}
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@Override
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public boolean isSupportedBy(TemporalAccessor temporal) {
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return temporal.isSupported(DAY_OF_YEAR) && temporal.isSupported(MONTH_OF_YEAR) &&
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temporal.isSupported(YEAR) && isIso(temporal);
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}
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@Override
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public ValueRange rangeRefinedBy(TemporalAccessor temporal) {
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if (isSupportedBy(temporal) == false) {
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throw new UnsupportedTemporalTypeException("Unsupported field: DayOfQuarter");
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}
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long qoy = temporal.getLong(QUARTER_OF_YEAR);
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if (qoy == 1) {
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long year = temporal.getLong(YEAR);
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return (IsoChronology.INSTANCE.isLeapYear(year) ? ValueRange.of(1, 91) : ValueRange.of(1, 90));
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} else if (qoy == 2) {
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return ValueRange.of(1, 91);
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} else if (qoy == 3 || qoy == 4) {
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return ValueRange.of(1, 92);
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} // else value not from 1 to 4, so drop through
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return range();
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}
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@Override
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public long getFrom(TemporalAccessor temporal) {
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if (isSupportedBy(temporal) == false) {
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throw new UnsupportedTemporalTypeException("Unsupported field: DayOfQuarter");
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}
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int doy = temporal.get(DAY_OF_YEAR);
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int moy = temporal.get(MONTH_OF_YEAR);
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long year = temporal.getLong(YEAR);
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return doy - QUARTER_DAYS[((moy - 1) / 3) + (IsoChronology.INSTANCE.isLeapYear(year) ? 4 : 0)];
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}
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@SuppressWarnings("unchecked")
|
|
339 |
@Override
|
|
340 |
public <R extends Temporal> R adjustInto(R temporal, long newValue) {
|
|
341 |
// calls getFrom() to check if supported
|
|
342 |
long curValue = getFrom(temporal);
|
|
343 |
range().checkValidValue(newValue, this); // leniently check from 1 to 92 TODO: check
|
|
344 |
return (R) temporal.with(DAY_OF_YEAR, temporal.getLong(DAY_OF_YEAR) + (newValue - curValue));
|
|
345 |
}
|
|
346 |
@Override
|
16852
|
347 |
public Map<TemporalField, Long> resolve(TemporalAccessor temporal, long doq, ResolverStyle resolverStyle) {
|
|
348 |
if ((temporal.isSupported(YEAR) && temporal.isSupported(QUARTER_OF_YEAR)) == false) {
|
15658
|
349 |
return null;
|
|
350 |
}
|
16852
|
351 |
int y = temporal.get(YEAR); // validated
|
|
352 |
LocalDate date;
|
|
353 |
if (resolverStyle == ResolverStyle.LENIENT) {
|
|
354 |
long qoy = temporal.getLong(QUARTER_OF_YEAR); // unvalidated
|
|
355 |
date = LocalDate.of(y, 1, 1).plusMonths(Math.multiplyExact(Math.subtractExact(qoy, 1), 3));
|
|
356 |
} else {
|
|
357 |
int qoy = temporal.get(QUARTER_OF_YEAR); // validated
|
|
358 |
date = LocalDate.of(y, ((qoy - 1) * 3) + 1, 1);
|
|
359 |
if (doq < 1 || doq > 90) {
|
|
360 |
if (resolverStyle == ResolverStyle.STRICT) {
|
|
361 |
rangeRefinedBy(date).checkValidValue(doq, this); // only allow exact range
|
|
362 |
} else { // SMART
|
|
363 |
range().checkValidValue(doq, this); // allow 1-92 rolling into next quarter
|
|
364 |
}
|
|
365 |
}
|
|
366 |
}
|
|
367 |
long epochDay = Math.addExact(date.toEpochDay(), Math.subtractExact(doq, 1));
|
15658
|
368 |
Map<TemporalField, Long> result = new HashMap<>(4, 1.0f);
|
16852
|
369 |
result.put(EPOCH_DAY, epochDay);
|
15658
|
370 |
result.put(YEAR, null);
|
|
371 |
result.put(QUARTER_OF_YEAR, null);
|
|
372 |
return result;
|
|
373 |
}
|
|
374 |
},
|
|
375 |
QUARTER_OF_YEAR {
|
|
376 |
@Override
|
|
377 |
public String getName() {
|
|
378 |
return "QuarterOfYear";
|
|
379 |
}
|
|
380 |
@Override
|
|
381 |
public TemporalUnit getBaseUnit() {
|
|
382 |
return QUARTER_YEARS;
|
|
383 |
}
|
|
384 |
@Override
|
|
385 |
public TemporalUnit getRangeUnit() {
|
|
386 |
return YEARS;
|
|
387 |
}
|
|
388 |
@Override
|
|
389 |
public ValueRange range() {
|
|
390 |
return ValueRange.of(1, 4);
|
|
391 |
}
|
|
392 |
@Override
|
|
393 |
public boolean isSupportedBy(TemporalAccessor temporal) {
|
|
394 |
return temporal.isSupported(MONTH_OF_YEAR) && isIso(temporal);
|
|
395 |
}
|
|
396 |
@Override
|
|
397 |
public long getFrom(TemporalAccessor temporal) {
|
|
398 |
if (isSupportedBy(temporal) == false) {
|
16852
|
399 |
throw new UnsupportedTemporalTypeException("Unsupported field: QuarterOfYear");
|
15658
|
400 |
}
|
|
401 |
long moy = temporal.getLong(MONTH_OF_YEAR);
|
|
402 |
return ((moy + 2) / 3);
|
|
403 |
}
|
|
404 |
@SuppressWarnings("unchecked")
|
|
405 |
@Override
|
|
406 |
public <R extends Temporal> R adjustInto(R temporal, long newValue) {
|
|
407 |
// calls getFrom() to check if supported
|
|
408 |
long curValue = getFrom(temporal);
|
|
409 |
range().checkValidValue(newValue, this); // strictly check from 1 to 4
|
|
410 |
return (R) temporal.with(MONTH_OF_YEAR, temporal.getLong(MONTH_OF_YEAR) + (newValue - curValue) * 3);
|
|
411 |
}
|
|
412 |
},
|
|
413 |
WEEK_OF_WEEK_BASED_YEAR {
|
|
414 |
@Override
|
|
415 |
public String getName() {
|
|
416 |
return "WeekOfWeekBasedYear";
|
|
417 |
}
|
16852
|
418 |
|
|
419 |
@Override
|
|
420 |
public String getDisplayName(Locale locale) {
|
|
421 |
Objects.requireNonNull(locale, "locale");
|
|
422 |
LocaleResources lr = LocaleProviderAdapter.getResourceBundleBased()
|
|
423 |
.getLocaleResources(locale);
|
|
424 |
ResourceBundle rb = lr.getJavaTimeFormatData();
|
|
425 |
return rb.containsKey("field.week") ? rb.getString("field.week") : getName();
|
|
426 |
}
|
|
427 |
|
15658
|
428 |
@Override
|
|
429 |
public TemporalUnit getBaseUnit() {
|
|
430 |
return WEEKS;
|
|
431 |
}
|
|
432 |
@Override
|
|
433 |
public TemporalUnit getRangeUnit() {
|
|
434 |
return WEEK_BASED_YEARS;
|
|
435 |
}
|
|
436 |
@Override
|
|
437 |
public ValueRange range() {
|
|
438 |
return ValueRange.of(1, 52, 53);
|
|
439 |
}
|
|
440 |
@Override
|
|
441 |
public boolean isSupportedBy(TemporalAccessor temporal) {
|
|
442 |
return temporal.isSupported(EPOCH_DAY) && isIso(temporal);
|
|
443 |
}
|
|
444 |
@Override
|
|
445 |
public ValueRange rangeRefinedBy(TemporalAccessor temporal) {
|
|
446 |
if (isSupportedBy(temporal) == false) {
|
16852
|
447 |
throw new UnsupportedTemporalTypeException("Unsupported field: WeekOfWeekBasedYear");
|
15658
|
448 |
}
|
|
449 |
return getWeekRange(LocalDate.from(temporal));
|
|
450 |
}
|
|
451 |
@Override
|
|
452 |
public long getFrom(TemporalAccessor temporal) {
|
|
453 |
if (isSupportedBy(temporal) == false) {
|
16852
|
454 |
throw new UnsupportedTemporalTypeException("Unsupported field: WeekOfWeekBasedYear");
|
15658
|
455 |
}
|
|
456 |
return getWeek(LocalDate.from(temporal));
|
|
457 |
}
|
|
458 |
@SuppressWarnings("unchecked")
|
|
459 |
@Override
|
|
460 |
public <R extends Temporal> R adjustInto(R temporal, long newValue) {
|
|
461 |
// calls getFrom() to check if supported
|
|
462 |
range().checkValidValue(newValue, this); // lenient range
|
|
463 |
return (R) temporal.plus(Math.subtractExact(newValue, getFrom(temporal)), WEEKS);
|
|
464 |
}
|
|
465 |
@Override
|
16852
|
466 |
public Map<TemporalField, Long> resolve(TemporalAccessor temporal, long wowby, ResolverStyle resolverStyle) {
|
15658
|
467 |
if ((temporal.isSupported(WEEK_BASED_YEAR) && temporal.isSupported(DAY_OF_WEEK)) == false) {
|
|
468 |
return null;
|
|
469 |
}
|
16852
|
470 |
int wby = temporal.get(WEEK_BASED_YEAR); // validated
|
|
471 |
LocalDate date = LocalDate.of(wby, 1, 4);
|
|
472 |
if (resolverStyle == ResolverStyle.LENIENT) {
|
|
473 |
long dow = temporal.getLong(DAY_OF_WEEK); // unvalidated
|
|
474 |
if (dow > 7) {
|
|
475 |
date = date.plusWeeks((dow - 1) / 7);
|
|
476 |
dow = ((dow - 1) % 7) + 1;
|
|
477 |
} else if (dow < 1) {
|
|
478 |
date = date.plusWeeks(Math.subtractExact(dow, 7) / 7);
|
|
479 |
dow = ((dow + 6) % 7) + 1;
|
|
480 |
}
|
|
481 |
date = date.plusWeeks(Math.subtractExact(wowby, 1)).with(DAY_OF_WEEK, dow);
|
|
482 |
} else {
|
|
483 |
int dow = temporal.get(DAY_OF_WEEK); // validated
|
|
484 |
if (wowby < 1 || wowby > 52) {
|
|
485 |
if (resolverStyle == ResolverStyle.STRICT) {
|
|
486 |
getWeekRange(date).checkValidValue(wowby, this); // only allow exact range
|
|
487 |
} else { // SMART
|
|
488 |
range().checkValidValue(wowby, this); // allow 1-53 rolling into next year
|
|
489 |
}
|
|
490 |
}
|
|
491 |
date = date.plusWeeks(wowby - 1).with(DAY_OF_WEEK, dow);
|
|
492 |
}
|
15658
|
493 |
Map<TemporalField, Long> result = new HashMap<>(2, 1.0f);
|
|
494 |
result.put(EPOCH_DAY, date.toEpochDay());
|
|
495 |
result.put(WEEK_BASED_YEAR, null);
|
|
496 |
result.put(DAY_OF_WEEK, null);
|
|
497 |
return result;
|
|
498 |
}
|
|
499 |
},
|
|
500 |
WEEK_BASED_YEAR {
|
|
501 |
@Override
|
|
502 |
public String getName() {
|
|
503 |
return "WeekBasedYear";
|
|
504 |
}
|
|
505 |
@Override
|
|
506 |
public TemporalUnit getBaseUnit() {
|
|
507 |
return WEEK_BASED_YEARS;
|
|
508 |
}
|
|
509 |
@Override
|
|
510 |
public TemporalUnit getRangeUnit() {
|
|
511 |
return FOREVER;
|
|
512 |
}
|
|
513 |
@Override
|
|
514 |
public ValueRange range() {
|
|
515 |
return YEAR.range();
|
|
516 |
}
|
|
517 |
@Override
|
|
518 |
public boolean isSupportedBy(TemporalAccessor temporal) {
|
|
519 |
return temporal.isSupported(EPOCH_DAY) && isIso(temporal);
|
|
520 |
}
|
|
521 |
@Override
|
|
522 |
public long getFrom(TemporalAccessor temporal) {
|
|
523 |
if (isSupportedBy(temporal) == false) {
|
16852
|
524 |
throw new UnsupportedTemporalTypeException("Unsupported field: WeekBasedYear");
|
15658
|
525 |
}
|
|
526 |
return getWeekBasedYear(LocalDate.from(temporal));
|
|
527 |
}
|
|
528 |
@SuppressWarnings("unchecked")
|
|
529 |
@Override
|
|
530 |
public <R extends Temporal> R adjustInto(R temporal, long newValue) {
|
|
531 |
if (isSupportedBy(temporal) == false) {
|
16852
|
532 |
throw new UnsupportedTemporalTypeException("Unsupported field: WeekBasedYear");
|
15658
|
533 |
}
|
|
534 |
int newVal = range().checkValidIntValue(newValue, WEEK_BASED_YEAR); // strict check
|
|
535 |
LocalDate date = LocalDate.from(temporal);
|
|
536 |
int week = getWeek(date);
|
|
537 |
date = date.withDayOfYear(180).withYear(newVal).with(WEEK_OF_WEEK_BASED_YEAR, week);
|
|
538 |
return (R) date.with(date);
|
|
539 |
}
|
|
540 |
};
|
|
541 |
|
|
542 |
@Override
|
16852
|
543 |
public boolean isDateBased() {
|
|
544 |
return true;
|
|
545 |
}
|
|
546 |
|
|
547 |
@Override
|
15658
|
548 |
public ValueRange rangeRefinedBy(TemporalAccessor temporal) {
|
|
549 |
return range();
|
|
550 |
}
|
|
551 |
|
|
552 |
@Override
|
|
553 |
public String toString() {
|
|
554 |
return getName();
|
|
555 |
}
|
|
556 |
|
|
557 |
//-------------------------------------------------------------------------
|
|
558 |
private static final int[] QUARTER_DAYS = {0, 90, 181, 273, 0, 91, 182, 274};
|
|
559 |
|
|
560 |
private static boolean isIso(TemporalAccessor temporal) {
|
|
561 |
return Chronology.from(temporal).equals(IsoChronology.INSTANCE);
|
|
562 |
}
|
|
563 |
|
|
564 |
private static ValueRange getWeekRange(LocalDate date) {
|
|
565 |
int wby = getWeekBasedYear(date);
|
|
566 |
date = date.withDayOfYear(1).withYear(wby);
|
|
567 |
// 53 weeks if standard year starts on Thursday, or Wed in a leap year
|
|
568 |
if (date.getDayOfWeek() == THURSDAY || (date.getDayOfWeek() == WEDNESDAY && date.isLeapYear())) {
|
|
569 |
return ValueRange.of(1, 53);
|
|
570 |
}
|
|
571 |
return ValueRange.of(1, 52);
|
|
572 |
}
|
|
573 |
|
|
574 |
private static int getWeek(LocalDate date) {
|
|
575 |
int dow0 = date.getDayOfWeek().ordinal();
|
|
576 |
int doy0 = date.getDayOfYear() - 1;
|
|
577 |
int doyThu0 = doy0 + (3 - dow0); // adjust to mid-week Thursday (which is 3 indexed from zero)
|
|
578 |
int alignedWeek = doyThu0 / 7;
|
|
579 |
int firstThuDoy0 = doyThu0 - (alignedWeek * 7);
|
|
580 |
int firstMonDoy0 = firstThuDoy0 - 3;
|
|
581 |
if (firstMonDoy0 < -3) {
|
|
582 |
firstMonDoy0 += 7;
|
|
583 |
}
|
|
584 |
if (doy0 < firstMonDoy0) {
|
|
585 |
return (int) getWeekRange(date.withDayOfYear(180).minusYears(1)).getMaximum();
|
|
586 |
}
|
|
587 |
int week = ((doy0 - firstMonDoy0) / 7) + 1;
|
|
588 |
if (week == 53) {
|
|
589 |
if ((firstMonDoy0 == -3 || (firstMonDoy0 == -2 && date.isLeapYear())) == false) {
|
|
590 |
week = 1;
|
|
591 |
}
|
|
592 |
}
|
|
593 |
return week;
|
|
594 |
}
|
|
595 |
|
|
596 |
private static int getWeekBasedYear(LocalDate date) {
|
|
597 |
int year = date.getYear();
|
|
598 |
int doy = date.getDayOfYear();
|
|
599 |
if (doy <= 3) {
|
|
600 |
int dow = date.getDayOfWeek().ordinal();
|
|
601 |
if (doy - dow < -2) {
|
|
602 |
year--;
|
|
603 |
}
|
|
604 |
} else if (doy >= 363) {
|
|
605 |
int dow = date.getDayOfWeek().ordinal();
|
|
606 |
doy = doy - 363 - (date.isLeapYear() ? 1 : 0);
|
|
607 |
if (doy - dow >= 0) {
|
|
608 |
year++;
|
|
609 |
}
|
|
610 |
}
|
|
611 |
return year;
|
|
612 |
}
|
|
613 |
}
|
|
614 |
|
|
615 |
//-----------------------------------------------------------------------
|
|
616 |
/**
|
|
617 |
* Implementation of the period unit.
|
|
618 |
*/
|
|
619 |
private static enum Unit implements TemporalUnit {
|
|
620 |
|
|
621 |
/**
|
|
622 |
* Unit that represents the concept of a week-based-year.
|
|
623 |
*/
|
|
624 |
WEEK_BASED_YEARS("WeekBasedYears", Duration.ofSeconds(31556952L)),
|
|
625 |
/**
|
|
626 |
* Unit that represents the concept of a quarter-year.
|
|
627 |
*/
|
|
628 |
QUARTER_YEARS("QuarterYears", Duration.ofSeconds(31556952L / 4));
|
|
629 |
|
|
630 |
private final String name;
|
|
631 |
private final Duration duration;
|
|
632 |
|
|
633 |
private Unit(String name, Duration estimatedDuration) {
|
|
634 |
this.name = name;
|
|
635 |
this.duration = estimatedDuration;
|
|
636 |
}
|
|
637 |
|
|
638 |
@Override
|
|
639 |
public String getName() {
|
|
640 |
return name;
|
|
641 |
}
|
|
642 |
|
|
643 |
@Override
|
|
644 |
public Duration getDuration() {
|
|
645 |
return duration;
|
|
646 |
}
|
|
647 |
|
|
648 |
@Override
|
|
649 |
public boolean isDurationEstimated() {
|
|
650 |
return true;
|
|
651 |
}
|
|
652 |
|
|
653 |
@Override
|
|
654 |
public boolean isSupportedBy(Temporal temporal) {
|
|
655 |
return temporal.isSupported(EPOCH_DAY);
|
|
656 |
}
|
|
657 |
|
|
658 |
@SuppressWarnings("unchecked")
|
|
659 |
@Override
|
|
660 |
public <R extends Temporal> R addTo(R temporal, long amount) {
|
|
661 |
switch(this) {
|
|
662 |
case WEEK_BASED_YEARS:
|
|
663 |
return (R) temporal.with(WEEK_BASED_YEAR,
|
|
664 |
Math.addExact(temporal.get(WEEK_BASED_YEAR), amount));
|
|
665 |
case QUARTER_YEARS:
|
|
666 |
// no overflow (256 is multiple of 4)
|
|
667 |
return (R) temporal.plus(amount / 256, YEARS)
|
|
668 |
.plus((amount % 256) * 3, MONTHS);
|
|
669 |
default:
|
|
670 |
throw new IllegalStateException("Unreachable");
|
|
671 |
}
|
|
672 |
}
|
|
673 |
|
|
674 |
@Override
|
|
675 |
public long between(Temporal temporal1, Temporal temporal2) {
|
|
676 |
switch(this) {
|
|
677 |
case WEEK_BASED_YEARS:
|
|
678 |
return Math.subtractExact(temporal2.getLong(WEEK_BASED_YEAR),
|
|
679 |
temporal1.getLong(WEEK_BASED_YEAR));
|
|
680 |
case QUARTER_YEARS:
|
|
681 |
return temporal1.periodUntil(temporal2, MONTHS) / 3;
|
|
682 |
default:
|
|
683 |
throw new IllegalStateException("Unreachable");
|
|
684 |
}
|
|
685 |
}
|
|
686 |
|
|
687 |
@Override
|
|
688 |
public String toString() {
|
|
689 |
return getName();
|
|
690 |
|
|
691 |
}
|
|
692 |
}
|
|
693 |
}
|