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/*
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* Copyright 1996-2006 Sun Microsystems, Inc. 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. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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* (C) Copyright Taligent, Inc. 1996 - All Rights Reserved
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* (C) Copyright IBM Corp. 1996 - All Rights Reserved
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*
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* The original version of this source code and documentation is copyrighted
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* and owned by Taligent, Inc., a wholly-owned subsidiary of IBM. These
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* materials are provided under terms of a License Agreement between Taligent
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* and Sun. This technology is protected by multiple US and International
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* patents. This notice and attribution to Taligent may not be removed.
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* Taligent is a registered trademark of Taligent, Inc.
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*
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*/
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package java.util;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.IOException;
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import sun.util.calendar.CalendarSystem;
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import sun.util.calendar.CalendarUtils;
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import sun.util.calendar.BaseCalendar;
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import sun.util.calendar.Gregorian;
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/**
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* <code>SimpleTimeZone</code> is a concrete subclass of <code>TimeZone</code>
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* that represents a time zone for use with a Gregorian calendar.
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* The class holds an offset from GMT, called <em>raw offset</em>, and start
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* and end rules for a daylight saving time schedule. Since it only holds
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* single values for each, it cannot handle historical changes in the offset
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* from GMT and the daylight saving schedule, except that the {@link
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* #setStartYear setStartYear} method can specify the year when the daylight
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* saving time schedule starts in effect.
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* <p>
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* To construct a <code>SimpleTimeZone</code> with a daylight saving time
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* schedule, the schedule can be described with a set of rules,
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* <em>start-rule</em> and <em>end-rule</em>. A day when daylight saving time
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* starts or ends is specified by a combination of <em>month</em>,
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* <em>day-of-month</em>, and <em>day-of-week</em> values. The <em>month</em>
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* value is represented by a Calendar {@link Calendar#MONTH MONTH} field
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* value, such as {@link Calendar#MARCH}. The <em>day-of-week</em> value is
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* represented by a Calendar {@link Calendar#DAY_OF_WEEK DAY_OF_WEEK} value,
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* such as {@link Calendar#SUNDAY SUNDAY}. The meanings of value combinations
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* are as follows.
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*
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* <ul>
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* <li><b>Exact day of month</b><br>
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* To specify an exact day of month, set the <em>month</em> and
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* <em>day-of-month</em> to an exact value, and <em>day-of-week</em> to zero. For
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* example, to specify March 1, set the <em>month</em> to {@link Calendar#MARCH
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* MARCH}, <em>day-of-month</em> to 1, and <em>day-of-week</em> to 0.</li>
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*
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* <li><b>Day of week on or after day of month</b><br>
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* To specify a day of week on or after an exact day of month, set the
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* <em>month</em> to an exact month value, <em>day-of-month</em> to the day on
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* or after which the rule is applied, and <em>day-of-week</em> to a negative {@link
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* Calendar#DAY_OF_WEEK DAY_OF_WEEK} field value. For example, to specify the
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* second Sunday of April, set <em>month</em> to {@link Calendar#APRIL APRIL},
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* <em>day-of-month</em> to 8, and <em>day-of-week</em> to <code>-</code>{@link
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* Calendar#SUNDAY SUNDAY}.</li>
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*
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* <li><b>Day of week on or before day of month</b><br>
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* To specify a day of the week on or before an exact day of the month, set
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* <em>day-of-month</em> and <em>day-of-week</em> to a negative value. For
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* example, to specify the last Wednesday on or before the 21st of March, set
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* <em>month</em> to {@link Calendar#MARCH MARCH}, <em>day-of-month</em> is -21
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* and <em>day-of-week</em> is <code>-</code>{@link Calendar#WEDNESDAY WEDNESDAY}. </li>
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*
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* <li><b>Last day-of-week of month</b><br>
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* To specify, the last day-of-week of the month, set <em>day-of-week</em> to a
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* {@link Calendar#DAY_OF_WEEK DAY_OF_WEEK} value and <em>day-of-month</em> to
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* -1. For example, to specify the last Sunday of October, set <em>month</em>
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* to {@link Calendar#OCTOBER OCTOBER}, <em>day-of-week</em> to {@link
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* Calendar#SUNDAY SUNDAY} and <em>day-of-month</em> to -1. </li>
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*
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* </ul>
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* The time of the day at which daylight saving time starts or ends is
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* specified by a millisecond value within the day. There are three kinds of
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* <em>mode</em>s to specify the time: {@link #WALL_TIME}, {@link
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* #STANDARD_TIME} and {@link #UTC_TIME}. For example, if daylight
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* saving time ends
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* at 2:00 am in the wall clock time, it can be specified by 7200000
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* milliseconds in the {@link #WALL_TIME} mode. In this case, the wall clock time
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* for an <em>end-rule</em> means the same thing as the daylight time.
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* <p>
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* The following are examples of parameters for constructing time zone objects.
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* <pre><code>
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* // Base GMT offset: -8:00
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* // DST starts: at 2:00am in standard time
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* // on the first Sunday in April
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* // DST ends: at 2:00am in daylight time
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* // on the last Sunday in October
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* // Save: 1 hour
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* SimpleTimeZone(-28800000,
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* "America/Los_Angeles",
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* Calendar.APRIL, 1, -Calendar.SUNDAY,
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* 7200000,
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* Calendar.OCTOBER, -1, Calendar.SUNDAY,
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* 7200000,
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* 3600000)
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*
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* // Base GMT offset: +1:00
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* // DST starts: at 1:00am in UTC time
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* // on the last Sunday in March
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* // DST ends: at 1:00am in UTC time
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* // on the last Sunday in October
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* // Save: 1 hour
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* SimpleTimeZone(3600000,
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* "Europe/Paris",
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* Calendar.MARCH, -1, Calendar.SUNDAY,
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* 3600000, SimpleTimeZone.UTC_TIME,
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* Calendar.OCTOBER, -1, Calendar.SUNDAY,
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* 3600000, SimpleTimeZone.UTC_TIME,
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* 3600000)
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* </code></pre>
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* These parameter rules are also applicable to the set rule methods, such as
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* <code>setStartRule</code>.
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*
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* @since 1.1
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* @see Calendar
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* @see GregorianCalendar
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* @see TimeZone
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* @author David Goldsmith, Mark Davis, Chen-Lieh Huang, Alan Liu
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*/
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public class SimpleTimeZone extends TimeZone {
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/**
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* Constructs a SimpleTimeZone with the given base time zone offset from GMT
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* and time zone ID with no daylight saving time schedule.
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*
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* @param rawOffset The base time zone offset in milliseconds to GMT.
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* @param ID The time zone name that is given to this instance.
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*/
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public SimpleTimeZone(int rawOffset, String ID)
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{
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this.rawOffset = rawOffset;
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setID (ID);
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dstSavings = millisPerHour; // In case user sets rules later
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}
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/**
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* Constructs a SimpleTimeZone with the given base time zone offset from
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* GMT, time zone ID, and rules for starting and ending the daylight
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* time.
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* Both <code>startTime</code> and <code>endTime</code> are specified to be
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* represented in the wall clock time. The amount of daylight saving is
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* assumed to be 3600000 milliseconds (i.e., one hour). This constructor is
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* equivalent to:
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* <pre><code>
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* SimpleTimeZone(rawOffset,
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* ID,
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* startMonth,
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* startDay,
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* startDayOfWeek,
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* startTime,
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* SimpleTimeZone.{@link #WALL_TIME},
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* endMonth,
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* endDay,
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* endDayOfWeek,
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* endTime,
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* SimpleTimeZone.{@link #WALL_TIME},
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* 3600000)
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* </code></pre>
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*
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* @param rawOffset The given base time zone offset from GMT.
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* @param ID The time zone ID which is given to this object.
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* @param startMonth The daylight saving time starting month. Month is
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* a {@link Calendar#MONTH MONTH} field value (0-based. e.g., 0
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* for January).
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* @param startDay The day of the month on which the daylight saving time starts.
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* See the class description for the special cases of this parameter.
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* @param startDayOfWeek The daylight saving time starting day-of-week.
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* See the class description for the special cases of this parameter.
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* @param startTime The daylight saving time starting time in local wall clock
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* time (in milliseconds within the day), which is local
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* standard time in this case.
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* @param endMonth The daylight saving time ending month. Month is
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* a {@link Calendar#MONTH MONTH} field
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* value (0-based. e.g., 9 for October).
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* @param endDay The day of the month on which the daylight saving time ends.
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* See the class description for the special cases of this parameter.
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* @param endDayOfWeek The daylight saving time ending day-of-week.
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* See the class description for the special cases of this parameter.
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* @param endTime The daylight saving ending time in local wall clock time,
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* (in milliseconds within the day) which is local daylight
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* time in this case.
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* @exception IllegalArgumentException if the month, day, dayOfWeek, or time
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* parameters are out of range for the start or end rule
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*/
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public SimpleTimeZone(int rawOffset, String ID,
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int startMonth, int startDay, int startDayOfWeek, int startTime,
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int endMonth, int endDay, int endDayOfWeek, int endTime)
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{
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this(rawOffset, ID,
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startMonth, startDay, startDayOfWeek, startTime, WALL_TIME,
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endMonth, endDay, endDayOfWeek, endTime, WALL_TIME,
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millisPerHour);
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}
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/**
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* Constructs a SimpleTimeZone with the given base time zone offset from
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* GMT, time zone ID, and rules for starting and ending the daylight
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* time.
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* Both <code>startTime</code> and <code>endTime</code> are assumed to be
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* represented in the wall clock time. This constructor is equivalent to:
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* <pre><code>
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* SimpleTimeZone(rawOffset,
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* ID,
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* startMonth,
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* startDay,
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* startDayOfWeek,
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* startTime,
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* SimpleTimeZone.{@link #WALL_TIME},
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* endMonth,
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* endDay,
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* endDayOfWeek,
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* endTime,
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* SimpleTimeZone.{@link #WALL_TIME},
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* dstSavings)
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* </code></pre>
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*
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* @param rawOffset The given base time zone offset from GMT.
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* @param ID The time zone ID which is given to this object.
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* @param startMonth The daylight saving time starting month. Month is
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* a {@link Calendar#MONTH MONTH} field
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* value (0-based. e.g., 0 for January).
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* @param startDay The day of the month on which the daylight saving time starts.
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* See the class description for the special cases of this parameter.
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* @param startDayOfWeek The daylight saving time starting day-of-week.
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* See the class description for the special cases of this parameter.
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* @param startTime The daylight saving time starting time in local wall clock
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* time, which is local standard time in this case.
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* @param endMonth The daylight saving time ending month. Month is
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* a {@link Calendar#MONTH MONTH} field
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* value (0-based. e.g., 9 for October).
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* @param endDay The day of the month on which the daylight saving time ends.
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* See the class description for the special cases of this parameter.
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* @param endDayOfWeek The daylight saving time ending day-of-week.
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* See the class description for the special cases of this parameter.
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* @param endTime The daylight saving ending time in local wall clock time,
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* which is local daylight time in this case.
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* @param dstSavings The amount of time in milliseconds saved during
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* daylight saving time.
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* @exception IllegalArgumentException if the month, day, dayOfWeek, or time
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* parameters are out of range for the start or end rule
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* @since 1.2
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*/
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public SimpleTimeZone(int rawOffset, String ID,
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int startMonth, int startDay, int startDayOfWeek, int startTime,
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int endMonth, int endDay, int endDayOfWeek, int endTime,
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int dstSavings)
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{
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this(rawOffset, ID,
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startMonth, startDay, startDayOfWeek, startTime, WALL_TIME,
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endMonth, endDay, endDayOfWeek, endTime, WALL_TIME,
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dstSavings);
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}
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/**
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* Constructs a SimpleTimeZone with the given base time zone offset from
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* GMT, time zone ID, and rules for starting and ending the daylight
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* time.
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* This constructor takes the full set of the start and end rules
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* parameters, including modes of <code>startTime</code> and
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* <code>endTime</code>. The mode specifies either {@link #WALL_TIME wall
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* time} or {@link #STANDARD_TIME standard time} or {@link #UTC_TIME UTC
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* time}.
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*
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* @param rawOffset The given base time zone offset from GMT.
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* @param ID The time zone ID which is given to this object.
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* @param startMonth The daylight saving time starting month. Month is
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* a {@link Calendar#MONTH MONTH} field
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* value (0-based. e.g., 0 for January).
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* @param startDay The day of the month on which the daylight saving time starts.
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* See the class description for the special cases of this parameter.
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* @param startDayOfWeek The daylight saving time starting day-of-week.
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* See the class description for the special cases of this parameter.
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* @param startTime The daylight saving time starting time in the time mode
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* specified by <code>startTimeMode</code>.
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* @param startTimeMode The mode of the start time specified by startTime.
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* @param endMonth The daylight saving time ending month. Month is
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* a {@link Calendar#MONTH MONTH} field
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* value (0-based. e.g., 9 for October).
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|
308 |
* @param endDay The day of the month on which the daylight saving time ends.
|
|
|
309 |
* See the class description for the special cases of this parameter.
|
|
|
310 |
* @param endDayOfWeek The daylight saving time ending day-of-week.
|
|
|
311 |
* See the class description for the special cases of this parameter.
|
|
|
312 |
* @param endTime The daylight saving ending time in time time mode
|
|
|
313 |
* specified by <code>endTimeMode</code>.
|
|
|
314 |
* @param endTimeMode The mode of the end time specified by endTime
|
|
|
315 |
* @param dstSavings The amount of time in milliseconds saved during
|
|
|
316 |
* daylight saving time.
|
|
|
317 |
*
|
|
|
318 |
* @exception IllegalArgumentException if the month, day, dayOfWeek, time more, or
|
|
|
319 |
* time parameters are out of range for the start or end rule, or if a time mode
|
|
|
320 |
* value is invalid.
|
|
|
321 |
*
|
|
|
322 |
* @see #WALL_TIME
|
|
|
323 |
* @see #STANDARD_TIME
|
|
|
324 |
* @see #UTC_TIME
|
|
|
325 |
*
|
|
|
326 |
* @since 1.4
|
|
|
327 |
*/
|
|
|
328 |
public SimpleTimeZone(int rawOffset, String ID,
|
|
|
329 |
int startMonth, int startDay, int startDayOfWeek,
|
|
|
330 |
int startTime, int startTimeMode,
|
|
|
331 |
int endMonth, int endDay, int endDayOfWeek,
|
|
|
332 |
int endTime, int endTimeMode,
|
|
|
333 |
int dstSavings) {
|
|
|
334 |
|
|
|
335 |
setID(ID);
|
|
|
336 |
this.rawOffset = rawOffset;
|
|
|
337 |
this.startMonth = startMonth;
|
|
|
338 |
this.startDay = startDay;
|
|
|
339 |
this.startDayOfWeek = startDayOfWeek;
|
|
|
340 |
this.startTime = startTime;
|
|
|
341 |
this.startTimeMode = startTimeMode;
|
|
|
342 |
this.endMonth = endMonth;
|
|
|
343 |
this.endDay = endDay;
|
|
|
344 |
this.endDayOfWeek = endDayOfWeek;
|
|
|
345 |
this.endTime = endTime;
|
|
|
346 |
this.endTimeMode = endTimeMode;
|
|
|
347 |
this.dstSavings = dstSavings;
|
|
|
348 |
|
|
|
349 |
// this.useDaylight is set by decodeRules
|
|
|
350 |
decodeRules();
|
|
|
351 |
if (dstSavings <= 0) {
|
|
|
352 |
throw new IllegalArgumentException("Illegal daylight saving value: " + dstSavings);
|
|
|
353 |
}
|
|
|
354 |
}
|
|
|
355 |
|
|
|
356 |
/**
|
|
|
357 |
* Sets the daylight saving time starting year.
|
|
|
358 |
*
|
|
|
359 |
* @param year The daylight saving starting year.
|
|
|
360 |
*/
|
|
|
361 |
public void setStartYear(int year)
|
|
|
362 |
{
|
|
|
363 |
startYear = year;
|
|
|
364 |
invalidateCache();
|
|
|
365 |
}
|
|
|
366 |
|
|
|
367 |
/**
|
|
|
368 |
* Sets the daylight saving time start rule. For example, if daylight saving
|
|
|
369 |
* time starts on the first Sunday in April at 2 am in local wall clock
|
|
|
370 |
* time, you can set the start rule by calling:
|
|
|
371 |
* <pre><code>setStartRule(Calendar.APRIL, 1, Calendar.SUNDAY, 2*60*60*1000);</code></pre>
|
|
|
372 |
*
|
|
|
373 |
* @param startMonth The daylight saving time starting month. Month is
|
|
|
374 |
* a {@link Calendar#MONTH MONTH} field
|
|
|
375 |
* value (0-based. e.g., 0 for January).
|
|
|
376 |
* @param startDay The day of the month on which the daylight saving time starts.
|
|
|
377 |
* See the class description for the special cases of this parameter.
|
|
|
378 |
* @param startDayOfWeek The daylight saving time starting day-of-week.
|
|
|
379 |
* See the class description for the special cases of this parameter.
|
|
|
380 |
* @param startTime The daylight saving time starting time in local wall clock
|
|
|
381 |
* time, which is local standard time in this case.
|
|
|
382 |
* @exception IllegalArgumentException if the <code>startMonth</code>, <code>startDay</code>,
|
|
|
383 |
* <code>startDayOfWeek</code>, or <code>startTime</code> parameters are out of range
|
|
|
384 |
*/
|
|
|
385 |
public void setStartRule(int startMonth, int startDay, int startDayOfWeek, int startTime)
|
|
|
386 |
{
|
|
|
387 |
this.startMonth = startMonth;
|
|
|
388 |
this.startDay = startDay;
|
|
|
389 |
this.startDayOfWeek = startDayOfWeek;
|
|
|
390 |
this.startTime = startTime;
|
|
|
391 |
startTimeMode = WALL_TIME;
|
|
|
392 |
decodeStartRule();
|
|
|
393 |
invalidateCache();
|
|
|
394 |
}
|
|
|
395 |
|
|
|
396 |
/**
|
|
|
397 |
* Sets the daylight saving time start rule to a fixed date within a month.
|
|
|
398 |
* This method is equivalent to:
|
|
|
399 |
* <pre><code>setStartRule(startMonth, startDay, 0, startTime)</code></pre>
|
|
|
400 |
*
|
|
|
401 |
* @param startMonth The daylight saving time starting month. Month is
|
|
|
402 |
* a {@link Calendar#MONTH MONTH} field
|
|
|
403 |
* value (0-based. e.g., 0 for January).
|
|
|
404 |
* @param startDay The day of the month on which the daylight saving time starts.
|
|
|
405 |
* @param startTime The daylight saving time starting time in local wall clock
|
|
|
406 |
* time, which is local standard time in this case.
|
|
|
407 |
* See the class description for the special cases of this parameter.
|
|
|
408 |
* @exception IllegalArgumentException if the <code>startMonth</code>,
|
|
|
409 |
* <code>startDayOfMonth</code>, or <code>startTime</code> parameters are out of range
|
|
|
410 |
* @since 1.2
|
|
|
411 |
*/
|
|
|
412 |
public void setStartRule(int startMonth, int startDay, int startTime) {
|
|
|
413 |
setStartRule(startMonth, startDay, 0, startTime);
|
|
|
414 |
}
|
|
|
415 |
|
|
|
416 |
/**
|
|
|
417 |
* Sets the daylight saving time start rule to a weekday before or after the given date within
|
|
|
418 |
* a month, e.g., the first Monday on or after the 8th.
|
|
|
419 |
*
|
|
|
420 |
* @param startMonth The daylight saving time starting month. Month is
|
|
|
421 |
* a {@link Calendar#MONTH MONTH} field
|
|
|
422 |
* value (0-based. e.g., 0 for January).
|
|
|
423 |
* @param startDay The day of the month on which the daylight saving time starts.
|
|
|
424 |
* @param startDayOfWeek The daylight saving time starting day-of-week.
|
|
|
425 |
* @param startTime The daylight saving time starting time in local wall clock
|
|
|
426 |
* time, which is local standard time in this case.
|
|
|
427 |
* @param after If true, this rule selects the first <code>dayOfWeek</code> on or
|
|
|
428 |
* <em>after</em> <code>dayOfMonth</code>. If false, this rule
|
|
|
429 |
* selects the last <code>dayOfWeek</code> on or <em>before</em>
|
|
|
430 |
* <code>dayOfMonth</code>.
|
|
|
431 |
* @exception IllegalArgumentException if the <code>startMonth</code>, <code>startDay</code>,
|
|
|
432 |
* <code>startDayOfWeek</code>, or <code>startTime</code> parameters are out of range
|
|
|
433 |
* @since 1.2
|
|
|
434 |
*/
|
|
|
435 |
public void setStartRule(int startMonth, int startDay, int startDayOfWeek,
|
|
|
436 |
int startTime, boolean after)
|
|
|
437 |
{
|
|
|
438 |
// TODO: this method doesn't check the initial values of dayOfMonth or dayOfWeek.
|
|
|
439 |
if (after) {
|
|
|
440 |
setStartRule(startMonth, startDay, -startDayOfWeek, startTime);
|
|
|
441 |
} else {
|
|
|
442 |
setStartRule(startMonth, -startDay, -startDayOfWeek, startTime);
|
|
|
443 |
}
|
|
|
444 |
}
|
|
|
445 |
|
|
|
446 |
/**
|
|
|
447 |
* Sets the daylight saving time end rule. For example, if daylight saving time
|
|
|
448 |
* ends on the last Sunday in October at 2 am in wall clock time,
|
|
|
449 |
* you can set the end rule by calling:
|
|
|
450 |
* <code>setEndRule(Calendar.OCTOBER, -1, Calendar.SUNDAY, 2*60*60*1000);</code>
|
|
|
451 |
*
|
|
|
452 |
* @param endMonth The daylight saving time ending month. Month is
|
|
|
453 |
* a {@link Calendar#MONTH MONTH} field
|
|
|
454 |
* value (0-based. e.g., 9 for October).
|
|
|
455 |
* @param endDay The day of the month on which the daylight saving time ends.
|
|
|
456 |
* See the class description for the special cases of this parameter.
|
|
|
457 |
* @param endDayOfWeek The daylight saving time ending day-of-week.
|
|
|
458 |
* See the class description for the special cases of this parameter.
|
|
|
459 |
* @param endTime The daylight saving ending time in local wall clock time,
|
|
|
460 |
* (in milliseconds within the day) which is local daylight
|
|
|
461 |
* time in this case.
|
|
|
462 |
* @exception IllegalArgumentException if the <code>endMonth</code>, <code>endDay</code>,
|
|
|
463 |
* <code>endDayOfWeek</code>, or <code>endTime</code> parameters are out of range
|
|
|
464 |
*/
|
|
|
465 |
public void setEndRule(int endMonth, int endDay, int endDayOfWeek,
|
|
|
466 |
int endTime)
|
|
|
467 |
{
|
|
|
468 |
this.endMonth = endMonth;
|
|
|
469 |
this.endDay = endDay;
|
|
|
470 |
this.endDayOfWeek = endDayOfWeek;
|
|
|
471 |
this.endTime = endTime;
|
|
|
472 |
this.endTimeMode = WALL_TIME;
|
|
|
473 |
decodeEndRule();
|
|
|
474 |
invalidateCache();
|
|
|
475 |
}
|
|
|
476 |
|
|
|
477 |
/**
|
|
|
478 |
* Sets the daylight saving time end rule to a fixed date within a month.
|
|
|
479 |
* This method is equivalent to:
|
|
|
480 |
* <pre><code>setEndRule(endMonth, endDay, 0, endTime)</code></pre>
|
|
|
481 |
*
|
|
|
482 |
* @param endMonth The daylight saving time ending month. Month is
|
|
|
483 |
* a {@link Calendar#MONTH MONTH} field
|
|
|
484 |
* value (0-based. e.g., 9 for October).
|
|
|
485 |
* @param endDay The day of the month on which the daylight saving time ends.
|
|
|
486 |
* @param endTime The daylight saving ending time in local wall clock time,
|
|
|
487 |
* (in milliseconds within the day) which is local daylight
|
|
|
488 |
* time in this case.
|
|
|
489 |
* @exception IllegalArgumentException the <code>endMonth</code>, <code>endDay</code>,
|
|
|
490 |
* or <code>endTime</code> parameters are out of range
|
|
|
491 |
* @since 1.2
|
|
|
492 |
*/
|
|
|
493 |
public void setEndRule(int endMonth, int endDay, int endTime)
|
|
|
494 |
{
|
|
|
495 |
setEndRule(endMonth, endDay, 0, endTime);
|
|
|
496 |
}
|
|
|
497 |
|
|
|
498 |
/**
|
|
|
499 |
* Sets the daylight saving time end rule to a weekday before or after the given date within
|
|
|
500 |
* a month, e.g., the first Monday on or after the 8th.
|
|
|
501 |
*
|
|
|
502 |
* @param endMonth The daylight saving time ending month. Month is
|
|
|
503 |
* a {@link Calendar#MONTH MONTH} field
|
|
|
504 |
* value (0-based. e.g., 9 for October).
|
|
|
505 |
* @param endDay The day of the month on which the daylight saving time ends.
|
|
|
506 |
* @param endDayOfWeek The daylight saving time ending day-of-week.
|
|
|
507 |
* @param endTime The daylight saving ending time in local wall clock time,
|
|
|
508 |
* (in milliseconds within the day) which is local daylight
|
|
|
509 |
* time in this case.
|
|
|
510 |
* @param after If true, this rule selects the first <code>endDayOfWeek</code> on
|
|
|
511 |
* or <em>after</em> <code>endDay</code>. If false, this rule
|
|
|
512 |
* selects the last <code>endDayOfWeek</code> on or before
|
|
|
513 |
* <code>endDay</code> of the month.
|
|
|
514 |
* @exception IllegalArgumentException the <code>endMonth</code>, <code>endDay</code>,
|
|
|
515 |
* <code>endDayOfWeek</code>, or <code>endTime</code> parameters are out of range
|
|
|
516 |
* @since 1.2
|
|
|
517 |
*/
|
|
|
518 |
public void setEndRule(int endMonth, int endDay, int endDayOfWeek, int endTime, boolean after)
|
|
|
519 |
{
|
|
|
520 |
if (after) {
|
|
|
521 |
setEndRule(endMonth, endDay, -endDayOfWeek, endTime);
|
|
|
522 |
} else {
|
|
|
523 |
setEndRule(endMonth, -endDay, -endDayOfWeek, endTime);
|
|
|
524 |
}
|
|
|
525 |
}
|
|
|
526 |
|
|
|
527 |
/**
|
|
|
528 |
* Returns the offset of this time zone from UTC at the given
|
|
|
529 |
* time. If daylight saving time is in effect at the given time,
|
|
|
530 |
* the offset value is adjusted with the amount of daylight
|
|
|
531 |
* saving.
|
|
|
532 |
*
|
|
|
533 |
* @param date the time at which the time zone offset is found
|
|
|
534 |
* @return the amount of time in milliseconds to add to UTC to get
|
|
|
535 |
* local time.
|
|
|
536 |
* @since 1.4
|
|
|
537 |
*/
|
|
|
538 |
public int getOffset(long date) {
|
|
|
539 |
return getOffsets(date, null);
|
|
|
540 |
}
|
|
|
541 |
|
|
|
542 |
/**
|
|
|
543 |
* @see TimeZone#getOffsets
|
|
|
544 |
*/
|
|
|
545 |
int getOffsets(long date, int[] offsets) {
|
|
|
546 |
int offset = rawOffset;
|
|
|
547 |
|
|
|
548 |
computeOffset:
|
|
|
549 |
if (useDaylight) {
|
|
|
550 |
synchronized (this) {
|
|
|
551 |
if (cacheStart != 0) {
|
|
|
552 |
if (date >= cacheStart && date < cacheEnd) {
|
|
|
553 |
offset += dstSavings;
|
|
|
554 |
break computeOffset;
|
|
|
555 |
}
|
|
|
556 |
}
|
|
|
557 |
}
|
|
|
558 |
BaseCalendar cal = date >= GregorianCalendar.DEFAULT_GREGORIAN_CUTOVER ?
|
|
|
559 |
gcal : (BaseCalendar) CalendarSystem.forName("julian");
|
|
|
560 |
BaseCalendar.Date cdate = (BaseCalendar.Date) cal.newCalendarDate(TimeZone.NO_TIMEZONE);
|
|
|
561 |
// Get the year in local time
|
|
|
562 |
cal.getCalendarDate(date + rawOffset, cdate);
|
|
|
563 |
int year = cdate.getNormalizedYear();
|
|
|
564 |
if (year >= startYear) {
|
|
|
565 |
// Clear time elements for the transition calculations
|
|
|
566 |
cdate.setTimeOfDay(0, 0, 0, 0);
|
|
|
567 |
offset = getOffset(cal, cdate, year, date);
|
|
|
568 |
}
|
|
|
569 |
}
|
|
|
570 |
|
|
|
571 |
if (offsets != null) {
|
|
|
572 |
offsets[0] = rawOffset;
|
|
|
573 |
offsets[1] = offset - rawOffset;
|
|
|
574 |
}
|
|
|
575 |
return offset;
|
|
|
576 |
}
|
|
|
577 |
|
|
|
578 |
/**
|
|
|
579 |
* Returns the difference in milliseconds between local time and
|
|
|
580 |
* UTC, taking into account both the raw offset and the effect of
|
|
|
581 |
* daylight saving, for the specified date and time. This method
|
|
|
582 |
* assumes that the start and end month are distinct. It also
|
|
|
583 |
* uses a default {@link GregorianCalendar} object as its
|
|
|
584 |
* underlying calendar, such as for determining leap years. Do
|
|
|
585 |
* not use the result of this method with a calendar other than a
|
|
|
586 |
* default <code>GregorianCalendar</code>.
|
|
|
587 |
*
|
|
|
588 |
* <p><em>Note: In general, clients should use
|
|
|
589 |
* <code>Calendar.get(ZONE_OFFSET) + Calendar.get(DST_OFFSET)</code>
|
|
|
590 |
* instead of calling this method.</em>
|
|
|
591 |
*
|
|
|
592 |
* @param era The era of the given date.
|
|
|
593 |
* @param year The year in the given date.
|
|
|
594 |
* @param month The month in the given date. Month is 0-based. e.g.,
|
|
|
595 |
* 0 for January.
|
|
|
596 |
* @param day The day-in-month of the given date.
|
|
|
597 |
* @param dayOfWeek The day-of-week of the given date.
|
|
|
598 |
* @param millis The milliseconds in day in <em>standard</em> local time.
|
|
|
599 |
* @return The milliseconds to add to UTC to get local time.
|
|
|
600 |
* @exception IllegalArgumentException the <code>era</code>,
|
|
|
601 |
* <code>month</code>, <code>day</code>, <code>dayOfWeek</code>,
|
|
|
602 |
* or <code>millis</code> parameters are out of range
|
|
|
603 |
*/
|
|
|
604 |
public int getOffset(int era, int year, int month, int day, int dayOfWeek,
|
|
|
605 |
int millis)
|
|
|
606 |
{
|
|
|
607 |
if (era != GregorianCalendar.AD && era != GregorianCalendar.BC) {
|
|
|
608 |
throw new IllegalArgumentException("Illegal era " + era);
|
|
|
609 |
}
|
|
|
610 |
|
|
|
611 |
int y = year;
|
|
|
612 |
if (era == GregorianCalendar.BC) {
|
|
|
613 |
// adjust y with the GregorianCalendar-style year numbering.
|
|
|
614 |
y = 1 - y;
|
|
|
615 |
}
|
|
|
616 |
|
|
|
617 |
// If the year isn't representable with the 64-bit long
|
|
|
618 |
// integer in milliseconds, convert the year to an
|
|
|
619 |
// equivalent year. This is required to pass some JCK test cases
|
|
|
620 |
// which are actually useless though because the specified years
|
|
|
621 |
// can't be supported by the Java time system.
|
|
|
622 |
if (y >= 292278994) {
|
|
|
623 |
y = 2800 + y % 2800;
|
|
|
624 |
} else if (y <= -292269054) {
|
|
|
625 |
// y %= 28 also produces an equivalent year, but positive
|
|
|
626 |
// year numbers would be convenient to use the UNIX cal
|
|
|
627 |
// command.
|
|
|
628 |
y = (int) CalendarUtils.mod((long) y, 28);
|
|
|
629 |
}
|
|
|
630 |
|
|
|
631 |
// convert year to its 1-based month value
|
|
|
632 |
int m = month + 1;
|
|
|
633 |
|
|
|
634 |
// First, calculate time as a Gregorian date.
|
|
|
635 |
BaseCalendar cal = gcal;
|
|
|
636 |
BaseCalendar.Date cdate = (BaseCalendar.Date) cal.newCalendarDate(TimeZone.NO_TIMEZONE);
|
|
|
637 |
cdate.setDate(y, m, day);
|
|
|
638 |
long time = cal.getTime(cdate); // normalize cdate
|
|
|
639 |
time += millis - rawOffset; // UTC time
|
|
|
640 |
|
|
|
641 |
// If the time value represents a time before the default
|
|
|
642 |
// Gregorian cutover, recalculate time using the Julian
|
|
|
643 |
// calendar system. For the Julian calendar system, the
|
|
|
644 |
// normalized year numbering is ..., -2 (BCE 2), -1 (BCE 1),
|
|
|
645 |
// 1, 2 ... which is different from the GregorianCalendar
|
|
|
646 |
// style year numbering (..., -1, 0 (BCE 1), 1, 2, ...).
|
|
|
647 |
if (time < GregorianCalendar.DEFAULT_GREGORIAN_CUTOVER) {
|
|
|
648 |
cal = (BaseCalendar) CalendarSystem.forName("julian");
|
|
|
649 |
cdate = (BaseCalendar.Date) cal.newCalendarDate(TimeZone.NO_TIMEZONE);
|
|
|
650 |
cdate.setNormalizedDate(y, m, day);
|
|
|
651 |
time = cal.getTime(cdate) + millis - rawOffset;
|
|
|
652 |
}
|
|
|
653 |
|
|
|
654 |
if ((cdate.getNormalizedYear() != y)
|
|
|
655 |
|| (cdate.getMonth() != m)
|
|
|
656 |
|| (cdate.getDayOfMonth() != day)
|
|
|
657 |
// The validation should be cdate.getDayOfWeek() ==
|
|
|
658 |
// dayOfWeek. However, we don't check dayOfWeek for
|
|
|
659 |
// compatibility.
|
|
|
660 |
|| (dayOfWeek < Calendar.SUNDAY || dayOfWeek > Calendar.SATURDAY)
|
|
|
661 |
|| (millis < 0 || millis >= (24*60*60*1000))) {
|
|
|
662 |
throw new IllegalArgumentException();
|
|
|
663 |
}
|
|
|
664 |
|
|
|
665 |
if (!useDaylight || year < startYear || era != GregorianCalendar.CE) {
|
|
|
666 |
return rawOffset;
|
|
|
667 |
}
|
|
|
668 |
|
|
|
669 |
return getOffset(cal, cdate, y, time);
|
|
|
670 |
}
|
|
|
671 |
|
|
|
672 |
private int getOffset(BaseCalendar cal, BaseCalendar.Date cdate, int year, long time) {
|
|
|
673 |
synchronized (this) {
|
|
|
674 |
if (cacheStart != 0) {
|
|
|
675 |
if (time >= cacheStart && time < cacheEnd) {
|
|
|
676 |
return rawOffset + dstSavings;
|
|
|
677 |
}
|
|
|
678 |
if (year == cacheYear) {
|
|
|
679 |
return rawOffset;
|
|
|
680 |
}
|
|
|
681 |
}
|
|
|
682 |
}
|
|
|
683 |
|
|
|
684 |
long start = getStart(cal, cdate, year);
|
|
|
685 |
long end = getEnd(cal, cdate, year);
|
|
|
686 |
int offset = rawOffset;
|
|
|
687 |
if (start <= end) {
|
|
|
688 |
if (time >= start && time < end) {
|
|
|
689 |
offset += dstSavings;
|
|
|
690 |
}
|
|
|
691 |
synchronized (this) {
|
|
|
692 |
cacheYear = year;
|
|
|
693 |
cacheStart = start;
|
|
|
694 |
cacheEnd = end;
|
|
|
695 |
}
|
|
|
696 |
} else {
|
|
|
697 |
if (time < end) {
|
|
|
698 |
// TODO: support Gregorian cutover. The previous year
|
|
|
699 |
// may be in the other calendar system.
|
|
|
700 |
start = getStart(cal, cdate, year - 1);
|
|
|
701 |
if (time >= start) {
|
|
|
702 |
offset += dstSavings;
|
|
|
703 |
}
|
|
|
704 |
} else if (time >= start) {
|
|
|
705 |
// TODO: support Gregorian cutover. The next year
|
|
|
706 |
// may be in the other calendar system.
|
|
|
707 |
end = getEnd(cal, cdate, year + 1);
|
|
|
708 |
if (time < end) {
|
|
|
709 |
offset += dstSavings;
|
|
|
710 |
}
|
|
|
711 |
}
|
|
|
712 |
if (start <= end) {
|
|
|
713 |
synchronized (this) {
|
|
|
714 |
// The start and end transitions are in multiple years.
|
|
|
715 |
cacheYear = (long) startYear - 1;
|
|
|
716 |
cacheStart = start;
|
|
|
717 |
cacheEnd = end;
|
|
|
718 |
}
|
|
|
719 |
}
|
|
|
720 |
}
|
|
|
721 |
return offset;
|
|
|
722 |
}
|
|
|
723 |
|
|
|
724 |
private long getStart(BaseCalendar cal, BaseCalendar.Date cdate, int year) {
|
|
|
725 |
int time = startTime;
|
|
|
726 |
if (startTimeMode != UTC_TIME) {
|
|
|
727 |
time -= rawOffset;
|
|
|
728 |
}
|
|
|
729 |
return getTransition(cal, cdate, startMode, year, startMonth, startDay,
|
|
|
730 |
startDayOfWeek, time);
|
|
|
731 |
}
|
|
|
732 |
|
|
|
733 |
private long getEnd(BaseCalendar cal, BaseCalendar.Date cdate, int year) {
|
|
|
734 |
int time = endTime;
|
|
|
735 |
if (endTimeMode != UTC_TIME) {
|
|
|
736 |
time -= rawOffset;
|
|
|
737 |
}
|
|
|
738 |
if (endTimeMode == WALL_TIME) {
|
|
|
739 |
time -= dstSavings;
|
|
|
740 |
}
|
|
|
741 |
return getTransition(cal, cdate, endMode, year, endMonth, endDay,
|
|
|
742 |
endDayOfWeek, time);
|
|
|
743 |
}
|
|
|
744 |
|
|
|
745 |
private long getTransition(BaseCalendar cal, BaseCalendar.Date cdate,
|
|
|
746 |
int mode, int year, int month, int dayOfMonth,
|
|
|
747 |
int dayOfWeek, int timeOfDay) {
|
|
|
748 |
cdate.setNormalizedYear(year);
|
|
|
749 |
cdate.setMonth(month + 1);
|
|
|
750 |
switch (mode) {
|
|
|
751 |
case DOM_MODE:
|
|
|
752 |
cdate.setDayOfMonth(dayOfMonth);
|
|
|
753 |
break;
|
|
|
754 |
|
|
|
755 |
case DOW_IN_MONTH_MODE:
|
|
|
756 |
cdate.setDayOfMonth(1);
|
|
|
757 |
if (dayOfMonth < 0) {
|
|
|
758 |
cdate.setDayOfMonth(cal.getMonthLength(cdate));
|
|
|
759 |
}
|
|
|
760 |
cdate = (BaseCalendar.Date) cal.getNthDayOfWeek(dayOfMonth, dayOfWeek, cdate);
|
|
|
761 |
break;
|
|
|
762 |
|
|
|
763 |
case DOW_GE_DOM_MODE:
|
|
|
764 |
cdate.setDayOfMonth(dayOfMonth);
|
|
|
765 |
cdate = (BaseCalendar.Date) cal.getNthDayOfWeek(1, dayOfWeek, cdate);
|
|
|
766 |
break;
|
|
|
767 |
|
|
|
768 |
case DOW_LE_DOM_MODE:
|
|
|
769 |
cdate.setDayOfMonth(dayOfMonth);
|
|
|
770 |
cdate = (BaseCalendar.Date) cal.getNthDayOfWeek(-1, dayOfWeek, cdate);
|
|
|
771 |
break;
|
|
|
772 |
}
|
|
|
773 |
return cal.getTime(cdate) + timeOfDay;
|
|
|
774 |
}
|
|
|
775 |
|
|
|
776 |
/**
|
|
|
777 |
* Gets the GMT offset for this time zone.
|
|
|
778 |
* @return the GMT offset value in milliseconds
|
|
|
779 |
* @see #setRawOffset
|
|
|
780 |
*/
|
|
|
781 |
public int getRawOffset()
|
|
|
782 |
{
|
|
|
783 |
// The given date will be taken into account while
|
|
|
784 |
// we have the historical time zone data in place.
|
|
|
785 |
return rawOffset;
|
|
|
786 |
}
|
|
|
787 |
|
|
|
788 |
/**
|
|
|
789 |
* Sets the base time zone offset to GMT.
|
|
|
790 |
* This is the offset to add to UTC to get local time.
|
|
|
791 |
* @see #getRawOffset
|
|
|
792 |
*/
|
|
|
793 |
public void setRawOffset(int offsetMillis)
|
|
|
794 |
{
|
|
|
795 |
this.rawOffset = offsetMillis;
|
|
|
796 |
}
|
|
|
797 |
|
|
|
798 |
/**
|
|
|
799 |
* Sets the amount of time in milliseconds that the clock is advanced
|
|
|
800 |
* during daylight saving time.
|
|
|
801 |
* @param millisSavedDuringDST the number of milliseconds the time is
|
|
|
802 |
* advanced with respect to standard time when the daylight saving time rules
|
|
|
803 |
* are in effect. A positive number, typically one hour (3600000).
|
|
|
804 |
* @see #getDSTSavings
|
|
|
805 |
* @since 1.2
|
|
|
806 |
*/
|
|
|
807 |
public void setDSTSavings(int millisSavedDuringDST) {
|
|
|
808 |
if (millisSavedDuringDST <= 0) {
|
|
|
809 |
throw new IllegalArgumentException("Illegal daylight saving value: "
|
|
|
810 |
+ millisSavedDuringDST);
|
|
|
811 |
}
|
|
|
812 |
dstSavings = millisSavedDuringDST;
|
|
|
813 |
}
|
|
|
814 |
|
|
|
815 |
/**
|
|
|
816 |
* Returns the amount of time in milliseconds that the clock is
|
|
|
817 |
* advanced during daylight saving time.
|
|
|
818 |
*
|
|
|
819 |
* @return the number of milliseconds the time is advanced with
|
|
|
820 |
* respect to standard time when the daylight saving rules are in
|
|
|
821 |
* effect, or 0 (zero) if this time zone doesn't observe daylight
|
|
|
822 |
* saving time.
|
|
|
823 |
*
|
|
|
824 |
* @see #setDSTSavings
|
|
|
825 |
* @since 1.2
|
|
|
826 |
*/
|
|
|
827 |
public int getDSTSavings() {
|
|
|
828 |
if (useDaylight) {
|
|
|
829 |
return dstSavings;
|
|
|
830 |
}
|
|
|
831 |
return 0;
|
|
|
832 |
}
|
|
|
833 |
|
|
|
834 |
/**
|
|
|
835 |
* Queries if this time zone uses daylight saving time.
|
|
|
836 |
* @return true if this time zone uses daylight saving time;
|
|
|
837 |
* false otherwise.
|
|
|
838 |
*/
|
|
|
839 |
public boolean useDaylightTime()
|
|
|
840 |
{
|
|
|
841 |
return useDaylight;
|
|
|
842 |
}
|
|
|
843 |
|
|
|
844 |
/**
|
|
|
845 |
* Queries if the given date is in daylight saving time.
|
|
|
846 |
* @return true if daylight saving time is in effective at the
|
|
|
847 |
* given date; false otherwise.
|
|
|
848 |
*/
|
|
|
849 |
public boolean inDaylightTime(Date date)
|
|
|
850 |
{
|
|
|
851 |
return (getOffset(date.getTime()) != rawOffset);
|
|
|
852 |
}
|
|
|
853 |
|
|
|
854 |
/**
|
|
|
855 |
* Returns a clone of this <code>SimpleTimeZone</code> instance.
|
|
|
856 |
* @return a clone of this instance.
|
|
|
857 |
*/
|
|
|
858 |
public Object clone()
|
|
|
859 |
{
|
|
|
860 |
return super.clone();
|
|
|
861 |
}
|
|
|
862 |
|
|
|
863 |
/**
|
|
|
864 |
* Generates the hash code for the SimpleDateFormat object.
|
|
|
865 |
* @return the hash code for this object
|
|
|
866 |
*/
|
|
|
867 |
public synchronized int hashCode()
|
|
|
868 |
{
|
|
|
869 |
return startMonth ^ startDay ^ startDayOfWeek ^ startTime ^
|
|
|
870 |
endMonth ^ endDay ^ endDayOfWeek ^ endTime ^ rawOffset;
|
|
|
871 |
}
|
|
|
872 |
|
|
|
873 |
/**
|
|
|
874 |
* Compares the equality of two <code>SimpleTimeZone</code> objects.
|
|
|
875 |
*
|
|
|
876 |
* @param obj The <code>SimpleTimeZone</code> object to be compared with.
|
|
|
877 |
* @return True if the given <code>obj</code> is the same as this
|
|
|
878 |
* <code>SimpleTimeZone</code> object; false otherwise.
|
|
|
879 |
*/
|
|
|
880 |
public boolean equals(Object obj)
|
|
|
881 |
{
|
|
|
882 |
if (this == obj) {
|
|
|
883 |
return true;
|
|
|
884 |
}
|
|
|
885 |
if (!(obj instanceof SimpleTimeZone)) {
|
|
|
886 |
return false;
|
|
|
887 |
}
|
|
|
888 |
|
|
|
889 |
SimpleTimeZone that = (SimpleTimeZone) obj;
|
|
|
890 |
|
|
|
891 |
return getID().equals(that.getID()) &&
|
|
|
892 |
hasSameRules(that);
|
|
|
893 |
}
|
|
|
894 |
|
|
|
895 |
/**
|
|
|
896 |
* Returns <code>true</code> if this zone has the same rules and offset as another zone.
|
|
|
897 |
* @param other the TimeZone object to be compared with
|
|
|
898 |
* @return <code>true</code> if the given zone is a SimpleTimeZone and has the
|
|
|
899 |
* same rules and offset as this one
|
|
|
900 |
* @since 1.2
|
|
|
901 |
*/
|
|
|
902 |
public boolean hasSameRules(TimeZone other) {
|
|
|
903 |
if (this == other) {
|
|
|
904 |
return true;
|
|
|
905 |
}
|
|
|
906 |
if (!(other instanceof SimpleTimeZone)) {
|
|
|
907 |
return false;
|
|
|
908 |
}
|
|
|
909 |
SimpleTimeZone that = (SimpleTimeZone) other;
|
|
|
910 |
return rawOffset == that.rawOffset &&
|
|
|
911 |
useDaylight == that.useDaylight &&
|
|
|
912 |
(!useDaylight
|
|
|
913 |
// Only check rules if using DST
|
|
|
914 |
|| (dstSavings == that.dstSavings &&
|
|
|
915 |
startMode == that.startMode &&
|
|
|
916 |
startMonth == that.startMonth &&
|
|
|
917 |
startDay == that.startDay &&
|
|
|
918 |
startDayOfWeek == that.startDayOfWeek &&
|
|
|
919 |
startTime == that.startTime &&
|
|
|
920 |
startTimeMode == that.startTimeMode &&
|
|
|
921 |
endMode == that.endMode &&
|
|
|
922 |
endMonth == that.endMonth &&
|
|
|
923 |
endDay == that.endDay &&
|
|
|
924 |
endDayOfWeek == that.endDayOfWeek &&
|
|
|
925 |
endTime == that.endTime &&
|
|
|
926 |
endTimeMode == that.endTimeMode &&
|
|
|
927 |
startYear == that.startYear));
|
|
|
928 |
}
|
|
|
929 |
|
|
|
930 |
/**
|
|
|
931 |
* Returns a string representation of this time zone.
|
|
|
932 |
* @return a string representation of this time zone.
|
|
|
933 |
*/
|
|
|
934 |
public String toString() {
|
|
|
935 |
return getClass().getName() +
|
|
|
936 |
"[id=" + getID() +
|
|
|
937 |
",offset=" + rawOffset +
|
|
|
938 |
",dstSavings=" + dstSavings +
|
|
|
939 |
",useDaylight=" + useDaylight +
|
|
|
940 |
",startYear=" + startYear +
|
|
|
941 |
",startMode=" + startMode +
|
|
|
942 |
",startMonth=" + startMonth +
|
|
|
943 |
",startDay=" + startDay +
|
|
|
944 |
",startDayOfWeek=" + startDayOfWeek +
|
|
|
945 |
",startTime=" + startTime +
|
|
|
946 |
",startTimeMode=" + startTimeMode +
|
|
|
947 |
",endMode=" + endMode +
|
|
|
948 |
",endMonth=" + endMonth +
|
|
|
949 |
",endDay=" + endDay +
|
|
|
950 |
",endDayOfWeek=" + endDayOfWeek +
|
|
|
951 |
",endTime=" + endTime +
|
|
|
952 |
",endTimeMode=" + endTimeMode + ']';
|
|
|
953 |
}
|
|
|
954 |
|
|
|
955 |
// =======================privates===============================
|
|
|
956 |
|
|
|
957 |
/**
|
|
|
958 |
* The month in which daylight saving time starts. This value must be
|
|
|
959 |
* between <code>Calendar.JANUARY</code> and
|
|
|
960 |
* <code>Calendar.DECEMBER</code> inclusive. This value must not equal
|
|
|
961 |
* <code>endMonth</code>.
|
|
|
962 |
* <p>If <code>useDaylight</code> is false, this value is ignored.
|
|
|
963 |
* @serial
|
|
|
964 |
*/
|
|
|
965 |
private int startMonth;
|
|
|
966 |
|
|
|
967 |
/**
|
|
|
968 |
* This field has two possible interpretations:
|
|
|
969 |
* <dl>
|
|
|
970 |
* <dt><code>startMode == DOW_IN_MONTH</code></dt>
|
|
|
971 |
* <dd>
|
|
|
972 |
* <code>startDay</code> indicates the day of the month of
|
|
|
973 |
* <code>startMonth</code> on which daylight
|
|
|
974 |
* saving time starts, from 1 to 28, 30, or 31, depending on the
|
|
|
975 |
* <code>startMonth</code>.
|
|
|
976 |
* </dd>
|
|
|
977 |
* <dt><code>startMode != DOW_IN_MONTH</code></dt>
|
|
|
978 |
* <dd>
|
|
|
979 |
* <code>startDay</code> indicates which <code>startDayOfWeek</code> in the
|
|
|
980 |
* month <code>startMonth</code> daylight
|
|
|
981 |
* saving time starts on. For example, a value of +1 and a
|
|
|
982 |
* <code>startDayOfWeek</code> of <code>Calendar.SUNDAY</code> indicates the
|
|
|
983 |
* first Sunday of <code>startMonth</code>. Likewise, +2 would indicate the
|
|
|
984 |
* second Sunday, and -1 the last Sunday. A value of 0 is illegal.
|
|
|
985 |
* </dd>
|
|
|
986 |
* </dl>
|
|
|
987 |
* <p>If <code>useDaylight</code> is false, this value is ignored.
|
|
|
988 |
* @serial
|
|
|
989 |
*/
|
|
|
990 |
private int startDay;
|
|
|
991 |
|
|
|
992 |
/**
|
|
|
993 |
* The day of the week on which daylight saving time starts. This value
|
|
|
994 |
* must be between <code>Calendar.SUNDAY</code> and
|
|
|
995 |
* <code>Calendar.SATURDAY</code> inclusive.
|
|
|
996 |
* <p>If <code>useDaylight</code> is false or
|
|
|
997 |
* <code>startMode == DAY_OF_MONTH</code>, this value is ignored.
|
|
|
998 |
* @serial
|
|
|
999 |
*/
|
|
|
1000 |
private int startDayOfWeek;
|
|
|
1001 |
|
|
|
1002 |
/**
|
|
|
1003 |
* The time in milliseconds after midnight at which daylight saving
|
|
|
1004 |
* time starts. This value is expressed as wall time, standard time,
|
|
|
1005 |
* or UTC time, depending on the setting of <code>startTimeMode</code>.
|
|
|
1006 |
* <p>If <code>useDaylight</code> is false, this value is ignored.
|
|
|
1007 |
* @serial
|
|
|
1008 |
*/
|
|
|
1009 |
private int startTime;
|
|
|
1010 |
|
|
|
1011 |
/**
|
|
|
1012 |
* The format of startTime, either WALL_TIME, STANDARD_TIME, or UTC_TIME.
|
|
|
1013 |
* @serial
|
|
|
1014 |
* @since 1.3
|
|
|
1015 |
*/
|
|
|
1016 |
private int startTimeMode;
|
|
|
1017 |
|
|
|
1018 |
/**
|
|
|
1019 |
* The month in which daylight saving time ends. This value must be
|
|
|
1020 |
* between <code>Calendar.JANUARY</code> and
|
|
|
1021 |
* <code>Calendar.UNDECIMBER</code>. This value must not equal
|
|
|
1022 |
* <code>startMonth</code>.
|
|
|
1023 |
* <p>If <code>useDaylight</code> is false, this value is ignored.
|
|
|
1024 |
* @serial
|
|
|
1025 |
*/
|
|
|
1026 |
private int endMonth;
|
|
|
1027 |
|
|
|
1028 |
/**
|
|
|
1029 |
* This field has two possible interpretations:
|
|
|
1030 |
* <dl>
|
|
|
1031 |
* <dt><code>endMode == DOW_IN_MONTH</code></dt>
|
|
|
1032 |
* <dd>
|
|
|
1033 |
* <code>endDay</code> indicates the day of the month of
|
|
|
1034 |
* <code>endMonth</code> on which daylight
|
|
|
1035 |
* saving time ends, from 1 to 28, 30, or 31, depending on the
|
|
|
1036 |
* <code>endMonth</code>.
|
|
|
1037 |
* </dd>
|
|
|
1038 |
* <dt><code>endMode != DOW_IN_MONTH</code></dt>
|
|
|
1039 |
* <dd>
|
|
|
1040 |
* <code>endDay</code> indicates which <code>endDayOfWeek</code> in th
|
|
|
1041 |
* month <code>endMonth</code> daylight
|
|
|
1042 |
* saving time ends on. For example, a value of +1 and a
|
|
|
1043 |
* <code>endDayOfWeek</code> of <code>Calendar.SUNDAY</code> indicates the
|
|
|
1044 |
* first Sunday of <code>endMonth</code>. Likewise, +2 would indicate the
|
|
|
1045 |
* second Sunday, and -1 the last Sunday. A value of 0 is illegal.
|
|
|
1046 |
* </dd>
|
|
|
1047 |
* </dl>
|
|
|
1048 |
* <p>If <code>useDaylight</code> is false, this value is ignored.
|
|
|
1049 |
* @serial
|
|
|
1050 |
*/
|
|
|
1051 |
private int endDay;
|
|
|
1052 |
|
|
|
1053 |
/**
|
|
|
1054 |
* The day of the week on which daylight saving time ends. This value
|
|
|
1055 |
* must be between <code>Calendar.SUNDAY</code> and
|
|
|
1056 |
* <code>Calendar.SATURDAY</code> inclusive.
|
|
|
1057 |
* <p>If <code>useDaylight</code> is false or
|
|
|
1058 |
* <code>endMode == DAY_OF_MONTH</code>, this value is ignored.
|
|
|
1059 |
* @serial
|
|
|
1060 |
*/
|
|
|
1061 |
private int endDayOfWeek;
|
|
|
1062 |
|
|
|
1063 |
/**
|
|
|
1064 |
* The time in milliseconds after midnight at which daylight saving
|
|
|
1065 |
* time ends. This value is expressed as wall time, standard time,
|
|
|
1066 |
* or UTC time, depending on the setting of <code>endTimeMode</code>.
|
|
|
1067 |
* <p>If <code>useDaylight</code> is false, this value is ignored.
|
|
|
1068 |
* @serial
|
|
|
1069 |
*/
|
|
|
1070 |
private int endTime;
|
|
|
1071 |
|
|
|
1072 |
/**
|
|
|
1073 |
* The format of endTime, either <code>WALL_TIME</code>,
|
|
|
1074 |
* <code>STANDARD_TIME</code>, or <code>UTC_TIME</code>.
|
|
|
1075 |
* @serial
|
|
|
1076 |
* @since 1.3
|
|
|
1077 |
*/
|
|
|
1078 |
private int endTimeMode;
|
|
|
1079 |
|
|
|
1080 |
/**
|
|
|
1081 |
* The year in which daylight saving time is first observed. This is an {@link GregorianCalendar#AD AD}
|
|
|
1082 |
* value. If this value is less than 1 then daylight saving time is observed
|
|
|
1083 |
* for all <code>AD</code> years.
|
|
|
1084 |
* <p>If <code>useDaylight</code> is false, this value is ignored.
|
|
|
1085 |
* @serial
|
|
|
1086 |
*/
|
|
|
1087 |
private int startYear;
|
|
|
1088 |
|
|
|
1089 |
/**
|
|
|
1090 |
* The offset in milliseconds between this zone and GMT. Negative offsets
|
|
|
1091 |
* are to the west of Greenwich. To obtain local <em>standard</em> time,
|
|
|
1092 |
* add the offset to GMT time. To obtain local wall time it may also be
|
|
|
1093 |
* necessary to add <code>dstSavings</code>.
|
|
|
1094 |
* @serial
|
|
|
1095 |
*/
|
|
|
1096 |
private int rawOffset;
|
|
|
1097 |
|
|
|
1098 |
/**
|
|
|
1099 |
* A boolean value which is true if and only if this zone uses daylight
|
|
|
1100 |
* saving time. If this value is false, several other fields are ignored.
|
|
|
1101 |
* @serial
|
|
|
1102 |
*/
|
|
|
1103 |
private boolean useDaylight=false; // indicate if this time zone uses DST
|
|
|
1104 |
|
|
|
1105 |
private static final int millisPerHour = 60*60*1000;
|
|
|
1106 |
private static final int millisPerDay = 24*millisPerHour;
|
|
|
1107 |
|
|
|
1108 |
/**
|
|
|
1109 |
* This field was serialized in JDK 1.1, so we have to keep it that way
|
|
|
1110 |
* to maintain serialization compatibility. However, there's no need to
|
|
|
1111 |
* recreate the array each time we create a new time zone.
|
|
|
1112 |
* @serial An array of bytes containing the values {31, 28, 31, 30, 31, 30,
|
|
|
1113 |
* 31, 31, 30, 31, 30, 31}. This is ignored as of the Java 2 platform v1.2, however, it must
|
|
|
1114 |
* be streamed out for compatibility with JDK 1.1.
|
|
|
1115 |
*/
|
|
|
1116 |
private final byte monthLength[] = staticMonthLength;
|
|
|
1117 |
private final static byte staticMonthLength[] = {31,28,31,30,31,30,31,31,30,31,30,31};
|
|
|
1118 |
private final static byte staticLeapMonthLength[] = {31,29,31,30,31,30,31,31,30,31,30,31};
|
|
|
1119 |
|
|
|
1120 |
/**
|
|
|
1121 |
* Variables specifying the mode of the start rule. Takes the following
|
|
|
1122 |
* values:
|
|
|
1123 |
* <dl>
|
|
|
1124 |
* <dt><code>DOM_MODE</code></dt>
|
|
|
1125 |
* <dd>
|
|
|
1126 |
* Exact day of week; e.g., March 1.
|
|
|
1127 |
* </dd>
|
|
|
1128 |
* <dt><code>DOW_IN_MONTH_MODE</code></dt>
|
|
|
1129 |
* <dd>
|
|
|
1130 |
* Day of week in month; e.g., last Sunday in March.
|
|
|
1131 |
* </dd>
|
|
|
1132 |
* <dt><code>DOW_GE_DOM_MODE</code></dt>
|
|
|
1133 |
* <dd>
|
|
|
1134 |
* Day of week after day of month; e.g., Sunday on or after March 15.
|
|
|
1135 |
* </dd>
|
|
|
1136 |
* <dt><code>DOW_LE_DOM_MODE</code></dt>
|
|
|
1137 |
* <dd>
|
|
|
1138 |
* Day of week before day of month; e.g., Sunday on or before March 15.
|
|
|
1139 |
* </dd>
|
|
|
1140 |
* </dl>
|
|
|
1141 |
* The setting of this field affects the interpretation of the
|
|
|
1142 |
* <code>startDay</code> field.
|
|
|
1143 |
* <p>If <code>useDaylight</code> is false, this value is ignored.
|
|
|
1144 |
* @serial
|
|
|
1145 |
* @since 1.1.4
|
|
|
1146 |
*/
|
|
|
1147 |
private int startMode;
|
|
|
1148 |
|
|
|
1149 |
/**
|
|
|
1150 |
* Variables specifying the mode of the end rule. Takes the following
|
|
|
1151 |
* values:
|
|
|
1152 |
* <dl>
|
|
|
1153 |
* <dt><code>DOM_MODE</code></dt>
|
|
|
1154 |
* <dd>
|
|
|
1155 |
* Exact day of week; e.g., March 1.
|
|
|
1156 |
* </dd>
|
|
|
1157 |
* <dt><code>DOW_IN_MONTH_MODE</code></dt>
|
|
|
1158 |
* <dd>
|
|
|
1159 |
* Day of week in month; e.g., last Sunday in March.
|
|
|
1160 |
* </dd>
|
|
|
1161 |
* <dt><code>DOW_GE_DOM_MODE</code></dt>
|
|
|
1162 |
* <dd>
|
|
|
1163 |
* Day of week after day of month; e.g., Sunday on or after March 15.
|
|
|
1164 |
* </dd>
|
|
|
1165 |
* <dt><code>DOW_LE_DOM_MODE</code></dt>
|
|
|
1166 |
* <dd>
|
|
|
1167 |
* Day of week before day of month; e.g., Sunday on or before March 15.
|
|
|
1168 |
* </dd>
|
|
|
1169 |
* </dl>
|
|
|
1170 |
* The setting of this field affects the interpretation of the
|
|
|
1171 |
* <code>endDay</code> field.
|
|
|
1172 |
* <p>If <code>useDaylight</code> is false, this value is ignored.
|
|
|
1173 |
* @serial
|
|
|
1174 |
* @since 1.1.4
|
|
|
1175 |
*/
|
|
|
1176 |
private int endMode;
|
|
|
1177 |
|
|
|
1178 |
/**
|
|
|
1179 |
* A positive value indicating the amount of time saved during DST in
|
|
|
1180 |
* milliseconds.
|
|
|
1181 |
* Typically one hour (3600000); sometimes 30 minutes (1800000).
|
|
|
1182 |
* <p>If <code>useDaylight</code> is false, this value is ignored.
|
|
|
1183 |
* @serial
|
|
|
1184 |
* @since 1.1.4
|
|
|
1185 |
*/
|
|
|
1186 |
private int dstSavings;
|
|
|
1187 |
|
|
|
1188 |
private static final Gregorian gcal = CalendarSystem.getGregorianCalendar();
|
|
|
1189 |
|
|
|
1190 |
/**
|
|
|
1191 |
* Cache values representing a single period of daylight saving
|
|
|
1192 |
* time. When the cache values are valid, cacheStart is the start
|
|
|
1193 |
* time (inclusive) of daylight saving time and cacheEnd is the
|
|
|
1194 |
* end time (exclusive).
|
|
|
1195 |
*
|
|
|
1196 |
* cacheYear has a year value if both cacheStart and cacheEnd are
|
|
|
1197 |
* in the same year. cacheYear is set to startYear - 1 if
|
|
|
1198 |
* cacheStart and cacheEnd are in different years. cacheStart is 0
|
|
|
1199 |
* if the cache values are void. cacheYear is a long to support
|
|
|
1200 |
* Integer.MIN_VALUE - 1 (JCK requirement).
|
|
|
1201 |
*/
|
|
|
1202 |
private transient long cacheYear;
|
|
|
1203 |
private transient long cacheStart;
|
|
|
1204 |
private transient long cacheEnd;
|
|
|
1205 |
|
|
|
1206 |
/**
|
|
|
1207 |
* Constants specifying values of startMode and endMode.
|
|
|
1208 |
*/
|
|
|
1209 |
private static final int DOM_MODE = 1; // Exact day of month, "Mar 1"
|
|
|
1210 |
private static final int DOW_IN_MONTH_MODE = 2; // Day of week in month, "lastSun"
|
|
|
1211 |
private static final int DOW_GE_DOM_MODE = 3; // Day of week after day of month, "Sun>=15"
|
|
|
1212 |
private static final int DOW_LE_DOM_MODE = 4; // Day of week before day of month, "Sun<=21"
|
|
|
1213 |
|
|
|
1214 |
/**
|
|
|
1215 |
* Constant for a mode of start or end time specified as wall clock
|
|
|
1216 |
* time. Wall clock time is standard time for the onset rule, and
|
|
|
1217 |
* daylight time for the end rule.
|
|
|
1218 |
* @since 1.4
|
|
|
1219 |
*/
|
|
|
1220 |
public static final int WALL_TIME = 0; // Zero for backward compatibility
|
|
|
1221 |
|
|
|
1222 |
/**
|
|
|
1223 |
* Constant for a mode of start or end time specified as standard time.
|
|
|
1224 |
* @since 1.4
|
|
|
1225 |
*/
|
|
|
1226 |
public static final int STANDARD_TIME = 1;
|
|
|
1227 |
|
|
|
1228 |
/**
|
|
|
1229 |
* Constant for a mode of start or end time specified as UTC. European
|
|
|
1230 |
* Union rules are specified as UTC time, for example.
|
|
|
1231 |
* @since 1.4
|
|
|
1232 |
*/
|
|
|
1233 |
public static final int UTC_TIME = 2;
|
|
|
1234 |
|
|
|
1235 |
// Proclaim compatibility with 1.1
|
|
|
1236 |
static final long serialVersionUID = -403250971215465050L;
|
|
|
1237 |
|
|
|
1238 |
// the internal serial version which says which version was written
|
|
|
1239 |
// - 0 (default) for version up to JDK 1.1.3
|
|
|
1240 |
// - 1 for version from JDK 1.1.4, which includes 3 new fields
|
|
|
1241 |
// - 2 for JDK 1.3, which includes 2 new fields
|
|
|
1242 |
static final int currentSerialVersion = 2;
|
|
|
1243 |
|
|
|
1244 |
/**
|
|
|
1245 |
* The version of the serialized data on the stream. Possible values:
|
|
|
1246 |
* <dl>
|
|
|
1247 |
* <dt><b>0</b> or not present on stream</dt>
|
|
|
1248 |
* <dd>
|
|
|
1249 |
* JDK 1.1.3 or earlier.
|
|
|
1250 |
* </dd>
|
|
|
1251 |
* <dt><b>1</b></dt>
|
|
|
1252 |
* <dd>
|
|
|
1253 |
* JDK 1.1.4 or later. Includes three new fields: <code>startMode</code>,
|
|
|
1254 |
* <code>endMode</code>, and <code>dstSavings</code>.
|
|
|
1255 |
* </dd>
|
|
|
1256 |
* <dt><b>2</b></dt>
|
|
|
1257 |
* <dd>
|
|
|
1258 |
* JDK 1.3 or later. Includes two new fields: <code>startTimeMode</code>
|
|
|
1259 |
* and <code>endTimeMode</code>.
|
|
|
1260 |
* </dd>
|
|
|
1261 |
* </dl>
|
|
|
1262 |
* When streaming out this class, the most recent format
|
|
|
1263 |
* and the highest allowable <code>serialVersionOnStream</code>
|
|
|
1264 |
* is written.
|
|
|
1265 |
* @serial
|
|
|
1266 |
* @since 1.1.4
|
|
|
1267 |
*/
|
|
|
1268 |
private int serialVersionOnStream = currentSerialVersion;
|
|
|
1269 |
|
|
|
1270 |
synchronized private void invalidateCache() {
|
|
|
1271 |
cacheYear = startYear - 1;
|
|
|
1272 |
cacheStart = cacheEnd = 0;
|
|
|
1273 |
}
|
|
|
1274 |
|
|
|
1275 |
//----------------------------------------------------------------------
|
|
|
1276 |
// Rule representation
|
|
|
1277 |
//
|
|
|
1278 |
// We represent the following flavors of rules:
|
|
|
1279 |
// 5 the fifth of the month
|
|
|
1280 |
// lastSun the last Sunday in the month
|
|
|
1281 |
// lastMon the last Monday in the month
|
|
|
1282 |
// Sun>=8 first Sunday on or after the eighth
|
|
|
1283 |
// Sun<=25 last Sunday on or before the 25th
|
|
|
1284 |
// This is further complicated by the fact that we need to remain
|
|
|
1285 |
// backward compatible with the 1.1 FCS. Finally, we need to minimize
|
|
|
1286 |
// API changes. In order to satisfy these requirements, we support
|
|
|
1287 |
// three representation systems, and we translate between them.
|
|
|
1288 |
//
|
|
|
1289 |
// INTERNAL REPRESENTATION
|
|
|
1290 |
// This is the format SimpleTimeZone objects take after construction or
|
|
|
1291 |
// streaming in is complete. Rules are represented directly, using an
|
|
|
1292 |
// unencoded format. We will discuss the start rule only below; the end
|
|
|
1293 |
// rule is analogous.
|
|
|
1294 |
// startMode Takes on enumerated values DAY_OF_MONTH,
|
|
|
1295 |
// DOW_IN_MONTH, DOW_AFTER_DOM, or DOW_BEFORE_DOM.
|
|
|
1296 |
// startDay The day of the month, or for DOW_IN_MONTH mode, a
|
|
|
1297 |
// value indicating which DOW, such as +1 for first,
|
|
|
1298 |
// +2 for second, -1 for last, etc.
|
|
|
1299 |
// startDayOfWeek The day of the week. Ignored for DAY_OF_MONTH.
|
|
|
1300 |
//
|
|
|
1301 |
// ENCODED REPRESENTATION
|
|
|
1302 |
// This is the format accepted by the constructor and by setStartRule()
|
|
|
1303 |
// and setEndRule(). It uses various combinations of positive, negative,
|
|
|
1304 |
// and zero values to encode the different rules. This representation
|
|
|
1305 |
// allows us to specify all the different rule flavors without altering
|
|
|
1306 |
// the API.
|
|
|
1307 |
// MODE startMonth startDay startDayOfWeek
|
|
|
1308 |
// DOW_IN_MONTH_MODE >=0 !=0 >0
|
|
|
1309 |
// DOM_MODE >=0 >0 ==0
|
|
|
1310 |
// DOW_GE_DOM_MODE >=0 >0 <0
|
|
|
1311 |
// DOW_LE_DOM_MODE >=0 <0 <0
|
|
|
1312 |
// (no DST) don't care ==0 don't care
|
|
|
1313 |
//
|
|
|
1314 |
// STREAMED REPRESENTATION
|
|
|
1315 |
// We must retain binary compatibility with the 1.1 FCS. The 1.1 code only
|
|
|
1316 |
// handles DOW_IN_MONTH_MODE and non-DST mode, the latter indicated by the
|
|
|
1317 |
// flag useDaylight. When we stream an object out, we translate into an
|
|
|
1318 |
// approximate DOW_IN_MONTH_MODE representation so the object can be parsed
|
|
|
1319 |
// and used by 1.1 code. Following that, we write out the full
|
|
|
1320 |
// representation separately so that contemporary code can recognize and
|
|
|
1321 |
// parse it. The full representation is written in a "packed" format,
|
|
|
1322 |
// consisting of a version number, a length, and an array of bytes. Future
|
|
|
1323 |
// versions of this class may specify different versions. If they wish to
|
|
|
1324 |
// include additional data, they should do so by storing them after the
|
|
|
1325 |
// packed representation below.
|
|
|
1326 |
//----------------------------------------------------------------------
|
|
|
1327 |
|
|
|
1328 |
/**
|
|
|
1329 |
* Given a set of encoded rules in startDay and startDayOfMonth, decode
|
|
|
1330 |
* them and set the startMode appropriately. Do the same for endDay and
|
|
|
1331 |
* endDayOfMonth. Upon entry, the day of week variables may be zero or
|
|
|
1332 |
* negative, in order to indicate special modes. The day of month
|
|
|
1333 |
* variables may also be negative. Upon exit, the mode variables will be
|
|
|
1334 |
* set, and the day of week and day of month variables will be positive.
|
|
|
1335 |
* This method also recognizes a startDay or endDay of zero as indicating
|
|
|
1336 |
* no DST.
|
|
|
1337 |
*/
|
|
|
1338 |
private void decodeRules()
|
|
|
1339 |
{
|
|
|
1340 |
decodeStartRule();
|
|
|
1341 |
decodeEndRule();
|
|
|
1342 |
}
|
|
|
1343 |
|
|
|
1344 |
/**
|
|
|
1345 |
* Decode the start rule and validate the parameters. The parameters are
|
|
|
1346 |
* expected to be in encoded form, which represents the various rule modes
|
|
|
1347 |
* by negating or zeroing certain values. Representation formats are:
|
|
|
1348 |
* <p>
|
|
|
1349 |
* <pre>
|
|
|
1350 |
* DOW_IN_MONTH DOM DOW>=DOM DOW<=DOM no DST
|
|
|
1351 |
* ------------ ----- -------- -------- ----------
|
|
|
1352 |
* month 0..11 same same same don't care
|
|
|
1353 |
* day -5..5 1..31 1..31 -1..-31 0
|
|
|
1354 |
* dayOfWeek 1..7 0 -1..-7 -1..-7 don't care
|
|
|
1355 |
* time 0..ONEDAY same same same don't care
|
|
|
1356 |
* </pre>
|
|
|
1357 |
* The range for month does not include UNDECIMBER since this class is
|
|
|
1358 |
* really specific to GregorianCalendar, which does not use that month.
|
|
|
1359 |
* The range for time includes ONEDAY (vs. ending at ONEDAY-1) because the
|
|
|
1360 |
* end rule is an exclusive limit point. That is, the range of times that
|
|
|
1361 |
* are in DST include those >= the start and < the end. For this reason,
|
|
|
1362 |
* it should be possible to specify an end of ONEDAY in order to include the
|
|
|
1363 |
* entire day. Although this is equivalent to time 0 of the following day,
|
|
|
1364 |
* it's not always possible to specify that, for example, on December 31.
|
|
|
1365 |
* While arguably the start range should still be 0..ONEDAY-1, we keep
|
|
|
1366 |
* the start and end ranges the same for consistency.
|
|
|
1367 |
*/
|
|
|
1368 |
private void decodeStartRule() {
|
|
|
1369 |
useDaylight = (startDay != 0) && (endDay != 0);
|
|
|
1370 |
if (startDay != 0) {
|
|
|
1371 |
if (startMonth < Calendar.JANUARY || startMonth > Calendar.DECEMBER) {
|
|
|
1372 |
throw new IllegalArgumentException(
|
|
|
1373 |
"Illegal start month " + startMonth);
|
|
|
1374 |
}
|
|
|
1375 |
if (startTime < 0 || startTime >= millisPerDay) {
|
|
|
1376 |
throw new IllegalArgumentException(
|
|
|
1377 |
"Illegal start time " + startTime);
|
|
|
1378 |
}
|
|
|
1379 |
if (startDayOfWeek == 0) {
|
|
|
1380 |
startMode = DOM_MODE;
|
|
|
1381 |
} else {
|
|
|
1382 |
if (startDayOfWeek > 0) {
|
|
|
1383 |
startMode = DOW_IN_MONTH_MODE;
|
|
|
1384 |
} else {
|
|
|
1385 |
startDayOfWeek = -startDayOfWeek;
|
|
|
1386 |
if (startDay > 0) {
|
|
|
1387 |
startMode = DOW_GE_DOM_MODE;
|
|
|
1388 |
} else {
|
|
|
1389 |
startDay = -startDay;
|
|
|
1390 |
startMode = DOW_LE_DOM_MODE;
|
|
|
1391 |
}
|
|
|
1392 |
}
|
|
|
1393 |
if (startDayOfWeek > Calendar.SATURDAY) {
|
|
|
1394 |
throw new IllegalArgumentException(
|
|
|
1395 |
"Illegal start day of week " + startDayOfWeek);
|
|
|
1396 |
}
|
|
|
1397 |
}
|
|
|
1398 |
if (startMode == DOW_IN_MONTH_MODE) {
|
|
|
1399 |
if (startDay < -5 || startDay > 5) {
|
|
|
1400 |
throw new IllegalArgumentException(
|
|
|
1401 |
"Illegal start day of week in month " + startDay);
|
|
|
1402 |
}
|
|
|
1403 |
} else if (startDay < 1 || startDay > staticMonthLength[startMonth]) {
|
|
|
1404 |
throw new IllegalArgumentException(
|
|
|
1405 |
"Illegal start day " + startDay);
|
|
|
1406 |
}
|
|
|
1407 |
}
|
|
|
1408 |
}
|
|
|
1409 |
|
|
|
1410 |
/**
|
|
|
1411 |
* Decode the end rule and validate the parameters. This method is exactly
|
|
|
1412 |
* analogous to decodeStartRule().
|
|
|
1413 |
* @see decodeStartRule
|
|
|
1414 |
*/
|
|
|
1415 |
private void decodeEndRule() {
|
|
|
1416 |
useDaylight = (startDay != 0) && (endDay != 0);
|
|
|
1417 |
if (endDay != 0) {
|
|
|
1418 |
if (endMonth < Calendar.JANUARY || endMonth > Calendar.DECEMBER) {
|
|
|
1419 |
throw new IllegalArgumentException(
|
|
|
1420 |
"Illegal end month " + endMonth);
|
|
|
1421 |
}
|
|
|
1422 |
if (endTime < 0 || endTime >= millisPerDay) {
|
|
|
1423 |
throw new IllegalArgumentException(
|
|
|
1424 |
"Illegal end time " + endTime);
|
|
|
1425 |
}
|
|
|
1426 |
if (endDayOfWeek == 0) {
|
|
|
1427 |
endMode = DOM_MODE;
|
|
|
1428 |
} else {
|
|
|
1429 |
if (endDayOfWeek > 0) {
|
|
|
1430 |
endMode = DOW_IN_MONTH_MODE;
|
|
|
1431 |
} else {
|
|
|
1432 |
endDayOfWeek = -endDayOfWeek;
|
|
|
1433 |
if (endDay > 0) {
|
|
|
1434 |
endMode = DOW_GE_DOM_MODE;
|
|
|
1435 |
} else {
|
|
|
1436 |
endDay = -endDay;
|
|
|
1437 |
endMode = DOW_LE_DOM_MODE;
|
|
|
1438 |
}
|
|
|
1439 |
}
|
|
|
1440 |
if (endDayOfWeek > Calendar.SATURDAY) {
|
|
|
1441 |
throw new IllegalArgumentException(
|
|
|
1442 |
"Illegal end day of week " + endDayOfWeek);
|
|
|
1443 |
}
|
|
|
1444 |
}
|
|
|
1445 |
if (endMode == DOW_IN_MONTH_MODE) {
|
|
|
1446 |
if (endDay < -5 || endDay > 5) {
|
|
|
1447 |
throw new IllegalArgumentException(
|
|
|
1448 |
"Illegal end day of week in month " + endDay);
|
|
|
1449 |
}
|
|
|
1450 |
} else if (endDay < 1 || endDay > staticMonthLength[endMonth]) {
|
|
|
1451 |
throw new IllegalArgumentException(
|
|
|
1452 |
"Illegal end day " + endDay);
|
|
|
1453 |
}
|
|
|
1454 |
}
|
|
|
1455 |
}
|
|
|
1456 |
|
|
|
1457 |
/**
|
|
|
1458 |
* Make rules compatible to 1.1 FCS code. Since 1.1 FCS code only understands
|
|
|
1459 |
* day-of-week-in-month rules, we must modify other modes of rules to their
|
|
|
1460 |
* approximate equivalent in 1.1 FCS terms. This method is used when streaming
|
|
|
1461 |
* out objects of this class. After it is called, the rules will be modified,
|
|
|
1462 |
* with a possible loss of information. startMode and endMode will NOT be
|
|
|
1463 |
* altered, even though semantically they should be set to DOW_IN_MONTH_MODE,
|
|
|
1464 |
* since the rule modification is only intended to be temporary.
|
|
|
1465 |
*/
|
|
|
1466 |
private void makeRulesCompatible()
|
|
|
1467 |
{
|
|
|
1468 |
switch (startMode) {
|
|
|
1469 |
case DOM_MODE:
|
|
|
1470 |
startDay = 1 + (startDay / 7);
|
|
|
1471 |
startDayOfWeek = Calendar.SUNDAY;
|
|
|
1472 |
break;
|
|
|
1473 |
|
|
|
1474 |
case DOW_GE_DOM_MODE:
|
|
|
1475 |
// A day-of-month of 1 is equivalent to DOW_IN_MONTH_MODE
|
|
|
1476 |
// that is, Sun>=1 == firstSun.
|
|
|
1477 |
if (startDay != 1) {
|
|
|
1478 |
startDay = 1 + (startDay / 7);
|
|
|
1479 |
}
|
|
|
1480 |
break;
|
|
|
1481 |
|
|
|
1482 |
case DOW_LE_DOM_MODE:
|
|
|
1483 |
if (startDay >= 30) {
|
|
|
1484 |
startDay = -1;
|
|
|
1485 |
} else {
|
|
|
1486 |
startDay = 1 + (startDay / 7);
|
|
|
1487 |
}
|
|
|
1488 |
break;
|
|
|
1489 |
}
|
|
|
1490 |
|
|
|
1491 |
switch (endMode) {
|
|
|
1492 |
case DOM_MODE:
|
|
|
1493 |
endDay = 1 + (endDay / 7);
|
|
|
1494 |
endDayOfWeek = Calendar.SUNDAY;
|
|
|
1495 |
break;
|
|
|
1496 |
|
|
|
1497 |
case DOW_GE_DOM_MODE:
|
|
|
1498 |
// A day-of-month of 1 is equivalent to DOW_IN_MONTH_MODE
|
|
|
1499 |
// that is, Sun>=1 == firstSun.
|
|
|
1500 |
if (endDay != 1) {
|
|
|
1501 |
endDay = 1 + (endDay / 7);
|
|
|
1502 |
}
|
|
|
1503 |
break;
|
|
|
1504 |
|
|
|
1505 |
case DOW_LE_DOM_MODE:
|
|
|
1506 |
if (endDay >= 30) {
|
|
|
1507 |
endDay = -1;
|
|
|
1508 |
} else {
|
|
|
1509 |
endDay = 1 + (endDay / 7);
|
|
|
1510 |
}
|
|
|
1511 |
break;
|
|
|
1512 |
}
|
|
|
1513 |
|
|
|
1514 |
/*
|
|
|
1515 |
* Adjust the start and end times to wall time. This works perfectly
|
|
|
1516 |
* well unless it pushes into the next or previous day. If that
|
|
|
1517 |
* happens, we attempt to adjust the day rule somewhat crudely. The day
|
|
|
1518 |
* rules have been forced into DOW_IN_MONTH mode already, so we change
|
|
|
1519 |
* the day of week to move forward or back by a day. It's possible to
|
|
|
1520 |
* make a more refined adjustment of the original rules first, but in
|
|
|
1521 |
* most cases this extra effort will go to waste once we adjust the day
|
|
|
1522 |
* rules anyway.
|
|
|
1523 |
*/
|
|
|
1524 |
switch (startTimeMode) {
|
|
|
1525 |
case UTC_TIME:
|
|
|
1526 |
startTime += rawOffset;
|
|
|
1527 |
break;
|
|
|
1528 |
}
|
|
|
1529 |
while (startTime < 0) {
|
|
|
1530 |
startTime += millisPerDay;
|
|
|
1531 |
startDayOfWeek = 1 + ((startDayOfWeek+5) % 7); // Back 1 day
|
|
|
1532 |
}
|
|
|
1533 |
while (startTime >= millisPerDay) {
|
|
|
1534 |
startTime -= millisPerDay;
|
|
|
1535 |
startDayOfWeek = 1 + (startDayOfWeek % 7); // Forward 1 day
|
|
|
1536 |
}
|
|
|
1537 |
|
|
|
1538 |
switch (endTimeMode) {
|
|
|
1539 |
case UTC_TIME:
|
|
|
1540 |
endTime += rawOffset + dstSavings;
|
|
|
1541 |
break;
|
|
|
1542 |
case STANDARD_TIME:
|
|
|
1543 |
endTime += dstSavings;
|
|
|
1544 |
}
|
|
|
1545 |
while (endTime < 0) {
|
|
|
1546 |
endTime += millisPerDay;
|
|
|
1547 |
endDayOfWeek = 1 + ((endDayOfWeek+5) % 7); // Back 1 day
|
|
|
1548 |
}
|
|
|
1549 |
while (endTime >= millisPerDay) {
|
|
|
1550 |
endTime -= millisPerDay;
|
|
|
1551 |
endDayOfWeek = 1 + (endDayOfWeek % 7); // Forward 1 day
|
|
|
1552 |
}
|
|
|
1553 |
}
|
|
|
1554 |
|
|
|
1555 |
/**
|
|
|
1556 |
* Pack the start and end rules into an array of bytes. Only pack
|
|
|
1557 |
* data which is not preserved by makeRulesCompatible.
|
|
|
1558 |
*/
|
|
|
1559 |
private byte[] packRules()
|
|
|
1560 |
{
|
|
|
1561 |
byte[] rules = new byte[6];
|
|
|
1562 |
rules[0] = (byte)startDay;
|
|
|
1563 |
rules[1] = (byte)startDayOfWeek;
|
|
|
1564 |
rules[2] = (byte)endDay;
|
|
|
1565 |
rules[3] = (byte)endDayOfWeek;
|
|
|
1566 |
|
|
|
1567 |
// As of serial version 2, include time modes
|
|
|
1568 |
rules[4] = (byte)startTimeMode;
|
|
|
1569 |
rules[5] = (byte)endTimeMode;
|
|
|
1570 |
|
|
|
1571 |
return rules;
|
|
|
1572 |
}
|
|
|
1573 |
|
|
|
1574 |
/**
|
|
|
1575 |
* Given an array of bytes produced by packRules, interpret them
|
|
|
1576 |
* as the start and end rules.
|
|
|
1577 |
*/
|
|
|
1578 |
private void unpackRules(byte[] rules)
|
|
|
1579 |
{
|
|
|
1580 |
startDay = rules[0];
|
|
|
1581 |
startDayOfWeek = rules[1];
|
|
|
1582 |
endDay = rules[2];
|
|
|
1583 |
endDayOfWeek = rules[3];
|
|
|
1584 |
|
|
|
1585 |
// As of serial version 2, include time modes
|
|
|
1586 |
if (rules.length >= 6) {
|
|
|
1587 |
startTimeMode = rules[4];
|
|
|
1588 |
endTimeMode = rules[5];
|
|
|
1589 |
}
|
|
|
1590 |
}
|
|
|
1591 |
|
|
|
1592 |
/**
|
|
|
1593 |
* Pack the start and end times into an array of bytes. This is required
|
|
|
1594 |
* as of serial version 2.
|
|
|
1595 |
*/
|
|
|
1596 |
private int[] packTimes() {
|
|
|
1597 |
int[] times = new int[2];
|
|
|
1598 |
times[0] = startTime;
|
|
|
1599 |
times[1] = endTime;
|
|
|
1600 |
return times;
|
|
|
1601 |
}
|
|
|
1602 |
|
|
|
1603 |
/**
|
|
|
1604 |
* Unpack the start and end times from an array of bytes. This is required
|
|
|
1605 |
* as of serial version 2.
|
|
|
1606 |
*/
|
|
|
1607 |
private void unpackTimes(int[] times) {
|
|
|
1608 |
startTime = times[0];
|
|
|
1609 |
endTime = times[1];
|
|
|
1610 |
}
|
|
|
1611 |
|
|
|
1612 |
/**
|
|
|
1613 |
* Save the state of this object to a stream (i.e., serialize it).
|
|
|
1614 |
*
|
|
|
1615 |
* @serialData We write out two formats, a JDK 1.1 compatible format, using
|
|
|
1616 |
* <code>DOW_IN_MONTH_MODE</code> rules, in the required section, followed
|
|
|
1617 |
* by the full rules, in packed format, in the optional section. The
|
|
|
1618 |
* optional section will be ignored by JDK 1.1 code upon stream in.
|
|
|
1619 |
* <p> Contents of the optional section: The length of a byte array is
|
|
|
1620 |
* emitted (int); this is 4 as of this release. The byte array of the given
|
|
|
1621 |
* length is emitted. The contents of the byte array are the true values of
|
|
|
1622 |
* the fields <code>startDay</code>, <code>startDayOfWeek</code>,
|
|
|
1623 |
* <code>endDay</code>, and <code>endDayOfWeek</code>. The values of these
|
|
|
1624 |
* fields in the required section are approximate values suited to the rule
|
|
|
1625 |
* mode <code>DOW_IN_MONTH_MODE</code>, which is the only mode recognized by
|
|
|
1626 |
* JDK 1.1.
|
|
|
1627 |
*/
|
|
|
1628 |
private void writeObject(ObjectOutputStream stream)
|
|
|
1629 |
throws IOException
|
|
|
1630 |
{
|
|
|
1631 |
// Construct a binary rule
|
|
|
1632 |
byte[] rules = packRules();
|
|
|
1633 |
int[] times = packTimes();
|
|
|
1634 |
|
|
|
1635 |
// Convert to 1.1 FCS rules. This step may cause us to lose information.
|
|
|
1636 |
makeRulesCompatible();
|
|
|
1637 |
|
|
|
1638 |
// Write out the 1.1 FCS rules
|
|
|
1639 |
stream.defaultWriteObject();
|
|
|
1640 |
|
|
|
1641 |
// Write out the binary rules in the optional data area of the stream.
|
|
|
1642 |
stream.writeInt(rules.length);
|
|
|
1643 |
stream.write(rules);
|
|
|
1644 |
stream.writeObject(times);
|
|
|
1645 |
|
|
|
1646 |
// Recover the original rules. This recovers the information lost
|
|
|
1647 |
// by makeRulesCompatible.
|
|
|
1648 |
unpackRules(rules);
|
|
|
1649 |
unpackTimes(times);
|
|
|
1650 |
}
|
|
|
1651 |
|
|
|
1652 |
/**
|
|
|
1653 |
* Reconstitute this object from a stream (i.e., deserialize it).
|
|
|
1654 |
*
|
|
|
1655 |
* We handle both JDK 1.1
|
|
|
1656 |
* binary formats and full formats with a packed byte array.
|
|
|
1657 |
*/
|
|
|
1658 |
private void readObject(ObjectInputStream stream)
|
|
|
1659 |
throws IOException, ClassNotFoundException
|
|
|
1660 |
{
|
|
|
1661 |
stream.defaultReadObject();
|
|
|
1662 |
|
|
|
1663 |
if (serialVersionOnStream < 1) {
|
|
|
1664 |
// Fix a bug in the 1.1 SimpleTimeZone code -- namely,
|
|
|
1665 |
// startDayOfWeek and endDayOfWeek were usually uninitialized. We can't do
|
|
|
1666 |
// too much, so we assume SUNDAY, which actually works most of the time.
|
|
|
1667 |
if (startDayOfWeek == 0) {
|
|
|
1668 |
startDayOfWeek = Calendar.SUNDAY;
|
|
|
1669 |
}
|
|
|
1670 |
if (endDayOfWeek == 0) {
|
|
|
1671 |
endDayOfWeek = Calendar.SUNDAY;
|
|
|
1672 |
}
|
|
|
1673 |
|
|
|
1674 |
// The variables dstSavings, startMode, and endMode are post-1.1, so they
|
|
|
1675 |
// won't be present if we're reading from a 1.1 stream. Fix them up.
|
|
|
1676 |
startMode = endMode = DOW_IN_MONTH_MODE;
|
|
|
1677 |
dstSavings = millisPerHour;
|
|
|
1678 |
} else {
|
|
|
1679 |
// For 1.1.4, in addition to the 3 new instance variables, we also
|
|
|
1680 |
// store the actual rules (which have not be made compatible with 1.1)
|
|
|
1681 |
// in the optional area. Read them in here and parse them.
|
|
|
1682 |
int length = stream.readInt();
|
|
|
1683 |
byte[] rules = new byte[length];
|
|
|
1684 |
stream.readFully(rules);
|
|
|
1685 |
unpackRules(rules);
|
|
|
1686 |
}
|
|
|
1687 |
|
|
|
1688 |
if (serialVersionOnStream >= 2) {
|
|
|
1689 |
int[] times = (int[]) stream.readObject();
|
|
|
1690 |
unpackTimes(times);
|
|
|
1691 |
}
|
|
|
1692 |
|
|
|
1693 |
serialVersionOnStream = currentSerialVersion;
|
|
|
1694 |
}
|
|
|
1695 |
}
|