/* |
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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.chrono; |
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import java.io.Externalizable; |
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import java.io.IOException; |
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import java.io.InvalidClassException; |
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import java.io.ObjectInput; |
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import java.io.ObjectOutput; |
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import java.io.StreamCorruptedException; |
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import java.time.LocalDate; |
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import java.time.LocalDateTime; |
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/** |
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* The shared serialization delegate for this package. |
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* |
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* @implNote |
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* This class wraps the object being serialized, and takes a byte representing the type of the class to |
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* be serialized. This byte can also be used for versioning the serialization format. In this case another |
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* byte flag would be used in order to specify an alternative version of the type format. |
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* For example {@code CHRONO_TYPE_VERSION_2 = 21} |
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* <p> |
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* In order to serialize the object it writes its byte and then calls back to the appropriate class where |
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* the serialization is performed. In order to deserialize the object it read in the type byte, switching |
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* in order to select which class to call back into. |
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* <p> |
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* The serialization format is determined on a per class basis. In the case of field based classes each |
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* of the fields is written out with an appropriate size format in descending order of the field's size. For |
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* example in the case of {@link LocalDate} year is written before month. Composite classes, such as |
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* {@link LocalDateTime} are serialized as one object. Enum classes are serialized using the index of their |
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* element. |
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* <p> |
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* This class is mutable and should be created once per serialization. |
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* |
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* @serial include |
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* @since 1.8 |
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*/ |
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final class Ser implements Externalizable { |
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/** |
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* Serialization version. |
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*/ |
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private static final long serialVersionUID = -6103370247208168577L; |
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static final byte CHRONO_TYPE = 1; |
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static final byte CHRONO_LOCAL_DATE_TIME_TYPE = 2; |
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static final byte CHRONO_ZONE_DATE_TIME_TYPE = 3; |
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static final byte JAPANESE_DATE_TYPE = 4; |
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static final byte JAPANESE_ERA_TYPE = 5; |
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static final byte HIJRAH_DATE_TYPE = 6; |
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static final byte MINGUO_DATE_TYPE = 7; |
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static final byte THAIBUDDHIST_DATE_TYPE = 8; |
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static final byte CHRONO_PERIOD_TYPE = 9; |
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/** The type being serialized. */ |
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private byte type; |
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/** The object being serialized. */ |
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private Object object; |
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/** |
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* Constructor for deserialization. |
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*/ |
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public Ser() { |
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} |
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/** |
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* Creates an instance for serialization. |
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* |
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* @param type the type |
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* @param object the object |
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*/ |
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Ser(byte type, Object object) { |
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this.type = type; |
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this.object = object; |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Implements the {@code Externalizable} interface to write the object. |
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* @serialData |
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* Each serializable class is mapped to a type that is the first byte |
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* in the stream. Refer to each class {@code writeReplace} |
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* serialized form for the value of the type and sequence of values for the type. |
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* <ul> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.HijrahChronology">HijrahChronology.writeReplace</a> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.IsoChronology">IsoChronology.writeReplace</a> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.JapaneseChronology">JapaneseChronology.writeReplace</a> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.MinguoChronology">MinguoChronology.writeReplace</a> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.ThaiBuddhistChronology">ThaiBuddhistChronology.writeReplace</a> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.ChronoLocalDateTimeImpl">ChronoLocalDateTime.writeReplace</a> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.ChronoZonedDateTimeImpl">ChronoZonedDateTime.writeReplace</a> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.JapaneseDate">JapaneseDate.writeReplace</a> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.JapaneseEra">JapaneseEra.writeReplace</a> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.HijrahDate">HijrahDate.writeReplace</a> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.MinguoDate">MinguoDate.writeReplace</a> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.ThaiBuddhistDate">ThaiBuddhistDate.writeReplace</a> |
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* </ul> |
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* |
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* @param out the data stream to write to, not null |
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*/ |
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@Override |
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public void writeExternal(ObjectOutput out) throws IOException { |
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writeInternal(type, object, out); |
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} |
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private static void writeInternal(byte type, Object object, ObjectOutput out) throws IOException { |
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out.writeByte(type); |
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switch (type) { |
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case CHRONO_TYPE: |
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((AbstractChronology) object).writeExternal(out); |
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break; |
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case CHRONO_LOCAL_DATE_TIME_TYPE: |
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((ChronoLocalDateTimeImpl<?>) object).writeExternal(out); |
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break; |
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case CHRONO_ZONE_DATE_TIME_TYPE: |
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((ChronoZonedDateTimeImpl<?>) object).writeExternal(out); |
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break; |
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case JAPANESE_DATE_TYPE: |
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((JapaneseDate) object).writeExternal(out); |
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break; |
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case JAPANESE_ERA_TYPE: |
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((JapaneseEra) object).writeExternal(out); |
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break; |
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case HIJRAH_DATE_TYPE: |
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((HijrahDate) object).writeExternal(out); |
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break; |
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case MINGUO_DATE_TYPE: |
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((MinguoDate) object).writeExternal(out); |
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break; |
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case THAIBUDDHIST_DATE_TYPE: |
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((ThaiBuddhistDate) object).writeExternal(out); |
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break; |
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case CHRONO_PERIOD_TYPE: |
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((ChronoPeriodImpl) object).writeExternal(out); |
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break; |
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default: |
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throw new InvalidClassException("Unknown serialized type"); |
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} |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Implements the {@code Externalizable} interface to read the object. |
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* @serialData |
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* The streamed type and parameters defined by the type's {@code writeReplace} |
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* method are read and passed to the corresponding static factory for the type |
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* to create a new instance. That instance is returned as the de-serialized |
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* {@code Ser} object. |
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* |
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* <ul> |
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* <li><a href="../../../serialized-form.html#java.time.chrono.HijrahChronology">HijrahChronology</a> - Chronology.of(id) |
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* <li><a href="../../../serialized-form.html#java.time.chrono.IsoChronology">IsoChronology</a> - Chronology.of(id) |
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* <li><a href="../../../serialized-form.html#java.time.chrono.JapaneseChronology">JapaneseChronology</a> - Chronology.of(id) |
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* <li><a href="../../../serialized-form.html#java.time.chrono.MinguoChronology">MinguoChronology</a> - Chronology.of(id) |
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* <li><a href="../../../serialized-form.html#java.time.chrono.ThaiBuddhistChronology">ThaiBuddhistChronology</a> - Chronology.of(id) |
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* <li><a href="../../../serialized-form.html#java.time.chrono.ChronoLocalDateTimeImpl">ChronoLocalDateTime</a> - date.atTime(time) |
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* <li><a href="../../../serialized-form.html#java.time.chrono.ChronoZonedDateTimeImpl">ChronoZonedDateTime</a> - dateTime.atZone(offset).withZoneSameLocal(zone) |
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* <li><a href="../../../serialized-form.html#java.time.chrono.JapaneseDate">JapaneseDate</a> - JapaneseChronology.INSTANCE.date(year, month, dayOfMonth) |
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* <li><a href="../../../serialized-form.html#java.time.chrono.JapaneseEra">JapaneseEra</a> - JapaneseEra.of(eraValue) |
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* <li><a href="../../../serialized-form.html#java.time.chrono.HijrahDate">HijrahDate</a> - HijrahChronology chrono.date(year, month, dayOfMonth) |
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* <li><a href="../../../serialized-form.html#java.time.chrono.MinguoDate">MinguoDate</a> - MinguoChronology.INSTANCE.date(year, month, dayOfMonth) |
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* <li><a href="../../../serialized-form.html#java.time.chrono.ThaiBuddhistDate">ThaiBuddhistDate</a> - ThaiBuddhistChronology.INSTANCE.date(year, month, dayOfMonth) |
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* </ul> |
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* |
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* @param in the data stream to read from, not null |
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*/ |
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@Override |
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public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { |
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type = in.readByte(); |
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object = readInternal(type, in); |
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} |
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static Object read(ObjectInput in) throws IOException, ClassNotFoundException { |
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byte type = in.readByte(); |
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return readInternal(type, in); |
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} |
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private static Object readInternal(byte type, ObjectInput in) throws IOException, ClassNotFoundException { |
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switch (type) { |
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case CHRONO_TYPE: return AbstractChronology.readExternal(in); |
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case CHRONO_LOCAL_DATE_TIME_TYPE: return ChronoLocalDateTimeImpl.readExternal(in); |
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case CHRONO_ZONE_DATE_TIME_TYPE: return ChronoZonedDateTimeImpl.readExternal(in); |
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case JAPANESE_DATE_TYPE: return JapaneseDate.readExternal(in); |
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case JAPANESE_ERA_TYPE: return JapaneseEra.readExternal(in); |
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case HIJRAH_DATE_TYPE: return HijrahDate.readExternal(in); |
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case MINGUO_DATE_TYPE: return MinguoDate.readExternal(in); |
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case THAIBUDDHIST_DATE_TYPE: return ThaiBuddhistDate.readExternal(in); |
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case CHRONO_PERIOD_TYPE: return ChronoPeriodImpl.readExternal(in); |
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default: throw new StreamCorruptedException("Unknown serialized type"); |
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} |
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} |
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/** |
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* Returns the object that will replace this one. |
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* |
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* @return the read object, should never be null |
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*/ |
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private Object readResolve() { |
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return object; |
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} |
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} |