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* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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/*
* Copyright (c) 2011-2012, Stephen Colebourne & Michael Nascimento Santos
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of JSR-310 nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package java.time.chrono;
import java.io.
Externalizable;
import java.io.
IOException;
import java.io.
InvalidClassException;
import java.io.
ObjectInput;
import java.io.
ObjectOutput;
import java.io.
StreamCorruptedException;
import java.time.
LocalDate;
import java.time.
LocalDateTime;
/**
* The shared serialization delegate for this package.
*
* @implNote
* This class wraps the object being serialized, and takes a byte representing the type of the class to
* be serialized. This byte can also be used for versioning the serialization format. In this case another
* byte flag would be used in order to specify an alternative version of the type format.
* For example {@code CHRONO_TYPE_VERSION_2 = 21}
* <p>
* In order to serialize the object it writes its byte and then calls back to the appropriate class where
* the serialization is performed. In order to deserialize the object it read in the type byte, switching
* in order to select which class to call back into.
* <p>
* The serialization format is determined on a per class basis. In the case of field based classes each
* of the fields is written out with an appropriate size format in descending order of the field's size. For
* example in the case of {@link LocalDate} year is written before month. Composite classes, such as
* {@link LocalDateTime} are serialized as one object. Enum classes are serialized using the index of their
* element.
* <p>
* This class is mutable and should be created once per serialization.
*
* @serial include
* @since 1.8
*/
final class
Ser implements
Externalizable {
/**
* Serialization version.
*/
private static final long
serialVersionUID = -6103370247208168577L;
static final byte
CHRONO_TYPE = 1;
static final byte
CHRONO_LOCAL_DATE_TIME_TYPE = 2;
static final byte
CHRONO_ZONE_DATE_TIME_TYPE = 3;
static final byte
JAPANESE_DATE_TYPE = 4;
static final byte
JAPANESE_ERA_TYPE = 5;
static final byte
HIJRAH_DATE_TYPE = 6;
static final byte
MINGUO_DATE_TYPE = 7;
static final byte
THAIBUDDHIST_DATE_TYPE = 8;
static final byte
CHRONO_PERIOD_TYPE = 9;
/** The type being serialized. */
private byte
type;
/** The object being serialized. */
private
Object object;
/**
* Constructor for deserialization.
*/
public
Ser() {
}
/**
* Creates an instance for serialization.
*
* @param type the type
* @param object the object
*/
Ser(byte
type,
Object object) {
this.
type =
type;
this.
object =
object;
}
//-----------------------------------------------------------------------
/**
* Implements the {@code Externalizable} interface to write the object.
* @serialData
* Each serializable class is mapped to a type that is the first byte
* in the stream. Refer to each class {@code writeReplace}
* serialized form for the value of the type and sequence of values for the type.
* <ul>
* <li><a href="../../../serialized-form.html#java.time.chrono.HijrahChronology">HijrahChronology.writeReplace</a>
* <li><a href="../../../serialized-form.html#java.time.chrono.IsoChronology">IsoChronology.writeReplace</a>
* <li><a href="../../../serialized-form.html#java.time.chrono.JapaneseChronology">JapaneseChronology.writeReplace</a>
* <li><a href="../../../serialized-form.html#java.time.chrono.MinguoChronology">MinguoChronology.writeReplace</a>
* <li><a href="../../../serialized-form.html#java.time.chrono.ThaiBuddhistChronology">ThaiBuddhistChronology.writeReplace</a>
* <li><a href="../../../serialized-form.html#java.time.chrono.ChronoLocalDateTimeImpl">ChronoLocalDateTime.writeReplace</a>
* <li><a href="../../../serialized-form.html#java.time.chrono.ChronoZonedDateTimeImpl">ChronoZonedDateTime.writeReplace</a>
* <li><a href="../../../serialized-form.html#java.time.chrono.JapaneseDate">JapaneseDate.writeReplace</a>
* <li><a href="../../../serialized-form.html#java.time.chrono.JapaneseEra">JapaneseEra.writeReplace</a>
* <li><a href="../../../serialized-form.html#java.time.chrono.HijrahDate">HijrahDate.writeReplace</a>
* <li><a href="../../../serialized-form.html#java.time.chrono.MinguoDate">MinguoDate.writeReplace</a>
* <li><a href="../../../serialized-form.html#java.time.chrono.ThaiBuddhistDate">ThaiBuddhistDate.writeReplace</a>
* </ul>
*
* @param out the data stream to write to, not null
*/
@
Override
public void
writeExternal(
ObjectOutput out) throws
IOException {
writeInternal(
type,
object,
out);
}
private static void
writeInternal(byte
type,
Object object,
ObjectOutput out) throws
IOException {
out.
writeByte(
type);
switch (
type) {
case
CHRONO_TYPE:
((
AbstractChronology)
object).
writeExternal(
out);
break;
case
CHRONO_LOCAL_DATE_TIME_TYPE:
((
ChronoLocalDateTimeImpl<?>)
object).
writeExternal(
out);
break;
case
CHRONO_ZONE_DATE_TIME_TYPE:
((
ChronoZonedDateTimeImpl<?>)
object).
writeExternal(
out);
break;
case
JAPANESE_DATE_TYPE:
((
JapaneseDate)
object).
writeExternal(
out);
break;
case
JAPANESE_ERA_TYPE:
((
JapaneseEra)
object).
writeExternal(
out);
break;
case
HIJRAH_DATE_TYPE:
((
HijrahDate)
object).
writeExternal(
out);
break;
case
MINGUO_DATE_TYPE:
((
MinguoDate)
object).
writeExternal(
out);
break;
case
THAIBUDDHIST_DATE_TYPE:
((
ThaiBuddhistDate)
object).
writeExternal(
out);
break;
case
CHRONO_PERIOD_TYPE:
((
ChronoPeriodImpl)
object).
writeExternal(
out);
break;
default:
throw new
InvalidClassException("Unknown serialized type");
}
}
//-----------------------------------------------------------------------
/**
* Implements the {@code Externalizable} interface to read the object.
* @serialData
* The streamed type and parameters defined by the type's {@code writeReplace}
* method are read and passed to the corresponding static factory for the type
* to create a new instance. That instance is returned as the de-serialized
* {@code Ser} object.
*
* <ul>
* <li><a href="../../../serialized-form.html#java.time.chrono.HijrahChronology">HijrahChronology</a> - Chronology.of(id)
* <li><a href="../../../serialized-form.html#java.time.chrono.IsoChronology">IsoChronology</a> - Chronology.of(id)
* <li><a href="../../../serialized-form.html#java.time.chrono.JapaneseChronology">JapaneseChronology</a> - Chronology.of(id)
* <li><a href="../../../serialized-form.html#java.time.chrono.MinguoChronology">MinguoChronology</a> - Chronology.of(id)
* <li><a href="../../../serialized-form.html#java.time.chrono.ThaiBuddhistChronology">ThaiBuddhistChronology</a> - Chronology.of(id)
* <li><a href="../../../serialized-form.html#java.time.chrono.ChronoLocalDateTimeImpl">ChronoLocalDateTime</a> - date.atTime(time)
* <li><a href="../../../serialized-form.html#java.time.chrono.ChronoZonedDateTimeImpl">ChronoZonedDateTime</a> - dateTime.atZone(offset).withZoneSameLocal(zone)
* <li><a href="../../../serialized-form.html#java.time.chrono.JapaneseDate">JapaneseDate</a> - JapaneseChronology.INSTANCE.date(year, month, dayOfMonth)
* <li><a href="../../../serialized-form.html#java.time.chrono.JapaneseEra">JapaneseEra</a> - JapaneseEra.of(eraValue)
* <li><a href="../../../serialized-form.html#java.time.chrono.HijrahDate">HijrahDate</a> - HijrahChronology chrono.date(year, month, dayOfMonth)
* <li><a href="../../../serialized-form.html#java.time.chrono.MinguoDate">MinguoDate</a> - MinguoChronology.INSTANCE.date(year, month, dayOfMonth)
* <li><a href="../../../serialized-form.html#java.time.chrono.ThaiBuddhistDate">ThaiBuddhistDate</a> - ThaiBuddhistChronology.INSTANCE.date(year, month, dayOfMonth)
* </ul>
*
* @param in the data stream to read from, not null
*/
@
Override
public void
readExternal(
ObjectInput in) throws
IOException,
ClassNotFoundException {
type =
in.
readByte();
object =
readInternal(
type,
in);
}
static
Object read(
ObjectInput in) throws
IOException,
ClassNotFoundException {
byte
type =
in.
readByte();
return
readInternal(
type,
in);
}
private static
Object readInternal(byte
type,
ObjectInput in) throws
IOException,
ClassNotFoundException {
switch (
type) {
case
CHRONO_TYPE: return
AbstractChronology.
readExternal(
in);
case
CHRONO_LOCAL_DATE_TIME_TYPE: return
ChronoLocalDateTimeImpl.
readExternal(
in);
case
CHRONO_ZONE_DATE_TIME_TYPE: return
ChronoZonedDateTimeImpl.
readExternal(
in);
case
JAPANESE_DATE_TYPE: return
JapaneseDate.
readExternal(
in);
case
JAPANESE_ERA_TYPE: return
JapaneseEra.
readExternal(
in);
case
HIJRAH_DATE_TYPE: return
HijrahDate.
readExternal(
in);
case
MINGUO_DATE_TYPE: return
MinguoDate.
readExternal(
in);
case
THAIBUDDHIST_DATE_TYPE: return
ThaiBuddhistDate.
readExternal(
in);
case
CHRONO_PERIOD_TYPE: return
ChronoPeriodImpl.
readExternal(
in);
default: throw new
StreamCorruptedException("Unknown serialized type");
}
}
/**
* Returns the object that will replace this one.
*
* @return the read object, should never be null
*/
private
Object readResolve() {
return
object;
}
}