| /* |
| * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * 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; |
| |
| import java.io.Externalizable; |
| import java.io.IOException; |
| import java.io.InvalidClassException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| import java.io.StreamCorruptedException; |
| |
| /** |
| * 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 LOCAL_DATE_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. |
| * <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 = -7683839454370182990L; |
| |
| static final byte DURATION_TYPE = 1; |
| static final byte INSTANT_TYPE = 2; |
| static final byte LOCAL_DATE_TYPE = 3; |
| static final byte LOCAL_TIME_TYPE = 4; |
| static final byte LOCAL_DATE_TIME_TYPE = 5; |
| static final byte ZONE_DATE_TIME_TYPE = 6; |
| static final byte ZONE_REGION_TYPE = 7; |
| static final byte ZONE_OFFSET_TYPE = 8; |
| static final byte OFFSET_TIME_TYPE = 9; |
| static final byte OFFSET_DATE_TIME_TYPE = 10; |
| static final byte YEAR_TYPE = 11; |
| static final byte YEAR_MONTH_TYPE = 12; |
| static final byte MONTH_DAY_TYPE = 13; |
| static final byte PERIOD_TYPE = 14; |
| |
| /** 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.Duration">Duration.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.Instant">Instant.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.LocalDate">LocalDate.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.LocalDateTime">LocalDateTime.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.LocalTime">LocalTime.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.MonthDay">MonthDay.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.OffsetTime">OffsetTime.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.OffsetDateTime">OffsetDateTime.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.Period">Period.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.Year">Year.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.YearMonth">YearMonth.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.ZoneId">ZoneId.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.ZoneOffset">ZoneOffset.writeReplace</a> |
| * <li><a href="../../serialized-form.html#java.time.ZonedDateTime">ZonedDateTime.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); |
| } |
| |
| static void writeInternal(byte type, Object object, ObjectOutput out) throws IOException { |
| out.writeByte(type); |
| switch (type) { |
| case DURATION_TYPE: |
| ((Duration) object).writeExternal(out); |
| break; |
| case INSTANT_TYPE: |
| ((Instant) object).writeExternal(out); |
| break; |
| case LOCAL_DATE_TYPE: |
| ((LocalDate) object).writeExternal(out); |
| break; |
| case LOCAL_DATE_TIME_TYPE: |
| ((LocalDateTime) object).writeExternal(out); |
| break; |
| case LOCAL_TIME_TYPE: |
| ((LocalTime) object).writeExternal(out); |
| break; |
| case ZONE_REGION_TYPE: |
| ((ZoneRegion) object).writeExternal(out); |
| break; |
| case ZONE_OFFSET_TYPE: |
| ((ZoneOffset) object).writeExternal(out); |
| break; |
| case ZONE_DATE_TIME_TYPE: |
| ((ZonedDateTime) object).writeExternal(out); |
| break; |
| case OFFSET_TIME_TYPE: |
| ((OffsetTime) object).writeExternal(out); |
| break; |
| case OFFSET_DATE_TIME_TYPE: |
| ((OffsetDateTime) object).writeExternal(out); |
| break; |
| case YEAR_TYPE: |
| ((Year) object).writeExternal(out); |
| break; |
| case YEAR_MONTH_TYPE: |
| ((YearMonth) object).writeExternal(out); |
| break; |
| case MONTH_DAY_TYPE: |
| ((MonthDay) object).writeExternal(out); |
| break; |
| case PERIOD_TYPE: |
| ((Period) 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.Duration">Duration</a> - {@code Duration.ofSeconds(seconds, nanos);} |
| * <li><a href="../../serialized-form.html#java.time.Instant">Instant</a> - {@code Instant.ofEpochSecond(seconds, nanos);} |
| * <li><a href="../../serialized-form.html#java.time.LocalDate">LocalDate</a> - {@code LocalDate.of(year, month, day);} |
| * <li><a href="../../serialized-form.html#java.time.LocalDateTime">LocalDateTime</a> - {@code LocalDateTime.of(date, time);} |
| * <li><a href="../../serialized-form.html#java.time.LocalTime">LocalTime</a> - {@code LocalTime.of(hour, minute, second, nano);} |
| * <li><a href="../../serialized-form.html#java.time.MonthDay">MonthDay</a> - {@code MonthDay.of(month, day);} |
| * <li><a href="../../serialized-form.html#java.time.OffsetTime">OffsetTime</a> - {@code OffsetTime.of(time, offset);} |
| * <li><a href="../../serialized-form.html#java.time.OffsetDateTime">OffsetDateTime</a> - {@code OffsetDateTime.of(dateTime, offset);} |
| * <li><a href="../../serialized-form.html#java.time.Period">Period</a> - {@code Period.of(years, months, days);} |
| * <li><a href="../../serialized-form.html#java.time.Year">Year</a> - {@code Year.of(year);} |
| * <li><a href="../../serialized-form.html#java.time.YearMonth">YearMonth</a> - {@code YearMonth.of(year, month);} |
| * <li><a href="../../serialized-form.html#java.time.ZonedDateTime">ZonedDateTime</a> - {@code ZonedDateTime.ofLenient(dateTime, offset, zone);} |
| * <li><a href="../../serialized-form.html#java.time.ZoneId">ZoneId</a> - {@code ZoneId.of(id);} |
| * <li><a href="../../serialized-form.html#java.time.ZoneOffset">ZoneOffset</a> - {@code (offsetByte == 127 ? ZoneOffset.ofTotalSeconds(in.readInt()) : ZoneOffset.ofTotalSeconds(offsetByte * 900));} |
| * </ul> |
| * |
| * @param in the data to read, not null |
| */ |
| 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 DURATION_TYPE: return Duration.readExternal(in); |
| case INSTANT_TYPE: return Instant.readExternal(in); |
| case LOCAL_DATE_TYPE: return LocalDate.readExternal(in); |
| case LOCAL_DATE_TIME_TYPE: return LocalDateTime.readExternal(in); |
| case LOCAL_TIME_TYPE: return LocalTime.readExternal(in); |
| case ZONE_DATE_TIME_TYPE: return ZonedDateTime.readExternal(in); |
| case ZONE_OFFSET_TYPE: return ZoneOffset.readExternal(in); |
| case ZONE_REGION_TYPE: return ZoneRegion.readExternal(in); |
| case OFFSET_TIME_TYPE: return OffsetTime.readExternal(in); |
| case OFFSET_DATE_TIME_TYPE: return OffsetDateTime.readExternal(in); |
| case YEAR_TYPE: return Year.readExternal(in); |
| case YEAR_MONTH_TYPE: return YearMonth.readExternal(in); |
| case MONTH_DAY_TYPE: return MonthDay.readExternal(in); |
| case PERIOD_TYPE: return Period.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; |
| } |
| |
| } |
