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# Release Notes
The latest release notes will be available from the [GitHub release page](https://github.com/msgpack/msgpack-java/releases)
## 0.9.3
This version supports JDK17 [#660](http://github.com/msgpack/msgpack-java/pull/660).
Important: If you need to use DirectByteBuffer (raw memory access) in JDK17 or later, specify two JVM options to allow accessing
native memory:
```
--add-opens=java.base/java.nio=ALL-UNNAMED
--add-opens=java.base/sun.nio.ch=ALL-UNNAMED
```
Internal updates:
* Use SPDX-ID in license name [#653](http://github.com/msgpack/msgpack-java/pull/653)
* Update airframe-json, airspec to 22.6.4 [#659](http://github.com/msgpack/msgpack-java/pull/659)
* Update akka-actor to 2.6.19 [#647](http://github.com/msgpack/msgpack-java/pull/647)
## 0.9.2
Internal updates:
* Update jackson-databind to 2.13.3 [#650](http://github.com/msgpack/msgpack-java/pull/650)
* Update akka-actor to 2.6.19 [#631](http://github.com/msgpack/msgpack-java/pull/631)
* Update airframe-json, airspec to 22.6.1 [#649](http://github.com/msgpack/msgpack-java/pull/649)
* Update scalacheck to 1.16.0 [#636](http://github.com/msgpack/msgpack-java/pull/636)
* Update scala-collection-compat to 2.7.0 [#632](http://github.com/msgpack/msgpack-java/pull/632)
* Update sbt-sonatype to 3.9.13 [#644](http://github.com/msgpack/msgpack-java/pull/644)
* Update airframe-json, airspec to 22.5.0 [#643](http://github.com/msgpack/msgpack-java/pull/643)
* Update sbt to 1.6.2 [#630](http://github.com/msgpack/msgpack-java/pull/630)
## 0.9.1
Bug fixes and improvements:
- Keep consistent read size after closing MessageUnpacker (#621) @okumin
- Fixed examples relative link in README (#622) @zbuster05
- Add an ObjectMapper shorthand @cyberdelia (#620)
- Specify the bufferSize of the ArrayBufferOutput (#597) @szh
Internal updates:
- Update akka-actor to 2.6.18 (#614) @Scala Steward
- Update airframe-json, airspec to 22.2.0 (#626) @Scala Steward
- Update junit-interface to 0.13.3 (#617) @Scala Steward
- Update sbt-scalafmt to 2.4.6 (#616) @Scala Steward
- Upgrade sbt to 1.5.6 (#610) @Taro L. Saito
- Update scala-collection-compat to 2.6.0 (#604) @Scala Steward
Known issues:
- Unpack method doesn't work in JDK17 https://github.com/msgpack/msgpack-java/issues/600
## 0.9.0
This version support reading and writing [Timestamp values](https://github.com/msgpack/msgpack/blob/master/spec.md#timestamp-extension-type).
Packer and unpacker interfaces added pack/unpackTimestamp methods.
Timestamp value in MessagePack is an extension type value whose code is -1. You can read TimestampValue object with MessgageUnapcker.unpackValue method.
If you are using low-level unpack methods (e.g., unpackInt, unpackExtension, etc.),
you need to read unpackExtensionHeader first, and if extHeader.isTimestampType() is true, call unpackTimestamp(extHeader).
Timestamp values are represented with [java.time.Instant](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/time/Instant.html) objects.
You can extract the unixtime value with Instant.getEpochSecond(), unixtime with milliseconds resolution with Instant.toEpochMilli(), and nano-resolution time with Instant.getNano().
As TimestampValue is just a sub class of ExtensionValue, no change requierd in your code that are traversing MessagePack data with MessageUnpacker.unpackValue method.
* Added Timestamp support [#565](http://github.com/msgpack/msgpack-java/pull/565) and low-level APIs [#580](https://github.com/msgpack/msgpack-java/pull/580) for
reading timestamp values.
Dependency updates:
* Update jackson-databind to 2.10.5.1 [#559](http://github.com/msgpack/msgpack-java/pull/559)
Internal updates:
* Update akka-actor to 2.6.14 [#579](http://github.com/msgpack/msgpack-java/pull/579)
* Fix for Scala 2.13 syntax [#577](http://github.com/msgpack/msgpack-java/pull/577)
* Update airframe-json, airspec to 21.6.0 [#576](http://github.com/msgpack/msgpack-java/pull/576)
* Update scala-library to 2.13.6 [#568](http://github.com/msgpack/msgpack-java/pull/568)
* Update sbt to 1.5.3 [#575](http://github.com/msgpack/msgpack-java/pull/575)
## 0.8.24
* Rebuild with JDK8 for Android compatibility [#567](https://github.com/msgpack/msgpack-java/pull/567)
## 0.8.23
* Produce stable map values [#548](https://github.com/msgpack/msgpack-java/pull/548)
* Fixes #544: Fix a bug in reading EXT32 of 2GB size [#545](https://github.com/msgpack/msgpack-java/pull/545)
* Add a warning note for the usage of MessageUnpacker.readPayloadAsReference [#546](https://github.com/msgpack/msgpack-java/pull/546)
Intenral changes:
* Add a script for releasing a new version of msgpack-java at CI
* Publish a snapshot version for every main branch commit [#556](https://github.com/msgpack/msgpack-java/pull/556)
* Use dynamic versioning with Git tags v0.x.y format [#555](https://github.com/msgpack/msgpack-java/pull/555)
* Update ScalaTest and ScalaCheck versions [#554](https://github.com/msgpack/msgpack-java/pull/554)
* Remove findbugs [#553](https://github.com/msgpack/msgpack-java/pull/553)
* Update build settings to use latest version of sbt and plugins [#552](https://github.com/msgpack/msgpack-java/pull/552)
* Run GitHub Actions for develop and main branches [#551](https://github.com/msgpack/msgpack-java/pull/551)
* Remove Travis build [#550](https://github.com/msgpack/msgpack-java/pull/550)
## 0.8.22
* Support extension type key in Map [#535](https://github.com/msgpack/msgpack-java/pull/535)
* Remove addTargetClass() and addTargetTypeReference() from ExtensionTypeCustomDeserializers [#539](https://github.com/msgpack/msgpack-java/pull/539)
* Fix a bug BigDecimal serializaion fails [#540](https://github.com/msgpack/msgpack-java/pull/540)
## 0.8.21
* Fix indexing bug in ValueFactory [#525](https://github.com/msgpack/msgpack-java/pull/525)
* Support numeric types in MessagePackParser.getText() [#527](https://github.com/msgpack/msgpack-java/pull/527)
* Use jackson-databind 2.10.5 for security vulnerability [#528](https://github.com/msgpack/msgpack-java/pull/528)
* (internal) Ensure building msgpack-java for Java 7 target [#523](https://github.com/msgpack/msgpack-java/pull/523)
## 0.8.20
* Rebuild 0.8.19 with JDK8
## 0.8.19
* Support JDK11
* msgpack-jackson: Fixes [#515](https://github.com/msgpack/msgpack-java/pull/515)
## 0.8.18
* (internal) Update sbt related dependencies [#507](https://github.com/msgpack/msgpack-java/pull/507)
* Use jackson-databind 2.9.9.3 for security vulnerability [#511](https://github.com/msgpack/msgpack-java/pull/511)
## 0.8.17
* Fix OOM exception for invalid msgpack messages [#500](https://github.com/msgpack/msgpack-java/pull/500)
* Use jackson-databind 2.9.9 for security vulnerability [#505](https://github.com/msgpack/msgpack-java/pull/505)
## 0.8.16
* Fix NPE at ObjectMapper#copy with MessagePackFactory when ExtensionTypeCustomDeserializers isn't set [#471](https://github.com/msgpack/msgpack-java/pull/471)
## 0.8.15
* Suppress a warning in ValueFactory [#457](https://github.com/msgpack/msgpack-java/pull/457)
* Add MessagePacker#clear() method to clear position [#459](https://github.com/msgpack/msgpack-java/pull/459)
* Support ObjectMapper#copy with MessagePackFactory [#454](https://github.com/msgpack/msgpack-java/pull/454)
* Use jackson-databind 2.8.11.1 for security vulnerability [#467](https://github.com/msgpack/msgpack-java/pull/467)
* (internal) Remove "-target:jvm-1.7" from scalacOptions [#456](https://github.com/msgpack/msgpack-java/pull/456)
* (internal) Replace sbt `test-only` command with `testOnly` [#445](https://github.com/msgpack/msgpack-java/pull/445)
* (internal) Use JavaConverters instead of JavaConversions in unit tests [#446](https://github.com/msgpack/msgpack-java/pull/446)
## 0.8.14
* Add MessageUnpacker.tryUnpackNil() for peeking whether the next value is nil or not.
* Add MessageBufferPacker.getBufferSize().
* Improved MessageUnpacker.readPayload performance [#436](https://github.com/msgpack/msgpack-java/pull/436)
* Fixed a bug that ChannelBufferInput#next blocks until the buffer is filled. [#428](https://github.com/msgpack/msgpack-java/pull/428)
* (internal) Upgraded to sbt-1.0.4 for better Java9 support
* (internal) Dropped Java7 tests on TravisCI, but msgpack-java is still built for Java7 (1.7) target
## 0.8.13
* Fix ambiguous overload in Java 9 [#415](https://github.com/msgpack/msgpack-java/pull/415)
* Make MessagePackParser accept a string as a byte array field [#420](https://github.com/msgpack/msgpack-java/pull/420)
* Support MessagePackGenerator#writeNumber(String) [#422](https://github.com/msgpack/msgpack-java/pull/422)
## 0.8.12
* Fix warnings in build.sbt [#402](https://github.com/msgpack/msgpack-java/pull/402)
* Add ExtensionTypeCustomDeserializers and MessagePackFactory#setExtTypeCustomDesers [#408](https://github.com/msgpack/msgpack-java/pull/408)
* Avoid a CharsetEncoder bug of Android 4.x at MessagePacker#packString [#409](https://github.com/msgpack/msgpack-java/pull/409)
## 0.8.11
* Fixed NPE when write(add)Payload are used at the beginning [#392](https://github.com/msgpack/msgpack-java/pull/392)
## 0.8.10
* Fixed a bug of unpackString [#387](https://github.com/msgpack/msgpack-java/pull/387) at the buffer boundary
## 0.8.9
* Add DirectByteBuffer support
* Add Flushable interface to MessagePacker
## 0.8.8
* [Fix Unexpected UTF-8 encoder state](https://github.com/msgpack/msgpack-java/issues/371)
* Make MessageUnpacker.hasNext extensible
* Added skipValue(n)
* [msgpack-jackson] Ignoring uknown propertiers when deserializing msgpack data in array format
## 0.8.7
* Fixed a problem when reading malformed UTF-8 characters in packString. This problem happens only if you are using an older version of Java (e.g., Java 6 or 7)
* Support complex-type keys in msgpack-jackson
## 0.8.6
* Fixed a bug that causes IndexOutOfBoundsException when reading a variable length code at the buffer boundary.
## 0.8.5
* Add PackerConfig.withStr8FormatSupport (default: true) for backward compatibility with earier versions of msgpack v0.6, which doesn't have STR8 type.
* msgpack-jackson now supports `@JsonFormat(shape=JsonFormat.Shape.ARRAY)` to serialize POJOs in an array format. See also https://github.com/msgpack/msgpack-java/tree/develop/msgpack-jackson#serialization-format
* Small performance optimization of packString when the String size is larger than 512 bytes.
## 0.8.4
* Embed bundle parameters for OSGi
## 0.8.3
* Fix a bug (#348), which wrongly overwrites the buffer before reading numeric data at the buffer boundary
## 0.8.2
* Add some missing asXXX methods in Value
* ValueFactory.MapBuilder now preserves the original element order (by using LinkedHashMap)
* Fix ExtensionType property
## 0.8.1
* MessagePack.Packer/UnpackerConfig are now immuable and configurable with withXXX methods.
* Add bufferSize configuration parameter
* Allow setting null to ArrayBufferInput for advanced applications that require dedicated memory management.
* Fix MessageBufferPacker.toXXX to properly flush the output
* Modify ValueFactory methods to produce a copy of the input data. To omit the copy, use `omitCopy` flag.
* Improve the performance of MessagePackParser by unpacking data without using org.msgpack.value.Value.
## 0.8.0
* Split MessagePack.Config into MessagePack.Packer/UnpackerConfig
* Changed MessageBuffer API
* It allows releasing the previously allocated buffers upon MessageBufferInput.next() call.
* MessageBufferOutput now can read data from external byte arrays
* MessagePacker supports addPayload(byte[]) to feed the data from an external data source
* This saves the cost of copying large data to the internal message buffer
* Performance improvement of packString
* Add MessageBufferPacker for efficiently generating byte array(s) of message packed data
## 0.7.1
* Fix ImmutableLongValueImpl#asShort [#287](https://github.com/msgpack/msgpack-java/pull/287)
## 0.7.0
* Support non-string key in jackson-dataformat-msgpack
* Update the version of jackson-databind to 2.6.3
* Several bug fixes
## 0.7.0-M6
* Add a prototype of Value implementation
* Apply strict coding style
* Several bug fixes
## 0.7.0-p9
* Fix [#217](https://github.com/msgpack/msgpack-java/issues/217) when reading from SockectInputStream
## 0.7.0-p8
* Support Extension type (defined in MessagePack) in msgpack-jackson
* Support BigDecimal type (defined in Jackson) in msgpack-jackson
* Fix MessageUnpacker#unpackString [#215](https://github.com/msgpack/msgpack-java/pull/215), [#216](https://github.com/msgpack/msgpack-java/pull/216)
## 0.7.0-p7
* Google App Engine (GAE) support
## 0.7.0-p6
* Add MessagePacker.getTotalWrittenBytes()
## 0.7.0-p5
* Fix skipValue [#185](https://github.com/msgpack/msgpack-java/pull/185)
## 0.7.0-p4
* Supporting some java6 platform and Android
|
