News
Ion JS 4.2.0 and 4.2.1 Released
06 May 2021
API Changes:
- Added position() API to Reader.
- Added an equals() API for the DOM.
- Timestamp’s constructor can now accept a Date instead of requiring individual time unit fields.
- Reader.byteValue is now deprecated in favor of the new alias: Reader.uInt8ArrayValue, which is more descriptive.
- Added support for duplicate fields in Struct for the DOM.
Bug Fixes:
- Fix length calculation for annotated containers.
- Change how container type information is stored on the stepIn stack.
- Fixed bug in the text parser that allowed unclosed structs at the end of a stream.
- Fixes the elements() method for Struct to preserve 4.1.0 behavior. (Fixed with v4.2.1)
Tweaks:
- Generate the ES6 module correctly.
- Performance improvements in unicode decoding.
- Use number instead of BigInt for smaller values. (Performance optimization)
| Release Notes v4.2.0 | Release Notes v4.2.1 | Ion JS |
Ion Java 1.8.1 Released
07 April 2021
New features:
- Added an option to configure whether top level values should be delimited by newlines.
- Added an option to configure what line separator (eg. LF, CR+LF, etc) should be used.
Bug fixes:
- Unknown SIDs larger than INT_MAX now throw an IonException instead of a NumberFormatException.
| Release Notes v1.8.1 | Ion Java |
Ion C 1.4.0 Released
09 February 2021
New features:
- Added support for writing 32-bit floats via existing APIs.
Bug fixes:
- Fixed long strings concatenation failures when components were separated by comments.
- Correctly interpret newline characters within text clob literals.
- Allowed text writer to write timestamps with high-precision fractional seconds.
- Fixed ion_timestamp_to_time_t on Windows.
- Changed globals to use thread-local storage (TLS).
- Fixed an issue causing lobs to skip some bytes when doing partial reads of ion-text.
- Fail early when a numeric value is terminated by an invalid character.
- Made ion_reader_get_type behavior consistent between text and binary writers.
- Fixed an infinite loop that occurred when writing to a fixed-size buffer with insufficient space.
- Fixed integer overflow bugs in
ion_int_from_longandion_int_to_int64.
Tweaks:
- Removed the CLI’s dependency on docopt in favor of argtable3.
- Added a space after a field name’s colon when pretty-printing.
- Added static build targets.
- Removed
googletestfrom all target. - Various CLI fixes and improvements.
- Integrated ion-test-driver support into GitHub Actions.
| Release Notes v1.4.0 | Ion C |
Ion Go 1.1.0 Released
08 December 2020
New features:
- #165: Adds support for writing
SymbolTokens - #171: Adds support for marshalling
Timevalues without first creating an intermediateion.Timestamp
| Release Notes v1.1.0 | Ion Go |
Ion Python 0.7.0 Released
02 December 2020
Bug fix:
- Uses localcontext support decimals of any precision.
New API:
- Adds IonToJSONEncoder to allow Ion data to be down-converted to JSON.
| Release Notes |
Ion JS 4.1.0 Released
02 December 2020
API Changes:
- Added deleteField method for deleting Struct fields.
Bug Fixes:
- Shared symbol tables no longer treat Object properties as symbols.
- Local symbol tables no longer use Objects with default properties to index symbols.
- Local symbol tables no longer discard duplicate symbols during initialization.
Tweaks:
- Improved performance when reading binary UInt subfields.
Testing improvements:
- Migrated from Travis CI to Github Actions.
- Integrated with ion-test-driver.
| Release Notes | Ion JS |
Ion .NET 1.1.0 Released
23 November 2020
This release includes:
- Replacing the usage of decimal#TryParse(String, Decimal) with decimal#TryParse(String, NumberStyles, IFormatProvider, Decimal), allowing us to use InvariantCulture instead of the current thread’s configured culture. (#129)
- Adding a JSON text writer. (#130)
- Moving to GitHub Actions for CI build. (#124)
The Amazon.IonDotnet package is available via NuGet.
| Release Notes | Ion .NET |
Ion Java 1.8.0 Released
09 November 2020
This release includes:
- A bug fix in IonReaderBinaryRawX.readBytes (#318).
- Avoiding repetitive reallocation of PooledBlockAllocatorProvider in _PrivateIon_HashTrampoline.
| Release Notes | Ion Java |
Ion Hash Go 1.0 Released
30 September 2020
This release provides full support for hashing all Ion values.
The package is available via GitHub.
| Release Notes | Ion Go |
Ion Go 1.0 Released
29 September 2020
This first release for Go provides full support for the Ion type system and includes reader and writer APIs.
The package is available via GitHub.
| Release Notes | Ion Go |
Ion Schema Kotlin 1.1 Released
14 July 2020
This release provides access to the ISL underlying Schema and Type objects, enables custom schema caching logic, provides graceful handling of redundant imports, and more.
| Release Notes | Ion Schema Kotlin |
Ion Hash .NET 1.0 Released
04 June 2020
This release provides full support for hashing all Ion values.
The Amazon.IonHashDotnet package is available via NuGet.
| Release Notes | Ion Hash .NET |
Ion .NET 1.0 Released
03 June 2020
This first release for the .NET platform provides full support for the Ion type system and includes both reader/writer and DOM APIs.
The Amazon.IonDotnet package is available via NuGet.
| Release Notes | Ion .NET |
Ion Hash JS 2.0 Released
31 March 2020
This release introduces a simple API for calculating an Ion hash of any value, including native JavaScript types as well as instances of ion-js 4.0’s dom.Value class.
| Release Notes | Ion Hash JS |
Ion JS 4.0 Released
30 March 2020
In addition to various bug fixes and improvements, this release:
- introduces a new DOM-style API which allows you to work with Ion values as JavaScript objects
- supports down-converting Ion to JSON via the native
JSON.stringify()function
| Release Notes | Ion JS |
Draft RFC for Ion Templates
09 March 2020
An RFC was published to the Ion specification GitHub repository proposing a new feature for an upcoming minor release: templates. Questions, comments, and suggestions are welcome and should be added to the ‘Conversation’ tab of the pull request.
| Ion Templates Draft RFC |
Ion Java 1.6.0 Released
26 February 2020
This release includes:
- Opt-in support for local symbol table appends, which allow strings to be dynamically added to the symbol table. In many cases, this produces a more compact encoding and requires less in-memory buffering. To take advantage of this, use the withLocalSymbolTableAppendEnabled() method on the IonBinaryWriterBuilder.
- Optimizations for reading and writing binary strings.
- A fix for a bug that could cause an infinite loop when an IonValue was modified while simultaneously being read with a TreeReader.
| Release Notes | Ion Java |
software.amazon.ion is Deprecated
15 January 2020
As of today the software.amazon.ion group id is deprecated in favor of com.amazon.ion and no new software will be released in maven using software.amazon.ion.
Users are encouraged to migrate as soon as possible. The only changes are in the package names so they conform to the corresponding group ids.
Ion Hash JS 1.0.2 Released
05 November 2019
This release is a complete implementation of the Ion Hash Specification for JavaScript, and provides hashing decorators of ion-js’s Reader and Writer interfaces.
This package is available via NPM.
| Ion Hash JS |
Ion JS 3.1.0 Released
29 October 2019
In addition to numerous bug fixes, this release adds support for arbitrary precision integers, decimals, and timestamps. It does not include support for:
- ints denoted in binary
- underscore characters in ints, decimals, or floats
- shared symbol tables
- symboltokens
- SID0 ($0)
Note: this release targets Node environments only and has not been verified to work in any browsers
| Release Notes |
Ion Python 0.5.0 Released
17 October 2019
- Adds option to omit the Ion version marker from text output.
- Adds option to write tuples as Ion s-expressions via simpleion dump/dumps.
- Adds support for timestamps with arbitrary precision.
| Release Notes |
Ion JS 3.0.0 Released
13 September 2019
This release includes many changes to the ion-js API, many of them are not backwards-compatible. See the release notes for more information.
The following are known limitations:
- int values are restricted to 32 bits: [-2147483648, 2147483647]
- character escape sequences are not fully supported in strings, symbols, and clobs
- no support for:
- ints denoted in binary
- underscore characters in ints, decimals, or floats
- shared symbol tables
- symboltokens
- SID0 ($0)
Note: this release targets Node environments only and has not been verified to work in any browsers
| Release Notes |
Ion Python 0.4.1 Released
06 September 2019
- Remove memoization of events in _IonNature.
- Updates Tox/README Python Versions
- Adds support for tuple in _FROM_TYPES mapping.
- Sets Travis CI dist to Xenial and removes 2.6/2.7
| Release Notes |
Ion Hash Python 1.0.1 Released
16 July 2019
This release is a complete implementation of the Ion Hash Specification. In addition to low-level hash_reader/hash_writer APIs, it adds an ion_hash() method to all ion-python simpleion objects.
This package is available at PyPI.
| Ion Hash Python |
Ion Schema Kotlin 1.0.0 Released
15 July 2019
This release is a complete implementation of the Ion Schema Specification.
| Release Notes |
Ion Java 1.5.0 Released
26 June 2019
From version 1.4.0 forward ion-java moved to a new maven group id and java package name: com.amazon.ion. This move was necessary to keep the publishing of Amazon libraries in maven consistent.
We’ll keep supporting software.amazon.ion by publishing mirrored releases but users are strongly encouraged to migrate. The migration is trivial, the only differences are the maven group id and Java package names.
1.5.0 release notes:
- Fixed a bug in IonReader.getTypeAnnotations when used with text data that contains a symbol table.
- Made the messages of certain IllegalStateExceptions more descriptive.
- Added an Equivalence option to specify an epsilon to use when comparing Ion float values.
- Reduced memory allocations and garbage collections required when stepping in and out of containers in the binary writer, resulting in a speedup (5%), heap size reduction (4%), GC count reduction (56%), GC time reduction (13%), and Eden Space churn reduction (71%) when writing a sample of container-heavy test data.
- Reduced memory allocations and garbage collections required when setting struct field names in the binary writer, resulting in a speedup (12.6%), reduction in heap usage (17%), and elimination of garbage collections when writing a sample of field-heavy test data.
- Cached the reference to the current container context in the binary writer to reduce repetitive List lookups, resulting in a speedup (10%) when writing a sample of container-heavy test data.
| Release Notes |
Ion Hash Specification 1.0 Released
23 May 2019
This new specification defines a hash algorithm for Ion values, independent of whether a value is encoded in text or binary. It is useful when determining whether two Ion values represent the same value, or determining whether an Ion value has changed. For example, a storage system might use Ion hashes to assert the integrity of its data.
Additionally, a reference implementation of Ion Hash written in Java is available as open source software.
| Ion Hash Specification | Reference Implementation |
Ion Java 1.4.0 Released
24 April 2019
From version 1.4.0 forward ion-java has moved to a new maven group id and java package name: com.amazon.ion. This move was necessary to keep the publishing of Amazon libraries in maven consistent.
We’ll keep supporting software.amazon.ion by publishing mirrored releases but users are strongly encouraged to migrate. The migration is trivial, the only differences are the maven group id and Java package names.
1.4.0 release notes:
- First release using
com.amazon.ionas the java package name and groupId - Fixed a gzipped related memory leak
- Performance fix for IonValueLite.clearSymbolIdValues()
| Release Notes |
Ion Hive SerDe 0.1.0 Released
21 January 2019
Apache Hive SerDe (short for serializer/deserializer) for the Ion file format alpha is released.
This new Serializer/Deserializer for Apache Hive supports the Ion binary and text formats, all of the Ion types, and flattening through path extraction. This release is an Alpha release and a complete list of features can be found in the GitHub repository.
| GitHub Repository |
Ion Java Path Extraction 1.0.0 Released
12 November 2018
Ion Path Extraction API aims to combine the convenience of a DOM API with the speed of a streaming API.
The user can register search paths and callbacks with the extractor that will read the Ion document in the most efficient way looking for the registered paths. When it matches a search path it will invoke the correspondent callback.
| GitHub Repository |
Ion Schema Specification 1.0 Released
05 November 2018
This new specification describes a language and set of constraints used to declaratively constrain Ion values. Types defined by a schema could be used to:
- assert that a value meets specific expectations,
- generate developer-friendly APIs for working with data,
- enable efficient analysis over data that conforms to a type,
- and more!
A reference implementation of Ion Schema is now available as open source software. It is written in Kotlin, and should be considered alpha software.
| Ion Schema Specification | Reference Implementation |
Amazon Redshift Spectrum Adds Nested Ion Support
09 August 2018
You can now use Amazon Redshift to directly query nested data in Apache Parquet, Apache ORC, JSON and Amazon Ion file formats stored in external tables in Amazon S3.
Nested data support with Redshift Spectrum enables you to query complex data types such as struct, array, or map, without having to transform or load your data.
| AWS Announcement |
Developers’ Guide to Ion Symbols Released
06 August 2018
This document provides developer-focused commentary on the Symbols section of the specification and discusses the implementation of symbol table, symbol token, and catalog APIs.
| Symbols Developer Guide |
Ion Java 1.2.0 Released
22 June 2018
- Decouples IonReader from IonSystem and adds IonReaderBuilder.
- Adds Automatic-Module-Name in manifest so Java9 modular applications can depend on this library.
| Release Notes |
Ion C 1.0.1 Released
26 May 2018
Bug fixes:
- Fixed an issue that caused release builds to fail during linking.
| Release Notes |
Ion Python 0.3.1 Released
16 May 2018
Adds support for binary and text in simpleion.loads() and simpleion.dumps().
| Release Notes |
Ion C 1.0.0 Released
13 April 2018
Highlighted features:
- Streaming readers and writers for both binary and text Ion.
- CLI tool for processing and comparing Ion streams.
- Test suite backed by ion-tests.
Limitations:
- No UTF-16 or UTF-32 support.
- Binary Ion streams may not exceed 232 distinct symbols.
| Release Notes |
Amazon Releases ion-test-driver
13 April 2018
A cross-implementation test driver for Amazon Ion readers and writers.
| GitHub Repository |
Ion Java 1.1.2 Released
02 April 2018
Javadoc changes.
| Release Notes |
Ion Java 1.1.1 Released
23 March 2018
Fixes IonStruct.clone performance regression introduced in v1.1.0.
| Release Notes |
Amazon Redshift Spectrum Adds Scalar Ion Support
08 March 2018
You can now use Amazon Redshift Spectrum to directly query scalar JSON and Ion data types stored in external tables in Amazon S3 - without loading or transforming the data.
| AWS Announcement |
Ion Java 1.1.0 Released
24 January 2018
Adds support for empty symbols, local symbol append, SID0, NOP padding, and more improvements.
| Release Notes |
Ion Java 1.0.3 Released
13 October 2017
Avoid writing fractional second if not necessary in Timestamp binary encoding.
| Release Notes |
Jackson Adds Ion Support
30 July 2017
First official version of jackson-dataformat-ion (under jackson-dataformats-binary repo) — used for reading/writing Amazon Ion format documents.
| Medium Announcement | Release Notes |
Amazon Releases ion-eclipse-plugin
21 July 2017
An Eclipse plugin for working with files using the Amazon Ion data format.
| GitHub Repository | Getting Started |
Ion Python 0.2.0 Released
10 May 2017
Adds support for reading text Ion and fixes bug affecting writes of large binary Ion values.
| Release Notes |
Amazon Releases ion-js
25 April 2017
Ion-JS is a JavaScript library for Ion – this is currently alpha software and is subject to change. The library allows for reading/writing Ion data from within JavaScript code.
| GitHub Repository | API Documentation |
Ion Java 1.0.2 Released
08 February 2017
Provides OSGi metadata. Fixes a few small bugs.
| Release Notes |
Ion Java 1.0.1 Released
29 September 2016
Ability to read and write 32-bit floats, and to query integer sizes (short, int, long, etc.) for more efficient materialization (no need to always start with BigInteger).
| Release Notes |
Amazon Releases ion-python
09 July 2016
A python implementation of Amazon Ion designed to work with Python 2.6+ and Python 3.3+.
| GitHub Repository |
Amazon Releases ion-c
27 June 2016
Ion-C is a C library for Ion.
| GitHub Repository |
Amazon Releases ion-intellij-plugin
14 June 2016
An IntelliJ plugin for working with files using the Amazon Ion data format.
| GitHub Repository | IntelliJ Plugins |
Ion Java 1.0.0 Released
25 April 2016
This is the initial open source release of Ion Java.
| Release Notes | Maven Central | Javadoc |
Amazon Open Sources Ion
21 April 2016
Amazon released the specification for Ion.
| Ion Specification |