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2016-05-16 version 3.0.0-beta-3 (C++/Java/Python/Ruby/Nano/Objective-C/C#/JavaScript) |
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General |
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* Supported Proto3 lite-runtime in C++/Java for mobile platforms. |
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* Any type now supports APIs to specify prefixes other than |
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type.googleapis.com |
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* Removed javanano_use_deprecated_package option; Nano will always has its own |
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".nano" package. |
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C++ (Beta) |
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* Improved hash maps. |
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- Improved hash maps comments. In particular, please note that equal hash |
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maps will not necessarily have the same iteration order and |
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serialization. |
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- Added a new hash maps implementation that will become the default in a |
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later release. |
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* Arenas |
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- Several inlined methods in Arena were moved to out-of-line to improve |
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build performance and code size. |
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- Added SpaceAllocatedAndUsed() to report both space used and allocated |
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- Added convenient class UnsafeArenaAllocatedRepeatedPtrFieldBackInserter |
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* Any |
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- Allow custom type URL prefixes in Any packing. |
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- TextFormat now expand the Any type rather than printing bytes. |
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* Performance optimizations and various bug fixes. |
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Java (Beta) |
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* Introduced an ExperimentalApi annotation. Annotated APIs are experimental |
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and are subject to change in a backward incompatible way in future releases. |
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* Introduced zero-copy serialization as an ExperimentalApi |
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- Introduction of the `ByteOutput` interface. This is similar to |
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`OutputStream` but provides semantics for lazy writing (i.e. no |
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immediate copy required) of fields that are considered to be immutable. |
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- `ByteString` now supports writing to a `ByteOutput`, which will directly |
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expose the internals of the `ByteString` (i.e. `byte[]` or `ByteBuffer`) |
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to the `ByteOutput` without copying. |
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- `CodedOutputStream` now supports writing to a `ByteOutput`. `ByteString` |
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instances that are too large to fit in the internal buffer will be |
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(lazily) written to the `ByteOutput` directly. |
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- This allows applications using large `ByteString` fields to avoid |
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duplication of these fields entirely. Such an application can supply a |
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`ByteOutput` that chains together the chunks received from |
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`CodedOutputStream` before forwarding them onto the IO system. |
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* Other related changes to `CodedOutputStream` |
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- Additional use of `sun.misc.Unsafe` where possible to perform fast |
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access to `byte[]` and `ByteBuffer` values and avoiding unnecessary |
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range checking. |
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- `ByteBuffer`-backed `CodedOutputStream` now writes directly to the |
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`ByteBuffer` rather than to an intermediate array. |
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* Improved lite-runtime. |
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- Lite protos now implement deep equals/hashCode/toString |
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- Significantly improved the performance of Builder#mergeFrom() and |
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Builder#mergeDelimitedFrom() |
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* Various bug fixes and small feature enhancement. |
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- Fixed stack overflow when in hashCode() for infinite recursive oneofs. |
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- Fixed the lazy field parsing in lite to merge rather than overwrite. |
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- TextFormat now supports reporting line/column numbers on errors. |
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- Updated to add appropriate @Override for better compiler errors. |
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Python (Beta) |
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* Added JSON format for Any, Struct, Value and ListValue |
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* [ ] is now accepted for both repeated scalar fields and repeated message |
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fields in text format parser. |
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* Numerical field name is now supported in text format. |
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* Added DiscardUnknownFields API for python protobuf message. |
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Objective-C (Beta) |
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* Proto comments now come over as HeaderDoc comments in the generated sources |
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so Xcode can pick them up and display them. |
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* The library headers have been updated to use HeaderDoc comments so Xcode can |
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pick them up and display them. |
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* The per message and per field overhead in both generated code and runtime |
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object sizes was reduced. |
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* Generated code now include deprecated annotations when the proto file |
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included them. |
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C# (Beta) |
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In general: some changes are breaking, which require regenerating messages. |
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Most user-written code will not be impacted *except* for the renaming of enum |
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values. |
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* Allow custom type URL prefixes in `Any` packing, and ignore them when |
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unpacking |
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* `protoc` is now in a separate NuGet package (Google.Protobuf.Tools) |
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* New option: `internal_access` to generate internal classes |
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* Enum values are now PascalCased, and if there's a prefix which matches the |
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name of the enum, that is removed (so an enum `COLOR` with a value |
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`COLOR_BLUE` would generate a value of just `Blue`). An option |
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(`legacy_enum_values`) is temporarily available to disable this, but the |
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option will be removed for GA. |
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* `json_name` option is now honored |
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* If group tags are encountered when parsing, they are validated more |
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thoroughly (although we don't support actual groups) |
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* NuGet dependencies are better specified |
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* Breaking: `Preconditions` is renamed to `ProtoPreconditions` |
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* Breaking: `GeneratedCodeInfo` is renamed to `GeneratedClrTypeInfo` |
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* `JsonFormatter` now allows writing to a `TextWriter` |
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* New interface, `ICustomDiagnosticMessage` to allow more compact |
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representations from `ToString` |
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* `CodedInputStream` and `CodedOutputStream` now implement `IDisposable`, |
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which simply disposes of the streams they were constructed with |
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* Map fields no longer support null values (in line with other languages) |
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* Improvements in JSON formatting and parsing |
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Javascript (Alpha) |
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* Better support for "bytes" fields: bytes fields can be read as either a |
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base64 string or UInt8Array (in environments where TypedArray is supported). |
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* New support for CommonJS imports. This should make it easier to use the |
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JavaScript support in Node.js and tools like WebPack. See js/README.md for |
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more information. |
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* Some significant internal refactoring to simplify and modularize the code. |
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Ruby (Alpha) |
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* JSON serialization now properly uses camelCased names, with a runtime option |
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that will preserve original names from .proto files instead. |
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* Well-known types are now included in the distribution. |
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* Release now includes binary gems for Windows, Mac, and Linux instead of just |
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source gems. |
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* Bugfix for serializing oneofs. |
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C++/Java Lite (Alpha) |
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A new "lite" generator parameter was introduced in the protoc for C++ and |
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Java for Proto3 syntax messages. Example usage: |
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./protoc --cpp_out=lite:$OUTPUT_PATH foo.proto |
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The protoc will treat the current input and all the transitive dependencies |
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as LITE. The same generator parameter must be used to generate the |
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dependencies. |
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In Proto3 syntax files, "optimized_for=LITE_RUNTIME" is no longer supported. |
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2015-12-30 version 3.0.0-beta-2 (C++/Java/Python/Ruby/Nano/Objective-C/C#/JavaScript) |
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General |
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* Introduced a new language implementation: JavaScript. |
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Jisi Liu
9 years ago