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Change log for 3.0 GA release.
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Jisi Liu 2016-07-27 14:40:30 -07:00 committed by GitHub
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2016-07-27 version 3.0.0 (C++/Java/Python/Ruby/Objective-C/C#/JavaScript/Lite)
General
* This log only contains changes since the beta-4 release. Summarized change
log since the last stable release (v2.6.1) can be found in the github
release page.
Compatibility Notice
* v3.0.0 is the first API stable release of the v3.x series. We do not expect
any future API breaking changes.
* For C++, Java Lite and Objective-C, source level compatibility is
guaranteed. Upgrading from v3.0.0 to newer minor version releases will be
source compatible. For example, if your code compiles against protobuf
v3.0.0, it will continue to compile after you upgrade protobuf library to
v3.1.0.
* For other languages, both source level compatibility and binary level
compatibility are guaranteed. For example, if you have a Java binary built
against protobuf v3.0.0. After switching the protobuf runtime binary to
v3.1.0, your built binary should continue to work.
* Compatibility is only guaranteed for documented API and documented
behaviors. If you are using undocumented API (e.g., use anything in the C++
internal namespace), it can be broken by minor version releases in an
undetermined manner.
Ruby
* When you assign a string field `a.string_field = "X"`, we now call
#encode(UTF-8) on the string and freeze the copy. This saves you from
needing to ensure the string is already encoded as UTF-8. It also prevents
you from mutating the string after it has been assigned (this is how we
ensure it stays valid UTF-8).
* The generated file for `foo.proto` is now `foo_pb.rb` instead of just
`foo.rb`. This makes it easier to see which imports/requires are from
protobuf generated code, and also prevents conflicts with any `foo.rb` file
you might have written directly in Ruby. It is a backward-incompatible
change: you will need to update all of your `require` statements.
* For package names like `foo_bar`, we now translate this to the Ruby module
`FooBar`. This is more idiomatic Ruby than what we used to do (`Foo_bar`).
JavaScript
* Scalar fields like numbers and boolean now return defaults instead of
`undefined` or `null` when they are unset. You can test for presence
explicitly by calling `hasFoo()`, which we now generate for scalar fields.
Java Lite
* Java Lite is now implemented as a separate plugin, maintained in the
`javalite` branch. Both lite runtime and protoc artifacts will be available
in Maven.
C#
* Target platforms now .NET 4.5, selected portable subsets and .NET Core.
* legacy_enum_values option is no longer supported.
2016-07-15 version 3.0.0-beta-4 (C++/Java/Python/Ruby/Objective-C/C#/JavaScript)
General
* Added a deterministic serialization API for C++. The deterministic