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Protocol Buffers v3.9.0 Release Notes

Release Date: 2019-07-12 // almost 5 years ago

  • C++

    • ⚡️ Optimize and simplify implementation of RepeatedPtrFieldBase
    • Don't create unnecessary unknown field sets.
    • ✂ Remove branch from accessors to repeated field element array.
    • ➕ Added delimited parse and serialize util.
    • ⬇️ Reduce size by not emitting constants for fieldnumbers
    • 🛠 Fix a bug when comparing finite and infinite field values with explicit tolerances.
    • 📜 TextFormat::Parser should use a custom Finder to look up extensions by number if one is provided.
    • ➕ Add MessageLite::Utf8DebugString() to make MessageLite more compatible with Message.
    • 🐎 Fail fast for better performance in DescriptorPool::FindExtensionByNumber() if descriptor has no defined extensions.
    • ➕ Adding the file name to help debug colliding extensions
    • ➕ Added FieldDescriptor::PrintableNameForExtension() and DescriptorPool::FindExtensionByPrintableName().
      The latter will replace Reflection::FindKnownExtensionByName().
    • Replace NULL with nullptr
    • Created a new Add method in repeated field that allows adding a range of elements all at once.
    • Enabled enum name-to-value mapping functions for C++ lite
    • Avoid dynamic initialization in descriptor.proto generated code
    • 🚚 Move stream functions to MessageLite from Message.
    • Move all zero_copy_stream functionality to io_lite.
    • Do not create array of matched fields for simple repeated fields
    • 0️⃣ Enabling silent mode by default to reduce make compilation noise. (#6237)

    Java

    • 🔦 Expose TextFormat.Printer and make it configurable. Deprecate the static methods.
    • Library for constructing google.protobuf.Struct and google.protobuf.Value
    • 👉 Make OneofDescriptor extend GenericDescriptor.
    • 🔦 Expose streamingness of service methods from MethodDescriptor.
    • 🛠 Fix a bug where TextFormat fails to parse Any filed with > 1 embedded message sub-fields.
    • Establish consistent JsonFormat behavior for nulls in oneofs, regardless of order.
    • ⚡️ Update GSON version to 3.8.5. (#6268)
    • Add protobuf_java_lite Bazel target. (#6177)

    Python

    • 🔄 Change implementation of Name() for enums that allow aliases in proto2 in Python
      to be in line with claims in C++ implementation (to return first value).
    • Explicitly say what field cannot be set when the new value fails a type check.
    • 🚩 Duplicate register in descriptor pool will raise errors
    • Add slots to all well_known_types classes, custom attributes are not allowed anymore.
    • 0️⃣ text_format only present 8 valid digits for float fields by default

    JavaScript

    • ➕ Add Oneof enum to the list of goog.provide

    PHP

    • 📇 Rename get/setXXXValue to get/setXXXWrapper. (#6295)

    💎 Ruby

    • ✂ Remove to_hash methods. (#6166)