Method Write

cpp/src/arrow/dataset/file_json_test.cc:131–140

  using FormatType = JsonFileFormat;

  static Result<std::shared_ptr<Buffer>> Write(RecordBatchReader* reader) {
    ARROW_ASSIGN_OR_RAISE(auto scalars, ToScalars(reader));
    std::stringstream ss;
    rj::OStreamWrapper sink(ss);
    for (const auto& scalar : scalars) {
      RETURN_NOT_OK(WriteJson(*scalar, &sink));
      ss << "\n";
    }
    return Buffer::FromString(ss.str());
  }

  static std::shared_ptr<FormatType> MakeFormat() {
    return std::make_shared<FormatType>();