Method WriteKeyValueMetadata

cpp/src/arrow/integration/json_internal.cc:139–157

  }

  void WriteKeyValueMetadata(
      const std::shared_ptr<const KeyValueMetadata>& metadata,
      const std::vector<std::pair<std::string, std::string>>& additional_metadata = {}) {
    if ((metadata == nullptr || metadata->size() == 0) && additional_metadata.empty()) {
      return;
    }
    writer_->Key("metadata");

    writer_->StartArray();
    if (metadata != nullptr) {
      for (auto [key, value] : Zip(metadata->keys(), metadata->values())) {
        WriteKeyValue(key, value);
      }
    }
    for (const auto& [key, value] : additional_metadata) {
      WriteKeyValue(key, value);
    }
    writer_->EndArray();
  }

  void WriteKeyValue(const std::string& key, const std::string& value) {
    writer_->StartObject();