Function WriteColumnV1

cpp/src/arrow/ipc/feather.cc:636–669

}

Status WriteColumnV1(const ChunkedArray& values, io::OutputStream* dst,
                     ColumnMetadata* out) {
  if (values.num_chunks() > 1) {
    return Status::Invalid("Writing chunked arrays not supported in Feather V1");
  }
  const Array& chunk = *values.chunk(0);
  RETURN_NOT_OK(WriteArrayV1(chunk, dst, &out->values));
  switch (chunk.type_id()) {
    case Type::DICTIONARY: {
      out->meta_type = ColumnType::CATEGORY;
      auto dictionary = checked_cast<const DictionaryArray&>(chunk).dictionary();
      RETURN_NOT_OK(WriteArrayV1(*dictionary, dst, &out->category_levels));
      out->category_ordered =
          checked_cast<const DictionaryType&>(*chunk.type()).ordered();
    } break;
    case Type::DATE32:
      out->meta_type = ColumnType::DATE;
      break;
    case Type::TIME32: {
      out->meta_type = ColumnType::TIME;
      out->temporal_unit = checked_cast<const Time32Type&>(*chunk.type()).unit();
    } break;
    case Type::TIMESTAMP: {
      const auto& ts_type = checked_cast<const TimestampType&>(*chunk.type());
      out->meta_type = ColumnType::TIMESTAMP;
      out->temporal_unit = ts_type.unit();
      out->timezone = ts_type.timezone();
    } break;
    default:
      out->meta_type = ColumnType::PRIMITIVE;
      break;
  }
  return Status::OK();
}

Status WriteFeatherV1(const Table& table, io::OutputStream* dst) {
  // Preamble