Function FieldIdMetadata

cpp/src/parquet/arrow/schema.cc:284–290

static constexpr char FIELD_ID_KEY[] = "PARQUET:field_id";

std::shared_ptr<::arrow::KeyValueMetadata> FieldIdMetadata(int field_id) {
  if (field_id >= 0) {
    return ::arrow::key_value_metadata({FIELD_ID_KEY}, {ToChars(field_id)});
  } else {
    return nullptr;
  }
}

int FieldIdFromMetadata(
    const std::shared_ptr<const ::arrow::KeyValueMetadata>& metadata) {