Method Flatten

cpp/src/arrow/type.cc:843–856

}

FieldVector Field::Flatten() const {
  FieldVector flattened;
  if (type_->id() == Type::STRUCT) {
    for (const auto& child : type_->fields()) {
      auto flattened_child = child->Copy();
      flattened.push_back(flattened_child);
      flattened_child->name_.insert(0, name() + ".");
      flattened_child->nullable_ |= nullable_;
    }
  } else {
    flattened.push_back(this->Copy());
  }
  return flattened;
}

std::shared_ptr<Field> Field::Copy() const {
  return ::arrow::field(name_, type_, nullable_, metadata_);