Function DictEncodeFinalize

cpp/src/arrow/compute/kernels/vector_hash.cc:618–629

}

Status DictEncodeFinalize(KernelContext* ctx, std::vector<Datum>* out) {
  auto hash_impl = checked_cast<HashKernel*>(ctx->state());
  std::shared_ptr<ArrayData> uniques;
  RETURN_NOT_OK(hash_impl->GetDictionary(&uniques));
  auto dict_type = dictionary(int32(), uniques->type);
  auto dict = MakeArray(uniques);
  for (size_t i = 0; i < out->size(); ++i) {
    (*out)[i] =
        std::make_shared<DictionaryArray>(dict_type, (*out)[i].make_array(), dict);
  }
  return Status::OK();
}

std::shared_ptr<ArrayData> BoxValueCounts(const std::shared_ptr<ArrayData>& uniques,
                                          const std::shared_ptr<ArrayData>& counts) {