Function UniqueFinalize

cpp/src/arrow/compute/kernels/vector_hash.cc:611–617

}

Status UniqueFinalize(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));
  *out = {Datum(uniques)};
  return Status::OK();
}

Status DictEncodeFinalize(KernelContext* ctx, std::vector<Datum>* out) {
  auto hash_impl = checked_cast<HashKernel*>(ctx->state());