Method DispatchBest

cpp/src/arrow/compute/kernels/scalar_compare.cc:343–365

  using ScalarFunction::ScalarFunction;

  Result<const Kernel*> DispatchBest(std::vector<TypeHolder>* types) const override {
    RETURN_NOT_OK(CheckArity(types->size()));
    if (HasDecimal(*types)) {
      RETURN_NOT_OK(CastBinaryDecimalArgs(DecimalPromotion::kAdd, types));
    }

    using arrow::compute::detail::DispatchExactImpl;
    if (auto kernel = DispatchExactImpl(this, *types)) return kernel;

    EnsureDictionaryDecoded(types);
    ReplaceNullWithOtherType(types);

    if (auto type = CommonNumeric(*types)) {
      ReplaceTypes(type, types);
    } else if (auto type = CommonTemporal(types->data(), types->size())) {
      ReplaceTypes(type, types);
    } else if (auto type = CommonBinary(types->data(), types->size())) {
      ReplaceTypes(type, types);
    }

    if (auto kernel = DispatchExactImpl(this, *types)) return kernel;
    return arrow::compute::detail::NoMatchingKernel(this, *types);
  }
};

struct VarArgsCompareFunction : ScalarFunction {