Method RightOutput

cpp/src/arrow/acero/hash_join_node_test.cc:2155–2163

      }

      std::vector<FieldRef> RightOutput(JoinType join_type) const {
        if (join_type == JoinType::LEFT_SEMI || join_type == JoinType::LEFT_ANTI) {
          return {};
        }
        std::vector<FieldRef> output(right_output.size());
        std::transform(right_output.begin(), right_output.end(), output.begin(),
                       [](int i) { return i; });
        return output;
      }

      ExecBatch Project(JoinType join_type, const ExecBatch& batch) const {
        std::vector<Datum> values;