Method operator()

cpp/src/arrow/acero/sorted_merge_node.cc:241–253

struct InputStateComparator {
  bool operator()(const std::shared_ptr<InputState>& lhs,
                  const std::shared_ptr<InputState>& rhs) const {
    // True if lhs is ahead of time of rhs
    if (lhs->Finished()) {
      return false;
    }
    if (rhs->Finished()) {
      return false;
    }
    time_unit_t lFirst = lhs->GetLatestTime();
    time_unit_t rFirst = rhs->GetLatestTime();
    return lFirst > rFirst;
  }
};

class SortedMergeNode : public ExecNode {