Method get

cpp/src/arrow/acero/schema_util.h:49–53

  const int* source_to_base;
  const int* base_to_target;
  inline int get(int i) const {
    assert(i >= 0 && i < num_cols);
    assert(source_to_base[i] != kMissingField);
    return base_to_target[source_to_base[i]];
  }
};

/// Helper class for managing different projections of the same row schema.