Method ChildData

cpp/src/arrow/array/concatenate.cc:879–886

Gather the index-th child_data of each input into a vector. Elements are sliced with that input's offset and length.

  // Gather the index-th child_data of each input into a vector.
  // Elements are sliced with that input's offset and length.
  Result<ArrayDataVector> ChildData(size_t index) {
    ArrayDataVector child_data(in_.size());
    for (size_t i = 0; i < in_.size(); ++i) {
      ARROW_ASSIGN_OR_RAISE(child_data[i], in_[i]->child_data[index]->SliceSafe(
                                               in_[i]->offset, in_[i]->length));
    }
    return child_data;
  }

  // Gather the index-th child_data of each input into a vector.
  // Elements are sliced with that input's offset and length multiplied by multiplier.