Method Slice

cpp/src/arrow/compute/exec.cc:133–148

}

ExecBatch ExecBatch::Slice(int64_t offset, int64_t length) const {
  ExecBatch out = *this;
  for (auto& value : out.values) {
    if (value.is_scalar()) {
      // keep value as is
    } else if (value.is_array()) {
      value = value.array()->Slice(offset, length);
    } else if (value.is_chunked_array()) {
      value = value.chunked_array()->Slice(offset, length);
    } else {
      ARROW_DCHECK(false);
    }
  }
  out.length = std::min(length, this->length - offset);
  return out;
}

Result<ExecBatch> ExecBatch::SelectValues(const std::vector<int>& ids) const {
  std::vector<Datum> selected_values;