Function RunRowConversion

cpp/examples/arrow/row_wise_conversion_example.cc:175–204

}

arrow::Status RunRowConversion() {
  std::vector<data_row> original_rows = {
      {1, 1, {10.0}}, {2, 3, {11.0, 12.0, 13.0}}, {3, 2, {15.0, 25.0}}};
  std::shared_ptr<arrow::Table> table;
  std::vector<data_row> converted_rows;

  ARROW_ASSIGN_OR_RAISE(table, VectorToColumnarTable(original_rows));

  ARROW_ASSIGN_OR_RAISE(converted_rows, ColumnarTableToVector(table));

  assert(original_rows.size() == converted_rows.size());

  // Print out contents of table, should get
  // ID Components Component prices
  // 1  1          10
  // 2  3          11  12  13
  // 3  2          15  25
  std::cout << std::left << std::setw(3) << "ID " << std::left << std::setw(11)
            << "Components " << std::left << std::setw(15) << "Component prices "
            << std::endl;
  for (const auto& row : converted_rows) {
    std::cout << std::left << std::setw(3) << row.id << std::left << std::setw(11)
              << row.components;
    for (const auto& cost : row.component_cost) {
      std::cout << std::left << std::setw(4) << cost;
    }
    std::cout << std::endl;
  }
  return arrow::Status::OK();
}

int main(int argc, char** argv) {
  auto status = RunRowConversion();