Method GetColumnPageReader

cpp/src/parquet/file_reader.cc:159–167

}

std::unique_ptr<PageReader> RowGroupReader::GetColumnPageReader(int i) {
  if (i >= metadata()->num_columns()) {
    std::stringstream ss;
    ss << "Trying to read column index " << i << " but row group metadata has only "
       << metadata()->num_columns() << " columns";
    throw ParquetException(ss.str());
  }
  return contents_->GetColumnPageReader(i);
}

// Returns the rowgroup metadata
const RowGroupMetaData* RowGroupReader::metadata() const { return contents_->metadata(); }