Method GetColumn

cpp/src/parquet/arrow/reader.cc:1239–1252

}

Status FileReaderImpl::GetColumn(int i, FileColumnIteratorFactory iterator_factory,
                                 std::unique_ptr<ColumnReader>* out) {
  RETURN_NOT_OK(BoundsCheckColumn(i));
  auto ctx = std::make_shared<ReaderContext>();
  ctx->reader = reader_.get();
  ctx->pool = pool_;
  ctx->iterator_factory = iterator_factory;
  ctx->filter_leaves = false;
  ctx->reader_properties = &reader_properties_;
  std::unique_ptr<ColumnReaderImpl> result;
  RETURN_NOT_OK(GetReader(manifest_.schema_fields[i], ctx, &result));
  *out = std::move(result);
  return Status::OK();
}

Result<std::shared_ptr<Table>> FileReaderImpl::ReadRowGroups(
    const std::vector<int>& row_groups, const std::vector<int>& column_indices) {