Method SetMetadata

cpp/src/arrow/dataset/file_parquet.cc:831–862

}

Status ParquetFileFragment::SetMetadata(
    std::shared_ptr<parquet::FileMetaData> metadata,
    std::shared_ptr<parquet::arrow::SchemaManifest> manifest,
    std::shared_ptr<parquet::FileMetaData> original_metadata) {
  DCHECK(row_groups_.has_value());

  metadata_ = std::move(metadata);
  manifest_ = std::move(manifest);
  original_metadata_ = original_metadata ? std::move(original_metadata) : metadata_;
  // The SchemaDescriptor needs to be owned by a FileMetaData instance,
  // because SchemaManifest only stores a raw pointer (GH-39562).
  DCHECK_EQ(manifest_->descr, original_metadata_->schema())
      << "SchemaDescriptor should be owned by the original FileMetaData";

  if (!physical_schema_) {
    physical_schema_ = given_physical_schema_;
  }

  statistics_expressions_.resize(row_groups_->size(), compute::literal(true));
  statistics_expressions_complete_.resize(manifest_->descr->num_columns(), false);

  for (int row_group : *row_groups_) {
    // Ensure RowGroups are indexing valid RowGroups before augmenting.
    if (row_group < metadata_->num_row_groups()) continue;

    return Status::IndexError("ParquetFileFragment references row group ", row_group,
                              " but ", source_.path(), " only has ",
                              metadata_->num_row_groups(), " row groups");
  }

  return Status::OK();
}

Status ParquetFileFragment::ClearCachedMetadata() {
  metadata_.reset();