Method StorageFileCluster

src/Storages/StorageFileCluster.cpp:34–82

}

StorageFileCluster::StorageFileCluster(
    const ContextPtr & context,
    const String & cluster_name_,
    const String & filename_,
    const String & format_name_,
    const String & compression_method,
    const StorageID & table_id_,
    const ColumnsDescription & columns_,
    const ConstraintsDescription & constraints_)
    : IStorageCluster(cluster_name_, table_id_, getLogger("StorageFileCluster (" + table_id_.getFullTableName() + ")"))
    , filename(filename_)
    , format_name(format_name_)
{
    StorageInMemoryMetadata storage_metadata;

    /// The archive syntax (e.g. "archive*.zip::file.parquet") is not supported by function fileCluster() yet.
    paths = StorageFile::FileSource::parse(filename_, context, /* allow_archive_path_syntax = */ false).paths;

    if (columns_.empty())
    {
        ColumnsDescription columns;
        if (format_name == "auto")
            std::tie(columns, format_name) = StorageFile::getTableStructureAndFormatFromFile(paths, compression_method, std::nullopt, context);
        else
            columns = StorageFile::getTableStructureFromFile(format_name, paths, compression_method, std::nullopt, context);

        storage_metadata.setColumns(columns);
    }
    else
    {
        if (format_name == "auto")
            format_name = StorageFile::getTableStructureAndFormatFromFile(paths, compression_method, std::nullopt, context).second;
        storage_metadata.setColumns(columns_);
    }

    auto & storage_columns = storage_metadata.columns;

    /// Not grabbing the file_columns because it is not necessary to do it here.
    std::tie(hive_partition_columns_to_read_from_file_path, std::ignore) = HivePartitioningUtils::setupHivePartitioningForFileURLLikeStorage(
        storage_columns,
        paths.empty() ? "" : paths.front(),
        columns_.empty(),
        std::nullopt,
        context);

    storage_metadata.setConstraints(constraints_);
    storage_metadata.setVirtuals(VirtualColumnUtils::getVirtualsForFileLikeStorage(storage_metadata.columns, context));
    setInMemoryMetadata(storage_metadata);
}

void StorageFileCluster::updateQueryToSendIfNeeded(DB::ASTPtr & query, const StorageSnapshotPtr & storage_snapshot, const DB::ContextPtr & context)
{