public function isColumnSearched( $column )
    {
        $store = $this->getStore();

        if ( isset( $store['search'][$column] ) )
        {
            foreach ( $store['search'][$column] as $search )
            {
                if ( ! empty( $search ) )
                {
                    return true;
                }
            }
        }

        return false;
    }