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    }

    /**

     *

     * @param int $feed_id

     * @return boolean

     */

    public function incTotalExternalShared($id)

    {

        $update = $this->sql->update(self::_TABLE);

        $update->set(['total_external_shared' => new Expression('total_external_shared + 1')]);

        $update->where->equalTo('id', $id);

        return $this->executeUpdate($update);

    }

    /**

     *

     * @param int $id

     * @return int

     */

    public function fetchTotalExternalShared($id)

    {

        $select = $this->sql->select(self::_TABLE);

        $select->columns(['total_external_shared']);

        $select->where->equalTo('id', $id);

        $record = $this->executeFetchOneArray($select);

        return $record['total_external_shared'];