public function doDeleteAll(ConnectionInterface $con = null)
    {
        if (null === $con) {
            $con = Propel::getServiceContainer()->getWriteConnection(DealerContactVersionTableMap::DATABASE_NAME);
        }
        $affectedRows = 0; // initialize var to track total num of affected rows
        try {
            // use transaction because $criteria could contain info
            // for more than one table or we could emulating ON DELETE CASCADE, etc.
            $con->beginTransaction();
            $affectedRows += parent::doDeleteAll($con);
            // Because this db requires some delete cascade/set null emulation, we have to
            // clear the cached instance *after* the emulation has happened (since
            // instances get re-added by the select statement contained therein).
            DealerContactVersionTableMap::clearInstancePool();
            DealerContactVersionTableMap::clearRelatedInstancePool();

            $con->commit();
        } catch (PropelException $e) {
            $con->rollBack();
            throw $e;
        }

        return $affectedRows;
    }