/**
* Method to roll back a transaction.
*
* @param boolean $toSavepoint If true, rollback to the last savepoint.
*
* @return void
*
* @since 12.3
* @throws RuntimeException
*/
public function transactionRollback($toSavepoint = false)
{
$this->connect();
if (!$toSavepoint || $this->transactionDepth <= 1) {
parent::transactionRollback($toSavepoint);
} else {
$savepoint = 'SP_' . ($this->transactionDepth - 1);
$this->setQuery('ROLLBACK TO SAVEPOINT ' . $this->quoteName($savepoint));
if ($this->execute()) {
$this->transactionDepth--;
}
}
}
