protected function makePdoInner($dsn, $username, $password, array $options, array $initCommands)
{
try {
$pdo = $this->instantiator->instantiate($dsn, $username, $password, $options);
} catch (PDOException $e) {
$newException = new CannotConnectException($e->getMessage(), $e->getCode(), $e);
$newException->errorInfo = $e->errorInfo;
throw $newException;
}
foreach ($initCommands as $command) {
$pdo->exec($command);
}
return $pdo;
}