public function startTransaction() {
$this->checkTransactionNotStartedYet();
$xid = XIDFactory::getInstance()->newXID();
return new XATransaction($xid);
}
/**
* @static
* @return XIDFactory
*/
public static function getInstance() {
if (!isset(self::$factory)) {
self::$factory = new DefaultXIDFactory();
}
return self::$factory;
}