/**
* 实例化HPOD对象
* @return HTransaction
*/
public static function instance()
{
if (self::$_model === null) {
self::$_model = new HTransaction();
}
return self::$_model;
}
/**
* 开启事务
* @return HTransaction
*/
public static function beginTransaction()
{
$transaction = HTransaction::instance();
$transaction->beginTransaction();
return $transaction;
}
