什么时候打电话给NHibernate Rollback?

时间:2012-08-17 19:24:00

标签: nhibernate

我正在使用NHibernate将一些数据插入表A.如果表A事务失败,我想更新表B中的状态。如何检查它是否失败?

以下是我目前的代码:

// Add userId to Receiver
Receiver receiver = new Receiver();
receiver.User = User.GetById(Convert.ToInt32(listItem.Value));
receiver.Notification = Notification.GetById(notification.NotificationId);
receiver.Save();

我在哪里调用NHibernate事务?如果失败,我在哪里调用NHibernate Rollback并更新表B状态?

2 个答案:

答案 0 :(得分:6)

查看关于异常处理的官方NHibernate文档:http://nhibernate.info/doc/nh/en/index.html#manipulatingdata-exceptions

using ( ISession session = sessionFactory.OpenSession() )
{
    using ( ITransaction transaction = session.BeginTransaction() )
    {
        try
        {
            // Do your save/update here for Table A

            transaction.Commit();
        }
        catch( Exception e )
        {
            // Your save or update failed so this is where you
            // could capture that info and update your Table B

            transaction.Rollback();
        }
    }
}

根据我的记忆,你实际上不必调用tx.Rollback(),因为当你的代码离开使用块时,它会自动执行,但是我再也记不住了。尝试一下,如果它不像我刚才描述的那样,你可以手动回滚捕获。

答案 1 :(得分:2)

using (ISession session = factory.OpenSession())
using (ITransaction tx = session.BeginTransaction())
{
    // do some work
    tx.Commit();
}

或手动

ISession session = factory.openSession();
try
{
   // do some work
   session.Flush();
   currentTransaction.Commit();
}
catch (Exception e)
{
   currentTransaction.Rollback();
   throw;
}
finally
{
   session.Close();
}

查看NHibernate transactions了解更多详情