交易C＃的对象？

问题描述

只是好奇，是有在普通C＃对象交易的支持？像

Just curious, is there any support for transactions on plain C# objects? Like

using (var transaction = new ObjectTransaction(obj))
{
  try
  {
    obj.Prop1 = value;
    obj.Prop2 = value;
    obj.Recalculate(); // may fire exception
    transaction.Commit(); // now obj is saved
  }
  except
  {
     transaction.Rollback(); // now obj properties are restored
  }
}

只是为了让答案更加有用;-)还有什么其他语言的相似？

Just to make answers more useful ;-) is there anything similar in other languages?

在STM更新：这里就是它声称：

Update on STM: here's what it claims:

atomic {
  x++;
  y--;
  throw;
}

将离开X / Y不变，包括链式方法的调用。貌似我问。至少这是非常有趣的。我认为这是足够接近。此外，还有是其他语言类似的事情，例如哈斯克尔STM。请注意，我不说，它应该用于生产; - ）

will leave x/y unchanged, including chained methods calls. Looks like what I ask for. At least it's very interesting. I think that's close enough. Also, there're similar things in other languages, for example Haskell STM. Notice I don't say that it should be used for production ;-)

推荐答案

微软正在努力就可以了。阅读关于软件事务内存。

Microsoft is working on it. Read about Software Transactional Memory.

• 第9频道视频：

在STM

• STM.NET
• STM.NET Team Blog
• Channel 9 Video: STM.NET: Who. What. Why.
• Papers on STM

他们使用了一些不同的语法：

They use a few different syntaxes:

// For those who like arrows
Atomic.Do(() => { 
    obj.Prop1 = value;
    obj.Prop2 = value;
    obj.Recalculate();
});

// For others who prefer exceptions
try { 
    obj.Prop1 = value;
    obj.Prop2 = value;
    obj.Recalculate();
}
catch (AtomicMarker) {
}

// we may get this in C#:
atomic { 
    obj.Prop1 = value;
    obj.Prop2 = value;
    obj.Recalculate();
}

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