CQRS/EventStore - 更改两个聚合
我有一个更新两个聚合的命令。由于聚合路由是事务边界，因此我有一个命令对第一个聚合执行repository.Save() 操作，然后我触发另一个命令（从第一个命令内），该命令作用于第二个聚合。每个 Save() 操作都会启动其事件存储事务并提交更改，然后发布它们。
首先，这是否正确，即让一个命令通过另一个命令通知另一个聚合？
我在 Mark Nihjof 的代码中注意到他使用事件处理程序，这很好，因为您可以将事件处理程序注册到同一事件。我尝试使用 J Oliver 的事件存储来执行此操作，但 IDispatchCommit 中的 commits.events 在处理第二个聚合值时引用第一个聚合值。这导致了一些奇怪的错误。
那么我应该找到一种方法来使用 EventHandlers 来完成这项工作，或者在命令中触发命令好吗？
JD
编辑 - 我已经将我的线路切换为使用 .UsingAsynchronousDispatchScheduler() ，现在允许注册事件触发多个事件处理程序，这反过来会在另一个聚合上触发命令，它似乎工作。那么，这是正确的方法吗？而不是使用命令触发命令？
I have a command that updates two aggregates. Since aggregate routes are transactional boundaries, I have a command that does a repository.Save() action on the first aggregate and then I fire another command (from within the first command) which acts on the second aggregate. Each Save() actions starts its Event-Store transaction and commits the changes and then publishes them.
First is this correct, i.e. letting one command notify another aggregate via another command?
I noticed in Mark Nihjof's code that he uses event handlers which is nice as you could register the event handlers to the same event. I tried doing this using J Oliver's Event-Store but my commits.events in IDispatchCommit were referencing the first aggregates values when processing the second. This caused some weird errors.
So should I find a way of making this work with EventHandlers or is firing off commands within commands okay?
JD
Edit - I have used switched my wire up to use .UsingAsynchronousDispatchScheduler() and am now allowing registered events to fire more than one event handler which in turn fires a command on the other aggregate and it seems to work. So, is this the correct way to do it and not use commmands firing commands?
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我认为剥这只猫的皮有一百万零一种方法。我不确定从事件处理程序触发命令是否可行，在这种情况下我必须命令处理程序响应相同的命令。
我确实发现 documently 非常适合参考应用程序。你看过那个吗？
I think there's a million and one ways to skin this cat. I'm not sure firing a command from an event handler is the way to go, I have to command handlers respond to the same command in this instance.
I do find documently good for a reference app. Have you looked a that?