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From Andrus Adamchik <>
Subject Re: NullPointerException when ObjectContext.commitChanges() called
Date Fri, 26 Aug 2011 18:21:36 GMT

On Aug 26, 2011, at 9:12 PM, Joel Becker wrote:

> imo it would be good to make a note (jira issue?) for us to catch that error
> earlier in cayenne before it becomes a NullPointerException, so it can be
> thrown with a meaningful message like "You haven't even created a data node.
> What on earth are you THINKING?!" :)

Yeah, good idea. There's no Modeler warning, as it is presumed a user might assign a DataNode
later in runtime, but a runtime check seems reasonable. 


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