Re: Comparing two models for differences

Martin Matula wrote:
> Hi Brian,
> problem with ordering is that for some collections MDR uses HashSet to 
> optimize for performance. Ordering the output for each operation would 
> be counterproductive. One solution to this problem could be to implement 
> ordering outside of MDR in XMI writer. This way the writer will preserve 
> ordering with any JMI service (not only with MDR).

Yes, this is true. And, presumably the infrastructure for doing this 
would be reusable by other tools such as mine.

> For some usecases it could be also better to use "metamodel-based diff", 
> which is a utility that operates on MDR directly rather than on XMI 
> files and compares two different datastructures using their metamodel. 
> One of my students developed such a module for NetBeans as part of his 
> master thesis. Hopefuly he will contribute it soon.

That would definitely be a cleaner solution since it would not rely on a 
implementation-specific behavior. Is his thesis available somewhere?

Thanks,
Brian