[news.eclipse.tools.emf] ChangeDescription applyAndReverse performance i

[Bryan Hunt <bhunt@xxxxxxx>]

I've got a performance problem that I've narrowed down to 
applyAndReverse() on a ChangeDescription.  My code looks something like:

ChangeDescription changes = changeRecorder.endRecording();
changes.applyAndReverse();

// process changes

change.applyAndReverse();
changeRecorder.beginRecording(Collections.singleton(this));

I first commented out my processing code and that made no difference in 
the performance.  As soon as I commented out both calls to 
applyAndReverse(), my performance problem was gone.  I think my 
solution will be to write a custom change recorder that that captures 
the new state instead of the old state.  It won't support rollbacks, 
but I hope it will be much faster.  Comments?

Bryan