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Bug 244000

Summary: EMF Compare should resolve cross-model references
Product: [Modeling] EMFCompare Reporter: Laurent Goubet <laurent.goubet>
Component: CoreAssignee: EMF Compare <emf.compare-inbox>
Status: CLOSED FIXED QA Contact:
Severity: major    
Priority: P3 CC: cedric.brun, ed, hjoensson, sbouchet
Version: 1.0   
Target Milestone: ---   
Hardware: All   
OS: All   
Whiteboard:
Bug Depends on: 199877    
Bug Blocks: 229663    

Description Laurent Goubet CLA 2008-08-13 06:30:04 EDT 
EMF Compare does not currently resolve inter-model references. This prevents comparison with a VCS when the model to compare has a reference to another in its vicinity.

The GenericMatchEngine's resourceSetMatch() methods should be implemented to fix this.

This bug has been raised mainly to regroup all issues related to cross-model references.
Comment 1 Ed Willink CLA 2008-10-30 02:25:10 EDT 
A few user selectable options are needed.

For instance:

When comparing a multi-package multi-Ecore file model, I would like a deep compare so that the equivalent classes in all 'left' model files are recognised to be the 'same' as the 'right' model files.

When comparing a multi-package multi-Ecore file model with an equivalent multi-package single-Ecore file model, I would like the deep compare to ignore file partitioning.

When double clicking an Ecore model in the CVS synchronisation browser, or just comparing with HEAD, I would like the comparison to be shallow so that the spelling rather than the value of proxies is compared.

Options such as 'same' by hierarchical name, ID attribute, xmi:id, ... should be selectable from a right button menu, in the same way as 'ignore whitespace' in the satndard compare editor.
Comment 2 Laurent Goubet CLA 2009-01-26 12:19:20 EST 
*** Bug 256582 has been marked as a duplicate of this bug. ***
Comment 3 Laurent Goubet CLA 2009-01-27 05:12:50 EST 
A first implementation of a "resource set wide differencing" has been commited on HEAD. The next build will contain this modification and allow for the accurate detection of changes on inter-model references.

This will work fine with local comparison, though proxy resolving is planned for bug #199877 thus comparison with VCS will not detect these references and fall back on the previous behavior.
Comment 4 Laurent Goubet CLA 2009-02-17 11:28:55 EST 
Proxy resolution capabilities have been added to EMF Compare and will be available in the next build. We'll also be building a second feature "EMF Compare Subversive Integration" as subversive does not make use of the Team API as CVS does. Behavior of other VCS haven't been confirmed yet.

With these, cross-model references are now properly resolved to the accurate version according to the currently compared model revision.
Comment 5 Laurent Goubet CLA 2009-05-15 08:33:25 EDT 
FIX available in 0.9.0M5
Comment 6 Laurent Goubet CLA 2011-08-18 04:07:15 EDT 
Closing our "resolved" and "verified" bugs.