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EMF Compare

Revision as of 09:17, 27 May 2009 by (Talk | contribs) (Current Tasks)


The EMF Compare project is part of EMFT (EMF Technology).

EMF Compare brings model comparison to the EMF framework, this tool provides generic support for any kind of metamodel in order to compare and merge models. The objectives of this component are to provide a stable and efficient generic implementation of model comparison and to provide an extensible framework for specific needs.

The comparison process is divided in 2 phases: matching and differencing. The matching phase browses the model version figuring out which element comes from which other one, then the differencing process browses the matching result and create the corresponding delta. This delta may itself be serialized as a model.



The EMF Compare development team does its best to maintain downward compatibility towards Europa (3.3). Following is the compatibility chart :

EMF Compare Eclipse 3.2 - EMF 2.2 Eclipse 3.3 - EMF 2.3 Eclipse 3.4 - EMF 2.4 Eclipse 3.5 - EMF 2.5
0.7 OK
0.8 KO OK OK

An empty cell indicates that the compatibility hasn't been tested for a particular combination.


User Guide

Developer Guide


Roadmap & History


1.1.0 - Eclipse 3.5

- ease of UI reuse and extensibility
- "Live" Match and Diff Computation
- Performances and Scalability

1.0.0 - Eclipse 3.5

- patch/changeset model 
- UI extensibility 
- Graphical modelers integration
- Remote proxy resolving
- Incubation status exit
- ResourceSet match (inter-models links)


0.8.0 - Ganymede (2008)

- « 3 way » comparison
- confirm RCP/Domain uses cases for diff/synchronization
- diff engine extensibility
- diff model extension
- performances enhancements
- tutorials/documentation

0.7.0 branch (2007)

- merge/differencing
- reference documentation
- « 2 way » comparison
- Ecore/XMI Id handling
- metamodel agnostic
- match engine extensibility
- export API


The project developers are:

Cedric Brun (Obeo), project lead

Laurent Goubet (Obeo)

Jonathan Musset (Obeo)

Antoine Toulme (Intalio Inc.)


Any issue should be reported to the Bugzilla You may also contact the team using the EMFT newsgroup.


20/03/2008 - Short talk given at EclipseCon 2008 An update on EMF Compare

10/10/2007 - Talk given at Eclipse Summit Europe 2007 EMF Compare : One year later.

05/03/2007 - We presented the project at EclipseCon through a panel. Here is some feedback: Model Comparison Panel 2007.

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