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Home » Modeling » Compare » Customization and Team support(Customization and Team support)
Customization and Team support [message #1066838] Thu, 04 July 2013 12:14 Go to next message
Kamel Ouadou is currently offline Kamel Ouadou
Messages: 1
Registered: July 2013
Junior Member
I'm working with EMFCompare2.0 and I try to integrate it with our team provider implementation.
What we need is the ability to customize the default Diff Engine and Match Engine in order to hide complexity of our meta-models. For instance we want to igonre some classes and features using custom diff engine and custom match engine.
With EMFCompare 1.3; we've defined our custom engines and use them by EMFCompare Extension points but with EMFCompare 2.0 there are not same extension points and specially no extension point on DiffEngine.

I've looked to the Developper Guide in order to do customization but I don't find how to change EMFCompare.Builder().().() chained calls when comparison is launched from Team support menus such as "Compare with .." menu or any "Team>> Merge Tool" menu.

Thanks & Regards,


Re: Customization and Team support [message #1066916 is a reply to message #1066838] Fri, 05 July 2013 03:02 Go to previous messageGo to next message
Laurent Goubet is currently offline Laurent Goubet
Messages: 1621
Registered: July 2009
Senior Member

There are quite a few extension points for EMF Compare, and you can take a look at the extensions we provide for UML and GMF comparisons for examples of use. The most important would be that will allow you to alter the result of every single phase of the comparison. This "post-processing" way of doing things has proven to be enough for our extension use cases, though if you need to replace the default behavior as a whole, this can only be done (through extension points) for the match, using the extension point.

The wiki is not fully written yet, and though we made sure that most of EMF Compare can be extended at will, we are still missing a lot of extension points (most extensions can only be setup programatically for now). If there are things you cannot achieve using the existing extension facilities, please elaborate on your use case and what you need in fine.

Laurent Goubet
Re: Customization and Team support [message #1403699 is a reply to message #1066916] Fri, 25 July 2014 08:39 Go to previous message
Veronique Blanchet
Messages: 1
Registered: July 2014
Junior Member

I'm a beginner with EMF Compare. I'm also trying to customize the Diff Engine. I want first to do a comparison without taking into account the "move" difference. Then I will maybe need to add others kind of differences so I decided to extend the DefaultDiffEngine class as written in the Developer Guide.
I found an extension point corresponding to this engine ( and I added my extension.
But I don't understand what to do next in order to make it works (actually when I launch it, I can just select it on the configuration menu, but it's not used for the comparison). In the developer guide, it's written that we need to write this:
A custom diff engine can then be used for your comparisons:

IDiffEngine customDiffEngine === new MyDiffEngine(...);

but where are we supposed to write this ?

Thank you in advance,

Best regards,

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