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Relationship between EMF Compare and eclipse Compare [message #1741387]

Wed, 24 August 2016 15:27

Conor O'Mahony

Messages: 27
Registered: August 2016

Junior Member

Hi,

We have an RCP application that currently uses eclipse compare, where we extend org.eclipse.compare.CompareEditorInput to compare two inputs and use CompareUI to launch a compare editor.

In a sub project of this application, we are looking at using EMF Compare, to compare instances of EMF models. I can launch the default EMF compare editor by following this guide, where I pass an instance of org.eclipse.emf.compare.ide.ui.internal.editor.ComparisonEditorInput to be launched by CompareUI, and this opens the EMF compare editor.

What I am wondering is, what in particular is the relationship (if any) between the differences that are calculated by eclipse compare and the differences calculated by EMF compare?
In eclipse compare we have org.eclipse.compare.structuremergeviewer.DiffNode as the result of a computed difference, and in EMF compare we have the org.eclipse.emf.compare.Diff interface and associated classes. Is there any mechanism for adapting one type of calculated difference to the other?

Many thanks,
Conor

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Re: Relationship between EMF Compare and eclipse Compare [message #1741456 is a reply to message #1741387]

Thu, 25 August 2016 09:58

Philip Langer

Messages: 99
Registered: March 2015
Location: Vienna, Austria

Member

Hi Conor,

On the level of the computed differences, there is no relationship between eclipse.compare and EMF Compare. EMF Compare uses its own model to represent the results of a comparison (matches, differences, conflicts, ..., cf. /org.eclipse.emf.compare/model/compare.ecore), which are then shown in the UI using specific implementations of the structure merge viewer and content merge viewer.

The relationship between eclipse.compare and EMF Compare is mainly that EMF Compare implements its own structure and content merge viewers to show the results of a model comparison accordingly.

I hope this helps!

Best wishes,

Philip

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Philip Langer

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