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Difference between revisions of "EMF Compare FAQ"
(→Is EMF Compare, as EMF, able to run outside of Eclispe ?) |
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// Creates the match then the diff model for those two models | // Creates the match then the diff model for those two models | ||
final MatchModel match = new DifferencesServices().modelMatch(model1, model2, new NullProgressMonitor()); | final MatchModel match = new DifferencesServices().modelMatch(model1, model2, new NullProgressMonitor()); | ||
− | final DiffModel diff = new DiffMaker().doDiff(match | + | final DiffModel diff = new DiffMaker().doDiff(match); |
// Prints the results | // Prints the results |
Revision as of 10:46, 10 August 2007
Contents
Users
My model is compared as a text-file, how can EMF compare know what file it should handle ?
Q : My model is compared as a text-file, how can EMF compare know what file it should handle ?
A : EMF compare uses a content-type to know if it should be started or not. By default this content-type is composed of *.ecore and *.uml file but you may add your own extension using the Preferences view / Global / Content-types and adding your file extension in the "Model File" content-type.
Developpers
How can I programatically add my model file extension in EMF Compare so that it is called automatically ?
Q : How can I programatically add my model file extension in EMF Compare so that it is called automatically ?
A : Using the "Model File" content-type defined with EMF Compare, here is a sample from a plugin.xml:
<extension point="org.eclipse.core.contenttype.contentTypes"> <file-association content-type="org.eclipse.emf.compare.ui.contenttype.ModelContentType" file-extensions="uml13" file-names="*"/> </extension>
Is EMF Compare, as EMF, able to run outside of Eclispe ?
Q : Is EMF Compare able to compare "in-memory" objects, and can it be run without Eclispe ?
A: Yes, here is a snippet doing that:
/** * This application will try and launch an headless model comparison. * * @author Cedric Brun <a href="mailto:cedric.brun@obeo.fr">cedric.brun@obeo.fr</a> */ public final class ExampleLauncher { /** * This class doesn't need to be instantiated. */ private ExampleLauncher() { // prevents instantiation } /** * Launcher of this application. * * @param args * Arguments of the launch. */ public static void main(String[] args) { if (args.length == 2 && new File(args[0]).canRead() && new File(args[1]).canRead()) { // Creates the resourceSet where we'll load the models final ResourceSet resourceSet = new ResourceSetImpl(); try { // Loads the two models passed as arguments final EObject model1 = ModelUtils.load(new File(args[0]), resourceSet); final EObject model2 = ModelUtils.load(new File(args[1]), resourceSet); // Creates the match then the diff model for those two models final MatchModel match = new DifferencesServices().modelMatch(model1, model2, new NullProgressMonitor()); final DiffModel diff = new DiffMaker().doDiff(match); // Prints the results try { System.out.println(ModelUtils.serialize(match)); System.out.println(ModelUtils.serialize(diff)); } catch (IOException e) { e.printStackTrace(); } // System.out.println("saving diff as \"result.diff\""); // ModelUtils.save(diff, "result.diff"); // System.out.println("saving match as \"result.match\""); // ModelUtils.save(match, "result.match"); // Serializes the result as "result.emfdiff" in the directory this class has been called from. System.out.println("saving emfdiff as \"result.emfdiff\""); //$NON-NLS-1$ final ModelInputSnapshot snapshot = DiffFactory.eINSTANCE.createModelInputSnapshot(); snapshot.setDate(Calendar.getInstance().getTime()); snapshot.setMatch(match); snapshot.setDiff(diff); ModelUtils.save(snapshot, "result.emfdiff"); //$NON-NLS-1$ } catch (IOException e) { // shouldn't be thrown e.printStackTrace(); } catch (InterruptedException e) { e.printStackTrace(); } } else { System.out.println("usage : Launcher <Model1> <Model2>"); //$NON-NLS-1$ } } }