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EMF Compare [message #1116521]

Wed, 25 September 2013 14:57

Julio Sandobalin

Messages: 12
Registered: August 2013

Junior Member

Hi guys,

I run the example (http://wiki.eclipse.org/EMF_Compare/FAQ#How_can_I_use_EMF_Compare_programmatically.3F) with the jars:

com.google.guava_11.0.2.v201303041551.jar
org.eclipse.emf.common_2.9.0.v20130528-0742.jar
org.eclipse.emf.compare_3.0.0.201306101322.jar
org.eclipse.emf.compare.rcp_2.1.0.201306101322.jar
org.eclipse.emf.ecore_2.9.0.v20130528-0742.jar
org.eclipse.emf.ecore.xmi_2.9.0.v20130528-0742.jar
org.eclipse.uml2.common_1.8.0.v20130610-0712.jar
org.eclipse.uml2.types_1.1.0.v20130610-0712.jar
org.eclipse.uml2.uml_4.1.0.v20130610-0712.jar

Code example (http://wiki.eclipse.org/EMF_Compare/FAQ#How_can_I_use_EMF_Compare_programmatically.3F) :

public void compare(File model1, File model2) {
URI uri1 = URI.createFileURI("path/to/first/model.xmi");
URI uri2 = URI.createFileURI("path/to/second/model.xmi");
Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put("xmi", new XMIResourceFactoryImpl());
ResourceSet resourceSet1 = new ResourceSetImpl();
ResourceSet resourceSet2 = new ResourceSetImpl();
resourceSet1.getResource(uri1, true);
resourceSet2.getResource(uri2, true);
IComparisonScope scope = new DefaultComparisonScope(resourceSet1, resourceSet2);
Comparison comparison = EMFCompare.builder().build().compare(scope);
List<Diff> differences = comparison.getDifferences();
// Let's merge every single diff
IMerger.Registry mergerRegistry = new IMerger.RegistryImpl();
IBatchMerger merger = new BatchMerger(mergerRegistry);
merger.copyAllLeftToRight(differences, new BasicMonitor());
}

But when I run example in the line (merger.copyAllLeftToRight(differences, new BasicMonitor()) Wink

the ecplise launched the following error:

Exception in thread "main" java.lang.IllegalStateException: No merger found for diff ReferenceChangeSpec
at org.eclipse.emf.compare.merge.IMerger$RegistryImpl.getHighestRankingMerger(IMerger.java:277)
at org.eclipse.emf.compare.merge.BatchMerger.copyAllLeftToRight(BatchMerger.java:89)
at edu.upv.compare.DifferenceModel.compare(DifferenceModel.java:114)
at edu.upv.compare.DifferenceModel.main(DifferenceModel.java:34)

Why do I have the error when I run the example?

Thanks in advance for your help.

Regards.

Julio Sandobalín

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Re: EMF Compare [message #1117224 is a reply to message #1116521]

Thu, 26 September 2013 08:06

Laurent Goubet

Messages: 1902
Registered: July 2009

Senior Member

Julio,

Please refrain from spawning multiple threads for the same issue, and use explicit titles for your threads. http://www.eclipse.org/forums/index.php/t/508839/ should be abandonned in favor to this one where you provide a little more info on your issues.

Quote:

No merger found for diff ReferenceChangeSpec

You create a new registry of mergers, leave it empty and try to use it to merge differences. You are supposed to populate the registry with the different mergers first.

We usually try our best to comment the classes with usage information. Please see the javadoc of the IMerger.Registry for information on standalone usage. Here, you should have used

IMeger.RegistryImpl.createStandaloneInstance()

instead of

new IMerger.RegistryImpl()

Laurent Goubet
Obeo

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