public class ShowBug {

	private static final ResourceSet RESOURCE_SET = new ResourceSetImpl();

	public static void main(String[] args) throws Exception {
	    String JAR_FILE_ECLIPSE_UML2_UML_RESOURCES = "jar:file:/Users/marcadet/.eclipse/org.eclipse.platform_4.2.0_1211646801/plugins/org.eclipse.uml2.uml.resources_4.0.1.v20120913-1441.jar!/";

	    RESOURCE_SET.getPackageRegistry().put(UMLPackage.eNS_URI, UMLPackage.eINSTANCE);
	    RESOURCE_SET.getResourceFactoryRegistry().getExtensionToFactoryMap().put(
                       UMLResource.FILE_EXTENSION,UMLResource.Factory.INSTANCE);
	    Map<URI, URI> _resourceSetURIMap = RESOURCE_SET.getURIConverter().getURIMap();
	    URI uri = URI.createURI(JAR_FILE_ECLIPSE_UML2_UML_RESOURCES);
	    _resourceSetURIMap.put(URI.createURI(UMLResource.METAMODELS_PATHMAP), uri.appendSegment("metamodels").appendSegment(""));

		String name = "Class";
		Model umlMetamodel2 =  (Model) load(URI.createURI(UMLResource.UML_METAMODEL_URI));
		final Class metaclass = (Class) umlMetamodel2.getOwnedType(name);
		System.out.println(name + " : " + metaclass.isMetaclass());
	}

	protected static Package load(URI uri) throws Exception {
		Resource resource = RESOURCE_SET.getResource(uri, true);
		return (Package) EcoreUtil.getObjectByType(resource.getContents(), Literals.PACKAGE);
	}

}