public class DerivedMemberAwareEditorOpener extends LanguageSpecificURIEditorOpener implements IDerivedMemberAwareEditorOpener{

	@Inject
	private IJvmModelAssociations associations;
	
	@Override
	public IEditorPart open(URI uri, IMember member, boolean select) {
		if (member != null) {
			URI memberURI = new TypeURIHelper().getFullURI(member);
			String identifier = memberURI.fragment();
			URI uriWithQuery = uri.appendQuery(identifier);
			super.open(uriWithQuery, select);
		}
		return open(uri, select);
	}
	
	@Override
	protected EObject findEObjectByURI(URI uri, XtextResource resource) {
		if (uri.query() != null) {
			String identifier = uri.query();
			TreeIterator<EObject> contents = EcoreUtil.<EObject>getAllContents(resource, true);
			while(contents.hasNext()) {
				EObject content = contents.next();
				if (content instanceof JvmMember) {
					String identifierFromResource = ((JvmIdentifiableElement) content).getIdentifier();
					if (identifier.equals(identifierFromResource)) {
						EObject sourceElement = associations.getPrimarySourceElement(content);
						return sourceElement;
					}
				}
			}
		}
		return super.findEObjectByURI(uri, resource);
	}

}

public void configureLanguageSpecificURIEditorOpener(com.google.inject.Binder binder) {
		if (org.eclipse.ui.PlatformUI.isWorkbenchRunning()) { 
			binder.bind(org.eclipse.xtext.ui.editor.IURIEditorOpener.class).annotatedWith(org.eclipse.xtext.ui.LanguageSpecific.class).to(org.eclipse.xtext.xbase.ui.jvmmodel.navigation.DerivedMemberAwareEditorOpener.class); 
			binder.bind(org.eclipse.xtext.common.types.ui.navigation.IDerivedMemberAwareEditorOpener.class).to(org.eclipse.xtext.xbase.ui.jvmmodel.navigation.DerivedMemberAwareEditorOpener.class); 
		};
	}