CreateElementRequest req = new CreateElementRequest(UMLElementTypes.Component_2001);

IProgressMonitor monitor = null;
IAdaptable info = null;

ComponentCreateCommand ccc = new ComponentCreateCommand(req);
try {
	ccc.doExecuteWithResult(monitor,info);
} catch (ExecutionException e1) {
	e1.printStackTrace();
}

public CommandResult doExecuteWithResult(IProgressMonitor monitor,
		IAdaptable info) throws ExecutionException {

	Component newElement = UMLFactory.eINSTANCE.createComponent();

	Package owner = (Package) getElementToEdit();
	owner.getPackagedElements().add(newElement);
		
	//doConfigure(newElement, monitor, info);

	((CreateElementRequest) getRequest()).setNewElement(newElement);
	return CommandResult.newOKCommandResult(newElement);
}

private ShapeNodeEditPart selectedElement;

CompoundCommand cc = new CompoundCommand("Create component");
		
//next line changed 
CreateViewRequest topicRequest = CreateViewRequestFactory.getCreateShapeRequest(UMLElementTypes.Component_2001, selectedElement.getDiagramPreferencesHint());

//this part is mostly useless but least the element should get some location
Point p = selectedElement.getFigure().getBounds().getTopRight().getCopy();
topicRequest.setLocation(p.translate(100, 100));
				
//next line changed MapEditPart to DiagramEditPart
DiagramEditPart mapEditPart = (DiagramEditPart) selectedElement.getParent();
Command createTopicCmd = mapEditPart.getCommand(topicRequest);
		
cc.add(createTopicCmd);

selectedElement.getDiagramEditDomain().getDiagramCommandStack().execute(cc);

/** The diagram editor. */
protected UMLDiagramEditor diagramEditor=null;

/** The clazzdiagramedit part. */
protected DiagramEditPart clazzdiagrameditPart;



/** The papyrus editor. */
protected PapyrusMultiDiagramEditor papyrusEditor;

IEditorPart editorPart = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActiveEditor();
papyrusEditor =((PapyrusMultiDiagramEditor)editorPart);

EObject model = null;
try {
			
	//get root element
	model = UmlUtils.getUmlModel().lookupRoot();
	} catch (org.eclipse.papyrus.resource.NotFoundException e) {
	e.printStackTrace();
}

//it is possible to add new elements to packages
final org.eclipse.uml2.uml.Package modelpackage = (org.eclipse.uml2.uml.Package) model;

//Add new class to model
TransactionalEditingDomain ted = TransactionUtil.getEditingDomain(model);
ted.getCommandStack().execute(new RecordingCommand(ted) {
	protected void doExecute() {
		modelpackage.createOwnedClass("ClassName", true);
	}
});


//Make some checks and place the new class to diagram.
for(int i = 0; i < modelpackage.getOwnedElements().size(); ++i)
{
	if( modelpackage.getOwnedElements().get(i) instanceof org.eclipse.uml2.uml.Class )
	{
		org.eclipse.uml2.uml.Class c = (org.eclipse.uml2.uml.Class) modelpackage.getOwnedElements().get(i);
		if( c instanceof NamedElement)
		{
			NamedElement ne = c;
			if (ne.getName().equals("ClassName"))
			{
				Object object = c;

				//add the new class element to diagram
				DropObjectsRequest dropObjectsRequest = new DropObjectsRequest();
				ArrayList list = new ArrayList();
				list.add((org.eclipse.uml2.uml.Element)object);
				dropObjectsRequest.setObjects(list);
				dropObjectsRequest.setLocation(new Point(20,100));
				Command commandDrop = getDiagramEditPart().getCommand(dropObjectsRequest);
				diagramEditor.getDiagramEditDomain().getDiagramCommandStack().execute(commandDrop);
			}
		}
	}
}

protected DiagramEditPart getDiagramEditPart()
{

	diagramEditor = (UmlClassDiagramForMultiEditor)papyrusEditor.getActiveEditor();
	clazzdiagrameditPart = (DiagramEditPart)diagramEditor.getGraphicalViewer().getEditPartRegistry().get(diagramEditor.getDiagram());
	return clazzdiagrameditPart;

}

                EObject model = null;
	
		try {
					
			// Get root element
			model = UmlUtils.getUmlModel().lookupRoot();
			} catch (org.eclipse.papyrus.resource.NotFoundException e) {
			e.printStackTrace();
		}
		
		// Get the model package
		final org.eclipse.uml2.uml.Package modelpackage = (org.eclipse.uml2.uml.Package) model;

		// Add new elements to the model
		TransactionalEditingDomain ted = TransactionUtil.getEditingDomain(model);
		ted.getCommandStack().execute(new RecordingCommand(ted) {
			
			EList<Element> elementsInModel;
			EList<Element> elementsInComponent;
			Component c;
			Port p;
			Interface newItf;
			Stereotype s;
			
			protected void doExecute() {
				
				String text = "";
					
				elementsInModel = modelpackage.allOwnedElements();
				
				/*
				 * Get all the components in the model.
				 */
				
				for (int i=0; i<elementsInModel.size(); i++) {
					if (elementsInModel.get(i).eClass().getName().compareTo("Component") == 0) {
						c = (Component) elementsInModel.get(i);
						text = text + "Component: " + c.getName() + System.getProperty("line.separator");
						/*
						 * For each component, get all the ports (stereotyped).
						 */
						elementsInComponent = c.getOwnedElements();
						for (int j=0; j<elementsInComponent.size(); j++) {
							if (elementsInComponent.get(j).eClass().getName().compareTo("Port") == 0) {
								p = (Port) elementsInComponent.get(j);
								text = text + "      Port: " + p.getName() + System.getProperty("line.separator");
								/*
								 * For each port, generate a new Interface, stereotyped with the same
								 * stereotype as the port.
								 * Rename the port from [name] to [_name].
								 * Associate the new interface to its corresponding port
								 * by typing the port with the new interface
								 * (port.setType(newInterface)).
								 */
								newItf = c.createOwnedInterface(p.getName());
								p.setName("_" + p.getName());
								s = p.getAppliedStereotypes().get(0);
								newItf.applyStereotype(s);
								p.setType(newItf);
								
								text = text + "      New inteface: " + newItf.getName() + System.getProperty("line.separator");
							}
						}
					}
				}
				JOptionPane.showMessageDialog(null, text);				
			}
		});
		
		/*
		 * Generate the Class diagram containing all the newly created
		 * interfaces.
		 */
		
		DropObjectsRequest dropObjectsRequest = new DropObjectsRequest();
		ArrayList list = new ArrayList();
		EList<Element> elementsInModel = modelpackage.allOwnedElements();
		for (int i=0; i<elementsInModel.size(); i++) {
			if (elementsInModel.get(i).eClass().getName().compareTo("Interface") == 0)
				list.add((org.eclipse.uml2.uml.Element)elementsInModel.get(i));
		}
		dropObjectsRequest.setObjects(list);
		dropObjectsRequest.setLocation(new Point(20,100));
		Command commandDrop = getDiagramEditPart().getCommand(dropObjectsRequest);
		
		((UmlClassDiagramForMultiEditor) EditorUtils.getMultiDiagramEditor().getActiveEditor()).getDiagram();
		
		getDiagramEditPart().getDiagramEditDomain().getDiagramCommandStack().execute(commandDrop);