public Command getCommand(Object value) {
if (value instanceof String) {
String owner = (String) value;
boolean isOwnedByAssociation = ASSOCIATION.equals(owner);
Association association = memberEnd.getAssociation();
if (association.getMemberEnds().size() > 2) {
Activator.log.warn("Cannot change End owner for n-ary associations"); // $NON-NLS-1$
return UnexecutableCommand.INSTANCE;
}
// Classifier classifier = memberEnd.getClass_();
// EStructuralFeature ownedEndFeature =
// association.eClass().getEStructuralFeature(UMLPackage.ASSOCIATION__OWNED_END);
Command command = null;
if (isOwnedByAssociation) { // Owned by Association
IElementEditService provider = ElementEditServiceUtils.getCommandProvider(association);
if (provider != null) {
EStructuralFeature feature = UMLPackage.eINSTANCE.getAssociation_OwnedEnd();
List<Property> attributeList = new ArrayList<Property>();
attributeList.addAll(association.getOwnedEnds());
attributeList.add(memberEnd);
// association.eSet(feature, attributeList);
SetRequest request = new SetRequest(association, feature, attributeList);
ICommand createGMFCommand = provider.getEditCommand(request);
command = new GMFtoEMFCommandWrapper(createGMFCommand);
}
} else { // Owned by Classifier
Type ownerType;
List<Type> ownerList = association.getEndTypes();
if (ownerList.get(0).equals(memberEnd.getType()) && ownerList.size() > 1) {
ownerType = ownerList.get(1);
} else {
ownerType = ownerList.get(0);
}
EStructuralFeature ownedAttributeFeature = getFeatureForType(ownerType);
if (ownedAttributeFeature != null) {
List<Property> attributeList = new ArrayList<Property>();
attributeList.addAll((EList<Property>) ownerType.eGet(ownedAttributeFeature));
attributeList.add(memberEnd);
IElementEditService provider = ElementEditServiceUtils.getCommandProvider(ownerType);
if (provider != null) {
SetRequest request = new SetRequest(ownerType, ownedAttributeFeature, memberEnd);
ICommand createGMFCommand = provider.getEditCommand(request);
command = new GMFtoEMFCommandWrapper(createGMFCommand);
}
}
}
if (command != null) {
this.currentValue = owner;
} else {
Activator.log.warn("Cannot modify the memberEnd owner");
}
return command;
}
return UnexecutableCommand.INSTANCE;
}
