using approve in REST URL

MealDayRestService.java

 /**
 * @author Jagmeet
 * @author anirudh
 */
@Component
@Validated
public class MealDayRestService {

    private static final String MEAL_DAY_ID = "mealDayId";
    private static final String USER_ID = "userId";

    @Autowired
    private MealDayService mealDayService;

    @Autowired
    private MealDayTransformer transformer;

    /**
     * Retrieves count of meal days for a meal plan and status passed.
     *
     * @param mealPlanId : unique id for meal plan
     * @param status     : status of meal days
     * @return : count of meal days for passed meal plan and status.
     */
    @GET
    @Path("mealDay/{id}")
    @Produces(MediaType.APPLICATION_JSON)
    public MealDayDTO getMealDay(@PathParam("id") Long id) {
        MealDay mealDay = mealDayService.get(id);
        return transformer.toDTO(mealDay);
    }

    
    @PUT
    @Path("mealDay/user/{userId}/saveAsDraft")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    public MealDayDTO saveAsDraft(@PathParam(USER_ID) Long userId, MealDayDTO mealDayDTO) {
        MealDay mealDay = transformer.toDomain(mealDayDTO);
        mealDay = mealDayService.updateMealDay(mealDay, userId);
        return getMealDay(mealDay.getId());
    }

    @PUT
    @Path("mealDay/user/{userId}/submitForApproval")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    public MealDayDTO submitForApproval(@PathParam(USER_ID) Long userId, MealDayDTO mealDayDTO) {
        MealDay mealDay = transformer.toDomain(mealDayDTO);
        mealDay = mealDayService.updateMealDay(mealDay, userId, WorkflowStatus.SUBMITTED_FOR_APPROVAL);
        return getMealDay(mealDay.getId());
    }

    @PUT
    @Path("mealDay/{mealDayId}/user/{userId}/approve")
    @Produces(MediaType.APPLICATION_JSON)
    public void approveMealDay(@PathParam(MEAL_DAY_ID) Long mealDayId, @PathParam(USER_ID) Long userId) {
        mealDayService.approveMealDay(mealDayId, userId);
    }

    @PUT
    @Path("mealDay/{mealDayId}/user/{userId}/reject")
    @Produces(MediaType.APPLICATION_JSON)
    public void rejectMealDay(@PathParam(MEAL_DAY_ID) Long mealDayId, @PathParam(USER_ID) Long userId) {
        mealDayService.rejectMealDay(mealDayId, userId);
    }

}

UserId is not for the user who approves it
but it is the identifies