class CalendarServiceImpl implements CalendarService, UserDataDeletable {

    @Override
    public boolean addEntryTo(final OlatCalendar cal, final CalendarEntry calendarEntry) {
        Boolean persistSuccessful = calendarDao.addEventTo(cal, calendarEntry);
        informAboutCalendarChange(cal);
        return persistSuccessful.booleanValue();
    }

    private  CalendarServiceImpl();
      CalendarServiceImpl(CalendarDao calendarDao, CoordinatorManager coordinatorManager);

}