/**
* Return object with primary key 'key' or null
*
* @param userId primary key of object user
* @return object with primary key 'key' or null
* @throws ServiceException
*/
@Override
public Role getRoleById(Long userId) throws ServiceException {
Role role;
try {
role = roleDao.getById(userId);
} catch (DaoException e) {
throw new ServiceException(e);
}
return role;
}
