@Override
 @Secured({"ROLE_USER"})
 @Transactional(readOnly = true)
 public Computer find(long id) {
   LOGGER.debug("Find computer with id : {}", id);
   return computerDAO.findOne(id);
 }
 @Override
 @Secured({"ROLE_USER"})
 @Transactional(readOnly = true)
 public String getComputerDetails(Computer c) {
   LOGGER.debug("Getting details of the computer : {}", c);
   Computer computer = computerDAO.findOne(c.getId());
   return computer.toString();
 }