public void disapproveRequest(UserRequest userRequest, Person evaluator) {
   RequestEvaluation requestEvaluation = new RequestEvaluation();
   requestEvaluation.setPerson(evaluator);
   requestEvaluation.setRequest(userRequest);
   requestEvaluation.setEvaluationDate(new Date());
   userRequest.setStatus(Constants.DISAPPROVED);
   this.insertRequestEvaluation(requestEvaluation);
   this.updateUserRequest(userRequest);
 }
 public void approveRequest(UserRequest request, Person evaluator) {
   RequestEvaluation requestEvaluation = new RequestEvaluation();
   requestEvaluation.setPerson(evaluator);
   requestEvaluation.setRequest(request);
   requestEvaluation.setEvaluationDate(new Date());
   request.setStatus(Constants.APPROVED);
   this.insertRequestEvaluation(requestEvaluation);
   this.updateUserRequest(request);
   if (!request.isTeachingRequest()) {
     this.approveAssistantRequest(request, evaluator);
   }
 }