add document

src/main/java/ru/soune/nocopy/handler/RegRequestHandler.java

@@ -16,7 +16,6 @@ import ru.soune.nocopy.exception.NotValidFieldException;
 import ru.soune.nocopy.exception.ValidationException;
 import ru.soune.nocopy.handler.validator.RegRequestValidator;
 import ru.soune.nocopy.repository.ReferralJpaRepository;
-import ru.soune.nocopy.repository.ReferralLevelRepository;
 import ru.soune.nocopy.repository.UserRepository;
 import ru.soune.nocopy.service.register.AuthService;
 import ru.soune.nocopy.service.mail.EmailService;
@@ -59,8 +58,8 @@ public class RegRequestHandler implements RequestHandler {
 
         String referralLink = regRequest.getReferralLink();
 
+        if (referralLink != null) {
             Referral referral = referralJpaRepository.findByReferralLink(referralLink);
-
             if (referral == null) {
                 throw new NotValidFieldException("Referral link is not found:" + referralLink +
                         referralLink, new BaseResponse(request.getMsgId(),
@@ -69,6 +68,7 @@ public class RegRequestHandler implements RequestHandler {
                                 "referralLink", referralLink
                 )));
             }
+        }
 
         BindingResult bindingResult = new BeanPropertyBindingResult(regRequest, "regRequest");