src/main/java/ru/ulstu/conference/controller/ConferenceController.java

@@ -76,7 +76,12 @@ public class ConferenceController {
     public String save(@Valid ConferenceDto conferenceDto, Errors errors) throws IOException {
         conferenceService.filterEmptyDeadlines(conferenceDto);
         conferenceService.checkEmptyFieldsOfDeadline(conferenceDto, errors);
-        conferenceService.checkUniqueName(conferenceDto, errors);
+        conferenceDto.setName(conferenceDto.getTitle());
+        conferenceService.checkUniqueName(conferenceDto,
+                errors,
+                conferenceDto.getId(),
+                "title",
+                "Конференция с таким именем уже существует");
         if (errors.hasErrors()) {
             return CONFERENCE_PAGE;
         }

src/main/java/ru/ulstu/conference/repository/ConferenceRepository.java

@@ -5,13 +5,13 @@ import org.springframework.data.jpa.repository.Modifying;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
 import ru.ulstu.conference.model.Conference;
-import ru.ulstu.name.NameRepository;
+import ru.ulstu.name.BaseRepository;
 import ru.ulstu.user.model.User;
 
 import java.util.Date;
 import java.util.List;
 
-public interface ConferenceRepository extends JpaRepository<Conference, Integer>, NameRepository {
+public interface ConferenceRepository extends JpaRepository<Conference, Integer>, BaseRepository {
     @Query("SELECT c FROM Conference c LEFT JOIN c.users u WHERE (:user IS NULL OR u.user = :user) " +
             "AND (YEAR(c.beginDate) = :year OR :year IS NULL) ORDER BY begin_date DESC")
     List<Conference> findByUserAndYear(@Param("user") User user, @Param("year") Integer year);
@@ -27,6 +27,6 @@ public interface ConferenceRepository extends JpaRepository<Conference, Integer>
     int updatePingConference(@Param("id") Integer id);
 
     @Override
-    @Query("SELECT title FROM Conference c WHERE c.title = :name")
-    String findByName(@Param("name") String name);
+    @Query("SELECT title FROM Conference c WHERE (c.title = :name) AND (:id IS NULL OR c.id != :id) ")
+    String findByNameAndNotId(@Param("name") String name, @Param("id") Integer id);
 }

src/main/java/ru/ulstu/conference/service/ConferenceService.java

@@ -13,7 +13,7 @@ import ru.ulstu.conference.model.ConferenceUser;
 import ru.ulstu.conference.repository.ConferenceRepository;
 import ru.ulstu.deadline.model.Deadline;
 import ru.ulstu.deadline.service.DeadlineService;
-import ru.ulstu.name.NameService;
+import ru.ulstu.name.BaseService;
 import ru.ulstu.paper.model.Paper;
 import ru.ulstu.paper.service.PaperService;
 import ru.ulstu.ping.service.PingService;
@@ -32,7 +32,7 @@ import static org.springframework.util.ObjectUtils.isEmpty;
 import static ru.ulstu.core.util.StreamApiUtils.convert;
 
 @Service
-public class ConferenceService extends NameService {
+public class ConferenceService extends BaseService {
     private final static int MAX_DISPLAY_SIZE = 40;
 
     private final ConferenceRepository conferenceRepository;
@@ -52,6 +52,7 @@ public class ConferenceService extends NameService {
                              PingService pingService,
                              ConferenceNotificationService conferenceNotificationService,
                              EventService eventService) {
+        this.baseRepository = conferenceRepository;
         this.conferenceRepository = conferenceRepository;
         this.conferenceUserService = conferenceUserService;
         this.deadlineService = deadlineService;
@@ -286,12 +287,4 @@ public class ConferenceService extends NameService {
                 .filter(dto -> dto.getDate() != null || !org.springframework.util.StringUtils.isEmpty(dto.getDescription()))
                 .collect(Collectors.toList()));
     }
-
-    public void checkUniqueName(ConferenceDto conferenceDto, Errors errors) {
-        conferenceDto.setName(conferenceDto.getTitle());
-        conferenceDto.setNameRepository(conferenceRepository);
-        if (checkUniqueName(conferenceDto)) {
-            errors.rejectValue("title", "errorCode", "Конференция с таким именем уже существует");
-        }
-    }
 }

src/main/java/ru/ulstu/name/BaseRepository.java

@@ -0,0 +1,7 @@
+package ru.ulstu.name;
+
+import org.springframework.data.repository.query.Param;
+
+public interface BaseRepository {
+    String findByNameAndNotId(@Param("name") String name, @Param("id") Integer id);
+}

src/main/java/ru/ulstu/name/BaseService.java

@@ -0,0 +1,16 @@
+package ru.ulstu.name;
+
+import org.springframework.stereotype.Service;
+import org.springframework.validation.Errors;
+
+@Service
+public abstract class BaseService {
+
+    public BaseRepository baseRepository;
+
+    public void checkUniqueName(NameContainer nameContainer, Errors errors, Integer id, String checkField, String errorMessage) {
+        if (nameContainer.getName().equals(baseRepository.findByNameAndNotId(nameContainer.getName(), id))) {
+            errors.rejectValue(checkField, "errorCode", errorMessage);
+        }
+    }
+}

src/main/java/ru/ulstu/name/NameContainer.java

@@ -4,16 +4,6 @@ public abstract class NameContainer {
 
     private String name = "";
 
-    private NameRepository nameRepository;
-
-    public NameRepository getNameRepository() {
-        return nameRepository;
-    }
-
-    public void setNameRepository(NameRepository nameRepository) {
-        this.nameRepository = nameRepository;
-    }
-
     public String getName() {
         return name;
     }

src/main/java/ru/ulstu/name/NameRepository.java

@@ -1,7 +0,0 @@
-package ru.ulstu.name;
-
-import org.springframework.data.repository.query.Param;
-
-public interface NameRepository {
-    String findByName(@Param("name") String name);
-}

src/main/java/ru/ulstu/name/NameService.java

@@ -1,11 +0,0 @@
-package ru.ulstu.name;
-
-import org.springframework.stereotype.Service;
-
-@Service
-public abstract class NameService {
-
-    public boolean checkUniqueName(NameContainer nameContainer) {
-        return nameContainer.getName().equals(nameContainer.getNameRepository().findByName(nameContainer.getName()));
-    }
-}