refactor(center): center 아이디로 센터명 조회하는 메서드 Optional로 변경

- BadRequestException -> NoSuchElementException

Author: ayoung-dev

src/main/java/com/somemore/center/repository/NEWCenterRepository.java

@@ -25,6 +25,6 @@ default boolean doesNotExistById(UUID id) {
 
     List<CenterOverviewInfo> findOverviewInfosByIds(List<UUID> ids);
 
-    String findNameById(UUID id);
+    Optional<String> findNameById(UUID id);
 
 }

src/main/java/com/somemore/center/repository/NEWCenterRepositoryImpl.java

@@ -103,9 +103,8 @@ public List<CenterOverviewInfo> findOverviewInfosByIds(List<UUID> ids) {
     }
 
     @Override
-    public String findNameById(UUID id) {
-        return findDynamicFieldByCenterId(id, userCommonAttribute.name)
-                .orElse(null);
+    public Optional<String> findNameById(UUID id) {
+        return findDynamicFieldByCenterId(id, userCommonAttribute.name);
     }
 
     private static BooleanExpression idIn(List<UUID> ids) {

src/main/java/com/somemore/center/service/NEWCenterQueryService.java

@@ -77,13 +77,8 @@ public List<CenterOverviewInfo> getCenterOverviewsByIds(List<UUID> ids) {
 
     @Override
     public String getNameById(UUID id) {
-        String name = centerRepository.findNameById(id);
-
-        if (name == null || name.isBlank()) {
-            throw new BadRequestException(NOT_EXISTS_CENTER);
-        }
-
-        return name;
+        return centerRepository.findNameById(id)
+                .orElseThrow(
+                        () -> new NoSuchElementException(ExceptionMessage.NOT_EXISTS_CENTER));
     }
-
 }