refactor: dto 클래스를 레코드로 변경

backend/baton/src/main/java/touch/baton/domain/runnerpost/repository/RunnerPostReadRepository.java

@@ -21,8 +21,8 @@ default ApplicantCountMappingDto findApplicantCountMappingByRunnerPostIds(final
         final Map<Long, Long> applicantCountMapping = countApplicantsByRunnerPostIds(runnerPostIds)
                 .stream()
                 .collect(Collectors.toMap(
-                        applicantCountDto -> applicantCountDto.getRunnerPostId(),
-                        applicantCountDto -> applicantCountDto.getApplicantCount()
+                        ApplicantCountDto::runnerPostId,
+                        ApplicantCountDto::applicantCount
                 ));
 
         return new ApplicantCountMappingDto(applicantCountMapping);
@@ -34,7 +34,6 @@ default ApplicantCountMappingDto findApplicantCountMappingByRunnerPostIds(final
             left outer join fetch SupporterRunnerPost srp on srp.runnerPost.id = rp.id
             where rp.id in :runnerPostIds
             group by rp.id
-            order by rp.id
             """)
     List<ApplicantCountDto> countApplicantsByRunnerPostIds(@Param("runnerPostIds") final List<Long> runnerPostIds);
 

backend/baton/src/main/java/touch/baton/domain/runnerpost/repository/dto/ApplicantCountDto.java

@@ -1,39 +1,4 @@
 package touch.baton.domain.runnerpost.repository.dto;
 
-import java.util.Objects;
-
-public class ApplicantCountDto {
-
-    private Long runnerPostId;
-
-    private Long applicantCount;
-
-    public ApplicantCountDto() {
-    }
-
-    public ApplicantCountDto(final Long runnerPostId, final Long applicantCount) {
-        this.runnerPostId = runnerPostId;
-        this.applicantCount = (long) applicantCount;
-    }
-
-    public Long getRunnerPostId() {
-        return runnerPostId;
-    }
-
-    public Long getApplicantCount() {
-        return applicantCount;
-    }
-
-    @Override
-    public boolean equals(final Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        final ApplicantCountDto that = (ApplicantCountDto) o;
-        return applicantCount == that.applicantCount && Objects.equals(runnerPostId, that.runnerPostId);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(runnerPostId, applicantCount);
-    }
+public record ApplicantCountDto(Long runnerPostId, Long applicantCount) {
 }

backend/baton/src/main/java/touch/baton/domain/runnerpost/repository/dto/ApplicantCountMappingDto.java

@@ -1,34 +1,10 @@
 package touch.baton.domain.runnerpost.repository.dto;
 
 import java.util.Map;
-import java.util.Objects;
 
-public class ApplicantCountMappingDto {
-
-    private final Map<Long, Long> applicantCounts;
-
-    public ApplicantCountMappingDto(final Map<Long, Long> applicantCounts) {
-        this.applicantCounts = applicantCounts;
-    }
+public record ApplicantCountMappingDto(Map<Long, Long> applicantCounts) {
 
     public Long getApplicantCountByRunnerPostId(final Long runnerPostId) {
         return applicantCounts.get(runnerPostId);
     }
-
-    public Map<Long, Long> getApplicantCounts() {
-        return applicantCounts;
-    }
-
-    @Override
-    public boolean equals(final Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        final ApplicantCountMappingDto that = (ApplicantCountMappingDto) o;
-        return Objects.equals(applicantCounts, that.applicantCounts);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(applicantCounts);
-    }
 }

backend/baton/src/test/java/touch/baton/assure/repository/TestRunnerPostReadRepository.java

@@ -13,6 +13,6 @@ default Long countApplicantByRunnerPostId(final Long runnerPostId) {
             throw new IllegalArgumentException("테스트에서 러너 게시글 식별자값으로 서포터 지원자 수 조회에 실패하였습니다.");
         }
 
-        return foundApplicants.get(0).getApplicantCount();
+        return foundApplicants.get(0).applicantCount();
     }
 }