refactor: member 도매인 내 findById가 Entity가 아닌 DTO를 반혼하도록 수정

src/main/kotlin/roomescape/member/business/MemberService.kt

@@ -5,7 +5,6 @@ import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
 import roomescape.member.implement.MemberFinder
 import roomescape.member.implement.MemberWriter
-import roomescape.member.infrastructure.persistence.MemberEntity
 import roomescape.member.infrastructure.persistence.Role
 import roomescape.member.web.*
 
@@ -26,11 +25,14 @@ class MemberService(
     }
 
     @Transactional(readOnly = true)
-    fun findById(memberId: Long): MemberEntity {
+    fun findSummaryById(id: Long): MemberSummaryRetrieveResponse {
-        log.debug { "[MemberService.findById] 시작" }
+        log.debug { "[MemberService.findSummaryById] 시작" }
 
-        return memberFinder.findById(memberId)
+        return memberFinder.findById(id)
-            .also { log.info { "[MemberService.findById] 완료. memberId=${memberId}, email=${it.email}" } }
+            .toSummaryRetrieveResponse()
+            .also {
+                log.info { "[MemberService.findSummaryById] 완료. memberId=${id}, email=${it.email}" }
+            }
     }
 
     @Transactional

src/main/kotlin/roomescape/member/web/MemberDTO.kt

@@ -2,6 +2,7 @@ package roomescape.member.web
 
 import io.swagger.v3.oas.annotations.media.Schema
 import roomescape.member.infrastructure.persistence.MemberEntity
+import roomescape.member.infrastructure.persistence.Role
 
 fun MemberEntity.toRetrieveResponse(): MemberRetrieveResponse = MemberRetrieveResponse(
     id = id!!,
@@ -39,3 +40,17 @@ fun MemberEntity.toSignupResponse(): SignupResponse = SignupResponse(
     id = this.id!!,
     name = this.name
 )
+
+data class MemberSummaryRetrieveResponse(
+    val id: Long,
+    val name: String,
+    val email: String,
+    val role: Role
+)
+
+fun MemberEntity.toSummaryRetrieveResponse() = MemberSummaryRetrieveResponse(
+    id = this.id!!,
+    name = this.name,
+    email = this.email,
+    role = this.role
+)