src/main/kotlin/kr/co/vividnext/sodalive/api/home/HomeService.kt

@@ -14,7 +14,6 @@ import kr.co.vividnext.sodalive.content.series.ContentSeriesService
 import kr.co.vividnext.sodalive.content.series.GetSeriesListResponse
 import kr.co.vividnext.sodalive.content.series.translation.SeriesTranslationRepository
 import kr.co.vividnext.sodalive.content.theme.AudioContentThemeService
-import kr.co.vividnext.sodalive.content.translation.ContentTranslationRepository
 import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesPublishedDaysOfWeek
 import kr.co.vividnext.sodalive.event.GetEventResponse
 import kr.co.vividnext.sodalive.explorer.ExplorerQueryRepository
@@ -50,7 +49,6 @@ class HomeService(
     private val rankingRepository: RankingRepository,
     private val explorerQueryRepository: ExplorerQueryRepository,
 
-    private val contentTranslationRepository: ContentTranslationRepository,
     private val aiCharacterTranslationRepository: AiCharacterTranslationRepository,
     private val seriesTranslationRepository: SeriesTranslationRepository,
 
@@ -122,8 +120,6 @@ class HomeService(
             isAdult = isAdult
         )
 
-        val translatedLatestContentList = getTranslatedContentList(contentList = latestContentList)
-
         val eventBannerList = GetEventResponse(
             totalCount = 0,
             eventList = emptyList()
@@ -177,64 +173,12 @@ class HomeService(
             sort = ContentRankingSortType.REVENUE
         )
 
-        val contentRankingContentIds = contentRanking.map { it.contentId }
-        val translatedContentRanking = if (contentRankingContentIds.isNotEmpty()) {
-            val translations = contentTranslationRepository
-                .findByContentIdInAndLocale(contentIds = contentRankingContentIds, locale = langContext.lang.code)
-                .associateBy { it.contentId }
-
-            contentRanking.map { item ->
-                val translatedTitle = translations[item.contentId]?.renderedPayload?.title
-                if (translatedTitle.isNullOrBlank()) {
-                    item
-                } else {
-                    item.copy(title = translatedTitle)
-                }
-            }
-        } else {
-            contentRanking
-        }
-
         val recommendChannelList = recommendChannelService.getRecommendChannel(
             memberId = memberId,
             isAdult = isAdult,
             contentType = contentType
         )
 
-        /**
-         * recommendChannelList의 콘텐츠 번역 데이터 조회
-         *
-         * languageCode != null
-         * contentTranslationRepository를 이용해 번역 콘텐츠를 조회한다. - contentId, locale
-         *
-         * 한 번에 조회하고 contentId를 매핑하여 recommendChannelList의 콘텐츠 title을 번역 데이터로 변경한다
-         */
-        val channelContentIds = recommendChannelList
-            .flatMap { it.contentList }
-            .map { it.contentId }
-            .distinct()
-
-        val translatedRecommendChannelList = if (channelContentIds.isNotEmpty()) {
-            val translations = contentTranslationRepository
-                .findByContentIdInAndLocale(contentIds = channelContentIds, locale = langContext.lang.code)
-                .associateBy { it.contentId }
-
-            recommendChannelList.map { channel ->
-                val translatedContentList = channel.contentList.map { item ->
-                    val translatedTitle = translations[item.contentId]?.renderedPayload?.title
-                    if (translatedTitle.isNullOrBlank()) {
-                        item
-                    } else {
-                        item.copy(title = translatedTitle)
-                    }
-                }
-
-                channel.copy(contentList = translatedContentList)
-            }
-        } else {
-            recommendChannelList
-        }
-
         val freeContentList = getRandomizedContentList(
             memberId = memberId,
             isAdult = isAdult,
@@ -248,8 +192,6 @@ class HomeService(
             isPointAvailableOnly = false
         )
 
-        val translatedFreeContentList = getTranslatedContentList(contentList = freeContentList)
-
         // 포인트 사용가능 콘텐츠 리스트 - 랜덤으로 가져오기 (DB에서 isPointAvailable 조건 적용)
         val pointAvailableContentList = getRandomizedContentList(
             memberId = memberId,
@@ -260,28 +202,26 @@ class HomeService(
             isPointAvailableOnly = true
         )
 
-        val translatedPointAvailableContentList = getTranslatedContentList(contentList = pointAvailableContentList)
-
         val excludeContentIds = (
-            translatedLatestContentList.map { it.contentId } +
+            latestContentList.map { it.contentId } +
-                translatedContentRanking.map { it.contentId }
+                contentRanking.map { it.contentId }
             ).distinct()
 
         return GetHomeResponse(
             liveList = liveList,
             creatorRanking = creatorRanking,
             latestContentThemeList = latestContentThemeList,
-            latestContentList = translatedLatestContentList,
+            latestContentList = latestContentList,
             bannerList = bannerList,
             eventBannerList = eventBannerList,
             originalAudioDramaList = translatedOriginalAudioDramaList,
             auditionList = auditionList,
             dayOfWeekSeriesList = translatedDayOfWeekSeriesList,
             popularCharacters = translatedPopularCharacters,
-            contentRanking = translatedContentRanking,
+            contentRanking = contentRanking,
-            recommendChannelList = translatedRecommendChannelList,
+            recommendChannelList = recommendChannelList,
-            freeContentList = translatedFreeContentList,
+            freeContentList = freeContentList,
-            pointAvailableContentList = translatedPointAvailableContentList,
+            pointAvailableContentList = pointAvailableContentList,
             recommendContentList = getRecommendContentList(
                 isAdultContentVisible = isAdultContentVisible,
                 contentType = contentType,
@@ -311,15 +251,13 @@ class HomeService(
             listOf(theme)
         }
 
-        val contentList = contentService.getLatestContentByTheme(
+        return contentService.getLatestContentByTheme(
             memberId = memberId,
             theme = themeList,
             contentType = contentType,
             isFree = false,
             isAdult = isAdult
         )
-
-        return getTranslatedContentList(contentList = contentList)
     }
 
     fun getDayOfWeekSeriesList(
@@ -445,7 +383,7 @@ class HomeService(
             }
         }
 
-        return getTranslatedContentList(contentList = result.take(RECOMMEND_TARGET_SIZE).shuffled())
+        return result.take(RECOMMEND_TARGET_SIZE).shuffled()
     }
 
     private fun pickByTimeDecay(
@@ -542,43 +480,7 @@ class HomeService(
             }
         }
 
-        return getTranslatedContentList(contentList = result.take(targetSize).shuffled())
+        return result.take(targetSize).shuffled()
-    }
-
-    /**
-     * 콘텐츠 리스트의 제목을 현재 언어(locale)에 맞춰 일괄 번역한다.
-     *
-     * 처리 절차:
-     * - 입력된 콘텐츠들의 contentId 집합을 만들고, 요청 언어 코드(langContext.lang.code)로
-     *   contentTranslationRepository에서 번역 데이터를 한 번에 조회한다.
-     * - 각 항목에 대해 번역된 제목이 존재하고 비어있지 않으면 title만 번역 값으로 교체한다.
-     * - 번역이 없거나 공백이면 원본 항목을 그대로 반환한다.
-     *
-     * 성능:
-     * - N건의 항목을 1회의 조회로 해결하기 위해 IN 쿼리를 사용한다.
-     *
-     * @param contentList 번역 대상 AudioContentMainItem 목록
-     * @return 제목이 가능한 항목은 번역된 목록(불변 사본), 그 외는 원본 항목 유지
-     */
-    private fun getTranslatedContentList(contentList: List<AudioContentMainItem>): List<AudioContentMainItem> {
-        val contentIds = contentList.map { it.contentId }
-
-        return if (contentIds.isNotEmpty()) {
-            val translations = contentTranslationRepository
-                .findByContentIdInAndLocale(contentIds = contentIds, locale = langContext.lang.code)
-                .associateBy { it.contentId }
-
-            contentList.map { item ->
-                val translatedTitle = translations[item.contentId]?.renderedPayload?.title
-                if (translatedTitle.isNullOrBlank()) {
-                    item
-                } else {
-                    item.copy(title = translatedTitle)
-                }
-            }
-        } else {
-            contentList
-        }
     }
 
     /**

src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContentRepository.kt

@@ -25,6 +25,7 @@ import kr.co.vividnext.sodalive.content.pin.QPinContent.pinContent
 import kr.co.vividnext.sodalive.content.playlist.AudioContentPlaylistContent
 import kr.co.vividnext.sodalive.content.playlist.QAudioContentPlaylistContent
 import kr.co.vividnext.sodalive.content.theme.QAudioContentTheme.audioContentTheme
+import kr.co.vividnext.sodalive.content.translation.QContentTranslation.contentTranslation
 import kr.co.vividnext.sodalive.creator.admin.content.series.QSeries.series
 import kr.co.vividnext.sodalive.creator.admin.content.series.QSeriesContent.seriesContent
 import kr.co.vividnext.sodalive.event.QEvent.event
@@ -188,7 +189,8 @@ interface AudioContentQueryRepository {
         isAdult: Boolean,
         orderByRandom: Boolean = false,
         isPointAvailableOnly: Boolean = false,
-        excludeContentIds: List<Long> = emptyList()
+        excludeContentIds: List<Long> = emptyList(),
+        locale: String? = null
     ): List<AudioContentMainItem>
 
     fun findContentByCurationId(
@@ -1331,7 +1333,8 @@ class AudioContentQueryRepositoryImpl(
         isAdult: Boolean,
         orderByRandom: Boolean,
         isPointAvailableOnly: Boolean,
-        excludeContentIds: List<Long>
+        excludeContentIds: List<Long>,
+        locale: String?
     ): List<AudioContentMainItem> {
         val blockMemberCondition = if (memberId != null) {
             blockMember.member.id.eq(member.id)
@@ -1382,12 +1385,27 @@ class AudioContentQueryRepositoryImpl(
             where = where.and(audioContent.id.notIn(excludeContentIds))
         }
 
+        val titleExpression = if (locale != null) {
+            val translatedTitle = Expressions.stringTemplate(
+                "JSON_EXTRACT({0}, '$.title')",
+                contentTranslation.renderedPayload
+            )
+            val coalesceTitle = Expressions.stringTemplate(
+                "COALESCE(NULLIF({0}, ''), {1})",
+                translatedTitle,
+                audioContent.title
+            )
+            coalesceTitle
+        } else {
+            audioContent.title
+        }
+
         var select = queryFactory
             .select(
                 QAudioContentMainItem(
                     audioContent.id,
                     member.id,
-                    audioContent.title,
+                    titleExpression,
                     audioContent.coverImage.prepend("/").prepend(imageHost),
                     member.nickname,
                     audioContent.isPointAvailable
@@ -1397,6 +1415,11 @@ class AudioContentQueryRepositoryImpl(
             .innerJoin(audioContent.member, member)
             .innerJoin(audioContent.theme, audioContentTheme)
 
+        if (locale != null) {
+            select = select.leftJoin(contentTranslation)
+                .on(contentTranslation.contentId.eq(audioContent.id).and(contentTranslation.locale.eq(locale)))
+        }
+
         if (memberId != null) {
             where = where.and(blockMember.id.isNull)
             select = select.leftJoin(blockMember).on(blockMemberCondition)

src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContentService.kt

@@ -1222,7 +1222,7 @@ class AudioContentService(
             isPointAvailableOnly = isPointAvailableOnly
         )
 
-        val contentList = repository.getLatestContentByTheme(
+        return repository.getLatestContentByTheme(
             memberId = memberId,
             theme = normalizedTheme,
             contentType = contentType,
@@ -1233,26 +1233,9 @@ class AudioContentService(
             isAdult = isAdult,
             orderByRandom = orderByRandom,
             isPointAvailableOnly = isPointAvailableOnly,
-            excludeContentIds = excludeContentIds
+            excludeContentIds = excludeContentIds,
+            locale = langContext.lang.code
         )
-
-        val contentIds = contentList.map { it.contentId }
-        return if (contentIds.isNotEmpty()) {
-            val translations = contentTranslationRepository
-                .findByContentIdInAndLocale(contentIds = contentIds, locale = langContext.lang.code)
-                .associateBy { it.contentId }
-
-            contentList.map { item ->
-                val translatedTitle = translations[item.contentId]?.renderedPayload?.title
-                if (translatedTitle.isNullOrBlank()) {
-                    item
-                } else {
-                    item.copy(title = translatedTitle)
-                }
-            }
-        } else {
-            contentList
-        }
     }
 
     /**

src/main/kotlin/kr/co/vividnext/sodalive/query/recommend/RecommendChannelQueryRepository.kt

@@ -6,6 +6,7 @@ import kr.co.vividnext.sodalive.content.ContentType
 import kr.co.vividnext.sodalive.content.QAudioContent.audioContent
 import kr.co.vividnext.sodalive.content.comment.QAudioContentComment.audioContentComment
 import kr.co.vividnext.sodalive.content.like.QAudioContentLike.audioContentLike
+import kr.co.vividnext.sodalive.content.translation.QContentTranslation.contentTranslation
 import kr.co.vividnext.sodalive.member.MemberRole
 import kr.co.vividnext.sodalive.member.QMember.member
 import kr.co.vividnext.sodalive.member.auth.QAuth.auth
@@ -83,7 +84,8 @@ class RecommendChannelQueryRepository(
     fun getContentsByCreatorIdLikeDesc(
         creatorId: Long,
         memberId: Long?,
-        isAdult: Boolean
+        isAdult: Boolean,
+        locale: String? = null
     ): List<RecommendChannelContentItem> {
         val blockMemberCondition = if (memberId != null) {
             blockMember.member.id.eq(audioContent.member.id)
@@ -99,11 +101,26 @@ class RecommendChannelQueryRepository(
             where = where.and(audioContent.isAdult.isFalse)
         }
 
+        val titleExpression = if (locale != null) {
+            val translatedTitle = Expressions.stringTemplate(
+                "JSON_EXTRACT({0}, '$.title')",
+                contentTranslation.renderedPayload
+            )
+            val coalesceTitle = Expressions.stringTemplate(
+                "COALESCE(NULLIF({0}, ''), {1})",
+                translatedTitle,
+                audioContent.title
+            )
+            coalesceTitle
+        } else {
+            audioContent.title
+        }
+
         var select = queryFactory
             .select(
                 QRecommendChannelContentItem(
                     audioContent.id,
-                    audioContent.title,
+                    titleExpression,
                     audioContent.coverImage.prepend("/").prepend(imageHost),
                     audioContentLike.id.countDistinct(),
                     audioContentComment.id.countDistinct()
@@ -121,6 +138,14 @@ class RecommendChannelQueryRepository(
                     .and(audioContentComment.isActive.isTrue)
             )
 
+        if (locale != null) {
+            select = select.leftJoin(contentTranslation)
+                .on(
+                    contentTranslation.contentId.eq(audioContent.id)
+                        .and(contentTranslation.locale.eq(locale))
+                )
+        }
+
         if (memberId != null) {
             where = where.and(blockMember.id.isNull)
             select = select.leftJoin(blockMember).on(blockMemberCondition)

src/main/kotlin/kr/co/vividnext/sodalive/query/recommend/RecommendChannelQueryService.kt

@@ -1,13 +1,17 @@
 package kr.co.vividnext.sodalive.query.recommend
 
 import kr.co.vividnext.sodalive.content.ContentType
+import kr.co.vividnext.sodalive.i18n.LangContext
 import org.springframework.cache.annotation.Cacheable
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
 
 @Service
 @Transactional(readOnly = true)
-class RecommendChannelQueryService(private val repository: RecommendChannelQueryRepository) {
+class RecommendChannelQueryService(
+    private val repository: RecommendChannelQueryRepository,
+    private val langContext: LangContext
+) {
     @Cacheable(
         cacheNames = ["default"],
         key = "'recommendChannel:' + (#memberId ?: 'guest') + ':' + #isAdult + ':' + #contentType"
@@ -27,7 +31,8 @@ class RecommendChannelQueryService(private val repository: RecommendChannelQuery
             it.contentList = repository.getContentsByCreatorIdLikeDesc(
                 creatorId = it.channelId,
                 memberId = memberId,
-                isAdult = isAdult
+                isAdult = isAdult,
+                locale = langContext.lang.code
             )
 
             it

src/main/kotlin/kr/co/vividnext/sodalive/rank/RankingRepository.kt

@@ -69,7 +69,8 @@ class RankingRepository(
         offset: Long,
         limit: Long,
         sortType: String,
-        theme: String = ""
+        theme: String = "",
+        locale: String? = null
     ): List<GetAudioContentRankingItem> {
         val blockMemberCondition = if (memberId != null) {
             blockMember.member.id.eq(member.id)
@@ -79,6 +80,8 @@ class RankingRepository(
             null
         }
 
+        val contentTranslation = kr.co.vividnext.sodalive.content.translation.QContentTranslation.contentTranslation
+
         var where = audioContent.isActive.isTrue
             .and(audioContent.member.isActive.isTrue)
             .and(audioContent.member.isNotNull)
@@ -109,11 +112,26 @@ class RankingRepository(
             where = where.and(audioContentTheme.theme.eq(theme))
         }
 
+        val titleExpression = if (locale != null) {
+            val translatedTitle = Expressions.stringTemplate(
+                "JSON_EXTRACT({0}, '$.title')",
+                contentTranslation.renderedPayload
+            )
+            val coalesceTitle = Expressions.stringTemplate(
+                "COALESCE(NULLIF({0}, ''), {1})",
+                translatedTitle,
+                audioContent.title
+            )
+            coalesceTitle
+        } else {
+            audioContent.title
+        }
+
         var select = queryFactory
             .select(
                 QGetAudioContentRankingItem(
                     audioContent.id,
-                    audioContent.title,
+                    titleExpression,
                     audioContent.coverImage.prepend("/").prepend(imageHost),
                     audioContentTheme.theme,
                     audioContent.price,
@@ -167,6 +185,11 @@ class RankingRepository(
             }
         }
 
+        if (locale != null) {
+            select = select.leftJoin(contentTranslation)
+                .on(contentTranslation.contentId.eq(audioContent.id).and(contentTranslation.locale.eq(locale)))
+        }
+
         if (memberId != null) {
             where = where.and(blockMember.id.isNull)
             select = select.leftJoin(blockMember).on(blockMemberCondition)

src/main/kotlin/kr/co/vividnext/sodalive/rank/RankingService.kt

@@ -9,6 +9,7 @@ import kr.co.vividnext.sodalive.creator.admin.content.series.Series
 import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesPublishedDaysOfWeek
 import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesState
 import kr.co.vividnext.sodalive.explorer.GetExplorerSectionResponse
+import kr.co.vividnext.sodalive.i18n.LangContext
 import org.springframework.beans.factory.annotation.Value
 import org.springframework.stereotype.Service
 import java.time.LocalDateTime
@@ -17,6 +18,7 @@ import java.time.LocalDateTime
 class RankingService(
     private val repository: RankingRepository,
     private val seriesContentRepository: ContentSeriesContentRepository,
+    private val langContext: LangContext,
 
     @Value("\${cloud.aws.cloud-front.host}")
     private val imageHost: String
@@ -59,7 +61,8 @@ class RankingService(
                 offset = offset,
                 limit = limit,
                 sortType = sortType,
-                theme = theme
+                theme = theme,
+                locale = langContext.lang.code
             )
             loopCount++
         } while (contentList.size < 5 && loopCount < 5)