[IDLE-322] 도서 저자, 번역가 반정규화 이후 추천 피드 쿼리 수정

book-service/src/main/java/kr/mybrary/bookservice/book/domain/BookWriteService.java

@@ -1,19 +1,20 @@
 package kr.mybrary.bookservice.book.domain;
 
 import java.util.List;
+import java.util.stream.Collectors;
 import kr.mybrary.bookservice.book.domain.dto.BookDtoMapper;
 import kr.mybrary.bookservice.book.domain.dto.request.BookCreateServiceRequest;
 import kr.mybrary.bookservice.book.domain.exception.BookAlreadyExistsException;
 import kr.mybrary.bookservice.book.persistence.Book;
-import kr.mybrary.bookservice.book.persistence.bookInfo.BookCategory;
 import kr.mybrary.bookservice.book.persistence.bookInfo.Author;
 import kr.mybrary.bookservice.book.persistence.bookInfo.BookAuthor;
+import kr.mybrary.bookservice.book.persistence.bookInfo.BookCategory;
+import kr.mybrary.bookservice.book.persistence.bookInfo.BookTranslator;
+import kr.mybrary.bookservice.book.persistence.bookInfo.Translator;
 import kr.mybrary.bookservice.book.persistence.repository.AuthorRepository;
 import kr.mybrary.bookservice.book.persistence.repository.BookCategoryRepository;
 import kr.mybrary.bookservice.book.persistence.repository.BookRepository;
 import kr.mybrary.bookservice.book.persistence.repository.TranslatorRepository;
-import kr.mybrary.bookservice.book.persistence.bookInfo.BookTranslator;
-import kr.mybrary.bookservice.book.persistence.bookInfo.Translator;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.retry.annotation.Backoff;
@@ -42,22 +43,38 @@ public void create(BookCreateServiceRequest request) {
         checkBookAlreadyRegistered(request);
         Book book = BookDtoMapper.INSTANCE.bookCreateRequestToEntity(request);
 
-        List<BookAuthor> bookAuthors = request.getAuthors().stream()
-                .map(r -> getAuthor(r.getAuthorId(), r.getName()))
-                .map(author -> BookAuthor.builder().author(author).build())
-                .toList();
+        book.addBookAuthor(getBookAuthors(request));
+        book.addBookTranslator(getBookTranslators(request));
+        book.assignCategory(getBookCategory(request.getCategoryId(), request.getCategory()));
+        book.updateAuthorWithComma(joiningAuthorWithComma(request));
+        book.updateTranslatorWithComma(joiningTranslatorWithComma(request));
+
+        bookRepository.save(book);
+        log.info("New Book Saved : {}, {}", book.getTitle(), book.getIsbn13());
+    }
+
+    private String joiningAuthorWithComma(BookCreateServiceRequest request) {
+        return request.getAuthors().stream().map(BookCreateServiceRequest.Author::getName)
+                .collect(Collectors.joining(", "));
+    }
 
-        List<BookTranslator> bookTranslators = request.getTranslators().stream()
+    private String joiningTranslatorWithComma(BookCreateServiceRequest request) {
+        return request.getTranslators().stream().map(BookCreateServiceRequest.Translator::getName)
+                .collect(Collectors.joining(", "));
+    }
+
+    private List<BookTranslator> getBookTranslators(BookCreateServiceRequest request) {
+        return request.getTranslators().stream()
                 .map(r -> getTranslator(r.getTranslatorId(), r.getName()))
                 .map(translator -> BookTranslator.builder().translator(translator).build())
                 .toList();
+    }
 
-        book.addBookAuthor(bookAuthors);
-        book.addBookTranslator(bookTranslators);
-        book.assignCategory(getBookCategory(request.getCategoryId(), request.getCategory()));
-
-        bookRepository.save(book);
-        log.info("New Book Saved : {}, {}", book.getTitle(), book.getIsbn13());
+    private List<BookAuthor> getBookAuthors(BookCreateServiceRequest request) {
+        return request.getAuthors().stream()
+                .map(r -> getAuthor(r.getAuthorId(), r.getName()))
+                .map(author -> BookAuthor.builder().author(author).build())
+                .toList();
     }
 
     private void checkBookAlreadyRegistered(BookCreateServiceRequest request) {

book-service/src/main/java/kr/mybrary/bookservice/book/domain/dto/BookDtoMapper.java

@@ -31,6 +31,8 @@ public interface BookDtoMapper {
     @Mapping(target = "starRating", constant = "0")
     @Mapping(target = "reviewCount", constant = "0")
     @Mapping(target = "recommendationFeedCount", constant = "0")
+    @Mapping(target = "authors", constant = "")
+    @Mapping(target = "translators", constant = "")
     @Mapping(target = "aladinStarRating", source = "starRating")
     @Mapping(target = "aladinReviewCount", source = "reviewCount")
     Book bookCreateRequestToEntity(BookCreateServiceRequest request);

book-service/src/main/java/kr/mybrary/bookservice/book/persistence/Book.java

@@ -11,6 +11,9 @@
 import jakarta.persistence.ManyToOne;
 import jakarta.persistence.OneToMany;
 import jakarta.persistence.Table;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
 import kr.mybrary.bookservice.book.persistence.bookInfo.BookAuthor;
 import kr.mybrary.bookservice.book.persistence.bookInfo.BookCategory;
 import kr.mybrary.bookservice.book.persistence.bookInfo.BookTranslator;
@@ -19,10 +22,6 @@
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Getter;
-
-import java.time.LocalDateTime;
-import java.util.ArrayList;
-import java.util.List;
 import lombok.NoArgsConstructor;
 
 @Entity
@@ -77,6 +76,9 @@ public class Book extends BaseEntity {
     private Double aladinStarRating;
     private Integer aladinReviewCount;
 
+    private String authors;
+    private String translators;
+
     @ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.PERSIST)
     private BookCategory bookCategory;
 
@@ -164,4 +166,12 @@ public void updateWhenDeleteReview(Double originStarRating) {
         this.reviewCount--;
         this.starRating -= originStarRating;
     }
+
+    public void updateAuthorWithComma(String authors) {
+        this.authors = authors;
+    }
+
+    public void updateTranslatorWithComma(String translators) {
+        this.translators = translators;
+    }
 }

book-service/src/main/java/kr/mybrary/bookservice/recommend/persistence/model/RecommendationFeedOfUserViewModel.java

@@ -16,7 +16,7 @@ public class RecommendationFeedOfUserViewModel {
 
     private String content;
     private List<RecommendationTargetOfUserModel> recommendationTargets;
-    private List<RecommendationFeedOfUserBookAuthorModel> bookAuthors;
+    private String bookAuthors;
 
     private Long recommendationFeedId;
     private Long myBookId;
@@ -30,10 +30,6 @@ public void setRecommendationTargets(List<RecommendationTargetOfUserModel> recom
         this.recommendationTargets = recommendationTargetOfUserModels;
     }
 
-    public void setBookAuthors(List<RecommendationFeedOfUserBookAuthorModel> bookAuthors) {
-        this.bookAuthors = bookAuthors;
-    }
-
     @Getter
     @Builder
     @NoArgsConstructor
@@ -44,16 +40,4 @@ public static class RecommendationTargetOfUserModel {
         private Long targetId;
         private String targetName;
     }
-
-    @Getter
-    @Builder
-    @NoArgsConstructor
-    @AllArgsConstructor
-    @EqualsAndHashCode
-    public static class RecommendationFeedOfUserBookAuthorModel {
-
-        private Long authorId;
-        private Integer aid;
-        private String name;
-    }
 }

book-service/src/main/java/kr/mybrary/bookservice/recommend/persistence/model/RecommendationFeedViewAllModel.java

@@ -15,7 +15,7 @@ public class RecommendationFeedViewAllModel {
 
     private String content;
     private List<RecommendationTargetModel> recommendationTargets;
-    private List<BookAuthorModel> bookAuthors;
+    private String bookAuthors;
 
     private String userId;
 
@@ -33,10 +33,6 @@ public void setRecommendationTargets(List<RecommendationTargetModel> recommendat
         this.recommendationTargets = recommendationTargetModels;
     }
 
-    public void setBookAuthors(List<BookAuthorModel> bookAuthorModels) {
-        this.bookAuthors = bookAuthorModels;
-    }
-
     public void setInterested(boolean interested) {
         this.interested = interested;
     }
@@ -51,16 +47,4 @@ public static class RecommendationTargetModel {
         private Long targetId;
         private String targetName;
     }
-
-    @Getter
-    @Builder
-    @NoArgsConstructor
-    @AllArgsConstructor
-    @EqualsAndHashCode
-    public static class BookAuthorModel {
-
-        private Long authorId;
-        private Integer aid;
-        private String name;
-    }
 }

book-service/src/main/java/kr/mybrary/bookservice/recommend/persistence/repository/RecommendationFeedRepositoryCustomImpl.java

@@ -6,8 +6,6 @@
 import static com.querydsl.core.types.dsl.Expressions.set;
 import static kr.mybrary.bookservice.book.persistence.QBook.book;
 import static kr.mybrary.bookservice.book.persistence.QBookInterest.bookInterest;
-import static kr.mybrary.bookservice.book.persistence.bookInfo.QAuthor.author;
-import static kr.mybrary.bookservice.book.persistence.bookInfo.QBookAuthor.bookAuthor;
 import static kr.mybrary.bookservice.mybook.persistence.QMyBook.myBook;
 import static kr.mybrary.bookservice.recommend.persistence.QRecommendationFeed.recommendationFeed;
 import static kr.mybrary.bookservice.recommend.persistence.QRecommendationTarget.recommendationTarget;
@@ -22,10 +20,8 @@
 import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedOfBookViewModel;
 import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedOfBookViewModel.RecommendationTargetOfBookModel;
 import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedOfUserViewModel;
-import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedOfUserViewModel.RecommendationFeedOfUserBookAuthorModel;
 import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedOfUserViewModel.RecommendationTargetOfUserModel;
 import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedViewAllModel;
-import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedViewAllModel.BookAuthorModel;
 import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedViewAllModel.RecommendationTargetModel;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Repository;
@@ -48,7 +44,8 @@ public List<RecommendationFeedViewAllModel> getRecommendationFeedViewAll(Long re
                         book.isbn13.as("isbn13"),
                         book.thumbnailUrl.as("thumbnailUrl"),
                         book.holderCount.as("holderCount"),
-                        book.interestCount.as("interestCount")
+                        book.interestCount.as("interestCount"),
+                        book.authors.as("bookAuthors")
                 ))
                 .from(recommendationFeed)
                 .where(ltRecommendationFeedId(recommendationFeedId))
@@ -62,10 +59,6 @@ public List<RecommendationFeedViewAllModel> getRecommendationFeedViewAll(Long re
                 .map(RecommendationFeedViewAllModel::getRecommendationFeedId)
                 .toList();
 
-        List<Long> bookIds = models.stream()
-                .map(RecommendationFeedViewAllModel::getBookId)
-                .toList();
-
         Map<Long, List<RecommendationTargetModel>> recommendationTargetModelMap = queryFactory
                 .select(
                         fields(RecommendationTargetModel.class,
@@ -80,30 +73,12 @@ public List<RecommendationFeedViewAllModel> getRecommendationFeedViewAll(Long re
                                 recommendationTarget.targetName.as("targetName")
                         ))));
 
-        Map<Long, List<BookAuthorModel>> bookAuthorModelMap = queryFactory
-                .select(
-                        fields(BookAuthorModel.class,
-                                author.id.as("authorId"),
-                                author.aid.as("aid"),
-                                author.name.as("name")
-                        )
-                ).from(bookAuthor)
-                .join(bookAuthor.author, author).on(bookAuthor.author.id.eq(author.id))
-                .where(bookAuthor.book.id.in(bookIds))
-                .transform(groupBy(bookAuthor.book.id)
-                        .as(list(fields(BookAuthorModel.class,
-                                author.id.as("authorId"),
-                                author.aid.as("aid"),
-                                author.name.as("name")
-                        ))));
-
         Set<Long> interestedBookIdSet = queryFactory.select(book.id).from(bookInterest)
                 .where(bookInterest.userId.eq(userId))
                 .transform(groupBy(book.id).as(set(book.id))).keySet();
 
         models.forEach(model -> {
             model.setRecommendationTargets(recommendationTargetModelMap.getOrDefault(model.getRecommendationFeedId(), List.of()));
-            model.setBookAuthors(bookAuthorModelMap.getOrDefault(model.getBookId(), List.of()));
             model.setInterested(interestedBookIdSet.contains(model.getBookId()));
         });
 
@@ -137,7 +112,8 @@ public List<RecommendationFeedOfUserViewModel> getRecommendationFeedViewOfUserMo
                         book.id.as("bookId"),
                         book.title.as("title"),
                         book.isbn13.as("isbn13"),
-                        book.thumbnailUrl.as("thumbnailUrl")
+                        book.thumbnailUrl.as("thumbnailUrl"),
+                        book.authors.as("bookAuthors")
                 ))
                 .from(recommendationFeed)
                 .where(recommendationFeed.userId.eq(userId))
@@ -150,10 +126,6 @@ public List<RecommendationFeedOfUserViewModel> getRecommendationFeedViewOfUserMo
                 .map(RecommendationFeedOfUserViewModel::getRecommendationFeedId)
                 .toList();
 
-        List<Long> bookIds = models.stream()
-                .map(RecommendationFeedOfUserViewModel::getBookId)
-                .toList();
-
         Map<Long, List<RecommendationTargetOfUserModel>> recommendationTargetModelMap = queryFactory
                 .select(
                         fields(RecommendationTargetOfUserModel.class,
@@ -168,26 +140,8 @@ public List<RecommendationFeedOfUserViewModel> getRecommendationFeedViewOfUserMo
                                 recommendationTarget.targetName.as("targetName")
                         ))));
 
-        Map<Long, List<RecommendationFeedOfUserBookAuthorModel>> bookAuthorModelMap = queryFactory
-                .select(
-                        fields(RecommendationFeedOfUserBookAuthorModel.class,
-                                author.id.as("authorId"),
-                                author.aid.as("aid"),
-                                author.name.as("name")
-                        )
-                ).from(bookAuthor)
-                .join(bookAuthor.author, author).on(bookAuthor.author.id.eq(author.id))
-                .where(bookAuthor.book.id.in(bookIds))
-                .transform(groupBy(bookAuthor.book.id)
-                        .as(list(fields(RecommendationFeedOfUserBookAuthorModel.class,
-                                author.id.as("authorId"),
-                                author.aid.as("aid"),
-                                author.name.as("name")
-                        ))));
-
         models.forEach(model -> {
             model.setRecommendationTargets(recommendationTargetModelMap.getOrDefault(model.getRecommendationFeedId(), List.of()));
-            model.setBookAuthors(bookAuthorModelMap.getOrDefault(model.getBookId(), List.of()));
         });
 
         return models;

book-service/src/main/java/kr/mybrary/bookservice/recommend/presentation/dto/response/RecommendationFeedOfUserViewResponse.java

@@ -1,9 +1,9 @@
 package kr.mybrary.bookservice.recommend.presentation.dto.response;
 
+import java.util.Arrays;
 import java.util.List;
 import kr.mybrary.bookservice.global.util.DateUtils;
 import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedOfUserViewModel;
-import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedOfUserViewModel.RecommendationFeedOfUserBookAuthorModel;
 import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedOfUserViewModel.RecommendationTargetOfUserModel;
 import lombok.Builder;
 import lombok.Getter;
@@ -28,8 +28,7 @@ public static RecommendationFeedOfUserViewResponse of(List<RecommendationFeedOfU
                                 .createdAt(DateUtils.toDotFormatYYYYMMDD(recommendationFeed.getCreatedAt()))
                                 .recommendationTargetNames(recommendationFeed.getRecommendationTargets().stream()
                                         .map(RecommendationTargetOfUserModel::getTargetName).toList())
-                                .authors(recommendationFeed.getBookAuthors().stream().map(
-                                        RecommendationFeedOfUserBookAuthorModel::getName).toList())
+                                .authors(getAuthorList(recommendationFeed))
                                 .build()).toList()).build();
     }
 
@@ -49,4 +48,13 @@ public static class RecommendationFeedElement {
         private List<String> recommendationTargetNames;
         private List<String> authors;
     }
+
+    private static List<String> getAuthorList(RecommendationFeedOfUserViewModel recommendationFeed) {
+        if (recommendationFeed.getBookAuthors() == null) {
+            return List.of();
+        }
+
+        return Arrays.stream(recommendationFeed.getBookAuthors().split(", "))
+                .toList();
+    }
 }

book-service/src/main/java/kr/mybrary/bookservice/recommend/presentation/dto/response/RecommendationFeedViewAllResponse.java

@@ -1,10 +1,10 @@
 package kr.mybrary.bookservice.recommend.presentation.dto.response;
 
+import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 import kr.mybrary.bookservice.client.user.dto.response.UserInfoServiceResponse.UserInfo;
 import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedViewAllModel;
-import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedViewAllModel.BookAuthorModel;
 import kr.mybrary.bookservice.recommend.persistence.model.RecommendationFeedViewAllModel.RecommendationTargetModel;
 import lombok.Builder;
 import lombok.Getter;
@@ -59,9 +59,7 @@ public static RecommendationFeedViewAllResponse of(List<RecommendationFeedViewAl
                                 .title(recommendationFeed.getTitle())
                                 .thumbnailUrl(recommendationFeed.getThumbnailUrl())
                                 .isbn13(recommendationFeed.getIsbn13())
-                                .authors(recommendationFeed.getBookAuthors().stream()
-                                        .map(BookAuthorModel::getName)
-                                        .toList())
+                                .authors(getAuthorList(recommendationFeed))
                                 .holderCount(recommendationFeed.getHolderCount())
                                 .interestCount(recommendationFeed.getInterestCount())
                                 .interested(recommendationFeed.getInterested())
@@ -71,4 +69,13 @@ public static RecommendationFeedViewAllResponse of(List<RecommendationFeedViewAl
                 .lastRecommendationFeedId(lastRecommendationFeedId)
                 .build();
     }
+
+    private static List<String> getAuthorList(RecommendationFeedViewAllModel recommendationFeed) {
+        if (recommendationFeed.getBookAuthors() == null) {
+            return List.of();
+        }
+
+        return Arrays.stream(recommendationFeed.getBookAuthors().split(", "))
+                .toList();
+    }
 }