[refactor] Post 관련 상속 전략 변경

src/main/java/konkuk/thip/feed/adapter/out/jpa/FeedJpaEntity.java

@@ -16,20 +16,20 @@
 import java.util.List;
 
 @Entity
-@Table(name = "feeds")
+//@Table(name = "feeds")
 @DiscriminatorValue("FEED")
 @Getter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class FeedJpaEntity extends PostJpaEntity {
 
-    @Column(name = "is_public", nullable = false)
+    @Column(name = "is_public")
     private Boolean isPublic;
 
-    @Column(name = "report_count", nullable = false)
+    @Column(name = "report_count")
     private int reportCount = 0;
 
     @ManyToOne(fetch = FetchType.LAZY)
-    @JoinColumn(name = "book_id", nullable = false)
+    @JoinColumn(name = "book_id")
     private BookJpaEntity bookJpaEntity;
 
     @OneToMany(mappedBy = "postJpaEntity", cascade = CascadeType.ALL, orphanRemoval = true)

src/main/java/konkuk/thip/post/adapter/out/jpa/PostJpaEntity.java

@@ -18,7 +18,7 @@
 @Entity
 @Table(name = "posts")
 @Getter
-@Inheritance(strategy = InheritanceType.JOINED)
+@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
 @DiscriminatorColumn(name = "dtype")
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 public abstract class PostJpaEntity extends BaseJpaEntity {

src/main/java/konkuk/thip/roompost/adapter/out/jpa/RecordJpaEntity.java

@@ -12,16 +12,17 @@
 import lombok.NoArgsConstructor;
 
 @Entity
-@Table(name = "records")
+//@Table(name = "records")
 @DiscriminatorValue("RECORD")
 @Getter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class RecordJpaEntity extends PostJpaEntity {
 
+    @Column(name = "page")
     private Integer page;
 
-    @Column(name = "is_overview",nullable = false)
-    private boolean isOverview;
+    @Column(name = "is_overview")
+    private Boolean isOverview;
 
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "room_id")

src/main/java/konkuk/thip/roompost/adapter/out/jpa/VoteJpaEntity.java

@@ -12,15 +12,16 @@
 import lombok.NoArgsConstructor;
 
 @Entity
-@Table(name = "votes")
+//@Table(name = "votes")
 @DiscriminatorValue("VOTE")
 @Getter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class VoteJpaEntity extends PostJpaEntity {
 
+    @Column(name = "page")
     private Integer page;
 
-    @Column(name = "is_overview",nullable = false)
+    @Column(name = "is_overview")
     private boolean isOverview;
 
     @ManyToOne(fetch = FetchType.LAZY)

src/main/java/konkuk/thip/roompost/adapter/out/mapper/RecordMapper.java

@@ -27,7 +27,7 @@ public Record toDomainEntity(RecordJpaEntity recordJpaEntity) {
                 .content(recordJpaEntity.getContent())
                 .creatorId(recordJpaEntity.getUserJpaEntity().getUserId())
                 .page(recordJpaEntity.getPage())
-                .isOverview(recordJpaEntity.isOverview())
+                .isOverview(recordJpaEntity.getIsOverview())
                 .roomId(recordJpaEntity.getRoomJpaEntity().getRoomId())
                 .likeCount(recordJpaEntity.getLikeCount())
                 .commentCount(recordJpaEntity.getCommentCount())

src/main/java/konkuk/thip/roompost/adapter/out/persistence/repository/record/RecordQueryRepositoryImpl.java

@@ -20,6 +20,7 @@
 import java.time.LocalDateTime;
 import java.util.List;
 
+import static com.querydsl.jpa.JPAExpressions.treat;
 import static konkuk.thip.post.domain.PostType.RECORD;
 import static konkuk.thip.post.domain.PostType.VOTE;
 
@@ -31,8 +32,6 @@ public class RecordQueryRepositoryImpl implements RecordQueryRepository {
     private final JPAQueryFactory queryFactory;
 
     private final QPostJpaEntity post = QPostJpaEntity.postJpaEntity;
-    private final QRecordJpaEntity record = QRecordJpaEntity.recordJpaEntity;
-    private final QVoteJpaEntity vote = QVoteJpaEntity.voteJpaEntity;
     private final QUserJpaEntity user = QUserJpaEntity.userJpaEntity;
 
     @Override
@@ -47,8 +46,6 @@ public List<RoomPostQueryDto> findMyRecords(Long roomId, Long userId, Cursor cur
         return queryFactory
                 .select(selectPostQueryDto())
                 .from(post)
-                .leftJoin(record).on(post.postId.eq(record.postId))
-                .leftJoin(vote).on(post.postId.eq(vote.postId))
                 .join(post.userJpaEntity, user)
                 .where(where)
                 .orderBy(getOrderSpecifiers(roomPostSortType))
@@ -59,13 +56,13 @@ public List<RoomPostQueryDto> findMyRecords(Long roomId, Long userId, Cursor cur
     private BooleanBuilder buildMyRecordCondition(Long roomId, Long userId) {
         BooleanBuilder where = new BooleanBuilder();
 
-        BooleanBuilder voteCondition = new BooleanBuilder();
-        voteCondition.and(post.dtype.eq(VOTE.getType()))
-                .and(vote.roomJpaEntity.roomId.eq(roomId));
+        BooleanBuilder voteCondition = new BooleanBuilder()
+                .and(post.dtype.eq(VOTE.getType()))
+                .and(treat(post, QVoteJpaEntity.class).roomJpaEntity.roomId.eq(roomId));
 
-        BooleanBuilder recordCondition = new BooleanBuilder();
-        recordCondition.and(post.dtype.eq(RECORD.getType()))
-                .and(record.roomJpaEntity.roomId.eq(roomId));
+        BooleanBuilder recordCondition = new BooleanBuilder()
+                .and(post.dtype.eq(RECORD.getType()))
+                .and(treat(post, QRecordJpaEntity.class).roomJpaEntity.roomId.eq(roomId));
 
         where.and(voteCondition.or(recordCondition))
                 .and(post.userJpaEntity.userId.eq(userId))
@@ -84,8 +81,6 @@ public List<RoomPostQueryDto> findGroupRecordsOrderBySortType(Long roomId, Long
         return queryFactory
                 .select(selectPostQueryDto())
                 .from(post)
-                .leftJoin(record).on(post.postId.eq(record.postId))
-                .leftJoin(vote).on(post.postId.eq(vote.postId))
                 .join(post.userJpaEntity, user)
                 .where(where)
                 .orderBy(getOrderSpecifiers(roomPostSortType))
@@ -96,26 +91,28 @@ public List<RoomPostQueryDto> findGroupRecordsOrderBySortType(Long roomId, Long
     private BooleanBuilder buildRecordVoteCondition(Long roomId, Integer pageStart, Integer pageEnd, Boolean isOverview) {
         BooleanBuilder where = new BooleanBuilder();
 
-        BooleanBuilder voteCondition = new BooleanBuilder();
-        voteCondition.and(post.dtype.eq(VOTE.getType()))
-                .and(vote.roomJpaEntity.roomId.eq(roomId));
+        // VOTE
+        BooleanBuilder voteCondition = new BooleanBuilder()
+                .and(post.dtype.eq(VOTE.getType()))
+                .and(treat(post, QVoteJpaEntity.class).roomJpaEntity.roomId.eq(roomId));
 
         if (isOverview) {
-            voteCondition.and(vote.isOverview.isTrue());
+            voteCondition.and(treat(post, QVoteJpaEntity.class).isOverview.isTrue());
         } else {
-            voteCondition.and(vote.isOverview.isFalse())
-                    .and(vote.page.between(pageStart, pageEnd));
+            voteCondition.and(treat(post, QVoteJpaEntity.class).isOverview.isFalse())
+                    .and(treat(post, QVoteJpaEntity.class).page.between(pageStart, pageEnd));
         }
 
-        BooleanBuilder recordCondition = new BooleanBuilder();
-        recordCondition.and(post.dtype.eq(RECORD.getType()))
-                .and(record.roomJpaEntity.roomId.eq(roomId));
+        // RECORD
+        BooleanBuilder recordCondition = new BooleanBuilder()
+                .and(post.dtype.eq(RECORD.getType()))
+                .and(treat(post, QRecordJpaEntity.class).roomJpaEntity.roomId.eq(roomId));
 
         if (isOverview) {
-            recordCondition.and(record.isOverview.isTrue());
+            recordCondition.and(treat(post, QRecordJpaEntity.class).isOverview.isTrue());
         } else {
-            recordCondition.and(record.isOverview.isFalse())
-                    .and(record.page.between(pageStart, pageEnd));
+            recordCondition.and(treat(post, QRecordJpaEntity.class).isOverview.isFalse())
+                    .and(treat(post, QRecordJpaEntity.class).page.between(pageStart, pageEnd));
         }
 
         where.and(voteCondition.or(recordCondition))
@@ -126,16 +123,20 @@ private BooleanBuilder buildRecordVoteCondition(Long roomId, Integer pageStart,
     // Case: pageExpr (Record, Vote 분기)
     private NumberExpression<Integer> pageExpr() {
         return new CaseBuilder()
-                .when(post.dtype.eq(RECORD.getType())).then(record.page)
-                .when(post.dtype.eq(VOTE.getType())).then(vote.page)
+                .when(post.dtype.eq(RECORD.getType()))
+                .then(treat(post, QRecordJpaEntity.class).page)
+                .when(post.dtype.eq(VOTE.getType()))
+                .then(treat(post, QVoteJpaEntity.class).page)
                 .otherwise(0);
     }
 
     // Case: isOverviewExpr (총평 여부를 정렬 기준으로 사용)
     private NumberExpression<Integer> isOverviewExpr() {
         return new CaseBuilder()
-                .when(post.dtype.eq(RECORD.getType())).then(record.isOverview.castToNum(Integer.class))
-                .when(post.dtype.eq(VOTE.getType())).then(vote.isOverview.castToNum(Integer.class))
+                .when(post.dtype.eq(RECORD.getType()))
+                .then(treat(post, QRecordJpaEntity.class).isOverview.castToNum(Integer.class))
+                .when(post.dtype.eq(VOTE.getType()))
+                .then(treat(post, QVoteJpaEntity.class).isOverview.castToNum(Integer.class))
                 .otherwise(0);
     }