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[refactor] 취향과 인기도 리팩토링
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6 changes: 5 additions & 1 deletion
6
src/main/java/org/recordy/server/bookmark/repository/BookmarkRepository.java
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@@ -1,17 +1,21 @@ | ||
package org.recordy.server.bookmark.repository; | ||
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import org.recordy.server.bookmark.domain.Bookmark; | ||
import org.recordy.server.keyword.domain.Keyword; | ||
import org.springframework.data.domain.Pageable; | ||
import org.springframework.data.domain.Slice; | ||
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import java.util.Map; | ||
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public interface BookmarkRepository { | ||
// command | ||
Bookmark save(Bookmark bookmark); | ||
void delete(long userId, long recordId); | ||
void deleteByUserId(long userId); | ||
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// query | ||
Slice<Bookmark> findAllByBookmarksOrderByIdDesc(long userId, long cursor, Pageable pageable); | ||
Slice<Bookmark> findAllByBookmarksOrderByIdDesc(long userId, Long cursor, Pageable pageable); | ||
boolean existsByUserIdAndRecordId(Long userId, Long recordId); | ||
long countByUserId(Long userId); | ||
Map<Keyword, Long> countAllByUserIdGroupByKeyword(long userId); | ||
} |
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31 changes: 19 additions & 12 deletions
31
src/main/java/org/recordy/server/keyword/domain/Keyword.java
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21 changes: 21 additions & 0 deletions
21
...ain/java/org/recordy/server/preference/controller/dto/response/PreferenceGetResponse.java
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,21 @@ | ||
package org.recordy.server.preference.controller.dto.response; | ||
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import org.recordy.server.preference.domain.Preference; | ||
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import java.util.List; | ||
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public record PreferenceGetResponse( | ||
List<List<String>> preference | ||
) { | ||
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public static PreferenceGetResponse from(Preference preference) { | ||
return new PreferenceGetResponse( | ||
preference.getNormalizedTopKeywords(3) | ||
.entrySet().stream() | ||
.map(entry -> | ||
List.of(entry.getKey().name(), String.valueOf(entry.getValue())) | ||
) | ||
.toList() | ||
); | ||
} | ||
} |
39 changes: 39 additions & 0 deletions
39
src/main/java/org/recordy/server/preference/domain/Preference.java
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@@ -0,0 +1,39 @@ | ||
package org.recordy.server.preference.domain; | ||
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import lombok.AllArgsConstructor; | ||
import lombok.Getter; | ||
import org.recordy.server.keyword.domain.Keyword; | ||
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import java.util.LinkedHashMap; | ||
import java.util.Map; | ||
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@AllArgsConstructor | ||
@Getter | ||
public class Preference { | ||
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Map<Keyword, Long> keywordAndCounts; | ||
long sum; | ||
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public static Preference from(Map<Keyword, Long> keywordAndCounts) { | ||
return new Preference(keywordAndCounts, sum(keywordAndCounts)); | ||
} | ||
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private static long sum(Map<Keyword, Long> preference) { | ||
return preference.values().stream() | ||
.mapToLong(Long::longValue) | ||
.sum(); | ||
} | ||
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public Map<Keyword, Long> getNormalizedTopKeywords(int size) { | ||
return keywordAndCounts.entrySet().stream() | ||
.sorted(Map.Entry.<Keyword, Long>comparingByValue().reversed()) | ||
.limit(size) | ||
.collect(LinkedHashMap::new, | ||
(map, entry) -> map.put(entry.getKey(), normalize(entry.getValue())), | ||
Map::putAll); | ||
} | ||
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private long normalize(long value) { | ||
return value * 100 / sum; | ||
} | ||
} |
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