[refactor] 자동완성기능 like로 검색되지 않는 경우 full text search로 검색

build.gradle

@@ -75,10 +75,14 @@ jacocoTestCoverageVerification {
                     "**/*Request*",
                     "**/*Response*",
                     "**/*Config*",
-                    "mju/iphak/maru_egg/common/**",
+                    "mju/iphak/maru_egg/common/dto",
+                    "mju/iphak/maru_egg/common/entity",
+                    "mju/iphak/maru_egg/common/exception",
+                    "mju/iphak/maru_egg/common/meta",
+                    "mju/iphak/maru_egg/common/regex",
+                    "mju/iphak/maru_egg/common/config/**",
                     "mju/iphak/maru_egg/auth/jwt/**",
                     "mju/iphak/maru_egg/answer/application/**",
-                    "mju/iphak/maru_egg/common/config/**",
                     "mju/iphak/maru_egg/auth/#/**",
                     "mju/iphak/maru_egg/question/domain/**",
                     "mju/iphak/maru_egg/**/dto/**",

src/main/java/mju/iphak/maru_egg/question/application/QuestionService.java

@@ -44,9 +44,16 @@ public List<QuestionListItemResponse> getQuestions(final QuestionType type, fina
 	public SliceQuestionResponse<SearchedQuestionsResponse> searchQuestionsOfCursorPaging(final String content,
 		final Integer cursorViewCount, final Long questionId, final Integer size) {
 		Pageable pageable = PageRequest.of(0, size);
-		return questionRepository.searchQuestionsOfCursorPagingByContent(
+		SliceQuestionResponse<SearchedQuestionsResponse> response;
+		response = questionRepository.searchQuestionsOfCursorPagingByContentWithLikeFunction(
 			content,
 			cursorViewCount, questionId, pageable);
+		if (response.data().isEmpty()) {
+			response = questionRepository.searchQuestionsOfCursorPagingByContentWithFullTextSearch(
+				content,
+				cursorViewCount, questionId, pageable);
+		}
+		return response;
 	}
 
 	@Transactional

src/main/java/mju/iphak/maru_egg/question/repository/QuestionRepositoryCustom.java

@@ -19,6 +19,11 @@ Optional<List<QuestionCore>> searchQuestionsByContentTokenAndTypeAndCategory(fin
 		final QuestionType type,
 		final QuestionCategory category);
 
-	SliceQuestionResponse<SearchedQuestionsResponse> searchQuestionsOfCursorPagingByContent(final String content,
+	SliceQuestionResponse<SearchedQuestionsResponse> searchQuestionsOfCursorPagingByContentWithFullTextSearch(
+		final String content,
+		final Integer cursorViewCount, final Long questionId, final Pageable pageable);
+
+	SliceQuestionResponse<SearchedQuestionsResponse> searchQuestionsOfCursorPagingByContentWithLikeFunction(
+		final String content,
 		final Integer cursorViewCount, final Long questionId, final Pageable pageable);
 }

src/main/java/mju/iphak/maru_egg/question/repository/QuestionRepositoryImpl.java

@@ -67,7 +67,7 @@ public Optional<List<QuestionCore>> searchQuestionsByContentTokenAndTypeAndCateg
 	}
 
 	@Override
-	public SliceQuestionResponse<SearchedQuestionsResponse> searchQuestionsOfCursorPagingByContent(
+	public SliceQuestionResponse<SearchedQuestionsResponse> searchQuestionsOfCursorPagingByContentWithFullTextSearch(
 		final String content,
 		final Integer cursorViewCount, final Long questionId, final Pageable pageable) {
 		QQuestion question = QQuestion.question;
@@ -102,6 +102,38 @@ public SliceQuestionResponse<SearchedQuestionsResponse> searchQuestionsOfCursorP
 			nextCursorViewCount, nextQuestionId);
 	}
 
+	@Override
+	public SliceQuestionResponse<SearchedQuestionsResponse> searchQuestionsOfCursorPagingByContentWithLikeFunction(
+		final String content,
+		final Integer cursorViewCount, final Long questionId, final Pageable pageable) {
+		QQuestion question = QQuestion.question;
+		int pageSize = pageable.getPageSize();
+
+		List<Question> questions = queryFactory
+			.selectFrom(question)
+			.where(question.content.contains(content))
+			.fetch();
+
+		boolean hasNext = questions.size() > pageSize;
+
+		if (hasNext) {
+			questions.remove(pageSize);
+		}
+
+		List<SearchedQuestionsResponse> questionResponses = mapToResponse(questions);
+
+		Integer nextCursorViewCount = null;
+		Long nextQuestionId = null;
+		if (!questions.isEmpty()) {
+			Question lastQuestion = questions.get(questions.size() - 1);
+			nextCursorViewCount = lastQuestion.getViewCount();
+			nextQuestionId = lastQuestion.getId();
+		}
+
+		return new SliceQuestionResponse<>(questionResponses, pageable.getPageNumber(), pageSize, hasNext,
+			nextCursorViewCount, nextQuestionId);
+	}
+
 	private NumberTemplate<Double> createBooleanTemplate(QQuestion question, String content) {
 		return Expressions.numberTemplate(Double.class, "function('match', {0}, {1})", question.content, content);
 	}

src/test/java/mju/iphak/maru_egg/question/application/QuestionServiceTest.java

@@ -187,7 +187,12 @@ void setUp() {
 		SliceQuestionResponse<SearchedQuestionsResponse> expectedResponse = new SliceQuestionResponse<>(
 			List.of(searchedQuestionsResponse), 0, size, false, null, null);
 
-		when(questionRepository.searchQuestionsOfCursorPagingByContent(content, cursorViewCount, questionId, pageable))
+		when(questionRepository.searchQuestionsOfCursorPagingByContentWithFullTextSearch(content, cursorViewCount,
+			questionId, pageable))
+			.thenReturn(expectedResponse);
+
+		when(questionRepository.searchQuestionsOfCursorPagingByContentWithLikeFunction(content, cursorViewCount,
+			questionId, pageable))
 			.thenReturn(expectedResponse);
 
 		// when

src/test/java/mju/iphak/maru_egg/question/repository/QuestionRepositoryImplTest.java

@@ -185,7 +185,7 @@ public void setUp() throws Exception {
 		Pageable pageable = PageRequest.of(0, 3);
 
 		// when
-		SliceQuestionResponse<SearchedQuestionsResponse> result = questionRepositoryImpl.searchQuestionsOfCursorPagingByContent(
+		SliceQuestionResponse<SearchedQuestionsResponse> result = questionRepositoryImpl.searchQuestionsOfCursorPagingByContentWithFullTextSearch(
 			content, null, null, pageable);
 
 		// then