QueryDSL 필터링 기능

.gitignore

@@ -41,3 +41,4 @@ logs
 docker-compose.yml
 *.http
 
+/src/main/generated

build.gradle

@@ -60,6 +60,12 @@ dependencies {
     // Development
     developmentOnly 'org.springframework.boot:spring-boot-devtools'
 
+    // QueryDSL
+    implementation 'com.querydsl:querydsl-jpa:5.0.0:jakarta'
+    annotationProcessor "com.querydsl:querydsl-apt:${dependencyManagement.importedProperties['querydsl.version']}:jakarta"
+    annotationProcessor "jakarta.persistence:jakarta.persistence-api"
+    annotationProcessor "jakarta.annotation:jakarta.annotation-api"
+
     // Test
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testImplementation 'org.springframework.security:spring-security-test'
@@ -70,3 +76,17 @@ dependencies {
 tasks.named('test') {
     useJUnitPlatform()
 }
+
+def generated = 'src/main/generated'
+
+tasks.withType(JavaCompile) {
+    options.getGeneratedSourceOutputDirectory().set(file(generated))
+}
+
+sourceSets {
+    main.java.srcDirs += [generated]
+}
+
+clean {
+    delete file(generated)
+}

src/main/java/com/ctrls/auto_enter_view/config/QueryDslConfig.java

@@ -0,0 +1,16 @@
+package com.ctrls.auto_enter_view.config;
+
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import jakarta.persistence.EntityManager;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class QueryDslConfig {
+
+  @Bean
+  public JPAQueryFactory jpaQueryFactory(EntityManager entityManager) {
+
+    return new JPAQueryFactory(entityManager);
+  }
+}

src/main/java/com/ctrls/auto_enter_view/controller/CommonJobPostingController.java

@@ -2,7 +2,11 @@
 
 import com.ctrls.auto_enter_view.dto.common.JobPostingDetailDto;
 import com.ctrls.auto_enter_view.dto.common.MainJobPostingDto;
+import com.ctrls.auto_enter_view.enums.Education;
+import com.ctrls.auto_enter_view.enums.JobCategory;
+import com.ctrls.auto_enter_view.enums.TechStack;
 import com.ctrls.auto_enter_view.service.JobPostingService;
+import java.util.List;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -47,4 +51,21 @@ public ResponseEntity<JobPostingDetailDto.Response> getDetailJobPosting(
     JobPostingDetailDto.Response response = jobPostingService.getJobPostingDetail(jobPostingKey);
     return ResponseEntity.ok(response);
   }
+
+  @GetMapping("/search")
+  public ResponseEntity<MainJobPostingDto.Response> searchJobPosting(
+      @RequestParam(defaultValue = "1") int page,
+      @RequestParam(defaultValue = "24") int size,
+      @RequestParam(required = false) JobCategory jobCategory,
+      @RequestParam(required = false) List<TechStack> techStacks,
+      @RequestParam(required = false) String employmentType,
+      @RequestParam(required = false) Integer minCareer,
+      @RequestParam(required = false) Integer maxCareer,
+      @RequestParam(required = false) Education education
+  ) {
+
+    MainJobPostingDto.Response response = jobPostingService.searchJobPosting(page, size,
+        jobCategory, techStacks, employmentType, minCareer, maxCareer, education);
+    return ResponseEntity.ok(response);
+  }
 }

src/main/java/com/ctrls/auto_enter_view/repository/JobPostingRepositoryDSL.java

@@ -0,0 +1,22 @@
+package com.ctrls.auto_enter_view.repository;
+
+import com.ctrls.auto_enter_view.entity.JobPostingEntity;
+import com.ctrls.auto_enter_view.enums.Education;
+import com.ctrls.auto_enter_view.enums.JobCategory;
+import com.ctrls.auto_enter_view.enums.TechStack;
+import java.util.List;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+
+public interface JobPostingRepositoryDSL {
+
+  Page<JobPostingEntity> searchJobPosting(
+      Pageable pageable,
+      JobCategory jobCategory,
+      List<TechStack> techStacks,
+      String employmentType,
+      Integer minCareer,
+      Integer maxCareer,
+      Education education
+  );
+}

src/main/java/com/ctrls/auto_enter_view/repository/JobPostingRepositoryDSLImpl.java

@@ -0,0 +1,108 @@
+package com.ctrls.auto_enter_view.repository;
+
+import static com.ctrls.auto_enter_view.entity.QJobPostingEntity.jobPostingEntity;
+import static com.ctrls.auto_enter_view.entity.QJobPostingTechStackEntity.jobPostingTechStackEntity;
+
+import com.ctrls.auto_enter_view.entity.JobPostingEntity;
+import com.ctrls.auto_enter_view.enums.Education;
+import com.ctrls.auto_enter_view.enums.JobCategory;
+import com.ctrls.auto_enter_view.enums.TechStack;
+import com.querydsl.core.BooleanBuilder;
+import com.querydsl.core.types.dsl.BooleanExpression;
+import com.querydsl.jpa.JPQLQuery;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import java.util.List;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageImpl;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.support.QuerydslRepositorySupport;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public class JobPostingRepositoryDSLImpl extends QuerydslRepositorySupport implements
+    JobPostingRepositoryDSL {
+
+  private final JPAQueryFactory jpaQueryFactory;
+
+  public JobPostingRepositoryDSLImpl(JPAQueryFactory jpaQueryFactory) {
+
+    super(JobPostingEntity.class);
+    this.jpaQueryFactory = jpaQueryFactory;
+  }
+
+  public Page<JobPostingEntity> searchJobPosting(
+      Pageable pageable,
+      JobCategory jobCategory,
+      List<TechStack> techStacks,
+      String employmentType,
+      Integer minCareer,
+      Integer maxCareer,
+      Education education
+  ) {
+
+    JPQLQuery<JobPostingEntity> query = jpaQueryFactory.selectFrom(jobPostingEntity)
+        .leftJoin(jobPostingTechStackEntity)
+        .on(jobPostingEntity.jobPostingKey.eq(jobPostingTechStackEntity.jobPostingKey))
+        .where(
+            eqJobCategory(jobCategory),
+            eqTechStack(techStacks),
+            eqEmploymentType(employmentType),
+            eqCareer(minCareer, maxCareer),
+            eqEducation(education)
+        )
+        .distinct();
+
+    List<JobPostingEntity> entities = this.getQuerydsl().applyPagination(pageable, query).fetch();
+    return new PageImpl<>(entities, pageable, query.fetch().size());
+  }
+
+  private BooleanExpression eqJobCategory(JobCategory jobCategory) {
+
+    if (jobCategory == null) {
+      return null;
+    }
+    return jobPostingEntity.jobCategory.eq(jobCategory);
+  }
+
+  private BooleanBuilder eqTechStack(List<TechStack> techStacks) {
+
+    if (techStacks == null || techStacks.isEmpty()) {
+      return null;
+    }
+
+    BooleanBuilder booleanBuilder = new BooleanBuilder();
+    for (TechStack techStack : techStacks) {
+      booleanBuilder.and(jobPostingTechStackEntity.techName.eq(techStack));
+    }
+    return booleanBuilder;
+  }
+
+  private BooleanExpression eqEmploymentType(String employmentType) {
+
+    if (employmentType == null) {
+      return null;
+    }
+    return jobPostingEntity.employmentType.eq(employmentType);
+  }
+
+  private BooleanExpression eqCareer(Integer minCareer, Integer maxCareer) {
+
+    if (minCareer == null && maxCareer == null) {
+      return null;
+    } else if (minCareer != null && maxCareer == null) {
+      return jobPostingEntity.career.goe(minCareer);
+    } else if (minCareer == null && maxCareer != null) {
+      return jobPostingEntity.career.loe(maxCareer);
+    } else {
+      return jobPostingEntity.career.between(minCareer, maxCareer);
+    }
+  }
+
+  private BooleanExpression eqEducation(Education education) {
+
+    if (education == null) {
+      return null;
+    }
+    return jobPostingEntity.education.eq(education);
+  }
+}

src/main/java/com/ctrls/auto_enter_view/service/JobPostingService.java

@@ -22,7 +22,9 @@
 import com.ctrls.auto_enter_view.entity.JobPostingImageEntity;
 import com.ctrls.auto_enter_view.entity.JobPostingStepEntity;
 import com.ctrls.auto_enter_view.entity.JobPostingTechStackEntity;
+import com.ctrls.auto_enter_view.enums.Education;
 import com.ctrls.auto_enter_view.enums.ErrorCode;
+import com.ctrls.auto_enter_view.enums.JobCategory;
 import com.ctrls.auto_enter_view.enums.TechStack;
 import com.ctrls.auto_enter_view.exception.CustomException;
 import com.ctrls.auto_enter_view.repository.ApplicantRepository;
@@ -32,6 +34,7 @@
 import com.ctrls.auto_enter_view.repository.CompanyRepository;
 import com.ctrls.auto_enter_view.repository.JobPostingImageRepository;
 import com.ctrls.auto_enter_view.repository.JobPostingRepository;
+import com.ctrls.auto_enter_view.repository.JobPostingRepositoryDSL;
 import com.ctrls.auto_enter_view.repository.JobPostingStepRepository;
 import com.ctrls.auto_enter_view.repository.JobPostingTechStackRepository;
 import java.time.LocalDate;
@@ -66,6 +69,7 @@ public class JobPostingService {
   private final JobPostingStepRepository jobPostingStepRepository;
   private final AppliedJobPostingRepository appliedJobPostingRepository;
   private final JobPostingImageRepository jobPostingImageRepository;
+  private final JobPostingRepositoryDSL jobPostingRepositoryDSL;
   private final FilteringService filteringService;
   private final MailComponent mailComponent;
   private final KeyGenerator keyGenerator;
@@ -113,7 +117,6 @@ public JobPostingEntity createJobPosting(UserDetails userDetails, String company
     }
 
     return jobPostingEntity;
-
   }
 
   /**
@@ -128,6 +131,7 @@ public JobPostingEntity createJobPosting(UserDetails userDetails, String company
    */
   @Transactional
   public void editJobPosting(UserDetails userDetails, String jobPostingKey, Request request) {
+
     JobPostingEntity jobPostingEntity = jobPostingRepository.findByJobPostingKey(jobPostingKey)
         .orElseThrow(() -> new CustomException(JOB_POSTING_NOT_FOUND));
 
@@ -189,6 +193,7 @@ public void editJobPosting(UserDetails userDetails, String jobPostingKey, Reques
    */
   @Transactional
   public void deleteJobPosting(UserDetails userDetails, String jobPostingKey) {
+
     log.info("채용 공고 삭제하기");
 
     if (verifyExistsByJobPostingKey(jobPostingKey)) {
@@ -227,6 +232,7 @@ public void deleteJobPosting(UserDetails userDetails, String jobPostingKey) {
   @Transactional(readOnly = true)
   public List<JobPostingInfoDto> getJobPostingsByCompanyKey(UserDetails userDetails,
       String companyKey) {
+
     log.info("회사 본인이 등록한 채용공고 목록 조회");
 
     CompanyEntity company = findCompanyByPrincipal(userDetails);
@@ -251,10 +257,12 @@ public List<JobPostingInfoDto> getJobPostingsByCompanyKey(UserDetails userDetail
   // TODO : 회사가 탈퇴했을 때, 발생하는 문제점 해결하기 - 탈퇴한 회사 이름을 가져오지 못해 에러 발생 상황이 있었음
   @Transactional(readOnly = true)
   public MainJobPostingDto.Response getAllJobPosting(int page, int size) {
+
     String cacheKey = "mainJobPostings:" + page + "-" + size;
 
     // Redis : 캐시된 데이터 확인
-    MainJobPostingDto.Response cachedResponse = (MainJobPostingDto.Response) redisObjectTemplate.opsForValue().get(cacheKey);
+    MainJobPostingDto.Response cachedResponse = (MainJobPostingDto.Response) redisObjectTemplate.opsForValue()
+        .get(cacheKey);
     if (cachedResponse != null) {
       log.info("Redis에서 캐시된 데이터 조회");
       return cachedResponse;
@@ -297,6 +305,7 @@ public MainJobPostingDto.Response getAllJobPosting(int page, int size) {
    */
   @Transactional(readOnly = true)
   public JobPostingDetailDto.Response getJobPostingDetail(String jobPostingKey) {
+
     log.info("채용 공고 상세 보기");
 
     LocalDate currentDate = LocalDate.now();
@@ -327,6 +336,7 @@ public JobPostingDetailDto.Response getJobPostingDetail(String jobPostingKey) {
    */
   @Transactional
   public void applyJobPosting(String jobPostingKey, String candidateKey) {
+
     JobPostingEntity jobPostingEntity = jobPostingRepository.findByJobPostingKey(jobPostingKey)
         .orElseThrow(() -> new CustomException(
             JOB_POSTING_NOT_FOUND));
@@ -363,6 +373,44 @@ public void applyJobPosting(String jobPostingKey, String candidateKey) {
     log.info("AppliedJobPosting 추가 완료");
   }
 
+  /**
+   * 검색 기능
+   *
+   * @param page
+   * @param size
+   * @param jobCategory
+   * @param techStacks
+   * @param employmentType
+   * @param minCareer
+   * @param maxCareer
+   * @param education
+   * @return
+   */
+  public MainJobPostingDto.Response searchJobPosting(int page, int size, JobCategory jobCategory,
+      List<TechStack> techStacks, String employmentType, Integer minCareer, Integer maxCareer,
+      Education education) {
+
+    Pageable pageable = PageRequest.of(page - 1, size, Sort.by("endDate").ascending());
+    Page<JobPostingEntity> jobPostingPage = jobPostingRepositoryDSL.searchJobPosting(pageable,
+        jobCategory, techStacks, employmentType, minCareer, maxCareer, education);
+
+    int totalPages = jobPostingPage.getTotalPages();
+    long totalElements = jobPostingPage.getTotalElements();
+
+    List<MainJobPostingDto.JobPostingMainInfo> jobPostingMainInfoList = jobPostingPage.getContent()
+        .stream()
+        .map(this::createJobPostingMainInfo)
+        .collect(Collectors.toList());
+
+    MainJobPostingDto.Response response = MainJobPostingDto.Response.builder()
+        .jobPostingsList(jobPostingMainInfoList)
+        .totalPages(totalPages)
+        .totalElements(totalElements)
+        .build();
+
+    return response;
+  }
+
   /**
    * 이미지 URL 가져오기
    *
@@ -377,7 +425,6 @@ private String getImageUrl(String jobPostingKey) {
     return imageEntityOpt.map(JobPostingImageEntity::getCompanyImageUrl).orElse(null);
   }
 
-
   /**
    * 채용 공고 단계 중 맨 처음 단계 가져오기
    *
@@ -409,6 +456,7 @@ private CompanyEntity findCompanyByPrincipal(UserDetails userDetails) {
    * @param companyKey 회사 KEY
    */
   private void verifyCompanyOwnership(CompanyEntity company, String companyKey) {
+
     log.info("회사 본인 확인");
     if (!company.getCompanyKey().equals(companyKey)) {
       throw new CustomException(NO_AUTHORITY);
@@ -422,6 +470,7 @@ private void verifyCompanyOwnership(CompanyEntity company, String companyKey) {
    * @return 지원자 존재시 TRUE, 없을 시 FALSE
    */
   private boolean verifyExistsByJobPostingKey(String jobPostingKey) {
+
     log.info("채용 공고에 지원한 지원자가 존재하는지 확인");
     Long firstStep = getJobPostingStepEntity(jobPostingKey).getId();
 
@@ -506,6 +555,7 @@ private List<String> getStep(String jobPostingKey) {
    */
   private void notifyCandidates(List<CandidateListEntity> candidates,
       JobPostingEntity jobPostingEntity) {
+
     log.info("지원자들에게 채용 공고 수정 알림 메일 전송");
 
     for (CandidateListEntity candidate : candidates) {

src/main/resources/logback-spring.xml

@@ -6,7 +6,9 @@
   <!-- 콘솔에 남길 로그 -->
   <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
     <encoder>
-      <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS}] %highlight(%-5level) $magenta(%-4relative) --- [ %thread{10} ] %cyan(%logger{20}) : %msg%n </pattern>
+      <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS}] %highlight(%-5level) %magenta(%-4relative) --- [
+        %thread{10} ] %cyan(%logger{20}) : %msg%n
+      </pattern>
     </encoder>
   </appender>