test jpa specification

src/main/java/com/backend/elearning/domain/course/Course.java

@@ -23,7 +23,9 @@
 @Getter
 @Setter
 @Builder
-@Table(name = "course")
+@Table(name = "course", indexes = {
+        @Index(name = "idx_course_title", columnList = "title")
+})
 public class Course extends AbstractAuditEntity {
 
     @Id

src/main/java/com/backend/elearning/domain/course/CourseController.java

@@ -7,6 +7,7 @@
 import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import org.springframework.data.domain.Pageable;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
@@ -25,6 +26,18 @@ public CourseController(CourseService courseService) {
         this.courseService = courseService;
     }
 
+    @GetMapping("/courses/spec")
+    public ResponseEntity<PageableData<CourseVM>> testSpecification (
+            Pageable pageable,
+            @RequestParam(value = "course", required = false) String[] course,
+            @RequestParam(value = "category", required = false) String [] category
+
+    ) {
+        PageableData<CourseVM> pageableCourses = courseService.advanceSearchWithSpecifications(pageable, course, category);
+        return ResponseEntity.ok().body(pageableCourses);
+    }
+
+
 
     @GetMapping("/admin/courses/paging")
     public ResponseEntity<PageableData<CourseVM>> getPageableCourse (
@@ -52,7 +65,7 @@ public ResponseEntity<List<CourseListGetVM>> getPageableCourse (
     @GetMapping("/courses/search")
     public ResponseEntity<PageableData<CourseListGetVM>> getCoursesByMultiQueryWithPageable (
             @RequestParam(value = "pageNum", defaultValue = Constants.PageableConstant.DEFAULT_PAGE_NUMBER, required = false) int pageNum,
-            @RequestParam(value = "pageSize", defaultValue = Constants.PageableConstant.DEFAULT_PAGE_SIZE, required = false) int pageSize,
+            @RequestParam(value = "pageSize", defaultValue = Constants.PageableConstant.DEFAULT_COURSE_PAGE_SIZE, required = false) int pageSize,
             @RequestParam(value = "keyword", required = false) String keyword,
             @RequestParam(value = "ratingStar", required = false) Float rating,
             @RequestParam(value = "level", required = false) List<String> level,
@@ -125,12 +138,16 @@ public ResponseEntity<Void> delete (
         return ResponseEntity.noContent().build();
     }
 
-
     @GetMapping("/admin/courses/promotions/{promotionId}")
     public ResponseEntity<List<CourseAssignPromotion>> getByPromotionId(@PathVariable("promotionId") Long promotionId){
         List<CourseAssignPromotion> courses = courseService.getByPromotionId(promotionId);
         return ResponseEntity.ok().body(courses);
     }
 
+    @GetMapping("/courses/suggestions")
+    public ResponseEntity<List<String>> getSuggestions(@RequestParam("keyword") String keyword){
+        return ResponseEntity.ok().body(courseService.getSuggestion(keyword));
+    }
+
 
 }

src/main/java/com/backend/elearning/domain/course/CourseRepository.java

@@ -3,10 +3,8 @@
 import com.backend.elearning.domain.section.Section;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
-import org.springframework.data.jpa.repository.EntityGraph;
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.data.jpa.repository.Modifying;
-import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.jpa.domain.Specification;
+import org.springframework.data.jpa.repository.*;
 import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
 
@@ -15,7 +13,11 @@
 import java.util.Optional;
 
 @Repository
-public interface CourseRepository extends JpaRepository<Course, Long> {
+public interface CourseRepository extends JpaRepository<Course, Long> , JpaSpecificationExecutor<Course> {
+
+
+    @Override
+    Page<Course> findAll(Specification<Course> spec, Pageable pageable);
 
     @Query("""
         select count(1)
@@ -310,6 +312,12 @@ Page<Course> findByMultiQueryWithKeyword(
     );
 
 
+    @Query("SELECT p FROM Course p " +
+            "WHERE LOWER(p.title) LIKE LOWER(CONCAT('%', :keyword, '%'))")
+    List<Course> getSuggestionCourse(@Param("keyword") String keyword, Pageable pageable);
+
+
+
 
     @Query(value = """
         select c

src/main/java/com/backend/elearning/domain/course/CourseService.java

@@ -1,6 +1,7 @@
 package com.backend.elearning.domain.course;
 
 import com.backend.elearning.domain.common.PageableData;
+import org.springframework.data.domain.Pageable;
 
 import java.util.List;
 
@@ -35,4 +36,8 @@ PageableData<CourseListGetVM> getCoursesByMultiQuery(int pageNum,
     List<CourseAssignPromotion> getByPromotionId(Long promotionId);
 
     List<CourseListGetVM> getCoursesByCategory(String categoryName, int pageNum, int pageSize);
+
+    List<String> getSuggestion(String keyword);
+
+    PageableData<CourseVM> advanceSearchWithSpecifications(Pageable pageable, String[] course, String[] category);
 }