[EDIT] 他人が作成したコースは見えないように修正しました。

src/main/java/com/example/demo/app/domain/model/CourseModel.java

@@ -3,7 +3,6 @@ package com.example.demo.app.domain.model;
 import java.util.List;
 
 import com.example.demo.app.infra.entity.CourseEntity;
-import com.example.demo.app.infra.entity.UserEntity;
 
 import lombok.AllArgsConstructor;
 import lombok.Getter;
@@ -27,11 +26,10 @@ public class CourseModel {
 		return courseEntityList.stream().map(CourseModel::convertFrom).toList();
 	}
 	
-	public static CourseEntity convertTo(CourseModel courseModel, List<UserEntity> userEntityList) {
+	public static CourseEntity convertTo(CourseModel courseModel) {
 		return new CourseEntity(
 				courseModel.getCourseId(),
 				courseModel.getCourseName(),
-				courseModel.getDescription(), 
+				courseModel.getDescription());
-				userEntityList);
 	}
 }

src/main/java/com/example/demo/app/domain/service/CourseService.java

@@ -13,4 +13,11 @@ public interface CourseService {
 	public Long findByName(String courName);
 	
 	public CourseModel save(CourseModel courseModel, Long userId);
+
+	public List<CourseModel> findAllByUserId(Long userId);
+	
+	public List<CourseModel> findAllByNull();
+
 }
+
+

src/main/java/com/example/demo/app/domain/service/impl/CourseServiceImpl.java

@@ -3,12 +3,16 @@ package com.example.demo.app.domain.service.impl;
 import java.util.ArrayList;
 import java.util.List;
 
+import jakarta.transaction.Transactional;
+
 import org.springframework.stereotype.Service;
 
 import com.example.demo.app.domain.model.CourseModel;
 import com.example.demo.app.domain.service.CourseService;
 import com.example.demo.app.infra.entity.CourseEntity;
+import com.example.demo.app.infra.entity.CourseOwnerEntity;
 import com.example.demo.app.infra.entity.UserEntity;
+import com.example.demo.app.infra.repository.CourseOwnerRepository;
 import com.example.demo.app.infra.repository.CourseRepository;
 import com.example.demo.app.infra.repository.UserRepository;
 
@@ -20,12 +24,22 @@ public class CourseServiceImpl implements CourseService {
 
 	private final CourseRepository courseRepository;
 	private final UserRepository userRepository;
+	private final CourseOwnerRepository courseOwnerRepository;
 	
 	public List<CourseModel> findAll(){
 		
 		return CourseEntity.createCourseModelList(courseRepository.findAll());
 	}
 	
+	public List<CourseModel> findAllByUserId(Long userId) { 
+		
+		return CourseModel.convertFrom(courseRepository.findAllByUserId(userId));
+	}
+	
+	public List<CourseModel> findAllByNull() {
+		return CourseModel.convertFrom(courseRepository.findAllByNull());
+	}
+	
 	public CourseModel findById(Long courseId) {
 		return CourseModel.convertFrom(courseRepository.findByCourseId(courseId));
 	}
@@ -34,12 +48,27 @@ public class CourseServiceImpl implements CourseService {
 		return courseRepository.findByCourseName(courseName).getCourseId();
 	}
 	
+	@Transactional
 	public CourseModel save(CourseModel courseModel, Long userId) {
 		
 		 List<UserEntity> userEntityList = new ArrayList<>();
 		 userEntityList.add(userRepository.findById(userId).get());
+		CourseEntity result = courseRepository.save( CourseModel.convertTo(courseModel));
+		
+		UserEntity user = userRepository.findById(userId).orElse(null);
+		
+		user.setCourseEntity(result);
+		
+		UserEntity userResult = userRepository.save(user);
+		
+		CourseOwnerEntity courseOwnerEntity = new CourseOwnerEntity();
+		courseOwnerEntity.setUserEntity(userResult);
+		courseOwnerEntity.setCourseEntity(result);
+		
+		courseOwnerRepository.save(courseOwnerEntity);
+		
+		return CourseModel.convertFrom(result);
 		
-		return CourseModel.convertFrom( courseRepository.save( CourseModel.convertTo(courseModel, userEntityList)));
 		
 	}
 }

src/main/java/com/example/demo/app/domain/service/impl/UserServiceImpl.java

@@ -52,6 +52,9 @@ public class UserServiceImpl implements UserService {
 		CourseEntity courseEntity = courseRepository.findById(courseId).orElse(null);
 
 		userEntity.setQuestionEntity(questionEntity);
+		
+		
+		
 		userEntity.setCourseEntity(courseEntity);
 
 		userEntity.setDeleteFlag(0);

src/main/java/com/example/demo/app/infra/entity/CourseEntity.java

@@ -7,7 +7,6 @@ import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
 import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
-import jakarta.persistence.OneToMany;
 import jakarta.persistence.Table;
 
 import com.example.demo.app.domain.model.CourseModel;
@@ -35,9 +34,6 @@ public class CourseEntity {
 	 @Column(name = "description", nullable = false)
 	 private String description;
 	 
-	 @OneToMany(mappedBy = "courseEntity")
-	 private List<UserEntity> userEntity;
-	 
 	 public static List<CourseModel> createCourseModelList(List<CourseEntity> courseEntityList) {
 
 	        return courseEntityList

src/main/java/com/example/demo/app/infra/repository/CourseRepository.java

@@ -1,5 +1,7 @@
 package com.example.demo.app.infra.repository;
 
+import java.util.List;
+
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 
@@ -13,5 +15,10 @@ public interface CourseRepository extends JpaRepository<CourseEntity, Long> {
 	@Query("SELECT c FROM CourseEntity c WHERE c.courseName = :courseName ")
 	public CourseEntity findByCourseName(String courseName);
 
+	@Query("select c from CourseEntity c inner join CourseOwnerEntity o on c.courseId = o.courseEntity.courseId inner join UserEntity u on o.userEntity.userId = u.userId where u.userId = :userId")
+	public List<CourseEntity> findAllByUserId(Long userId);
+
+	@Query("select c from CourseEntity c where c.courseId between 1 and 6")
+	public List<CourseEntity> findAllByNull();
 
 }

src/main/java/com/example/demo/app/presentation/controller/CourseController.java

@@ -14,6 +14,7 @@ import org.springframework.web.bind.annotation.RequestParam;
 
 import com.example.demo.aop.aspect.SessionCheck;
 import com.example.demo.app.domain.model.AllocationModel;
+import com.example.demo.app.domain.model.CourseModel;
 import com.example.demo.app.domain.model.LoginModel;
 import com.example.demo.app.domain.service.AllocationService;
 import com.example.demo.app.domain.service.CourseInfoService;
@@ -47,7 +48,9 @@ public class CourseController {
 		session.setAttribute(PageReturnAttributeKeyword.USER_FORM, userForm);
 		model.addAttribute(PageReturnAttributeKeyword.MODE, MODE);
 		model.addAttribute(PageReturnAttributeKeyword.CURRENT_COURSE_ID, courseService.findByName(DEFAULT));
-		model.addAttribute(PageReturnAttributeKeyword.COURSE_LIST, CourseForm.convertFrom(courseService.findAll()));
+
+		model.addAttribute(PageReturnAttributeKeyword.COURSE_LIST,
+				CourseForm.convertFrom(courseService.findAllByNull()));
 		model.addAttribute(PageReturnAttributeKeyword.COURSE_INFO_LIST,
 				CourseInfoForm.convertFrom(courseInfoService.findAll()));
 
@@ -66,9 +69,15 @@ public class CourseController {
 
 		Long currentCourseId = userService.findByUserId(userId).getCourseId();
 
+		List<CourseModel> courseModelList = new ArrayList<>(courseService.findAllByNull());
+
+		List<CourseModel> tempList = courseService.findAllByUserId(userId);
+
+		tempList.forEach(courseModelList::add);
+
 		model.addAttribute(PageReturnAttributeKeyword.MODE, MODE);
 		model.addAttribute(PageReturnAttributeKeyword.CURRENT_COURSE_ID, currentCourseId);
-		model.addAttribute(PageReturnAttributeKeyword.COURSE_LIST, CourseForm.convertFrom(courseService.findAll()));
+		model.addAttribute(PageReturnAttributeKeyword.COURSE_LIST, CourseForm.convertFrom(courseModelList));
 		model.addAttribute(PageReturnAttributeKeyword.COURSE_INFO_LIST,
 				CourseInfoForm.convertFrom(courseInfoService.findAll()));
 
@@ -117,27 +126,38 @@ public class CourseController {
 		List<AllocationModel> allocationModelList = new ArrayList<>();
 
 		allocationModelList.add(new AllocationModel(allocationFormList.getCategoryId1(),
-				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID), allocationFormList.getAllocationRatio1()));
+				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID),
+				allocationFormList.getAllocationRatio1()));
 		allocationModelList.add(new AllocationModel(allocationFormList.getCategoryId2(),
-				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID), allocationFormList.getAllocationRatio2()));
+				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID),
+				allocationFormList.getAllocationRatio2()));
 		allocationModelList.add(new AllocationModel(allocationFormList.getCategoryId3(),
-				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID), allocationFormList.getAllocationRatio3()));
+				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID),
+				allocationFormList.getAllocationRatio3()));
 		allocationModelList.add(new AllocationModel(allocationFormList.getCategoryId4(),
-				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID), allocationFormList.getAllocationRatio4()));
+				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID),
+				allocationFormList.getAllocationRatio4()));
 		allocationModelList.add(new AllocationModel(allocationFormList.getCategoryId5(),
-				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID), allocationFormList.getAllocationRatio5()));
+				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID),
+				allocationFormList.getAllocationRatio5()));
 		allocationModelList.add(new AllocationModel(allocationFormList.getCategoryId6(),
-				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID), allocationFormList.getAllocationRatio6()));
+				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID),
+				allocationFormList.getAllocationRatio6()));
 		allocationModelList.add(new AllocationModel(allocationFormList.getCategoryId7(),
-				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID), allocationFormList.getAllocationRatio7()));
+				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID),
+				allocationFormList.getAllocationRatio7()));
 		allocationModelList.add(new AllocationModel(allocationFormList.getCategoryId8(),
-				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID), allocationFormList.getAllocationRatio8()));
+				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID),
+				allocationFormList.getAllocationRatio8()));
 		allocationModelList.add(new AllocationModel(allocationFormList.getCategoryId9(),
-				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID), allocationFormList.getAllocationRatio9()));
+				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID),
+				allocationFormList.getAllocationRatio9()));
 		allocationModelList.add(new AllocationModel(allocationFormList.getCategoryId10(),
-				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID), allocationFormList.getAllocationRatio10()));
+				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID),
+				allocationFormList.getAllocationRatio10()));
 		allocationModelList.add(new AllocationModel(allocationFormList.getCategoryId11(),
-				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID), allocationFormList.getAllocationRatio11()));
+				(Long) session.getAttribute(PageReturnAttributeKeyword.COURSE_ID),
+				allocationFormList.getAllocationRatio11()));
 
 		allocationService.save(allocationModelList);