删除courseCategory该用resource_category

src/main/java/xyz/playedu/api/service/CategoryCourseService.java

@@ -1,19 +0,0 @@
-package xyz.playedu.api.service;
-
-import xyz.playedu.api.domain.CategoryCourse;
-import com.baomidou.mybatisplus.extension.service.IService;
-
-import java.util.List;
-
-/**
- * @author tengteng
- * @description 针对表【category_course】的数据库操作Service
- * @createDate 2023-02-24 14:48:26
- */
-public interface CategoryCourseService extends IService<CategoryCourse> {
-    List<Integer> getCourseIdsByCategoryIds(Integer[] categoryIds);
-
-    List<Integer> getCategoryIdsByCourseId(Integer id);
-
-    void removeByCourseId(Integer courseId);
-}

src/main/java/xyz/playedu/api/service/CourseCategoryService.java

@@ -1,32 +0,0 @@
-package xyz.playedu.api.service;
-
-import xyz.playedu.api.domain.CourseCategory;
-import com.baomidou.mybatisplus.extension.service.IService;
-import xyz.playedu.api.exception.NotFoundException;
-
-import java.util.List;
-
-/**
- * @author tengteng
- * @description 针对表【course_categories】的数据库操作Service
- * @createDate 2023-02-24 13:55:19
- */
-public interface CourseCategoryService extends IService<CourseCategory> {
-
-    List<CourseCategory> listByParentId(Integer id);
-
-    List<CourseCategory> all();
-
-    CourseCategory findOrFail(Integer id) throws NotFoundException;
-
-    void deleteById(Integer id) throws NotFoundException;
-
-    void update(CourseCategory category, String name, Integer parentId, Integer sort) throws NotFoundException;
-
-    void create(String name, Integer parentId, Integer sort) throws NotFoundException;
-
-    String childrenParentChain(CourseCategory category);
-
-    String compParentChain(Integer parentId) throws NotFoundException;
-
-}

src/main/java/xyz/playedu/api/service/impl/CategoryCourseServiceImpl.java

@@ -1,54 +0,0 @@
-package xyz.playedu.api.service.impl;
-
-import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
-import xyz.playedu.api.domain.CategoryCourse;
-import xyz.playedu.api.service.CategoryCourseService;
-import xyz.playedu.api.mapper.CategoryCourseMapper;
-import org.springframework.stereotype.Service;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * @author tengteng
- * @description 针对表【category_course】的数据库操作Service实现
- * @createDate 2023-02-24 14:48:26
- */
-@Service
-public class CategoryCourseServiceImpl extends ServiceImpl<CategoryCourseMapper, CategoryCourse>
-        implements CategoryCourseService {
-    @Override
-    public List<Integer> getCourseIdsByCategoryIds(Integer[] categoryIds) {
-        List<Integer> ids = new ArrayList<>();
-        List<CategoryCourse> categoryCourses = list(query().getWrapper().in("category_id", categoryIds));
-        if (categoryCourses.size() == 0) {
-            return ids;
-        }
-        for (CategoryCourse categoryCourse : categoryCourses) {
-            ids.add(categoryCourse.getCourseId());
-        }
-        return ids;
-    }
-
-    @Override
-    public List<Integer> getCategoryIdsByCourseId(Integer id) {
-        List<Integer> ids = new ArrayList<>();
-        List<CategoryCourse> categoryCourses = list(query().getWrapper().eq("course_id", id));
-        if (categoryCourses.size() == 0) {
-            return ids;
-        }
-        for (CategoryCourse categoryCourse : categoryCourses) {
-            ids.add(categoryCourse.getCategoryId());
-        }
-        return ids;
-    }
-
-    @Override
-    public void removeByCourseId(Integer courseId) {
-        remove(query().getWrapper().eq("course_id", courseId));
-    }
-}
-
-
-
-

src/main/java/xyz/playedu/api/service/impl/CourseCategoryServiceImpl.java

@@ -1,161 +0,0 @@
-package xyz.playedu.api.service.impl;
-
-import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.transaction.annotation.Transactional;
-import xyz.playedu.api.domain.CourseCategory;
-import xyz.playedu.api.exception.NotFoundException;
-import xyz.playedu.api.service.CourseCategoryService;
-import xyz.playedu.api.mapper.CourseCategoryMapper;
-import org.springframework.stereotype.Service;
-
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.List;
-
-/**
- * @author tengteng
- * @description 针对表【course_categories】的数据库操作Service实现
- * @createDate 2023-02-24 13:55:19
- */
-@Service
-public class CourseCategoryServiceImpl extends ServiceImpl<CourseCategoryMapper, CourseCategory> implements CourseCategoryService {
-
-    @Override
-    public List<CourseCategory> listByParentId(Integer id) {
-        return list(query().getWrapper().eq("parent_id", id).orderByAsc("sort"));
-    }
-
-    @Override
-    public List<CourseCategory> all() {
-        return list(query().getWrapper().orderByAsc("sort"));
-    }
-
-    @Override
-    public CourseCategory findOrFail(Integer id) throws NotFoundException {
-        CourseCategory category = getById(id);
-        if (category == null) {
-            throw new NotFoundException("分类不存在");
-        }
-        return category;
-    }
-
-    @Override
-    @Transactional
-    public void deleteById(Integer id) throws NotFoundException {
-        CourseCategory category = findOrFail(id);
-        //更新parent_chain
-        updateParentChain(category.getParentChain(), childrenParentChain(category));
-        //删除记录
-        removeById(category.getId());
-    }
-
-    @Override
-    @Transactional
-    public void update(CourseCategory category, String name, Integer parentId, Integer sort) throws NotFoundException {
-        String childrenChainPrefix = childrenParentChain(category);
-
-        CourseCategory data = new CourseCategory();
-        data.setId(category.getId());
-
-        if (!category.getName().equals(name)) {
-            data.setName(name);
-        }
-
-        if (!category.getParentId().equals(parentId)) {
-            data.setParentId(parentId);
-            if (parentId.equals(0)) {
-                data.setParentChain("");
-            } else {
-                CourseCategory parentCourseCategory = findOrFail(parentId);
-                data.setParentChain(childrenParentChain(parentCourseCategory));
-            }
-        }
-        if (!category.getSort().equals(sort)) {
-            data.setSort(sort);
-        }
-
-        //提交更换
-        updateById(data);
-
-        category = getById(category.getId());
-        updateParentChain(childrenParentChain(category), childrenChainPrefix);
-    }
-
-    private void updateParentChain(String newChildrenPC, String oldChildrenPC) {
-        List<CourseCategory> children = list(query().getWrapper().like("parent_chain", oldChildrenPC + "%"));
-        if (children.size() == 0) {
-            return;
-        }
-
-        ArrayList<CourseCategory> updateRows = new ArrayList<>();
-        for (CourseCategory tmpCourseCategory : children) {
-            CourseCategory tmpUpdateCourseCategory = new CourseCategory();
-            tmpUpdateCourseCategory.setId(tmpCourseCategory.getId());
-
-            // parentChain计算
-            String pc = newChildrenPC;
-            if (!tmpCourseCategory.getParentChain().equals(oldChildrenPC)) {
-                pc = tmpCourseCategory.getParentChain().replaceFirst(oldChildrenPC + ",", newChildrenPC.length() == 0 ? newChildrenPC : newChildrenPC + ',');
-            }
-            tmpUpdateCourseCategory.setParentChain(pc);
-
-            // parentId计算
-            int parentId = 0;
-            if (pc != null && pc.length() > 0) {
-                String[] parentIds = pc.split(",");
-                parentId = Integer.parseInt(parentIds[parentIds.length - 1]);
-            }
-            tmpUpdateCourseCategory.setParentId(parentId);
-
-            updateRows.add(tmpUpdateCourseCategory);
-        }
-        updateBatchById(updateRows);
-    }
-
-
-    @Override
-    public void create(String name, Integer parentId, Integer sort) throws NotFoundException {
-        String parentChain = "";
-        if (parentId != 0) {
-            parentChain = compParentChain(parentId);
-        }
-
-        CourseCategory category = new CourseCategory();
-        category.setName(name);
-        category.setParentId(parentId);
-        category.setParentChain(parentChain);
-        category.setSort(sort);
-        category.setCreatedAt(new Date());
-        category.setUpdatedAt(new Date());
-
-        save(category);
-    }
-
-    @Override
-    public String childrenParentChain(CourseCategory category) {
-        String prefix = category.getId() + "";
-        if (category.getParentChain() != null && category.getParentChain().length() > 0) {
-            prefix = category.getParentChain() + "," + prefix;
-        }
-        return prefix;
-    }
-
-    @Override
-    public String compParentChain(Integer parentId) throws NotFoundException {
-        String parentChain = "";
-        if (parentId != 0) {
-            CourseCategory parentCourseCategory = getById(parentId);
-            if (parentCourseCategory == null) {
-                throw new NotFoundException("父级分类不存在");
-            }
-            String pc = parentCourseCategory.getParentChain();
-            parentChain = pc == null || pc.length() == 0 ? parentId + "" : pc + "," + parentId;
-        }
-        return parentChain;
-    }
-}
-
-
-
-

src/main/java/xyz/playedu/api/service/impl/CourseServiceImpl.java

@@ -6,15 +6,15 @@ import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.transaction.annotation.Transactional;
-import xyz.playedu.api.domain.CategoryCourse;
+import xyz.playedu.api.domain.ResourceCourseCategory;
 import xyz.playedu.api.domain.Course;
 import xyz.playedu.api.domain.CourseDepartment;
 import xyz.playedu.api.exception.NotFoundException;
-import xyz.playedu.api.service.CategoryCourseService;
 import xyz.playedu.api.service.CourseDepartmentService;
 import xyz.playedu.api.service.CourseService;
 import xyz.playedu.api.mapper.CourseMapper;
 import org.springframework.stereotype.Service;
+import xyz.playedu.api.service.internal.ResourceCourseCategoryService;
 import xyz.playedu.api.types.paginate.CoursePaginateFiler;
 import xyz.playedu.api.types.paginate.PaginationResult;
 import xyz.playedu.api.util.HelperUtil;
@@ -35,7 +35,7 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course> impleme
     private CourseDepartmentService courseDepartmentService;
 
     @Autowired
-    private CategoryCourseService categoryCourseService;
+    private ResourceCourseCategoryService courseCategoryService;
 
     @Override
     public PaginationResult<Course> paginate(int page, int size, CoursePaginateFiler filter) {
@@ -46,19 +46,17 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course> impleme
         }
         if (filter.getDepIds() != null && filter.getDepIds().length > 0) {
             List<Integer> courseIds = courseDepartmentService.getCourseIdsByDepIds(filter.getDepIds());
-            if (courseIds.size() == 0) {
-                wrapper.in("id", HelperUtil.zeroIntegerList());
-            } else {
-                wrapper.in("id", courseIds);
+            if (courseIds == null || courseIds.size() == 0) {
+                courseIds = HelperUtil.zeroIntegerList();
             }
+            wrapper.in("id", courseIds);
         }
         if (filter.getCategoryIds() != null && filter.getCategoryIds().length > 0) {
-            List<Integer> courseIds = categoryCourseService.getCourseIdsByCategoryIds(filter.getCategoryIds());
-            if (courseIds.size() == 0) {
-                wrapper.in("id", HelperUtil.zeroIntegerList());
-            } else {
-                wrapper.in("id", courseIds);
+            List<Integer> courseIds = courseCategoryService.getCourseIdsByCategoryIds(List.of(filter.getCategoryIds()));
+            if (courseIds == null || courseIds.size() == 0) {
+                courseIds = HelperUtil.zeroIntegerList();
             }
+            wrapper.in("id", courseIds);
         }
 
         String sortFiled = filter.getSortField();
@@ -88,16 +86,17 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course> impleme
     @Override
     @Transactional
     public void createWithCategoryIdsAndDepIds(String title, String thumb, Integer isShow, Integer[] categoryIds, Integer[] depIds) {
+        // 创建课程
         Course course = new Course();
         course.setTitle(title);
         course.setThumb(thumb);
         course.setIsShow(isShow);
         course.setCreatedAt(new Date());
         course.setUpdatedAt(new Date());
-
         save(course);
-
+        // 关联分类
         relateCategories(course, categoryIds);
+        // 关联部门
         relateDepartments(course, depIds);
     }
 
@@ -108,10 +107,11 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course> impleme
         }
         List<CourseDepartment> courseDepartments = new ArrayList<>();
         for (int i = 0; i < depIds.length; i++) {
-            CourseDepartment courseDepartment = new CourseDepartment();
-            courseDepartment.setCourseId(course.getId());
-            courseDepartment.setDepId(depIds[i]);
-            courseDepartments.add(courseDepartment);
+            Integer tmpDepId = depIds[i];
+            courseDepartments.add(new CourseDepartment() {{
+                setCourseId(course.getId());
+                setDepId(tmpDepId);
+            }});
         }
         courseDepartmentService.saveBatch(courseDepartments);
     }
@@ -127,19 +127,20 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course> impleme
         if (categoryIds == null || categoryIds.length == 0) {
             return;
         }
-        List<CategoryCourse> categoryCourses = new ArrayList<>();
+        List<ResourceCourseCategory> resourceCourseCategories = new ArrayList<>();
         for (int i = 0; i < categoryIds.length; i++) {
-            CategoryCourse categoryCourse = new CategoryCourse();
-            categoryCourse.setCourseId(course.getId());
-            categoryCourse.setCategoryId(categoryIds[i]);
-            categoryCourses.add(categoryCourse);
+            Integer tmpCategoryId = categoryIds[i];
+            resourceCourseCategories.add(new ResourceCourseCategory() {{
+                setCategoryId(tmpCategoryId);
+                setCourseId(course.getId());
+            }});
         }
-        categoryCourseService.saveBatch(categoryCourses);
+        courseCategoryService.saveBatch(resourceCourseCategories);
     }
 
     @Override
     public void resetRelateCategories(Course course, Integer[] categoryIds) {
-        categoryCourseService.removeByCourseId(course.getId());
+        courseCategoryService.removeByCourseId(course.getId());
         relateCategories(course, categoryIds);
     }
 
@@ -181,7 +182,7 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course> impleme
 
     @Override
     public List<Integer> getCategoryIdsByCourseId(Integer courseId) {
-        return categoryCourseService.getCategoryIdsByCourseId(courseId);
+        return courseCategoryService.getCategoryIdsByCourseId(courseId);
     }
 
     @Override
@@ -194,7 +195,7 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course> impleme
 
     @Override
     public void removeCategoryIdRelate(Integer categoryId) {
-        categoryCourseService.remove(categoryCourseService.query().getWrapper().eq("category_id", categoryId));
+        courseCategoryService.removeByCategoryId(categoryId);
     }
 }
 

src/main/java/xyz/playedu/api/service/impl/internal/ResourceCourseCategoryServiceImpl.java

@@ -0,0 +1,43 @@
+package xyz.playedu.api.service.impl.internal;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import xyz.playedu.api.domain.ResourceCourseCategory;
+import xyz.playedu.api.service.internal.ResourceCourseCategoryService;
+import xyz.playedu.api.mapper.ResourceCourseCategoryMapper;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+/**
+ * @author tengteng
+ * @description 针对表【resource_course_category】的数据库操作Service实现
+ * @createDate 2023-03-09 09:54:22
+ */
+@Service
+public class ResourceCourseCategoryServiceImpl extends ServiceImpl<ResourceCourseCategoryMapper, ResourceCourseCategory>
+        implements ResourceCourseCategoryService {
+
+    @Override
+    public List<Integer> getCourseIdsByCategoryIds(List<Integer> categoryIds) {
+        return list(query().getWrapper().eq("id", "category_id")).stream().map(ResourceCourseCategory::getCourseId).toList();
+    }
+
+    @Override
+    public void removeByCourseId(Integer id) {
+        remove(query().getWrapper().eq("course_id", id));
+    }
+
+    @Override
+    public void removeByCategoryId(Integer id) {
+        remove(query().getWrapper().eq("category_id", id));
+    }
+
+    @Override
+    public List<Integer> getCategoryIdsByCourseId(Integer courseId) {
+        return list(query().getWrapper().eq("course_id", courseId)).stream().map(ResourceCourseCategory::getCategoryId).toList();
+    }
+}
+
+
+
+

src/main/java/xyz/playedu/api/service/internal/ResourceCourseCategoryService.java

@@ -0,0 +1,22 @@
+package xyz.playedu.api.service.internal;
+
+import xyz.playedu.api.domain.ResourceCourseCategory;
+import com.baomidou.mybatisplus.extension.service.IService;
+
+import java.util.List;
+
+/**
+* @author tengteng
+* @description 针对表【resource_course_category】的数据库操作Service
+* @createDate 2023-03-09 09:54:22
+*/
+public interface ResourceCourseCategoryService extends IService<ResourceCourseCategory> {
+
+    List<Integer> getCourseIdsByCategoryIds(List<Integer> categoryIds);
+
+    void removeByCourseId(Integer id);
+
+    void removeByCategoryId(Integer id);
+
+    List<Integer> getCategoryIdsByCourseId(Integer courseId);
+}