删除courseCategory该用resource_category

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();
+    }
+}
+
+
+
+