update

mec-biz/src/main/java/com/ym/mec/biz/service/impl/ClassGroupServiceImpl.java

@@ -3829,15 +3829,17 @@ public class ClassGroupServiceImpl extends BaseServiceImpl<Integer, ClassGroup>
         //解冻班级
         classGroupIds.add(masterClassGroupId);
         classGroupDao.batchUpdateLockByClassGroupIds(classGroupIds,0);
-        //获取没有学员的课程
-        List<Long> delCourseIds = courseScheduleDao.findNoStudentCourseIds(courseIds);
-        if (delCourseIds != null && delCourseIds.size() > 0) {
-            //删除课程
-            courseScheduleDao.deleteCourseSchedulesByClassGroupIds(delCourseIds);
-            //删除教师考勤
-            teacherAttendanceDao.batchDeleteByCourseSchedules(delCourseIds);
-            //删除教师课酬
-            courseScheduleTeacherSalaryDao.batchDeleteByCourseScheduleIds(delCourseIds);
+        if(courseIds.size() > 0){
+            //获取没有学员的课程
+            List<Long> delCourseIds = courseScheduleDao.findNoStudentCourseIds(courseIds);
+            if (delCourseIds != null && delCourseIds.size() > 0) {
+                //删除课程
+                courseScheduleDao.deleteCourseSchedulesByClassGroupIds(delCourseIds);
+                //删除教师考勤
+                teacherAttendanceDao.batchDeleteByCourseSchedules(delCourseIds);
+                //删除教师课酬
+                courseScheduleTeacherSalaryDao.batchDeleteByCourseScheduleIds(delCourseIds);
+            }
         }
     }