/// <summary>
/// 取消写生排课
/// <para>作 者：郭伟佳</para>
/// <para>创建时间：2018-11-28</para>
/// </summary>
/// <exception cref="AMS.Core.BussinessException">
/// 异常ID：
/// 13. 系统不存在该写生课信息
/// 14. 该学期已结束，不可取消
/// 34. 写生课已取消
/// </exception>
public void Cancel()
{
lock (LocalThreadLock.GetLockKeyName(LockKeyNames.LOCK_LIFE_CLASS, _lifeClassId.ToString()))
{
var lifeClassInfo = _repository.Value.GetLifeClassInfo(_lifeClassId);
//1、根据写生课Id，获取写生课对应的课次基础信息的课程Id列表
var studentLessonInfoList = _timLessonRepository.Value.GetStudentLessonListAsync(_schoolId, new List <long> {
_lifeClassId
});
var lessonIdList = studentLessonInfoList.Where(a => a.Status == (int)LessonUltimateStatus.Normal).Select(a => a.LessonId).ToList();
//2、校验
CheckDataBeforeCancel(lifeClassInfo, lessonIdList);
using (UnitOfWork unitOfWork = new UnitOfWork())
{
try
{
unitOfWork.BeginTransaction(IsolationLevel.Snapshot);
//3、取消写生课Id对应的所有学生的课次
CancelLifeClass(unitOfWork, lifeClassInfo, lessonIdList);
//4、删除对应的写生课
TblTimLifeClassRepository lifeClassRepository = unitOfWork.GetCustomRepository <TblTimLifeClassRepository, TblTimLifeClass>();
lifeClassRepository.DeleteLifeClassById(_lifeClassId);
unitOfWork.CommitTransaction();
}
catch (Exception ex)
{
unitOfWork.RollbackTransaction();
throw ex;
}
}
}
}