Question

我有以下代码：

  // setup
  var sessionFactory = SessionManager.CreateSessionFactory(true);

  // business
  using (var session = sessionFactory.OpenSession())
  {
    using (var tran = session.BeginTransaction())
    {
      var user1 = new UserDto() {Email = "e1@ma.il", FirstName = "FN1", LastName = "LN1"};
      var user2 = new UserDto() {Email = "e2@ma.il", FirstName = "FN2", LastName = "LN2"};

      var projType1 = new ProjectTypeDto() {ProjectTypeName = "ptn1", ProjectTypeDescription = "ptd1"};

      var timeSheet1 = new TimeSheetDto(){ Comment = "c1", User = user1, ProjectType = projType1 };
      var timeSheet2 = new TimeSheetDto(){ Comment = "c2", User = user2, ProjectType = projType1 };

      session.SaveOrUpdate(timeSheet1);
      session.SaveOrUpdate(timeSheet2);

      tran.Commit();
    }
  }

打破了“tran.Commit（）;”线。

Exception表示timeSheet引用NotExistent用户。（很明显）

如何自动添加所有相关对象？

我正在使用以下映射：

  public class TimeSheetMap : ClassMap<TimeSheetDto>
  {
    public TimeSheetMap()
    {
      Id(x => x.Id);
      Map(x => x.StartTime);
      Map(x => x.EndTime);
      Map(x => x.Comment);
      References(x => x.User).Cascade.All();
      References(x => x.ProjectType).Cascade.All();
    }
  }

Answer 1

您需要使用inverse将一侧声明为父级，否则保存双方。尝试将时间表地图链接到：

  public class TimeSheetMap : ClassMap<TimeSheetDto>
  {
    public TimeSheetMap()
    {
      Id(x => x.Id);
      Map(x => x.StartTime);
      Map(x => x.EndTime);
      Map(x => x.Comment);
      References(x => x.User).Cascade.All().Inverse();
      References(x => x.ProjectType).Cascade.All().Inverse();
    }
  }

FluentNHibernate - 级联插入

1 个答案: