假設我只有兩個類:組和用戶。用戶擁有羣組並且羣組擁有成員(用戶實例)使用NHibernate不會更新多個屬性
public class User {
public virtual int id { set; get; }
public virtual string username { set; get; }
public virtual IList<Group> groups { set; get; }
public User()
{
groups = new List<Group>();
}
public virtual void joinGroup(Group group)
{
if (this.groups.Contains(group))
throw new AlreadyJoinedException();
group.members.Add(this);
this.groups.Add(group);
}
public class Group
{
public virtual int id { set; get; }
public virtual string name { set; get; }
public virtual User administrator { set; get; }
public virtual IList<User> members { set; get; }
public Group()
{
members = new List<User>();
}
正如您所見,域名非常簡單。我已經正確使用功能NHibernate,
public class UserMapping : ClassMap<User>
{
public UserMapping()
{
this.Id(user => user.id).GeneratedBy.Identity();
this.Map(user => user.username).Not.Nullable().Length(50).Not.LazyLoad();
this.HasManyToMany(user => user.groups).Table("MemberPerGroup").ParentKeyColumn("id_user").ChildKeyColumn("id_group").Not.LazyLoad();
}
}
public class GroupMapping : ClassMap<Group>
{
public GroupMapping()
{
this.Id(group => group.id).GeneratedBy.Identity();
this.Map(group => group.name).Not.Nullable().Length(50).Not.LazyLoad();
this.References(group => group.administrator).Not.Nullable().Not.LazyLoad();
this.HasManyToMany(group => group.members).Table("MemberPerGroup").ParentKeyColumn("id_group").ChildKeyColumn("id_user").Not.LazyLoad();
}
}
我預設電臺使用ASP MVC 4 Web應用程序我的問題顯示出來,當用戶試圖加入組已經映射兩類。它不會中斷,但它不能正常工作(不會在MemberPerGroup中將新行插入表中)。我正在做類似的事情:
public void JoinGroup(User user,Group group){
this.userRepository.GetSessionFactory().TransactionalInterceptor(() =>
{
user.joinGroup(group);
});
}
在此先感謝。
Ivan。