Graphdiff正在删除实体

Question

我有以下实体：

public class Profile
{
    [Required]
    public string Name { get; set; }

    [Required]
    public string Description { get; set; }

    [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int ID { get; set; }

    public IList<Functionality> Functionalities { get; set; }
}  

和

public class Functionality
{
    [Required]
    public string Name { get; set; }

    [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int ID { get; set; }
}  

在我的服务方法中，当我尝试以下操作时，它会从数据库中移除配置文件功能列表中没有的功能对象：

(...)
var databaseFunctionalities = this
                             .Repository
                             .GetByIds<Functionality>(profile
                                                     .Functionalities
                                                     .ToIdList());
profile.Functionalities.Clear();
profile.Functionalities.AddRange(databaseFunctionalities);

((BaseRepository)this.Repository)
.UpdateGraph(profile,map => map.OwnedCollection(p => p.Functionalities));
this.Repository.SaveChanges();  
(...)  

对此有什么想法吗？

谢谢!

Answer 1

阅读完后找到了一个解决方案，并在本文中解释了关联和拥有之间的差异：

https://github.com/refactorthis/GraphDiff/issues/43

所以我改变了

((BaseRepository)this.Repository)
    .UpdateGraph(profile,map => map.OwnedCollection(p => p.Functionalities));
this.Repository.SaveChanges();  

至

((BaseRepository)this.Repository)
    .UpdateGraph(profile,map => map.AssociatedCollection(p => p.Functionalities));
this.Repository.SaveChanges();  

就像一种魅力！