SubSonic 3.0 中的关系和延迟加载 [英] Relationships and Lazy Loading in SubSonic 3.0

问题描述

我目前正在使用 SubSonic 3.0，它看起来非常简单(除了我仍然需要在 SimpleRepository 和 ActiveRecord 之间做出决定，但那是另一回事了).

I'm playing around with SubSonic 3.0 at the moment, and it looks really straight-forward (except that I still have to decide between SimpleRepository and ActiveRecord, but that's another story).

但是，由于文档有点稀疏，我不确定它是否支持对外关系和延迟加载.基本上，我有一个班级帖子:

However, as the documentation is a bit sparse, I am not sure if it supports foreign-relationships and lazy-loading. Essentially, I have a class posting:

public class Posting {
    [SubSonicPrimaryKey]
    public Guid InternalId { get; set; }
    public string Title { get; set; }
    public string Body { get; set; }
    public DateTime? PostingDate { get; set; }
    public List<Comment> Comments { get; set; }
}

和一个班级评论:

public class Comment
{
    public string Body { get; set; }
}

如您所见，发布有一个评论列表.我能以某种方式告诉 SubSonic 这两者是相关的吗?那就是我保存帖子的时候可以自动保存所有的评论?更重要的是，当我加载帖子时，我希望评论列表一开始是空的，然后说好的，请现在填写".

As you see, Posting has a List of Comments. Can I somehow tell SubSonic that these two are related? That is that I can automatically save all Comments when I save the Post? And more importantly, when I load a Posting, I'd like the List of Comments to be empty at first, and at some point say "Okay, please populate it now".

我知道我可以在代码中手动管理它，但我只是想在我进行手动工作之前知道 SubSonic 是否可以做到这一点.

I know I can manually manage this in Code, but I just like to know if SubSonic can do that before I do the manual work.

推荐答案

稀疏?你读过吗?

ActiveRecord 可以根据 FK(Linq 模板也可以)确定您的关系，并将使用 IQueryable.因此，您可以两全其美 - 如果您需要它们，它们就在那里.

ActiveRecord can determine your relationships based on FKs (so can the Linq Templates) and will use IQueryable. So you get the best of both worlds - they're there if you need them.

如果您使用 Simple Repo - 不 - 这不会发生，而且都是手动操作.

If you use Simple Repo - no - this doesn't happen and it's all manual.

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