NHibernate:Lazyload单个属性 [英] NHibernate: Lazyload single property

问题描述

我目前已将博客引擎从Linq2Sql移到了NHIbernate.

I have currently moved my blogengine over from Linq2Sql to NHIbernate.

我陷入了以下性能问题: 我得到一个表:"Posts"，其中包含ID，标题，PostContent，DateCreated列等等.

I'm stuck at the following performance problem: I got one table: 'Posts', that has Id, Title, PostContent, DateCreated collumns and so on.

问题在于，当我创建最近帖子列表"时，我不希望整个PostContent.

The problem is that, when I'm creating the "Recent posts list", I don't want the whole PostContent.

在Linq2Sql中，您可以在单个属性上设置延迟加载，因此直到您真正请求该属性后，它才成为SQL查询的一部分.

In Linq2Sql you can set lazy loading on a single property, so it won't be part of the SQL query until you actually ask for the property.

我尝试通过Fluent NHibernate做到这一点:

I tried doing this with Fluent NHibernate, by doing this:

Map(x => x.PostContent).LazyLoad();

没有成功.到处搜寻，NHibernate似乎不支持此功能，所以我的问题是，如何解决此问题?

It didn't work out. Googling around, it seems that NHibernate doesn't support this, so my question is, how can I fix this?

在不将内容移动到单独的表的情况下，是否真的不可能延迟加载我的属性?

Is it really not possible to lazy load my property without moving the content to a seperate table?

提前谢谢！

推荐答案

更新:此功能现已在NHibernate干线中提供.

Update: this capability is now available in the NHibernate trunk.

有关详细信息，请参见 Ayende的博客，其中的样本恰好是您在此描述的情况的.

See details on Ayende's blog, where the sample is exactly the scenario you describe here.

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