NHibernate QueryOver与ManytoMany [英] NHibernate QueryOver with ManytoMany
本文介绍了NHibernate QueryOver与ManytoMany的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在学习QueryOver,但是我一生都无法弄清楚如何进行简单的多对多查询.
I'm in the process of learning QueryOver, but I can't for my life figure out how to do simple many to many queries.
我写了以下内容:
var result = Session.CreateCriteria(typeof (Product))
.CreateAlias("Categories", "categories")
.Add(Property.ForName("categories.Id").Eq(categoryId))
.List<Product>();
这可以达到预期的效果.基本上我有
This achieves the desired result. Basically I have
产品> ProductCategory<类别
Product > ProductCategory < Category
ProductCategory仅具有ProductId/CategoryId,我正在尝试选择特定类别中的所有产品.
ProductCategory just has ProductId / CategoryId, and I'm trying to select all the products in a specific category.
我不知道从哪里开始尝试使用queryover.
I have no idea where to start with trying to do this with queryover.
推荐答案
在坚持不懈之后,我终于解决了这个问题.
I ended up resolving this after a lot of perseverance.
var result = Session.QueryOver<Product>()
.Right.JoinQueryOver<Category>(x => x.Categories)
.Where(c => c.Id == categoryId)
.List();
什么任务:)
这篇关于NHibernate QueryOver与ManytoMany的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文