[英]NHibernate component with a one-to-many relation from parent
Say I have a Queue table and a Job table. 说我有一个队列表和一个工作表。 In the Job table there is a foreign key column QueueId for the Queue table, ie
在Job表中,Queue表有一个外键列QueueId,即
Queue.Id <-- Job.QueueId
Queue.Id <-Job.QueueId
Using Fluent NHibernate it is pretty straightforward to map this to a property in the Queue class, ie 使用Fluent NHibernate,将其映射到Queue类中的属性非常简单,即
/* QueueMap */
HasMany(x => x.Jobs)
.KeyColumnNames.Add("QueueId");
But assume I have a very good reason to have a class inbetween, say something like: 但是假设我有一个很好的理由让他们之间有一个班级,比如说:
public class Queue
{
public Group Group { get; set; }
}
public class Group
{
public IList<Job> Jobs { get; private set; }
}
Then I need to map this using a Component, ie 然后我需要使用一个组件来映射它,即
/* QueueMap */
Component(
x => x.Group,
y => y.HasMany(x => x.Jobs).KeyColumnNames.Add("QueueId")
);
When I do this I get the following: 当我这样做时,我得到以下信息:
{"could not initialize a collection:
[Queue.Group.Jobs#832fc413-c282-48e8-8cb6-d2a70b0b8de4]
[SQL: SELECT values0_.QueueId as QueueId1_, values0_.Id as Id1_, values0_.Id
as Id16_0_, (....) FROM dbo.Jobs values0_ WHERE values0_.QueueId=?]"}
Any idea as to what I'm doing wrong... 关于我在做什么错的任何想法...
Solved. 解决了。 This was caused by a mapping problem in the JobMap.
这是由JobMap中的映射问题引起的。
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