鉴于团队 - >运动员关系和查询所有运动员。什么
我误解了fetch="Join"
吗?该映射是否应该导致
通过加入加载团队?当迭代运动员时,它
仍懒得加载团队。
public class AthleteMap : ClassMapping<Athlete>
{
public AthleteMap()
{
ManyToOne(a => a.Team, o =>
{
o.Fetch(FetchKind.Join);
o.Lazy(LazyRelation.NoLazy);
}
);
}
}
产生这个HBM:
<class name="Athlete" table="Athletes">
<id name="Id" type="Int32" />
<property name="FirstName" />
<property name="LastName" />
<many-to-one name="Team" fetch="join" lazy="false" />
<property name="Created" />
</class>
迭代:
var session = factory.OpenSession();
foreach (var athlete in session.Query<Athlete>())
Console.WriteLine("{0} {1}", athlete.FirstName, athlete.Team.Name);
答案 0 :(得分:13)
NHibernate Linq Query不使用映射的获取策略。你必须像你这样在你的linq查询中获取()。
var session = factory.OpenSession();
foreach (var athlete in session.Query<Athlete>().Fetch(x => x.Team))
Console.WriteLine("{0} {1}", athlete.FirstName, athlete.Team.Name);
映射文档中定义的获取策略会影响: