如何在 NHibernate 中手动创建详细信息收集代理
我有类,让它成为 Foo:
public class Foo
{
...
protected MyCollection<Detail> _details
public virtual MyCollection<Detail> Details
{
get { return _details ?? new MyCollection<Details>(); }
set { _details = value; ... }
}
...
}
public class Detail {...}
当我执行 LINQ 查询时:
var q = session.Query<Foo>().Select(foo => new Foo( property1 = foo.property1, ... );
...
q.ToList();
我在 _details 字段中有 NULL,当我访问 详细信息< /em> 获取所有 Lazy 详细信息,当然我得到 new MyCollection(),但不是 IPercientBag(或者 IPercientCollection)。
那么如何手动创建代理集合(我有 session / sessionFactory 引用)?
[已添加] 这是映射(在 Foo 上):
<bag name="Details" lazy="true" collection-type="NHibernateDataService.DetailBag`1[[DataObjects.Detail, DataObjects]], NHibernateDataService" cascade="all-delete-orphan" fetch="select" batch-size="1" access="property" inverse="true">
<key column="`Master`" />
<one-to-many class="DataObjects.Detail" />
</bag>
谢谢!
I've got class, let it be Foo:
public class Foo
{
...
protected MyCollection<Detail> _details
public virtual MyCollection<Detail> Details
{
get { return _details ?? new MyCollection<Details>(); }
set { _details = value; ... }
}
...
}
public class Detail {...}
When I do LINQ query:
var q = session.Query<Foo>().Select(foo => new Foo( property1 = foo.property1, ... );
...
q.ToList();
I've got NULL in _details field, and when I access to Details to get all Lazy details, of course I get new MyCollection(), but not IPersistentBag (or else, IPersistentCollection).
So How can I manually create proxy collection (I've got session / sessionFactory references)?
[ Added ] here is the mappings (on Foo):
<bag name="Details" lazy="true" collection-type="NHibernateDataService.DetailBag`1[[DataObjects.Detail, DataObjects]], NHibernateDataService" cascade="all-delete-orphan" fetch="select" batch-size="1" access="property" inverse="true">
<key column="`Master`" />
<one-to-many class="DataObjects.Detail" />
</bag>
Thank you!
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MyCollection 无法映射到 IPercientBag,当然,除非您在 MyCollection 上实现该接口(并且可能显式设置映射类型??)...
更标准的方法是在bag 映射到自定义类型 - IUserCollectionType 的实现,您可以选择创建 MyCollection 派生自的基类。
MyCollection can't be mapped to IPersistentBag, unless, of course, you implement that interface on MyCollection (and probably set the mapping type explicitly??)...
A more standard approach is to set the "collection-type" property on the bag mapping to a custom type - an implementation of IUserCollectionType, which you can choose to make a base class that MyCollection derives from.