Your mapping is correct.
You have to explicitly set the in-memory object relationships in both
directions.
The usual way to do this is add a method to ClassA:
public void AddB(ClassB b)
{
MyList.Add(b);
b.referenceToParent = this;
}
If you are directly assigning a List<ClassB> to MyList, then override the
setter to iterate over the list and assign referenceToParent on each B.
In either case, calling session.Save(classAinstance) should correctly
insert/update A first and all the B's later.
Diego
On Tue, Nov 24, 2009 at 08:23, eigeneachse <[email protected]>wrote:
> h...@all,
> i have the following configuration.
>
> ClassA{
> ....
> IList<ClassB> MyList.......
> ...........
> }
>
> ClassB{
> ....
> ClassA referenceToParent
> ....
> }
>
> And my hibernateconfig is as follows.
> ClassA
> <bag name="ClassB" lazy="true" cascade="all" inverse="true">
> <cache region="10Minutes" usage="read-write" />
> <key column="CLASSA_ID" />
> <one-to-many class="ClassB, InMyProject" />
> </bag>
>
> and in ClassB
> <many-to-one name="ClassA" class="ClassA, InMyProject"
> column="CLASSA_ID" />
>
> ( i hope these few informations are enough for you)
>
> So now my problem.
> I create a new ClassA object and bind a list of new ClassB objects to
> ClassA. When i save and flush the session, then nhibernate saves all
> my ClassB objects to my db, but WITHOUT the ParentKey to ClassA. If i
> configure the one-to-many relation to inverse=false, then nhibernate
> first inserts into the classB-Table and then updates the reference to
> ClassA. But when i want to allow this, then its necessary to have the
> foreign key in classb to ClassA nullable. But i dont want this.
>
> Is there a solution how to tell hibernate to set the parent id in the
> first insert statement without having an update statement afterwards?
>
> I hope you can help me.
> Thanks in advance
>
> Regards
>
> eigeneachse
>
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