I would like to Cascade Save operation from Parent to Child without
using the bi-directional relation of having the parent represented as
a property in the Child through Many-to-One relation. Using the class
Order - Orderline example i have setup relation such that
Order.LineItems is defined as a One-to-Many bag with inverse =true.
<bag cascade="save-update" inverse="true" lazy="true"
name="LineItems">
<key>
<column name="OrderId" />
</key>
<one-to-many class="OrderLine" />
</bag>
However my OrderLine does not have a relation to Order, but just the
OrderId property
<property name="OrderId"/>
Until now i was able to manage with the help of method in Order called
AddLineItem which adds the OrderLine to LineItems collection and also
set the OrderId on the OrderLine. But this approach does not work if
the Order itself is new since OrderId is 0.
public virtual void AddLineItem(OrderLine item)
{
item.OrderId = Id;
LineItems.Add(item);
}
Is there any other approach to do cascade inserts without the
bidirectional relation. I want to avoid having bidirectional so that
the Order reference on the child is not used.
Regards
Dinesh
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