Oh, you replied faster than I do. :)

Will check that one. Thanks a lot!

On Tue, Jul 28, 2009 at 8:30 PM, Eyston <[email protected]> wrote:

>
> http://www.nhforge.org/doc/nh/en/index.html#example-parentchild
>
> This is a good read.  In your specific case 19.3 talks about this:
> Cascading Lifecycle.
>
> You probably want inverse=true (since the child has many-to-one back
> to parent) and cascade = all-delete-orphan.
>
> On Jul 27, 9:26 pm, Ian Escarro <[email protected]> wrote:
> > I have an error in deleting a master/detail relationship. I have a
> > PurchaseOrder class and a PurchaseOrderItem class. These are the mapping.
> >
> > <?xml version="1.0" encoding="utf-8" ?>
> > <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
> >     namespace="Bogetz.Elephant.Model" assembly="elephant">
> >
> >     <class name="PurchaseOrder" table="purchase_orders">
> >         <id name="Id">
> >             <generator class="native"/>
> >         </id>
> >         <property name="Date"/>
> >         <many-to-one name="Vendor" class="Vendor" column="VendorId"/>
> >         <bag name="Items" cascade="all">
> >             <key column="POId"/>
> >             <one-to-many class="PurchaseOrderItem"/>
> >         </bag>
> >         <property name="PreparedBy"/>
> >         <property name="ApprovedBy"/>
> >         <property name="ReferenceNo"/>
> >     </class>
> >
> >     <class name="PurchaseOrderItem" table="purchase_order_items">
> >         <id name="Id">
> >             <generator class="native"/>
> >         </id>
> >         <many-to-one name="Order" class="PurchaseOrder" column="POId"/>
> >         <many-to-one name="Item" class="Item" column="ItemId"/>
> >         <property name="UnitPrice"/>
> >         <property name="Quantity"/>
> >         <property name="Amount"/>
> >     </class>
> >
> > </hibernate-mapping>
> >
> > and when I issue someSession.Delete(PurchaseOrder) it throws the
> exception
> > above. I need help in finding the things I missed. Thanks in advance.
> >
> > ---
> > Ian
> >
>


-- 
Ian Escarro

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