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 --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nhusers?hl=en -~----------~----~----~----~------~----~------~--~---
