I have the cascade set to all-delete-orphan, maybe it should be all,delete-orphan that you have written or is it just an spelling error? :) I have tried to have an many-to-one relation on the InvoiceEntry but with no success, but I may have done an mistake, but am I really forced to have an relation on the child?
On Aug 12, 8:50 pm, Jason Dentler <[email protected]> wrote: > I am a bit confused about your question, but I'll answer the question I > think you asked > > You seem to be confusing inverse with cascade. The two are separate, almost > entirely unrelated concepts. I will assume you are talking about a > bidirectional one-to-many relationship where the many side is a set. > > You have > > public class Invoice > { > protected virtual ISet<InvoiceItem> Items { get; set; } > public virtual bool AddItem(Invoiceitem newItem) > public virtual bool RemoveItem(InvoiceItem itemToRemove) > > } > > public class InvoiceItem > { > public virtual Invoice Invoice { get; protected set; } > > } > > When mapping invoice's items collection, use cascade="all" (or better yet, > "all,delete-orphan") and inverse="true". > > Since the database only represents the one-to-many with the > [InvoiceItem].[InvoiceId] field, and the model represents each "side" of the > one-to-many with a reference, NHibernate will ignore one side. > inverse="true" means to look at invoiceItem.Invoice to fill > [InvoiceItem].[InvoiceId]. You should still keep both sides "in sync" in > your model. Don't be sloppy. > > Cascade means when NHibernate flush (insert/update/delete) the invoice, it > will automatically include each child invoice item. > > On Thu, Aug 12, 2010 at 11:07 AM, Niclas Pehrsson <[email protected]>wrote: > > > My dream scenario in code is to be able to do the following code. > > > var invoice = new Invoice(); > > invoice.AddEntry(new InvoiceEntry("Title", unitPrice, quantity); > > session.Save(invoice); > > > And then all the invoice entries will be saved with the invoice. > > > As I have read and tried that isn't the most efficient way to do it > > because then I will be forced to use inverse="false" cause if it would > > be true the entries would not be associated with the invoice. > > And if I use inverse="false" I will get some unnecessary Update > > queries. > > > Can NHibernate in any way do so I can do as my code example above and > > just take the Id (Guid) generated for the invoice and take with it in > > the insert queries for the entries? > > > -- > > 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]<nhusers%[email protected]> > > . > > For more options, visit this group at > >http://groups.google.com/group/nhusers?hl=en. -- 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.
