As cliff said, one to many relations should be implemented as bidirectional, so, transaction class should have a reference to Order class, in the addtransaction method add the bidirectional links whit tx.order = this, if the mapping of transaction is well defined it should make the trick,
gianluca On Thursday, April 15, 2010, cliff vaughn <[email protected]> wrote: > based on your mapping, 'inverse=true' would prevent the order from having > responsibility to save the transaction. in the AddTransaction method, you > would need to do "tx.Order = this; > > > On Thu, Apr 15, 2010 at 8:12 AM, ben <[email protected]> wrote: > > I have recently started learning NHibernate and am struggling to find > documentation on how to handle updates in a set. > > For example, I have an order object with a one to many relationship to > transaction. My transaction table has a foreign key OrderId. The xml > for my mapping is: > > <set name="Transactions" table="Transactions" inverse="true" > lazy="false"> > <key column="OrderId"/> > <one-to-many class="Transaction"/> > </set> > > What I would like to do is to add transactions like so: > > Order order = repo.GetById(id); > Transaction tx = new Transaction(); > order.AddTransaction(tx); > repo.Update(order); > > When I issue ISession.Update I would expect that any new transactions > added to the Order object are saved to the database (via an insert > command). > > In order to achieve this I set the cascade attribute for the above > set. > > However, in addition to adding any new transactions an update command > is issued for every existing transaction (I have checked in NHProf and > an update command is generated for each transaction setting all > columns to the original values). > > Have anyone got an example (or perhaps a link) to an example that > demonstrates how this should work? > > -- > 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. > > > > -- > thanks > > cliff > > > -- > 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. > -- Gianluca Gravina http://blogs.ugidotnet.org/thinkingingrava -- 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.
