im afraid i confused the issue by using IList<Term>. Actually the collection type does not matter (to me at least). The issues is that this is a bidirectional many-many where deciding choosing an inverse side is probably impossible.
Consider that if TermA is related to TermB, then the reverse is true (for my application), so in the mapping table, you can have either termA_id, termB_id or termB_id, termA_id i think that adding and removing items may have to be handled at the repository level. On Jan 8, 10:33 am, "Fabio Maulo" <[email protected]> wrote: > If the order is an integer the <list> mapping is the right way.For some > special stuff you can use <map> to a field and expose something else than a > IDictionary. > If what you need is a sorted ISet, IDictionary by a specific > entity-property, even using a custom comparer, you can use the "sort" > attribute or the "sort" and "collectio-type" attributes. > > 2009/1/8 Jimboyoo <[email protected]> > > > > > > > I'm still learning my way around NHibernate myself, but I was JUST > > trying to do this yesterday! After some looking around, I was able to > > do exactly what you are trying to achieve. > > I'm not sure if the IList<Term> will work though, maybe it will. I > > always have better luck working with ISet<>, and have my mappings use > > SETS. > > > You stated that "mapping this is easy", but that's the most important > > thing, and that's what took me so long to figure out. But If you have > > it mapped correctly to your DB then it'll behave exactly the way you'd > > expect. You can treat it like this: > > > Term a = new Term(1, "Term A"); > > Term b = new Term(2, "Term B"); > > > a.RelatedTerms.add(b); > > > Happy programming! > > > On Jan 7, 11:15 am, ccollie <[email protected]> wrote: > > > Hello, > > > is it possible to cleanly handle a self-referential many-many ? > > > Here's the scenario : > > > > public class Term > > > { > > > public int id {get; set} > > > public String Name {get; set;} > > > public IList<Term> RelatedTerms {get; set;} > > > > } > > > > Mapping this is easy enough, though i dont think id get the required > > > semantics r.e. adding and removing related items. > > -- > Fabio Maulo --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
