Please open an issue at donjon, I'll add a guard clause in the AR-initialization.
-Markus 2009/7/16 Jimmy Shimizu <[email protected]> > Thanks for your reply. > > The initialization of the IList was not the issue, I actually initialized > it upon population therefor it didn't issue an exception for it (I have > however rewritten it now). > > The fact remains though, and I seem to have nailed down what causes it. If > I add "Index" to the HasMany-attribute, it magically works. Seems like it > cannot automatically generate the index-column, nor any name for it, > therefore NHibernate throws the IndexOutOfBoundException. > > [HasMany( > typeof( CartDiscount ), > Access = PropertyAccess.FieldCamelcase, > Cascade = ManyRelationCascadeEnum.All, > RelationType = RelationType.List, > Index = "order_index" > )] > > However, I tried finding any mentioning of this in the documentation but > couldn't find any, and preferrably it should throw an understandable > exception if "Index" is missing when using a List or Map relationtype, if it > isn't generated by default. Hopefully this post will help someone in the > future, and I try filing a bug-report. > > > > > Markus Zywitza wrote: > > If you put the HasMany on the IEnumerable, NH tries to add things to the > IEnumerable. I think the error is an NH bug, because the value is not tested > against null before checking the character. Nonetheless, your approach won't > function. > > Use instead a protected or private IList for mapping and create a public > IEnumerable that reads that IList. You should also initialize the backing > field with a List. NH doesn't know what implementation of IList you want, > you could have even rolled your own! > > So this should work: > private IList<CartDiscount> _applicableDiscounts = new > List<CartDiscount>(); > > [HasMany( > typeof( CartDiscount ), > Access = PropertyAccess.FieldCamelcase, > Cascade = ManyRelationCascadeEnum.AllDeleteOrphan, > RelationType = RelationType.List > )] > protected IList<CartDiscount> _ApplicableDiscounts { .... } > > public IEnumerable<CartDiscount> ApplicableDiscounts { get { return > _ApplicableDiscounts;} } > > -Markus > > 2009/7/15 Jimmy Shimizu <[email protected]> > >> Hi, I came across an issue when mapping an HasMany-collection. >> >> with the following code: >> >> private IList<CartDiscount> applicableDiscounts; >> >> [HasMany( >> typeof( CartDiscount ), >> Access = PropertyAccess.FieldCamelcase, >> Cascade = ManyRelationCascadeEnum.AllDeleteOrphan, >> RelationType = RelationType.List >> )] >> public IEnumerable<CartDiscount> ApplicableDiscounts { .... } >> >> >> My app fails to start with the following exception: >> >> [IndexOutOfRangeException: Index was outside the bounds of the array.] >> NHibernate.Mapping.Column.set_Name(String value) in >> c:\CSharp\NH\nhibernate\src\NHibernate\Mapping\Column.cs:85 >> >> >> >> Looking at the sourcecode, I see this: >> >> >> public string Name >> { >> get { return name; } >> set >> { >> 85: if (value[0] == '`') >> >> >> >> and when debugging, I see that value is actually an empty string. however, >> if I change the RelationType on the collection to "Set", the problem goes >> away. Why is that? Is it trying to add some secret column which doesn't get >> a name correctly or something? >> >> Maybe this should go to NH-list instead, but it's partly an >> ActiveRecord-issue. >> >> What is the default RelationType for a generic IList<>? Bag or List? >> >> >> > > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Castle Project Users" 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/castle-project-users?hl=en -~----------~----~----~----~------~----~------~--~---
