Could not determine the reverse association

Hey guys,

While working on a project, my domain model became a bit huge, so I decided to split it into separate files and use the entity linking feature.

http://www.freeimagehosting.net/udsd7 (a fragment of my domain model)

While writing unit tests of a repository, I started to get the following exception

Mindscape.LightSpeed.LightSpeedException : Could not determine the reverse association of [UserInBillingEntity.User (User)] at Mindscape.LightSpeed.Model.AssociationModel.€(TypeModel ) at Mindscape.LightSpeed.Model.TypeModel.LoadFields(IEnumerable1 typeModels) at Mindscape.LightSpeed.Model.TypeModel.GetTypeModel(Type type) at ..€(Query , IList ) at Mindscape.LightSpeed.UnitOfWork.Find(Query query, IList results) at Mindscape.LightSpeed.UnitOfWorkBase.Find(Query query) at Mindscape.LightSpeed.Linq.Plan.SingleQueryPlan.ExecuteImmediate(IUnitOfWork unitOfWork, Type returnType) at Mindscape.LightSpeed.Linq.LinqQueryProvider.Execute(Expression expression) at Mindscape.LightSpeed.Linq.LinqQueryProvider.System.Linq.IQueryProvider.Execute(Expression expression) at Mindscape.LightSpeed.Linq.LinqQuery1.GetEnumerator() at System.Linq.Buffer1..ctor(IEnumerable1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable1 source) at ICode.Domain.UnitTests.Domain.Repositories.RepositoryFixtureBase.GetAll[T](IQueryable1 source, Expression`1 selector)

I'm not sure what's causing this, I'd apreciate some help. PS. Please note that I haven't updated LS in a while - so if this is a known issue that has already been fixed - I'll update.

Make sure you have the entities which are linking to User set up as linked entities in the model file where User is actually defined. The code gen for the User class is presumably missing these associations and that is leading to the error you are seeing.

Have a read through http://www.mindscapehq.com/documentation/lightspeed/Working-with-Models-in-the-Visual-Designer/Linked-Models for more detail about the steps you need to take when spanning associations across linked models.

Jeremy

Hey Jeremy, cheers for the reply, I'll try that, thanks.

(edit)

Ok, I think I understand now. Btw, doesn't that beat the purpose of splitting the model into separate files? Wouldn't it be possible to have the entity linking feature + associations without the step you've described?

Its not ideal but unfortunately this is just a limitation with how we are able to code generate the model files so for now you will need to define the links within both models. If you dont have many entities spanning the boundary it makes more sense, but if you have a highly connected model you will probably find sticking to a single model more practical.

Jeremy

Yeah, my model was split into 5 files :/ I had to revert. This is going to the wishlist soon (tm) :P