Hi,
After resolving my issue with navigation to referenced entities (thanks
Ricardo), I am now testing possibility to fetch in OData only referenced
entities. The following query fetches main entity and it's Products
relation:
Categories.Expand("Products").Where(c => c.CategoryID == 1)
(corresponds to
http://localhost:50555/NorthwindEntityFrameworkModelFirstMsSql.svc/Categories(1)?$expand=Products
)
This is not what I want: I only need Products. I don't want to do projection
on the client.
When using Entity Framework, I can use the following (weird) C# syntax in
client code:
from c in Categories.Where(c => c.CategoryID == 1) select new { Products =
c.Products }
But this does not work in NHibernate! I am getting NotImplemented exception:
<message xml:lang="nb-NO">Not Implemented</message>
<innererror>
<message>([100001] As Categories)</message>
<type>System.NotSupportedException</type>
...
</message>
And using Expand("Products") does not seem to support projections:
Categories.Expand("Products").Where(c => c.CategoryID == 1).Select(x =>
x.Products) results in "The method 'Select' is not supported." both for
NHibernate and Entity Framework.
Do you know about any workaround for this that will work in NHibernate?
Thanks in advance
Vagif
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