How to eager load in WCF Ria Services/Linq2SQLDomainModel

I have a databound grid at my view (XAML) and the Itemsource points to a ReportsCollection. The Reports entity has three primitives and some complex types. These three are shown as expected at datagrid. Additionally the Reports entity has a property of type Store. When loading Reports via GetReports domain method, I quickly figure out that only primitives开发者_Python百科 are returned and not the whole graph of some depth. So, as I wanted to load the Store property too, I made this alteration at my domain service:

public IQueryable<Report> GetReports()
{
    return this.ObjectContext.Reports.Include("Store");
}

From what I see at the immediate window, store is loaded as expected, but when returned to client is still pruned. How can this be fixed?

Thank you!

Decorate the Store property in the ReportMetadata class with [Include].

[MetadataTypeAttribute(typeof(Report.ReportMetadata))]
public partial class Report
{
    internal sealed class ReportMetadata
    {
        [Include]
        public Store Store;
    }
}