My Silverlight 4 Reference Architecture: Querying 

After having put the introduction and the commanding part behind us, let me explain how I deal with querying. Consider the following slice of the reference architecture. 

My original intention was to use WCF Data Services combined with NHibernate on the query side. For one, because it allows you to filter the result set using a subset of the LINQ functionality at the Silverlight client. But also because it will transfer the resulting entity set including any associated relationships as one network operation; which is something that WCF RIA Services can't do. In essence it means that you don't have to explicitly convert entities to DTOs, but I kept the term in the diagram.

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