Have you looked at InterLinq? It is a way of serializing linq queries.
Instead of exposing a bunch of ugly repository methods, you only have
to expose Query of T. You can use an interceptor to fake the generic
method on the client proxy:

[OperationContract]
IQueryable RealQuery(string typeName)

IQueryable[of T] Query[of T]()

I went this way in my current project... I ended up scrapping it
because I had no need for n tier with wcf.

On Jun 17, 5:08 am, Craig Neuwirt <[email protected]> wrote:
> Thanks for all of your feedback.  It's been very helpful.   Currently, there
> is no performance issue with respect to data access.  I am a big fan of
> databinding to domain model, but the client wants to remove all access to
> the db in the DMZ.  Messaging will certainly replace the workflow aspects of
> the app so I was trying to minimize the types of communication from the app
> layer.  I agree messaging is not really optimal for data querying,but I so
> don't look forward to having to define a bunch  of data contracts to
> represent the query results.
> Thanks again,
>   craig
>
> On Wed, Jun 17, 2009 at 2:37 AM, rg <[email protected]> wrote:
>
> > Craig, I would think twice about replacing synchronous communication
> > between web frontend and backend with async messaging. Probably this
> > will lead to major redesign of the system, besides you will have to
> > store local state somewhere in the web application (because messages
> > arrive asynchronously) and use polling at the client (javascript?) to
> > detect state changes. What good will it do to the application? For
> > sure it will complicate the web application and the browser javascript
> > code, it also might improve overall performance (or decrease it as
> > well) - of course if there was any performance problem at first. If
> > performance is the issue you should do some profiling to spot the
> > problem - probably the database access is the slowest and least
> > scalable part of the system, so using async messaging in the layers
> > above db will not change anything in query performance.
> > Rafal
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