OpenAccess uses the Expression Tree framework provided by Microsoft in .Net Framework. We are not providing the feature you are requesting. There are several open-source projects that aim to make .Net Expression Trees serializable. You can take a look at this discussion
I would like to propose a different approach for your scenario.
You can try OData
-enabled services that support query LINQ-like queries that are expressed through the URL address of the request.
Your first choice can be Microsoft Data Services v5.0
(or after Q1 2013 release of OpenAccess you can use the latest version 5.2
). There you will be able to use a client side mirror of your database context, query against it and have your queries executed on the server (and database server) side. This technology is mature and has wide adoption.
The other option that you can consider is Web API
. The approach is similar to Data Services
, but you are not restricted to using only entity types described in a context, but any type or method that you like.
Please let me know if you need more information or need any further assistance getting started with Data Services
or Web API
the Telerik team
Q3'12 SP1 of OpenAccess ORM packs Multi-Table Entities mapping support. Check it out.