That is actually a limitation of the RIA wizard itself. The default mapped tables actually does not live in the model and as such they cannot be displayed in the ria wizard. This problem has been fixed in our new version of the RIA wizard that will be shipped with our next service pack.
What you can do is add the domain service without selecting any endpoints. This will create a class that will inherit from our domain service implementation. You can than edit the tt template to add the classes you need to generate. Here is an example:
string fileName = "DomainService1";
string contextTypeName = "EntitiesModel";
string contextNamespaceName = "ConsoleApplication111";
string queriableTypesInput = "Category;Product";
string queriableClassNamesInput = "Categories;Products";
string queriableTypes = null;
string queriableClassNames = null;
string editableEndPoints = "Category";
where queriableTypesInput are the types you want to generate, queriableClassNamesInput are the endpoints. Please note that the type names and the endpoint names should be in the same order. Also if you want your classes to be editable you will have to add their type in the editableEndPoints string.
The above example will generate endpoints for Category and Products where only the Category endpoint will be editable.
All the best,
the Telerik team
Q1’11 SP1 of Telerik OpenAccess is available for download
; also available is the Q2'11 Roadmap
for Telerik OpenAccess ORM.