Exam 70-487 topic 1 question 3 discussion

DRAG DROP -
You are developing a WCF Data Services service in Visual Studio to display movie information from a SQL Server database that changes every 24 hours. The service is defined in the following class.

The application contains the following Entity Framework model.

The service must only return data for movies that are currently in theaters.
You need to add a method to the MovieService class to filter the data.
How should you build the method? (To answer, drag the appropriate code segments to the correct location or locations in the answer area. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.)
Select and Place:

Suggested Answer:
Query interceptor methods, which are called when processing an HTTP GET request, must return a lambda expression that determines whether an instance of the interceptor's entity set should be returned by the query results. This expression is used by the data service to further refine the requested operation. The following is an example definition of a query interceptor.
// Define a query interceptor for the Orders entity set.
[QueryInterceptor("Orders")]
public Expression<Func<Order, bool>> OnQueryOrders()
References:
https://docs.microsoft.com/en-us/dotnet/framework/data/wcf/interceptors-wcf-data-services