Inheritance in MongoDb: how to request instances of defined type

Question

This is how I used to utilize inheritance in Entity Framework (POCO):

ctx.Animals // base class instances (all instances)
ctx.Animals.OfType  // inher         


        

Answer 1

Assuming your discriminators are functioning (_t is stored correctly for each document) then I think this is what you are looking for.

var results = collection.AsQueryable().OfType

Returns only those documents that are of type 'Cat'.