I have many complex queries that I sometimes wish to check directly against Mongo for debugging \ explaining() purposes.
With the newer 2.0+ c# driver, i'm not sure how to do this. With the previous version there was a thing called IMongoQuery
and This worked.
A simple example:
FilterDefinition<LalalaEvent> filter = Builders<LalalaEvent>.Filter
.Where(e => ids.Contains(e.Id) && e.Deleted != true );
I was trying to solve the same problem today. Here is what I found.
public static class MongoExtensions
{
public static BsonDocument RenderToBsonDocument<T>(this FilterDefinition<T> filter)
{
var serializerRegistry = BsonSerializer.SerializerRegistry;
var documentSerializer = serializerRegistry.GetSerializer<T>();
return filter.Render(documentSerializer, serializerRegistry);
}
}
I didn't have access to a collection when I was calling it, so I couldn't use the above solutions.
This allows you to do
var json = filter.RenderToBsonDocument().ToJson();