Just from the performance perspective of keeping track of those filters on the collection... I am not a fan of this.

Sanne Grinovero I'd like to get your ideas on this. Basically this change makes it so that for each collection that is associated with a given Session we now collect and keep track of all the filters enabled at that time (its a Map of non-trivial data). For each Collection reference.

And as for "being correct" over being fast... I personally agree somewhat with Gail in regards to initializing this collection earlier. We have never guaranteed that this would work with any Session-based state.