public ImdbRoot(SessionBase session)
{
actorSet = new BTreeSet<Actor>(null, session);
actressSet = new BTreeSet<Actress>(null, session);
actingByNameSet = new BTreeSet<ActingPerson>(actingByNameComparer, session);
movieSet = new BTreeSet<Movie>(movieNameHashComparer, session, 10000, sizeof(Int32));
}