module Mongo
  class DB
    def nolock_eval(code, *args)
      if not code.is_a? BSON::Code
        code = BSON::Code.new(code)
      end

      oh = BSON::OrderedHash.new
      oh[:$eval] = code
      oh[:args]  = args
      oh[:nolock] = true

      doc = command(oh)
      doc['retval']
    end
  end
end

module Mongoid
  module Document
    def self.included(base)
      models << base.to_s
      super
    end

    def self.models
      @models ||= []
    end
  end
end