require 'mongo'

module PrototypeR4
  module GridIO

    def self.included(base)
      base.class_eval do

        def size
          (file_length / chunk_size) + (file_length % chunk_size > 0 ? 1 : 0)
        end

        def each(&block)
          size.times { block.call(read(chunk_size)) }
        end

      end
    end
  
  end
end