datamapper_query_counter.rb

require 'data_objects'
require 'data_mapper'
require 'dm-core'
require 'dm-do-adapter'
require 'do_postgres'

module DataMapper
  class << self
    attr_accessor :query_count
  end

  class Repository
    alias_method :original_new_query, :new_query

    def new_query(model, options = {})
      DataMapper.query_count ||= 0
      DataMapper.query_count += 1
      original_new_query(model, options)
    end
  end
end