banker

# Dynamically create a subclass in rails. 
def create_subclass(class_name, subclass=nil)
  name = class_name.to_s.camelize
  Object.const_set(name, Class.new(CryptedAttribute))
end

create_subclass(:username, CryptedAttribute)
=> Username

Username.superclass

banker

class Test::Unit::TestCase
  private

  def reload_activerecord_instances
    self.instance_variables.each do |ivar|
      if ivar.is_a?(ActiveRecord::Base) && ivar.respond_to?(:reload)
        ivar.reload
      end
    end
  end

banker

context "A new group" do 
  setup do
    @group = Factory(:group)
  end

  context "with an added entry" do
    setup do 
      @entry = Factory(:entry, :title => "WEB", :group => @group)
      @group.reload
    end

banker

module SelectiveAttributeValidatable

  def self.included(base)
    base.send(:include, InstanceMethods)

    base.class_eval do
      alias_method_chain :update_attributes, :check
    end
  end

banker

validates_presence_if     :description, :if => :should_validate_description?
validates_numericality_of :age,         :if => :should_validate_age?

banker

System: Macbook Pro, 2.4 GHz Intel Core 2 Duo, 3GB, OSX 10.6

MongoDB 1.1.1
Using mongo 0.15.1
                user     system      total        real
init        0.000000   0.000000   0.000000 (  0.001954)
create     28.930000   0.790000  29.720000 ( 32.836103)
query       0.130000   0.010000   0.140000 (  0.182142)
delete      0.000000   0.000000   0.000000 (  2.282025)

banker

Using MongoMapper 0.5.4 with mongo-0.15.1 and mongo_ext-0.15.1

require 'rubygems'
require 'mongo_mapper'

MongoMapper.connection = Mongo::Connection.new('localhost', 27017)
MongoMapper.database = 'dupes'

class Doc
  include MongoMapper::Document

banker

Using mongo-0.15.1 with mongo_ext-0.15.1

require 'rubygems' 
require 'mongo' 
 
db = Mongo::Connection.new('localhost', 27017).db('stuff') 
 
coll = db['stuff'] 
 
coll.remove 

banker

equire 'benchmark'

class String
  def ending
    length = self.length
    self[length-2].chr + self[length-1].chr
  end

  def base
    self[0..(self.length-3)]

banker

Reducing batch size to 500 and using Benchmark with rehearsal (bmbm):
see http://github.com/mperham/docdb_shootout

MongoDB 1.1.1
Using latest mongo 0.16
              user     system      total        real
init        0.000000   0.000000   0.000000 (  0.002115)
create     16.470000   0.760000  17.230000 ( 21.946121)
query       0.060000   0.000000   0.060000 (  0.093965)
delete      0.000000   0.000000   0.000000 (  2.927984)