solnic

require 'rom'

ROM.setup(:memory)

class Users < ROM::Relation[:memory]
end

class Tasks < ROM::Relation[:memory]
end

solnic

REQUIRE_DATA = {}
BUNDLED_GEMS = `bundle show | grep "*" | awk '{print $2}'`.split("\n").sort
require 'bigdecimal'

def require(name)
  start = Time.now
  ret = super
  stop = Time.now
  total = BigDecimal(stop-start, 6)
  REQUIRE_DATA[name] = total if BUNDLED_GEMS.include?(name)

solnic

module Virtus
  class PGArray < Attribute
    primitive Sequel::Postgres::PGArray

    def primitive
      options[:primitive]
    end

    def coerce(value)
      Sequel.pg_array(value)

solnic

require 'rom-sql'
require 'virtus'

module ActiveRecord
  class Base
    def self.inherited(klass)
      rel_class = Class.new(ROM::Relation[:sql]) {
        base_name Inflecto.tableize(klass.name).to_sym
      }
      dataset = repository.dataset(rel_class.base_name)

solnic

require 'rom-sql'

setup = ROM.setup('postgres://localhost/rom')

setup.default.adapter.connection.drop_table?(:users)
setup.default.adapter.connection.drop_table?(:groups)

setup.default.adapter.connection.create_table :groups do
  Integer :id
  String :name, null: false

solnic

gem "rom", github: 'rom-rb/rom', branch: 'master'
gem "rom-sql", github: 'rom-rb/rom-sql', branch: 'master'
gem "rom-rails", github: 'rom-rb/rom-rails', branch: 'master'

gem_group(:test) do
  gem "rspec"
  gem "rspec-rails"
  gem "capybara"
  gem "spring-commands-rspec"
end

solnic

Calculating -------------------------------------
[ROM] Loading 1k user objects
                            29 i/100ms
[AR] Loading 1k user objects
                             9 i/100ms
-------------------------------------------------
[ROM] Loading 1k user objects
                          277.2 (±6.5%) i/s -       1392 in   5.040249s
[AR] Loading 1k user objects
                          111.0 (±9.0%) i/s -        558 in   5.071423s

solnic

-- create_table(:users)
   -> 0.0039s
LOADED 1000 users via ROM/Sequel
LOADED 1000 users via ActiveRecord
Calculating -------------------------------------
rom.read(:user_json).all.to_a
                            16 i/100ms
ARUser.all.map(&:as_json)
                             3 i/100ms
-------------------------------------------------

solnic

class ArrayAdapter < ROM::Adapter
  def self.schemes
    [:array]
  end

  def initialize(uri)
    super
    @connection = {}
  end

solnic

require 'virtus'

class Money
  include Virtus.value_object

  values do
    attribute :amount, Integer
    attribute :currency, String
  end
end