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require 'rom'
require 'anima'

class User
  include Anima.new(:id, :name, :tasks)
end

class Task
  include Anima.new(:title)
end

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$LOAD_PATH.unshift './lib'

require 'axiom-sql-generator'

users = Axiom::Relation::Base.new(:users, [[:id, Integer], [:name, String]])

def compile_sql(relation)
  sql_ast = Axiom::SQL::Processor.call(relation)
  sql_str = SQL::Generator.generate(sql_ast)

solnic

Bundler could not find compatible versions for gem "rspec-core":
  In Gemfile:
    mutant-rspec (>= 0) ruby depends on
      rspec-core (~> 2.14.1) ruby

    rspec-rails (~> 3.0) ruby depends on
      rspec-core (3.0.2)

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# https://github.com/rom-rb/rom/blob/reboot/benchmarks/basic.rb

Calculating -------------------------------------
   schema.users.to_a        20 i/100ms
  mappers.users.to_a        17 i/100ms
     ARUser.all.to_a        10 i/100ms
-------------------------------------------------
   schema.users.to_a      210.7 (±9.5%) i/s -       1060 in   5.074291s
  mappers.users.to_a      173.8 (±9.2%) i/s -        867 in   5.026702s
     ARUser.all.to_a      102.3 (±5.9%) i/s -        510 in   5.004413s

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# without unique column names this is what you need to do to make sure the result set has correct values and there
# are no name clashes
DB[:users].
  join_table(:inner, :tasks, user_id: :users__id).
  select(:tasks__id___task_id, :users__id___users_id)

# versus this, if we had unique column names by default
DB[:users].natural_join(:tasks).select(:task_id, :user_id)

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class Result
  attr_reader :value, :error

  class Success < Result
    def initialize(value)
      @value = value
    end

    def >(f)
      f.call(value)

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require 'virtus'

class Money
  include Virtus.value_object

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

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

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

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-- 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

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