gooddata/gooddata-ruby

GoodData::Model::ProjectBuilder.create("Test project") do |p|
  p.add_date_dimension("committed_on")

  p.add_dataset("repos") do |d|
      d.add_anchor("repo_id")
      d.add_label("name", :reference => "repo_id")
  end

  p.add_dataset("devs") do |d|
      d.add_anchor("dev_id")
      d.add_label("email", :reference => "dev_id")
  end

  p.add_dataset("commits") do |d|
      d.add_fact("lines_changed")
      d.add_date("committed_on", :dataset => "committed_on")
      d.add_reference('devs')
      d.add_reference('repos')
  end
end