t4.rb

Ruote.define do

  set 'f:participants' => [ "a", "b", "c" ]

  citerator :on => "$f:participants", :to_var => 'v', :merge_type => 'concat' do
    #
    # first pass, each participant registers its slot
    #
    participant '$v:v', :task => 'register_slot'
  end

  # at this point, thanks to merge_type "concat" the single workitem
  # holds all the registered slot information

  citerator :on => "$f:participants", :to_var => 'v' do
    #
    # second pass, each participant sees its slot and all the other
    # attributed slots
    #
    participant '$v:v', :task => 'do_the_job'
  end
end