Ruote::Exp::CancelProcessExpression

Cancels a whole process instance.

pdef = Ruote.process_definition :name => 'test' do
  sequence do
    participant :ref => 'editor'
    concurrence do
      participant :ref => 'reviewer1'
      participant :ref => 'reviewer2'
      sequence do
        participant :ref => 'main_reviewer'
        cancel_process :if => '${f:over} == true'
      end
    end
    participant :ref => 'editor'
  end
end

This example has a 'main_reviewer' with the ability to cancel the whole process, if he sets the workitem field 'over' to 'true'.

If the goal is to cancel only a segment of a process instance, the expression 'undo' (Ruote::Exp::UndoExpression) is better suited.