One of the simplest participants. Simply passes a workitem to a block of ruby code.

  engine.register_participant :alpha do |workitem|
    workitem.fields['time'] = Time.now
  end

This participant implicitely replies to the engine when the block execution is over.

You can pass the flow_expression (participant expression) as well.

  engine.register_participant :alpha do |workitem, flow_exp|
    workitem.fields['amount'] = flow_exp.lookup_variable('amount')
  end

do_not_thread

By default, this participant (like most other participants) is executed in its own thread.

context

As it includes Ruote::LocalParticipant, the block partitcipant has access to:

• context: the ruote context
• workitem: the current workitem (usually passed as arg to the block)
• fei: the current flow expression id
• fexp: the current flow expression
• flavour: only used in on_cancel (nil or ‘kill’)
• lookup_variable(key): looks up a variable…