Class: Ruote::Exp::UnregisterpExpression

Inherits:
RegisterpExpression show all
Defined in:
lib/ruote/exp/fe_unregisterp.rb

Overview

Unregisters a participant.

Ruote.process_definition do
  unregisterp 'alfred'
  unregisterp :name => 'bob'
end

Shows the same behaviour as

engine.unregister_participant 'alfred'
engine.unregister_participant 'bob'

The expression ‘registerp’ can be used to register participants from a process definition.

Constant Summary

Constants inherited from FlowExpression

FlowExpression::COMMON_ATT_KEYS

Instance Attribute Summary

Attributes inherited from FlowExpression

#context, #error, #h

Instance Method Summary collapse

Methods inherited from RegisterpExpression

#reply

Methods inherited from FlowExpression

#ancestor?, #att, #attribute, #attribute_text, #attributes, #cancel, #compile_atts, #compile_variables, do_action, #do_apply, #do_cancel, #do_fail, #do_pause, #do_persist, #do_reply, #do_resume, #do_unpersist, #expand_atts, #fei, fetch, from_h, #handle_on_error, #has_attribute, #initial_persist, #initialize, #iterative_var_lookup, #launch_sub, #lookup_on_error, #lookup_val, #lookup_val_prefix, #lookup_variable, #name, names, #parent, #parent_id, #persist_or_raise, #reply, #reply_to_parent, #set_variable, #to_h, #tree, #tree_children, #try_persist, #try_unpersist, #unpersist_or_raise, #unset_variable, #update_tree, #variables

Methods included from WithMeta

#class_def, included

Methods included from WithH

included

Constructor Details

This class inherits a constructor from Ruote::Exp::FlowExpression

Instance Method Details

#apply ⇒ Object 



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# File 'lib/ruote/exp/fe_unregisterp.rb', line 50

def apply

  registerp_allowed?

  name = attribute(:name) || attribute_text

  result = begin
    context.engine.unregister_participant(name)
    true
  rescue
    false
  end

  h.applied_workitem['fields']['__result__'] = result

  reply_to_parent(h.applied_workitem)
end