Class: Ruote::Exp::CommandedExpression

Inherits:
FlowExpression show all
Includes:
CommandMixin
Defined in:
lib/ruote/exp/commanded.rb

Overview

A parent class for CursorExpression and IteratorExpression

Direct Known Subclasses

CursorExpression, IteratorExpression

Constant Summary

Constants included from CommandMixin

Ruote::Exp::CommandMixin::ATT_COMMANDS, Ruote::Exp::CommandMixin::F_COMMAND

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 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_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

#reply(workitem) ⇒ Object 



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# File 'lib/ruote/exp/commanded.rb', line 39

def reply(workitem)

  workitem = h.command_workitem || workitem
  h.command_workitem = nil

  # command/answer may come from
  #
  # a) a child, regular case, easy
  # b) somewhere else, which means we have to cancel the current child
  #    and then make sure the comand is interpreted

  # a)

  if Ruote::FlowExpressionId.direct_child?(h.fei, workitem['fei'])
    return move_on(workitem)
  end

  # b)

  h.command_workitem = workitem
  h.command_workitem['fei'] = h.children.first

  do_persist || return

  @context.storage.put_msg('cancel', 'fei' => h.children.first)

  # iteration will be done at when cancelled child replies
end