Class: Flor::Pro::Iterator

Inherits:
Flor::Procedure show all
Defined in:
lib/flor/pcore/iterator.rb

Direct Known Subclasses

All, Filter, Find, ForEach, Map, Reduce, SortBy

Constant Summary

Constants inherited from Flor::Procedure

Flor::Procedure::RVARS, Flor::Procedure::TRUE_ATTS

Instance Attribute Summary

Attributes inherited from Node

#message

Instance Method Summary collapse

Methods inherited from Flor::Procedure

[], core?, #debug_msg, #debug_tree, #end, #flank, #heap, inherited, make, names, #prepare_on_receive_last, #trigger_on_error

Methods inherited from Node

#child_id, #cnodes, #cnodes_any?, #cnodes_empty?, #deref, #descendant_of?, #domain, #exid, #fei, #from, #h, #initialize, #lookup_tree, #lookup_value, #message_or_node_payload, #nid, #node_closed?, #node_ended?, #node_open?, #node_payload, #node_payload_ret, #node_status, #node_status_flavour, #on_error_parent, #parent, #payload, #payload_ret, #point, #reheap, #to_procedure_node, #tree

Constructor Details

This class inherits a constructor from Flor::Node

Instance Method Details

#add ⇒ Object 



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# File 'lib/flor/pcore/iterator.rb', line 30

def add

  elts = message['elements']

  elts = elts.inject([]) { |a, e| a.concat(e.to_a) } \
    if @node['ocol'].is_a?(Hash)

  @node['col'].concat(elts)

  [] # no new messages to queue
end

#pre_execute ⇒ Object 



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# File 'lib/flor/pcore/iterator.rb', line 5

def pre_execute

  @node['vars'] ||= {}

  @node['args'] = [] # before iterating, arguments are collected

  @node['ocol'] = nil # original collection
  @node['fun'] = nil # function

  @node['col'] = nil # collection
  @node['idx'] = -1

  unatt_unkeyed_children
end

#receive_non_att ⇒ Object 



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# File 'lib/flor/pcore/iterator.rb', line 20

def receive_non_att

  if @node['args']
    receive_argument
  else
    receive_iteration
    iterate
  end
end