Class: Swarm::ConditionalExpression

Inherits:
BranchExpression show all
Defined in:
lib/swarm/expressions/conditional_expression.rb

Instance Attribute Summary

Attributes inherited from HiveDweller

#hive, #id

Instance Method Summary collapse

Methods inherited from BranchExpression

#add_and_apply_child, #add_child, #create_child_expression, #kick_off_children

Methods inherited from Expression

#_apply, #_reply, #apply, #arguments, #branch_position, #command, #evaluator, inherited, #meets_conditions?, #node, #node_at_position, #parent, #replied?, #replied_at, #reply, #reply_to_parent, #root?, storage_type

Methods inherited from HiveDweller

#==, all, #attributes, #change_attribute, #changed?, create, define_getter, define_setter, #delete, each, fetch, ids, inherited, #initialize, many_to_one, #new?, new_from_storage, one_to_many, reify_from_hash, #reload!, #save, #set_attributes, set_columns, #storage, #storage_id, storage_id_for_key, storage_type, #to_hash

Constructor Details

This class inherits a constructor from Swarm::HiveDweller

Instance Method Details

#branch_condition_met? ⇒ Boolean 



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# File 'lib/swarm/expressions/conditional_expression.rb', line 34

def branch_condition_met?
  evaluator.check_condition(command, arguments["condition"])
end

#move_on_from(child) ⇒ Object 



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# File 'lib/swarm/expressions/conditional_expression.rb', line 17

def move_on_from(child)
  self.workitem = child.workitem
  reply
end

#original_tree ⇒ Object 



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# File 'lib/swarm/expressions/conditional_expression.rb', line 7

alias original_tree tree

#select_branch ⇒ Object 



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# File 'lib/swarm/expressions/conditional_expression.rb', line 26

def select_branch
  if branch_condition_met?
    original_tree["true"]
  else
    original_tree["false"]
  end
end

#tree ⇒ Object 



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# File 'lib/swarm/expressions/conditional_expression.rb', line 22

def tree
  @tree ||= select_branch || []
end

#work ⇒ Object 



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# File 'lib/swarm/expressions/conditional_expression.rb', line 9

def work
  if tree.empty?
    reply
  else
    kick_off_children([0])
  end
end