Method: Puppet::Graph::SimpleGraph#add_edge

Defined in:
lib/puppet/graph/simple_graph.rb

#add_edge(e, *a) ⇒ Object

Add a new edge. The graph user has to create the edge instance, since they have to specify what kind of edge it is.



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# File 'lib/puppet/graph/simple_graph.rb', line 301

def add_edge(e, *a)
  return add_relationship(e, *a) unless a.empty?

  e = Puppet::Relationship.from_data_hash(e) if e.is_a?(Hash)
  @upstream_from.clear
  @downstream_from.clear
  add_vertex(e.source)
  add_vertex(e.target)
  # Avoid multiple lookups here. This code is performance critical
  arr = (@in_to[e.target][e.source] ||= [])
  arr << e unless arr.include?(e)
  arr = (@out_from[e.source][e.target] ||= [])
  arr << e unless arr.include?(e)
end