File: edge.rb

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ruby-activerecord-2.3 2.3.14-6
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# This class models an edge in a directed graph.
class Edge < ActiveRecord::Base
  belongs_to :source, :class_name => 'Vertex', :foreign_key => 'source_id'
  belongs_to :sink,   :class_name => 'Vertex', :foreign_key => 'sink_id'
end