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# frozen_string_literal: true
# This class models a vertex in a directed graph.
class Vertex < ActiveRecord::Base
has_many :sink_edges, class_name: "Edge", foreign_key: "source_id"
has_many :sinks, through: :sink_edges
has_and_belongs_to_many :sources,
class_name: "Vertex", join_table: "edges",
foreign_key: "sink_id", association_foreign_key: "source_id"
end
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