lib/arel/algebra/relations/operations/having.rb


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module Arel
  class Having < Compound
    attr_reader :predicates

    def initialize(relation, *predicates)
      super(relation)
      predicates = [yield(relation)] + predicates if block_given?
      @predicates = predicates.map { |p| p.bind(relation) }
    end

    def havings
      @havings ||= relation.havings + predicates
    end

    def == other
      super || Having === other &&
               relation == other.relation &&
               predicates == other.predicates
    end
  end
end