module ActiveRecord
  module Associations
    class Preloader
      class SingularAssociation < Association #:nodoc:
        private

          def preload(preloader)
            associated_records_by_owner(preloader).each do |owner, associated_records|
              record = associated_records.first

              association = owner.association(reflection.name)
              association.target = record
              association.set_inverse_instance(record) if record
            end
          end
      end
    end
  end
end