# File lib/active_ldap/populate.rb, line 4
    def ensure_base(base_class=nil)
      base_class ||= Base
      return unless base_class.search(:scope => :base).empty?

      base_dn = DN.parse(base_class.base)
      suffixes = []

      base_dn.rdns.reverse_each do |rdn|
        name, value = rdn.to_a[0]
        prefix = suffixes.join(",")
        suffixes.unshift("#{name}=#{value}")
        next unless name == "dc"
        dc_class = Class.new(base_class)
        dc_class.ldap_mapping :dn_attribute => "dc",
                              :prefix => "",
                              :scope => :base,
                              :classes => ["top", "dcObject", "organization"]
        dc_class.base = prefix
        next if dc_class.exist?(value)
        dc = dc_class.new(value)
        dc.o = dc.dc
        begin
          dc.save
        rescue ActiveLdap::OperationNotPermitted
        end
      end
    end