# File lib/innodb/data_dictionary.rb, line 232
  def data_dictionary_index_ids
    if @data_dictionary_index_ids
      return @data_dictionary_index_ids
    end

    @data_dictionary_index_ids = {}
    data_dictionary_indexes.each do |table, indexes|
      indexes.each do |index, root_page_number|
        if root_page = system_space.page(root_page_number)
          @data_dictionary_index_ids[root_page.index_id] = {
            :table => table,
            :index => index
          }
        end
      end
    end

    @data_dictionary_index_ids
  end