# File lib/thinking_sphinx/active_record/sql_source.rb, line 88
      def type
        @type ||= case adapter
        when DatabaseAdapters::MySQLAdapter
          'mysql'
        when DatabaseAdapters::PostgreSQLAdapter
          'pgsql'
        else
          raise UnknownDatabaseAdapter, "Provided type: #{adapter.class.name}"
        end
      end