# File lib/tapkit/access/entity.rb, line 195
                def qualifier_for_primary_key( row )
                        values = {}
                        @primary_key_attribute_names.each do |name|
                                if row[name] then
                                        values[name] = row[name]
                                end
                        end

                        # new_to_match_all_values
                        if values then
                                Qualifier.new_to_match_all_values values
                        else
                                nil
                        end
                end