klass (ActiveRecord::ConnectionAdapters::Column)

    # File lib/active_record/connection_adapters/abstract/schema_definitions.rb, line 41
          def klass
            case type
              when :integer       then Fixnum
              when :float         then Float
              when :decimal       then BigDecimal
              when :datetime      then Time
              when :date          then Date
              when :timestamp     then Time
              when :time          then Time
              when :text, :string then String
              when :binary        then String
              when :boolean       then Object
            end
          end