gistfile1.rb

require 'dm-migrations'
require 'dm-types'

DataMapper::Logger.new($stdout, :debug)
DataMapper.setup(:default, "mysql://root@localhost/test")

class A
  include DataMapper::Resource
  storage_names[:default] = 'A'
  property :id, Serial
  property :e, Enum[:a, :b, :c]
end

DataMapper.finalize
DataMapper.auto_migrate!

A.create(:e => :a)
p A.find.first
p A.properties

gistfile2.txt

 ~ (0.000101) SET sql_auto_is_null = 0
 ~ (0.000085) SET SESSION sql_mode = 'ANSI,NO_BACKSLASH_ESCAPES,NO_DIR_IN_CREATE,NO_ENGINE_SUBSTITUTION,NO_UNSIGNED_SUBTRACTION,TRADITIONAL'
 ~ (0.596332) DROP TABLE IF EXISTS `A`
 ~ (0.130307) SHOW TABLES LIKE 'A'
 ~ (0.000103) SET sql_auto_is_null = 0
 ~ (0.000110) SET SESSION sql_mode = 'ANSI,NO_BACKSLASH_ESCAPES,NO_DIR_IN_CREATE,NO_ENGINE_SUBSTITUTION,NO_UNSIGNED_SUBTRACTION,TRADITIONAL'
 ~ (0.000626) SHOW VARIABLES LIKE 'character_set_connection'
 ~ (0.000609) SHOW VARIABLES LIKE 'collation_connection'
 ~ (1.055730) CREATE TABLE `A` (`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT, `e` INTEGER, PRIMARY KEY(`id`)) ENGINE = InnoDB CHARACTER SET utf8 COLLATE utf8_general_ci
 ~ (0.090454) INSERT INTO `A` (`e`) VALUES (1)
 ~ (0.000329) SELECT `id`, `e` FROM `A` ORDER BY `id`
#<A @id=1 @e=:a>
[#<DataMapper::Property::Serial @model=A @name=:id>, #< @model=A @name=:e>]