Make enum-column plugin for Rails work with JDBC MySQL adapter as well

jdbcmysql_adapter.rb

module ActiveRecord
  module ConnectionAdapters
    class MysqlAdapter
      alias __native_database_types_enum native_database_types
      
      def native_database_types #:nodoc
        types = __native_database_types_enum
        types[:enum] = { :name => "enum" }
        types
      end

      def columns(table_name, name = nil)#:nodoc:
        sql = "SHOW FIELDS FROM #{quote_table_name(table_name)}"
        execute(sql, name).map do |field|
          MysqlColumnWithEnum.new(field["Field"], field["Default"], field["Type"], field["Null"] == "YES")
        end
      end
    end
    
    class MysqlColumnWithEnum < MysqlColumn
      include ActiveRecordEnumerations::Column
      
      def initialize(name, default, sql_type = nil, null = true)
        if sql_type =~ /^enum/i
          values = sql_type.sub(/^enum\('([^)]+)'\)/i, '\1').split("','").map { |v| v.intern }
          default = default.intern if default and !default.empty?
        end
        super(name, default, sql_type, null, values)
      end
    end
  end
end

The plug-in provides support for MySQL ENUM columns in ActiveRecord. More details are available here: http://enum-column.rubyforge.org/