An experimental meta-mixin that adds the ability to describe a class’s structure in terms of RDF classes.

For more on how this is intended to work, see: deveiate.org/projects/Redleaf/wiki/Archetypes

*This module is not yet functional, and should not be distributed with releases, or counted on for its interface.*

Example

   require 'redleaf/archetypes'
   require 'redleaf/constants'

   class Project
       include Redleaf::Archetypes,
               Redleaf::Constants::CommonNamespaces
       include_archetype DOAP[:Project]
   end

   class Version
       include Redleaf::Archetypes,
               Redleaf::Constants::CommonNamespaces
       include_archetype DOAP[:Version]
   end

   class SVNRepository
       include Redleaf::Archetypes,
               Redleaf::Constants::CommonNamespaces
       include_archetype DOAP[:SVNRepository]
   end

   redleaf = Project.new( 'http://deveiate.org/projects/Redleaf' )
   redleaf.created = Date.new( "2008-11-21" )
   redleaf.license = URI( 'http://usefulinc.com/doap/licenses/asl20' )
   redleaf.name = 'Redleaf'
   redleaf.homepage = URI( 'http://deveiate.org/projects/Redleaf' )
   redleaf.shortdesc = 'An RDF library for Ruby'
   redleaf.description = <<-EOF
       Redleaf is an RDF library for Ruby. It's composed of a hand-written
       binding for the Redland RDF Library, and a high-level layer that
       adds some idioms that Rubyists might find familiar.
   EOF
   redleaf.bug_database = URI( "http://deveiate.org/projects/Redleaf/report" )
   redleaf.download_page = URI( "http://deveiate.org/projects/Redleaf/wiki" )
   redleaf.programming_language = [ 'Ruby', 'C' ]
   redleaf.category = 'library'

   version_0_0_1 = Version.new(
      :name => 'Maple',
      :created => Date.new('2008-12-01'),
      :revision => '0.0.1'
     )
   redleaf.release = [ version_0_0_1 ]

   repo = SVNRepository.new(
      :location => URI('http://repo.deveiate.org/Redleaf'),
      :browse => URI('http://deveiate.org/projects/Redleaf/browser')
     )
   redleaf.repository = [ repo ]

   redleaf.to_rdfxml

     # File lib/redleaf/archetypes.rb, line 101
101:     def self::included( mod )
102:         mod.extend( ClassMethods )
103:     end