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require 'rss/taxonomy'
require 'rss/maker/1.0'
require 'rss/maker/dublincore'
module RSS
module Maker
module TaxonomyTopicsModel
def self.append_features(klass)
super
klass.def_classed_element("#{RSS::TAXO_PREFIX}_topics",
"TaxonomyTopics")
end
def self.install_taxo_topics(klass)
klass.module_eval(<<-EOC, __FILE__, __LINE__ + 1)
class TaxonomyTopics < TaxonomyTopicsBase
def to_feed(feed, current)
if current.respond_to?(:taxo_topics)
topics = current.class::TaxonomyTopics.new
bag = topics.Bag
@resources.each do |resource|
bag.lis << RDF::Bag::Li.new(resource)
end
current.taxo_topics = topics
end
end
end
EOC
end
class TaxonomyTopicsBase < Base
attr_reader :resources
def_array_element("resource")
remove_method :new_resource
end
end
module TaxonomyTopicModel
def self.append_features(klass)
super
class_name = "TaxonomyTopics"
klass.def_classed_elements("#{TAXO_PREFIX}_topic", "value", class_name)
end
def self.install_taxo_topic(klass)
klass.module_eval(<<-EOC, __FILE__, __LINE__ + 1)
class TaxonomyTopics < TaxonomyTopicsBase
class TaxonomyTopic < TaxonomyTopicBase
DublinCoreModel.install_dublin_core(self)
TaxonomyTopicsModel.install_taxo_topics(self)
def to_feed(feed, current)
if current.respond_to?(:taxo_topics)
topic = current.class::TaxonomyTopic.new(value)
topic.taxo_link = value
taxo_topics.to_feed(feed, topic) if taxo_topics
current.taxo_topics << topic
setup_other_elements(feed, topic)
end
end
end
end
EOC
end
class TaxonomyTopicsBase < Base
def_array_element("topic", nil, "TaxonomyTopic")
alias_method(:new_taxo_topic, :new_topic) # For backward compatibility
class TaxonomyTopicBase < Base
include DublinCoreModel
include TaxonomyTopicsModel
attr_accessor :value
add_need_initialize_variable("value")
alias_method(:taxo_link, :value)
alias_method(:taxo_link=, :value=)
def have_required_values?
@value
end
end
end
end
class RSSBase
include TaxonomyTopicModel
end
class ChannelBase
include TaxonomyTopicsModel
end
class ItemsBase
class ItemBase
include TaxonomyTopicsModel
end
end
makers.each do |maker|
maker.module_eval(<<-EOC, __FILE__, __LINE__ + 1)
TaxonomyTopicModel.install_taxo_topic(self)
class Channel
TaxonomyTopicsModel.install_taxo_topics(self)
end
class Items
class Item
TaxonomyTopicsModel.install_taxo_topics(self)
end
end
EOC
end
end
end
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