Class: RDFObject::Collection

Inherits:
Object
  • Object
show all
Defined in:
lib/rdf_objects/pho/rdf_resource.rb

Instance Method Summary collapse

Instance Method Details

#to_rss ⇒ Object 



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# File 'lib/rdf_objects/pho/rdf_resource.rb', line 71

def to_rss
  uuid = ::UUID.generate
  uri = "info:uuid/#{uuid}"
  namespaces = {}
  rdf_data = ""    
  self.values.each do |item|
    ns, rss_data = item.rss_item_block
    namespaces.merge!(ns)
    rdf_data << rss_data      
  end

  unless namespaces["xmlns:rdf"]
    if  x = namespaces.index("http://www.w3.org/1999/02/22-rdf-syntax-ns#")
      namespaces.delete(x)
    end
    namespaces["xmlns:rdf"] = "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
  end
  namespaces["xmlns"] = "http://purl.org/rss/1.0/"
  rdf = "<rdf:RDF"
  namespaces.each_pair {|key, value| rdf << " #{key}=\"#{value}\""}
  rdf <<">"
  rdf << "<channel rdf:about=\"#{uri}\"><title>RDFObject Collection</title><link>#{uri}</link>"
  rdf << "<description>RDFOject Collection</description><items><rdf:Seq>"
  self.keys.each do |uri|
    rdf << "<rdf:li resource=\"#{uri}\" />"
  end
  rdf << "</rdf:Seq></items>"
  rdf << "</channel>"
  
    
  rdf << rdf_data
  rdf << "</rdf:RDF>"
  rdf      
end