Class: Marc2LinkedData::OclcIdentity

Inherits:
Resource
  • Object
show all
Defined in:
lib/marc2linkeddata/oclc_identity.rb

Constant Summary collapse

PREFIX = 
'http://www.worldcat.org/identities/'

Instance Attribute Summary

Attributes inherited from Resource

#iri

Instance Method Summary collapse

Methods inherited from Resource

#get_rdf, #id, #initialize, #iri_types, #rdf_find_object, #rdf_find_subject, #rdf_uri, #rdf_valid?, #resolve_external_auth, #same_as, #same_as_array

Constructor Details

This class inherits a constructor from Marc2LinkedData::Resource

Instance Method Details

#creative_works ⇒ Object

def get_xml

begin
  return @xml unless @xml.nil?
  http = Net::HTTP.new @iri.host
  resp = http.get(@iri.path, {'Accept' => 'application/xml'})
  case resp.code
    when '301','302','303'
      #301 Moved Permanently; 302 Moved Temporarily; 303 See Other
      resp = http.get(resp['location'], {'Accept' => 'application/xml'})
  end
  if resp.code != '200'
    raise
  end
  @xml = resp.body
rescue
  puts 'ERROR: Failed to request OCLC identity xml.'
end

end



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# File 'lib/marc2linkeddata/oclc_identity.rb', line 38

def creative_works
  q = SPARQL.parse('SELECT * WHERE { ?oclcWork a <http://schema.org/CreativeWork> }')
  rdf.query(q).collect {|s| s[:oclcWork] }
end

#rdf ⇒ Object 



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# File 'lib/marc2linkeddata/oclc_identity.rb', line 9

def rdf
  # e.g. 'http://www.worldcat.org/identities/lccn-n79044803/'
  # the html returned contains RDFa data
  return nil if @iri.nil?
  return @rdf unless @rdf.nil?
  uri4rdf = @iri.to_s
  uri4rdf += '/' unless uri4rdf.end_with? '/'
  @rdf = get_rdf(uri4rdf)
end