Class: LD4L::WorksRDF::GetRdfxmlFromURI

Inherits:
Object
  • Object
show all
Defined in:
lib/ld4l/works_rdf/services/negotiation_services/get_rdfxml_from_uri.rb

Class Method Summary collapse

Class Method Details

.call(uri) ⇒ Object

Get triples as rdfxml populated from the URI via content negotiation.

Parameters:

  • uri (String, RDF::URI) —

    for the work

Raises:

  • (ArgumentError) 


11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
 
# File 'lib/ld4l/works_rdf/services/negotiation_services/get_rdfxml_from_uri.rb', line 11

def self.call( uri )
  raise ArgumentError, 'uri argument must be a uri string or an instance of RDF::URI'  unless
      uri.kind_of?(String) && uri.size > 0 || uri.kind_of?(RDF::URI)

  uri = uri.to_s if uri.kind_of?(RDF::URI)

  http = Curl.get(uri) do |curl|
    curl.headers['Accept'] = 'application/rdf+xml'
    curl.headers['Content-Type'] = 'application/rdf+xml'
    curl.headers['Api-Version'] = '2.2'
    curl.follow_location = true
    curl.max_redirects = 3
    curl.connect_timeout = 30
    curl.useragent = "curb"
  end
  header = http.header_str
  response_content_type = LD4L::WorksRDF::ResponseHeader.get_content_type(header)
  raise EncodingError, "uri returned results of type '#{response_content_type}' instead of expected 'application/rdf+xml'" unless response_content_type == 'application/rdf+xml'

  result = http.body_str
  result
end