Class: Qa::Authorities::Getty::TGN

Inherits:
Base
  • Object
show all
Includes:
WebServiceBase
Defined in:
lib/qa/authorities/getty/tgn.rb

Instance Attribute Summary

Attributes included from WebServiceBase

#raw_response

Instance Method Summary collapse

Methods included from WebServiceBase

#json, #response

Methods inherited from Base

#all

Instance Method Details

#build_query_url(q) ⇒ Object 



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# File 'lib/qa/authorities/getty/tgn.rb', line 9

def build_query_url(q)
  query = ERB::Util.url_encode(sparql(untaint(q)))
  # Replace ampersands, otherwise the query will fail
  # Gsub hack to convert the encoded regex in the REPLACE into a form Getty understands
  "http://vocab.getty.edu/sparql.json?query=#{query.gsub('&', '%26').gsub(',[%5E,]+,[%5E,]+$', '%2C[^%2C]%2B%2C[^%2C]%2B%24')}&_implicit=false&implicit=true&_equivalent=false&_form=%2Fsparql"
end

#find(id) ⇒ Object 



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# File 'lib/qa/authorities/getty/tgn.rb', line 42

def find(id)
  json(find_url(id))
end

#find_url(id) ⇒ Object 



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# File 'lib/qa/authorities/getty/tgn.rb', line 46

def find_url(id)
  "http://vocab.getty.edu/download/json?uri=http://vocab.getty.edu/tgn/#{id}.json"
end

#request_options ⇒ Object 



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# File 'lib/qa/authorities/getty/tgn.rb', line 50

def request_options
  { accept: 'application/sparql-results+json' }
end

#search(q) ⇒ Object 



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# File 'lib/qa/authorities/getty/tgn.rb', line 5

def search(q)
  parse_authority_response(json(build_query_url(q)))
end

#sparql(q) ⇒ Object

Use a regex to exclude the continent and ‘world’ from the query If only one word is entered only search the name (not the parent string) If more than one word is entered, one word must appear in the name, and all words in either parent or name



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# File 'lib/qa/authorities/getty/tgn.rb', line 19

def sparql(q) # rubocop:disable Metrics/MethodLength
  search = untaint(q)
  if search.include?(' ')
    clauses = search.split(' ').collect do |i|
      %((regex(?name, "#{i}", "i") || regex(?alt, "#{i}", "i")))
    end
    ex = "(#{clauses.join(' && ')})"
  else
    ex = %(regex(?name, "#{search}", "i"))
  end
  %(SELECT DISTINCT ?s ?name ?par {
    ?s a skos:Concept; luc:term "#{search}";
        skos:inScheme <http://vocab.getty.edu/tgn/> ;
        gvp:prefLabelGVP [skosxl:literalForm ?name] ;
              gvp:parentString ?par .
    FILTER #{ex} .
  } ORDER BY ?name ASC(?par)).gsub(/[\s\n]+/, " ")
end

#untaint(q) ⇒ Object 



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# File 'lib/qa/authorities/getty/tgn.rb', line 38

def untaint(q)
  q.gsub(/[^\w\s-]/, '')
end