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Contents
module Qa::Authorities
class Getty::AAT < Base
include WebServiceBase
def search(q)
parse_authority_response(json(build_query_url(q)))
end
def build_query_url(q)
"http://vocab.getty.edu/sparql.json?query=#{ERB::Util.url_encode(sparql(q))}&_implicit=false&implicit=true&_equivalent=false&_form=%2Fsparql"
end
def sparql(q) # rubocop:disable Metrics/MethodLength
search = untaint(q)
if search.include?(' ')
clauses = search.split(' ').collect do |i|
%((regex(?name, "#{i}", "i")))
end
ex = "(#{clauses.join(' && ')})"
else
ex = %(regex(?name, "#{search}", "i"))
end
# The full text index matches on fields besides the term, so we filter to ensure the match is in the term.
%(SELECT ?s ?name {
?s a skos:Concept; luc:term "#{search}";
skos:inScheme <http://vocab.getty.edu/aat/> ;
gvp:prefLabelGVP [skosxl:literalForm ?name].
FILTER #{ex} .
} ORDER BY ?name).gsub(/[\s\n]+/, " ")
end
def untaint(q)
q.gsub(/[^\w\s-]/, '')
end
def find(id)
json(find_url(id))
end
def find_url(id)
"http://vocab.getty.edu/download/json?uri=http://vocab.getty.edu/aat/#{id}.json"
end
def request_options
{ accept: 'application/sparql-results+json' }
end
private
# Reformats the data received from the Getty service
def parse_authority_response(response)
response['results']['bindings'].map do |result|
{ 'id' => result['s']['value'], 'label' => result['name']['value'] }
end
rescue StandardError => e
cause = response.fetch('error', {}).fetch('cause', 'UNKNOWN')
cause = cause.present? ? cause : 'UNKNOWN'
Rails.logger.warn " ERROR fetching Getty response: #{e.message}; cause: #{cause}"
{}
end
end
end
Version data entries
28 entries across 28 versions & 1 rubygems