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Size: 1.17 KB
Versions: 51
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Contents
# This file will generate a hash of LC more specific terms from the to-level term defined below (currently "Automobiles").
# It then dumps this hash to a file, so it can be loaded with each pre-assembly run and used when generating Revs Descriptive Metadata
# This method can be run periodically to refresh the list of terms. It will generate a new file in the "lib/pre_assembly/project" folder
# which can be updated in git.
# Peter Mangiafico
# May 16, 2013
require File.expand_path(File.dirname(__FILE__) + '/../config/boot')
require 'rdf'
require 'rdf/ntriples'
automobile_term='http://id.loc.gov/authorities/subjects/sh85010201' # the top-level LC term to get RDF for, "Automobiles"
term_predicate='http://www.w3.org/2004/02/skos/core#prefLabel' # the predicate which tells us when we have a term defined
results={} # the hash we will write with the terms and their LC URLs
RDF::Reader.open("#{automobile_term}.nt") do |reader|
reader.each_statement do |statement|
if statement.predicate.to_s.strip == term_predicate
results.merge!({statement.object.to_s=>statement.subject.to_s})
end
end
end
File.open(REVS_LC_TERMS_FILENAME, "wb") {|f| Marshal.dump(results, f)}
Version data entries
51 entries across 51 versions & 1 rubygems