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Versions: 8
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Contents
# frozen_string_literal: true
module Hyrax
module ControlledVocabularies
##
# adds caching to the {#rdf_label} method.
#
# for systems that check the {#rdf_label}and use {#fetch} to get upstream
# data if it is not present, this can be used to avoid making round trips
# to an authoritative web source.
#
# @see Hyrax::DeepIndexingService
module ResourceLabelCaching
CACHE_KEY_PREFIX = "hy_label-v1-"
##
# @note uses the Rails cache to avoid repeated lookups.
# @see ActiveTriples::Resource#rdf_label
def rdf_label
# only cache if this rdf source is represented by a URI;
# i.e. don't cache for blank nodes
return super unless uri?
Rails.cache.fetch(cache_key) { super }
end
##
# @note adds behavior to clear the cache whenever a manual fetch of data
# is performed.
# @see ActiveTriples::Resource#fetch
def fetch(*)
Rails.cache.delete(cache_key)
super
end
private
def cache_key
"#{CACHE_KEY_PREFIX}#{to_uri.canonicalize.pname}"
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems