Class: Krikri::Enrichments::CreatePrefLabelFromProvided

Inherits:
Object
  • Object
show all
Includes:
Audumbla::FieldEnrichment
Defined in:
lib/krikri/enrichments/create_pref_label_from_provided.rb

Overview

Given an field that accepts both ‘providedLabel` and `prefLabel`, copies the first `providedLabel` into `prefLabel` unless one is already present.

Only the first ‘providedLabel` is copied, avoiding conflicts with SKOS’s limit of one ‘skos:prefLabel` per language tag.

Fields are ignored and returned as-is if:

- they are not `ActiveTriples::Resource`
- they do not respond to `#providedLabel`
- they already have a `prefLabel`
- there are no `providedLabel`s present

Examples:

enriching a resource with a providedLabel

label_enricher = CreatePrefLabelFromProvided.new

resource.providedLabel = 'moomin'
label_enricher.enrich_value(resource)
resource.dump :ttl
# [
#   a <http://www.europeana.eu/schemas/edm/Agent>;
#   <http://dp.la/about/map/providedLabel> "moomin";
#   <http://www.w3.org/2004/02/skos/core#prefLabel> "moomin"
# ] .

See Also:

Instance Method Summary collapse

Instance Method Details

#enrich_value(value) ⇒ Object

Parameters:

  • value (Object) —

    the value to split

See Also:

  • Audumbla::FieldEnrichment#enrich_value


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# File 'lib/krikri/enrichments/create_pref_label_from_provided.rb', line 36

def enrich_value(value)
  return value unless value.is_a?(ActiveTriples::Resource) &&
                      value.respond_to?(:providedLabel)
  add_pref_label(value)
end