Class: LD4L::WorksRDF::GetMetadataFromSolrDoc

Inherits:
Object
  • Object
show all
Defined in:
lib/ld4l/works_rdf/services/metadata_services/get_metadata_from_solr_doc.rb

Class Method Summary collapse

Class Method Details

.call(solr_doc, solr_field_translations) ⇒ Object

TODO This is Cornell specific. Need a general processor of solr OR a callback to an institution specific processor.

Get metadata from solr document.

Parameters:

  • solr (Hash) —

    document

  • translations (Hash) —

    identifying location in solr doc for metadata fields



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# File 'lib/ld4l/works_rdf/services/metadata_services/get_metadata_from_solr_doc.rb', line 13

def self.call( solr_doc, solr_field_translations )
  flat_doc = flatten(solr_doc["arr"])
  flat_doc.merge! interpret_str(solr_doc["str"])
  metadata = self.populate_with_solr_values(flat_doc, solr_field_translations)
  metadata
end

.flatten(solr_doc) ⇒ Object 



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# File 'lib/ld4l/works_rdf/services/metadata_services/get_metadata_from_solr_doc.rb', line 47

def self.flatten( solr_doc )
  flat_hash = {}
  solr_doc.each do |h|
    name = h["name"]
    value = h["str"]
    flat_hash[name] = value
  end
  flat_hash
end

.interpret_str(str_field) ⇒ Object 



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# File 'lib/ld4l/works_rdf/services/metadata_services/get_metadata_from_solr_doc.rb', line 57

def self.interpret_str( str_field )
  flat_hash = {}
  flat_hash["id"] = str_field.first
  flat_hash["author"] = str_field[1] if str_field.size > 3
  flat_hash["title"] = str_field.last
  flat_hash
end

.populate_with_solr_values(solr_doc, solr_field_translations) ⇒ Object 



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# File 'lib/ld4l/works_rdf/services/metadata_services/get_metadata_from_solr_doc.rb', line 20

def self.populate_with_solr_values( solr_doc, solr_field_translations )
  metadata = LD4L::WorksRDF::WorkMetadata.new()

  metadata.source           = "Cornell Library"
  metadata.set_source_to_cornell_library

  # metadata.format           = solr_doc["format"].upcase.to_sym
  metadata.set_type(solr_doc["format"])
  metadata.local_id         = solr_doc["id"]
  metadata.uri              = "https://newcatalog.library.cornell.edu/catalog/"+metadata.local_id
  metadata.title            = solr_doc["title"]
  metadata.author           = solr_doc["author"]
  metadata.pub_date         = solr_doc["pub_date_display"]
  metadata.pub_info         = solr_doc["pub_info_display"]
  metadata.language         = solr_doc["language_display"]
  metadata.edition          = solr_doc["edition_display"]

  other_ids = solr_doc["other_id_display"]
  oclc_id = nil
  oclc_id = other_ids.select { |id| id.start_with? "(OCoLC)" } if other_ids.is_a? Array
  oclc_id = oclc_id.first if (oclc_id.is_a? Array) && (oclc_id.size > 0)
  oclc_id = other_ids if (other_ids.is_a? String) && (other_ids.start_with? "(OCoLC)")
  metadata.oclc_id = oclc_id[7..-1] unless (oclc_id.nil?) || (!oclc_id.is_a? String)

  metadata
end