Class: Qa::Authorities::Loc

Inherits:
Base
  • Object
show all
Defined in:
lib/qa/authorities/loc.rb

Instance Attribute Summary

Attributes inherited from Base

#query_url, #raw_response, #response

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

authority_valid?, #results

Constructor Details

#initialize(q, sub_authority = '') ⇒ Loc

Initialze the Loc class with a query and get the http response from LOC’s server. This is set to a JSON object



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# File 'lib/qa/authorities/loc.rb', line 8

def initialize(q, sub_authority='')
  q += '*'
  authority_url = sub_authorityURL(sub_authority)
  self.query_url =  "http://id.loc.gov/search/?q=#{q}&q=#{authority_url}&format=json"

  super
end

Class Method Details

.sub_authorities ⇒ Object 



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# File 'lib/qa/authorities/loc.rb', line 108

def self.sub_authorities
  ['iso639-2', 'subjects', 'names', 'classification', 'childrensSubjects', 'genreForms', 'graphicMaterials', 'organizations', 'relators', 'countries', 'geographicAreas', 'languages', 'iso639-5', 'edtf', 'preservation', 'actionsGranted', 'agentType', 'contentLocationType', 'copyrightStatus', 'cryptographicHashFunctions', 'environmentCharacteristic', 'environmentPurpose', 'eventRelatedAgentRole', 'eventRelatedObjectRole', 'eventType', 'formatRegistryRole', 'hardwareType', 'inhibitorTarget', 'inhibitorType', 'objectCategory', 'preservationLevelRole', 'relationshipSubType', 'relationshipType', 'rightsBasis', 'rightsRelatedAgentRole', 'signatureEncoding', 'signatureMethod', 'softwareType', 'storageMedium']
end

Instance Method Details

#get_full_record(id) ⇒ Object 



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# File 'lib/qa/authorities/loc.rb', line 138

def get_full_record(id)
  full_record = nil
  parsed_result = {}
  self.raw_response.each do |single_response|
    if single_response[0] == "atom:entry"

      single_response.each do |result_part|
        if(result_part[0] == 'atom:title')
          if id == result_part[2]
            full_record = single_response
          end
        end

        if(result_part[0] == 'atom:id')
          if id == result_part[2]
            full_record = single_response
          end
        end

      end

    end
  end


  if full_record != nil
    full_record.each do |section|
      if section.class == Array
        label = section[0].split(':').last.to_s
        case label
          when 'title'
            parsed_result[label] = section[2]
          when 'link'
            if section[1]['type'] != nil
              parsed_result[label + "||#{section[1]['type']}"] = section[1]["href"]
            else
              parsed_result[label] = section[1]["href"]
            end
          when 'id'
            parsed_result[label] = section[2]
          when 'author'
            author_list = []
            #FIXME: Find example with two authors to better understand this data.
            author_list << section[2][2]
            parsed_result[label] = author_list
          when 'updated'
            parsed_result[label] = section[2]
          when 'created'
            parsed_result[label] = section[2]
        end

      end
    end
  else
    raise Exception 'Lookup without using a result search first not implemented yet'
  end

  parsed_result

end

#parse_authority_response ⇒ Object 



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# File 'lib/qa/authorities/loc.rb', line 113

def parse_authority_response
  result = []
  self.raw_response.each do |single_response|
    if single_response[0] == "atom:entry"
      id = nil
      label = ''
      single_response.each do |result_part|
        if(result_part[0] == 'atom:title')
          label = result_part[2]
        end

        if(result_part[0] == 'atom:id')
          id = result_part[2]
        end

      end

      id ||= label
      result << {"id"=>id, "label"=>label}

    end
  end
  self.response = result
end

#sub_authorityURL(sub_authority) ⇒ Object 



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# File 'lib/qa/authorities/loc.rb', line 16

def sub_authorityURL(sub_authority)
  vocab_base_url = 'cs%3Ahttp%3A%2F%2Fid.loc.gov%2Fvocabulary%2F'
  authority_base_url = 'cs%3Ahttp%3A%2F%2Fid.loc.gov%2Fauthorities%2F'
  datatype_base_url = 'cs%3Ahttp%3A%2F%2Fid.loc.gov%2Fdatatypes%2F'
  vocab_preservation_base_url = 'cs%3Ahttp%3A%2F%2Fid.loc.gov%2Fvocabulary%2Fpreservation%2F'

  case sub_authority
    when 'subjects'
      return authority_base_url + URI.escape(sub_authority)
    when 'names'
      return authority_base_url + URI.escape(sub_authority)
    when 'classification'
      return authority_base_url + URI.escape(sub_authority)
    when 'childrensSubjects'
      return authority_base_url + URI.escape(sub_authority)
    when 'genreForms'
      return authority_base_url + URI.escape(sub_authority)
    when 'graphicMaterials'
      return vocab_base_url + URI.escape(sub_authority)
    when 'organizations'
      return vocab_base_url + URI.escape(sub_authority)
    when 'relators'
      return vocab_base_url + URI.escape(sub_authority)
    when 'countries'
      return vocab_base_url + URI.escape(sub_authority)
    when 'geographicAreas'
      return vocab_base_url + URI.escape(sub_authority)
    when 'languages'
      return vocab_base_url + URI.escape(sub_authority)
    when 'iso639-1'
      return vocab_base_url + URI.escape(sub_authority)
    when 'iso639-2'
      return vocab_base_url + URI.escape(sub_authority)
    when 'iso639-5'
      return vocab_base_url + URI.escape(sub_authority)
    when 'edtf'
      return datatype_base_url + URI.escape(sub_authority)
    when 'preservation'
      return vocab_base_url + URI.escape(sub_authority)
    when 'actionsGranted'
      return vocab_base_url + URI.escape(sub_authority)
    when 'agentType'
      return vocab_base_url + URI.escape(sub_authority)
    when 'contentLocationType'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'copyrightStatus'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'cryptographicHashFunctions'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'environmentCharacteristic'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'environmentPurpose'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'eventRelatedAgentRole'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'eventRelatedObjectRole'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'eventType'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'formatRegistryRole'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'hardwareType'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'inhibitorTarget'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'inhibitorType'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'objectCategory'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'preservationLevelRole'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'relationshipSubType'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'relationshipType'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'rightsBasis'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'rightsRelatedAgentRole'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'signatureEncoding'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'signatureMethod'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'softwareType'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    when 'storageMedium'
      return vocab_preservation_base_url + URI.escape(sub_authority)
    else
      return ''
  end
end