Class: BerkeleyLibrary::AV::Metadata

Inherits:
Object
  • Object
show all
Includes:
Constants
Defined in:
lib/berkeley_library/av/metadata.rb,
lib/berkeley_library/av/metadata/link.rb,
lib/berkeley_library/av/metadata/field.rb,
lib/berkeley_library/av/metadata/value.rb,
lib/berkeley_library/av/metadata/fields.rb,
lib/berkeley_library/av/metadata/source.rb,
lib/berkeley_library/av/metadata/readers/alma.rb,
lib/berkeley_library/av/metadata/readers/base.rb,
lib/berkeley_library/av/metadata/readers/tind.rb

Defined Under Namespace

Modules: Fields, Readers Classes: Field, Link, Source, Value

Constant Summary

Constants included from Constants

Constants::ALMA_RECORD_RE, Constants::MILLENNIUM_RECORD_RE, Constants::OCLC_RECORD_RE, Constants::SUBFIELD_CODES_TRACKS, Constants::SUBFIELD_CODE_ALMA_BIB_NUMBER, Constants::SUBFIELD_CODE_DURATION, Constants::SUBFIELD_CODE_LINKTEXT, Constants::SUBFIELD_CODE_PATH, Constants::SUBFIELD_CODE_TIND_BIB_NUMBER, Constants::SUBFIELD_CODE_TITLE, Constants::SUBFIELD_CODE_URI, Constants::TAG_ALMA_MIGRATION_INFO, Constants::TAG_LINK_FIELD, Constants::TAG_TIND_CATALOG_ID, Constants::TAG_TIND_ID, Constants::TAG_TITLE_FIELD, Constants::TAG_TRACK_FIELD, Constants::TAG_TRANSCRIPT_FIELD, Constants::UNKNOWN_TITLE

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(record_id:, source:, marc_record: nil) ⇒ Metadata

TODO: can we stop passing in record ID / stop lazy-loading MARC?



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# File 'lib/berkeley_library/av/metadata.rb', line 14

def initialize(record_id:, source:, marc_record: nil)
  @record_id = record_id
  @source = source
  @marc_record = marc_record
end

Instance Attribute Details

#record_id ⇒ Object (readonly)

Returns the value of attribute record_id.



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# File 'lib/berkeley_library/av/metadata.rb', line 11

def record_id
  @record_id
end

#source ⇒ Object (readonly)

Returns the value of attribute source.



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# File 'lib/berkeley_library/av/metadata.rb', line 11

def source
  @source
end

Class Method Details

.for_record(record_id:) ⇒ Object

Raises:



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# File 'lib/berkeley_library/av/metadata.rb', line 67

def for_record(record_id:)
  source = Source.for_record_id(record_id)
  raise AV::RecordNotFound, "Unable to determine metadata source for record ID: #{record_id.inspect}" unless source

  Metadata.new(record_id:, source:)
end

Instance Method Details

#alma_id ⇒ Object 



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# File 'lib/berkeley_library/av/metadata.rb', line 30

def alma_id
  id_001 if source == Source::ALMA
end

#bib_number ⇒ Object 



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# File 'lib/berkeley_library/av/metadata.rb', line 20

def bib_number
  return @bib_number if instance_variable_defined?(:@bib_number)

  @bib_number = source.find_bib_number(self)
end

#calnet_only? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/berkeley_library/av/metadata.rb', line 58

def calnet_only?
  restrictions.calnet_only?
end

#calnet_or_ip? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/berkeley_library/av/metadata.rb', line 54

def calnet_or_ip?
  restrictions.calnet_or_ip?
end

#description ⇒ Object 



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# File 'lib/berkeley_library/av/metadata.rb', line 50

def description
  @description ||= (desc_value = values_by_field[Fields::DESCRIPTION]) ? desc_value.as_string : ''
end

#display_uri ⇒ Object 



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# File 'lib/berkeley_library/av/metadata.rb', line 62

def display_uri
  @display_uri ||= source.display_uri_for(self)
end

#each_value ⇒ Object 



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# File 'lib/berkeley_library/av/metadata.rb', line 42

def each_value(&)
  values_by_field.each_value(&)
end

#marc_record ⇒ Object 



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# File 'lib/berkeley_library/av/metadata.rb', line 34

def marc_record
  @marc_record ||= source.record_for(record_id)
end

#tind_id ⇒ Object 



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# File 'lib/berkeley_library/av/metadata.rb', line 26

def tind_id
  id_001 if source == Source::TIND
end

#title ⇒ Object 



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# File 'lib/berkeley_library/av/metadata.rb', line 46

def title
  @title ||= (title_value = values_by_field[Fields::TITLE]) ? title_value.entries.first : UNKNOWN_TITLE
end

#values_by_field ⇒ Object 



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# File 'lib/berkeley_library/av/metadata.rb', line 38

def values_by_field
  @values_by_field ||= Fields.default_values_from(marc_record).tap { |values| ensure_catalog_link(values) }
end