Class: Cocina::Models::Validators::DescriptionDateTimeVisitorValidator

Inherits:
BaseDescriptionVisitorValidator show all
Defined in:
lib/cocina/models/validators/description_date_time_visitor_validator.rb

Overview

Validates that dates of known types are type-valid using the visitor pattern.

Constant Summary collapse

VALIDATABLE_TYPES = 
%w[edtf iso8601 w3cdtf].freeze

Instance Method Summary collapse

Methods inherited from BaseDescriptionVisitorValidator

#path_to_s, #visit_array, #visit_obj

Instance Method Details

#validate! ⇒ Object

Raises:



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# File 'lib/cocina/models/validators/description_date_time_visitor_validator.rb', line 64

def validate!
  return if invalid_groups.empty?

  invalid_dates = invalid_groups.filter_map do |path, values|
    next if values.empty?

    [*values, encoding_paths[path]]
  end

  return if invalid_dates.empty?

  raise ValidationError, "Invalid date(s) in description: #{invalid_dates}"
end

#visit_hash(hash:, path:) ⇒ Object

rubocop:disable Metrics/CyclomaticComplexity



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# File 'lib/cocina/models/validators/description_date_time_visitor_validator.rb', line 12

def visit_hash(hash:, path:) # rubocop:disable Metrics/CyclomaticComplexity
  # Only dates nested under a `date` key are subject to validation.
  # For example, event.date is in scope but event.note is not.
  return unless in_date_path?(path)

  # A hash with a validatable encoding.code "owns" the encoding for its
  # entire subtree.  For example, the outer hash below owns iso8601 for
  # both structuredValue children even though those children carry no
  # encoding themselves:
  #
  #   date: [{
  #     structuredValue: [
  #       { value: '1996', type: 'start' },
  #       { value: '1998', type: 'end' }
  #     ],
  #     encoding: { code: 'iso8601' }   # ← registered at path [:date, 0]
  #   }]
  #
  # We record the path before visiting children because
  # CompositeDescriptionValidator calls visit_hash on a parent before
  # recursing into its children, so the encoding is always registered
  # before any child value hashes are visited.
  code = hash.dig(:encoding, :code)
  encoding_paths[path.dup] = code if code && VALIDATABLE_TYPES.include?(code)

  value = hash[:value]
  return unless value.is_a?(String)

  # Resolve which encoding governs this value by finding the longest
  # registered encoding path that is a prefix of the current path.
  # Longest-prefix wins so that a more-specific inner encoding overrides
  # a less-specific outer one.  For example, given:
  #
  #   date: [{
  #     parallelValue: [
  #       { value: '1996', encoding: { code: 'edtf' } },  # path [:date,0,:parallelValue,0]
  #       { value: '一九九六' }                              # path [:date,0,:parallelValue,1]
  #     ],
  #     encoding: { code: 'iso8601' }                      # path [:date,0]
  #   }]
  #
  # The value '1996' at [:date,0,:parallelValue,0] matches both [:date,0]
  # (iso8601) and [:date,0,:parallelValue,0] (edtf); the longer prefix wins
  # and it is validated as edtf.  The value '一九九六' at
  # [:date,0,:parallelValue,1] only matches [:date,0] (iso8601).
  encoding_path, code = find_encoding_for(path)
  return unless code

  invalid_groups[encoding_path] ||= []
  invalid_groups[encoding_path] << value unless valid_value?(value, code)
end