Class: MARC::VisualRecord

Inherits:
Record
  • Object
show all
Defined in:
lib/enhanced_marc/visual_record.rb

Overview

A class that represents an individual MARC record. Every record is made up of a collection of MARC::Field objects.

Instance Attribute Summary

Attributes inherited from Record

#record_type

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Record

#bibliographic_level, #composition_form, #contains_type?, #created_on, #get_dates, #inspect_fixed_fields, #is_archival?, #languages, #publication_country, #to_typed_record

Constructor Details

#initialize ⇒ VisualRecord

Returns a new instance of VisualRecord.



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# File 'lib/enhanced_marc/visual_record.rb', line 7

def initialize
  super
  @leader[6] = 'g' if @leader[6,1] == ' '
  @leader[7] = 'm' if @leader[7,1] == ' '
  @record_type = 'VIS'
  @bibliographic_level = @leader.get_blvl
  extend VisualType
  inspect_fixed_fields
end

Class Method Details

.new_from_record(record) ⇒ Object 



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# File 'lib/enhanced_marc/visual_record.rb', line 29

def self.new_from_record(record)
  rec = VisualRecord.new
  record.instance_variables.each { | var |
    rec.instance_variable_set(var, record.instance_variable_get(var))
  }
  error = rec.valid_type? ? nil : 'Incorrect type declaration in leader'
  if !error && !rec.valid_blvl?
    error = 'Incorrect bibliographic declaration in leader'
  end
  return Exception.new(error) if error
  rec
end

Instance Method Details

#valid_blvl? ⇒ Boolean Also known as: is_valid_blvl?

Returns:

  • (Boolean) 


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# File 'lib/enhanced_marc/visual_record.rb', line 23

def valid_blvl?
  return false unless @leader[7, 1] =~ /[abcdims]{1}/
  true
end

#valid_type? ⇒ Boolean Also known as: is_valid_type?

Returns:

  • (Boolean) 


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# File 'lib/enhanced_marc/visual_record.rb', line 17

def valid_type?
  return false unless @leader[6, 1] =~ /[gkro]{1}/
  true
end