Class: Alma::AvailabilityResponse

Inherits:
Object
  • Object
show all
Defined in:
lib/alma/availability_response.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(response) ⇒ AvailabilityResponse

Returns a new instance of AvailabilityResponse.



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# File 'lib/alma/availability_response.rb', line 9

def initialize(response)
  @availability = parse_bibs_data(response.each)
end

Instance Attribute Details

#availability ⇒ Object

Returns the value of attribute availability.



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# File 'lib/alma/availability_response.rb', line 7

def availability
  @availability
end

Instance Method Details

#build_holdings_for(bib) ⇒ Object 



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# File 'lib/alma/availability_response.rb', line 22

def build_holdings_for(bib)
  get_inventory_fields_for(bib).map do |inventory_field|
    # Use the mapping for this inventory type
    subfield_codes = Alma::INVENTORY_SUBFIELD_MAPPING[inventory_field['tag']]
     
    inventory_field.
      # Get all the subfields for this inventory field
      fetch('subfield', []).
      # Limit to only subfields codes for which we have a mapping
      select {|sf| subfield_codes.key? sf['code'] }.
      # Transform the array of subfields into a hash with mapped code as key 
      reduce(Hash.new) { |acc, subfield| 
        acc.merge({"#{subfield_codes[subfield['code']]}" => subfield['content']})
       }.
      # Include the inventory type
      merge({'inventory_type' => subfield_codes['INVENTORY_TYPE']})
  end
end

#get_inventory_fields_for(bib) ⇒ Object 



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# File 'lib/alma/availability_response.rb', line 41

def get_inventory_fields_for(bib)
  # Return only the datafields with tags AVA, AVD, or AVE  
  bib.record
    .fetch('datafield', [])
    .select { |df| Alma::INVENTORY_SUBFIELD_MAPPING.key?(df['tag']) }
end

#parse_bibs_data(bibs) ⇒ Object

Data structure for holdings information of bib records.

A hash with mms ids as keys, with values of an array of one or more hashes of holdings info



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# File 'lib/alma/availability_response.rb', line 16

def parse_bibs_data(bibs)
  bibs.reduce(Hash.new) { |acc, bib|
    acc.merge({"#{bib.id}" => {holdings: build_holdings_for(bib)}})
  }
end