collection.rb

module Elibri
  module ONIX
    module Release_3_0

      class Collection
        
        #from ONIX documentation:
        #A bibliographic collection in ONIX 3.0 means a fixed or indefinite number of products, published over a fixed or indefinite time period, which share collective attributes (including a collective title) that are required as part of the bibliographic record of each individual product. In this respect, such a collection is most often thought of as a series. A bibliographic collection may, however, also be traded as a single product (often thought of as a set), but this does not alter the way in which its collective attributes are described in the ONIX records for the individual products.
        #set. If a fixed or indefinite number of products have a collective title and  possibly  other collective attributes that are required as part of the bibliographic record of each individual product, then those products are regarded as forming a collection.
        #ONIX 3.0 recognises two major types of collection: a publisher collection, and an ascribed collection. A publisher collection is one that is identified either on the products themselves or in product information originating from the publisher. An ascribed collection is one that is identified by another party in the information supply chain, usually an aggregator, for the benefit of retailers and consumers.
        
        ATTRIBUTES = [
          :type, :title_detail, :full_title, :type_name
        ]
        
        RELATIONS = [
          :elements, :inspect_include_fields
        ]
        
        attr_accessor :type, :elements, :title_detail, :to_xml
        
        def initialize(data)
          @to_xml = data.to_s
          @type = data.at_xpath('xmlns:CollectionType').try(:text)
          @elements = data.xpath('xmlns:TitleElement').map { |element_data| TitleElement.new(element_data) }
          @title_detail = TitleDetail.new(data.at_xpath('xmlns:TitleDetail')) if data.at_xpath('xmlns:TitleDetail')
        end

        def full_title
          title_detail.try(:full_title)
        end

        def type_name
          Elibri::ONIX::Dict::Release_3_0::CollectionType.find_by_onix_code(@type).const_name.downcase
        end

        def inspect_include_fields
          [:type_name]
        end

      end

    end
  end
end