mods exporter

class MODSSerializer < ASpaceExport::Serializer
  serializer_for :mods

  include JSONModel

  def serialize_mods_inner(mods, xml)

    xml.titleInfo {
      xml.title mods.title
    }
    
    xml.typeOfResource mods.type_of_resource

    xml.language {
      xml.languageTerm(:type => 'code') {
        xml.text mods.language_term
      }
      
    }
    
    xml.physicalDescription{
      mods.extents.each do |extent|
        xml.extent extent
      end
    }
    
    mods.notes.each do |note|
      if note.wrapping_tag
        xml.send(note.wrapping_tag) {
          serialize_note(note, xml)
        }
      else
        serialize_note(note, xml)
      end
    end

    mods.subjects.each do |subject|
      xml.subject(:authority => subject['source']) {
        subject['terms'].each do |term|
          xml.topic term
        end
      }
    end

    mods.names.each do |name|

      case name['role']
      when 'subject'
        xml.subject {
          serialize_name(name, xml)
        }
      else
        serialize_name(name, xml)
      end
    end
    
    mods.parts.each do |part|
      xml.part(:ID => part['id']) {
        xml.detail {
          xml.title part['title']
        }
      }
    end

    # flattened tree
    mods.each_related_item do |item|
      xml.relatedItem(:type => 'constituent') {
        serialize_mods_inner(item, xml)
      }
    end

    xml.relatedItem(:type => 'host') {
        xml.name mods.resource
      }
    end
end

mods model

class MODSModel < ASpaceExport::ExportModel
  model_for :mods

  include JSONModel

  attr_accessor :resource
  
  @archival_object_map = {
    :title => :title=,
    :language => :language_term=,
    :extents => :handle_extent,
    :subjects => :handle_subjects,
    :linked_agents => :handle_agents,
    :notes => :handle_notes,
    :linked_instances => :handle_instances,
  }
  
  def initialize
    @extents = []
    @notes = []
    @subjects = []
    @names = []
    @parts = []
    @resource =[]
  end

  def handle_instances(linked_instances)
    linked_instances.each do |link|
      component = link['_resolved']
      self.resource << {
        'title' => component['title']
      }
    end
  end

end