DataSpace Collection Mapping for Certificate Programs

dspacerb

netid = "jrg5@princeton.edu"
DSpace.login(netid)
require "/usr/local/DR/home/dspace/ruby/dspace-jruby/program_membership_job"
program_name = "East Asian Studies Program"
collection_handle = "88435/dsp016682x659t"
job = ProgramMembershipJob.build(program_name, collection_handle)
job.perform
DSpace.commit

program_membership_job.rb

class ProgramMembershipJob

  def self.build(program_name, collection_handle)
    program_collection = DSpace.fromString(collection_handle)
    new(program_name, program_collection)
  end

  def initialize(program_name, program_collection)
    @program_name = program_name
    @program_collection = program_collection
  end

  def collection_members
    @collection_members ||= begin
                              itr = @program_collection.getItems
                              members = []

                              while (itr.hasNext) do
                                member = itr.next
                                members << member
                              end
                              members
                            end
  end

  def in_collection?(item)
    member_ids = collection_members.map(&:getID)

    member_ids.include?(item.getID)
  end

  def find_by_program
    DSpace.findByMetadataValue("pu.certificate", @program_name, DConstants::ITEM)
  end

  def perform
    items = find_by_program

    items.each do |item|
      if !in_collection?(item)
        puts "Adding the Item #{item.getID} to the Collection #{@program_collection.getID}"
        @program_collection.addItem(item)
      end
    end
  end
end