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Contents
require 'builder'
# This module provide Dublin Core export based on the document's semantic values
module Blacklight::Document::DublinCore
def self.extended(document)
# Register our exportable formats
Blacklight::Document::DublinCore.register_export_formats( document )
end
def self.register_export_formats(document)
document.will_export_as(:xml)
document.will_export_as(:dc_xml, "text/xml")
document.will_export_as(:oai_dc_xml, "text/xml")
end
def dublin_core_field_names
[:contributor, :coverage, :creator, :date, :description, :format, :identifier, :language, :publisher, :relation, :rights, :source, :subject, :title, :type]
end
# dublin core elements are mapped against the #dublin_core_field_names whitelist.
def export_as_oai_dc_xml
xml = Builder::XmlMarkup.new
xml.tag!("oai_dc:dc",
'xmlns:oai_dc' => "http://www.openarchives.org/OAI/2.0/oai_dc/",
'xmlns:dc' => "http://purl.org/dc/elements/1.1/",
'xmlns:xsi' => "http://www.w3.org/2001/XMLSchema-instance",
'xsi:schemaLocation' => %{http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd}) do
self.to_semantic_values.select { |field, values| dublin_core_field_name? field }.each do |field,values|
Array.wrap(values).each do |v|
xml.tag! "dc:#{field}", v
end
end
end
xml.target!
end
alias_method :export_as_xml, :export_as_oai_dc_xml
alias_method :export_as_dc_xml, :export_as_oai_dc_xml
private
def dublin_core_field_name? field
dublin_core_field_names.include? field.to_sym
end
end
Version data entries
20 entries across 20 versions & 1 rubygems