Module: Cul::Hydra::Models::Resource

Extended by:
ActiveSupport::Concern
Defined in:
app/models/concerns/cul/hydra/models/resource.rb

Constant Summary collapse

IMAGE_MIME_TYPES =

constants #

[
  'image/bmp',
  'image/gif',
  'image/jpeg',
  'image/png',
  'image/tiff'
]

Instance Method Summary collapse

Instance Method Details

#add_content_blob(blob, opts) ⇒ Object 



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# File 'app/models/concerns/cul/hydra/models/resource.rb', line 43

def add_content_blob(blob, opts)
  file_name = opts[:file_name]
  mime = opts[:mime_type].nil? ? mime_type(file_name) : opts[:mime_type]
  add_file_datastream(blob, :label=>file_name, :mimeType=>mime, :dsid => 'CONTENT')
  set_title_and_label( file_name, :only_if_blank=>true )
  if IMAGE_MIME_TYPES.include? mime
    blob.rewind
    # retrieve Nokogiri of image property RDF
    image_properties = Cul::Image::Properties.identify(blob)
    if image_properties
      image_prop_nodes = image_properties.nodeset
      relsext = datastreams['RELS-EXT']
      image_prop_nodes.each { |node|
        if node["resource"]
          is_literal = false
          object = RDF::URI.new(node["resource"])
        else
          is_literal = true
          object = RDF::Literal(node.text)
        end
        subject = RDF::URI(internal_uri)
        predicate = RDF::URI("#{node.namespace.href}#{node.name}")
        query = RDF::Query.new({ :subject => {predicate => :object}})
        relationships(predicate).dup.each { |stmt|
          relationships.delete(stmt)
        }
        add_relationship(predicate,object, is_literal)
        relationships_are_dirty=true
      }
      # add mimetype to DC:format values
      self.datastreams['DC'].update_values({[:format] => mime})
    end
  end
  blob.rewind
end

#resource! ⇒ Object 



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# File 'app/models/concerns/cul/hydra/models/resource.rb', line 36

def resource!
  add_relationship(:rdf_type, RDF::CUL.Resource.to_s)
  add_relationship(:rdf_type, RDF::PCDM.Object.to_s)
  @metadata_is_dirty = true
  update
end