afred

class MyDatastream < ActiveFedora::NTriplesRDFDatastream
end

afred

class MyDatastream < ActiveFedora::NTriplesRDFDatastream
end

afred

class MyDatastream < ActiveFedora::NTriplesRDFDatastream
end

afred

class MyDatastream < ActiveFedora::RDFDatastream
  property :foo, predicate: ActiveTriples::Resource.new('http://example.com#foo'), class_name: 'Foo'
end

my_ds = MyDatastream.new

# I would expect this to whine.. but it doesn.
my_ds.foo = "this is definitely not a Foo"

afred

class MyModel < ActiveFedora::Base
end

class MyDatastream < ActiveFedora::RDFDatastream
  property :foo, predicate: ActiveTriples:Resource.new('http://example.com#foo'), 
end

afred

app/models/generic_file.rb

class GenericFile < ActiveFedora::Base
  has_metadata 'descMetadata', type: MediaAnnotationDatastream
  has_attributes :title_attributes, datastream: 'descMetadata', multiple: true
  attr_accessible   :title_attributes     # <== needs to be changed to use strong params, yes?
end

app/models/datastream/media_annotation_datastream.rb

afred

Handling pbcoreContributor, contributor, and contributorRole

Example: Contributor name as a literal.

NOTE: All PBCore input is using PBCore 2.0 XML unless otherwise specified.
NOTE: All RDF output is in Turtle format unless otherwise specified.

PBCore input:

<pbcoreDescriptionDocument>

afred

Handling pbcoreCreator, creator, and creatorRole

Example: creator name is a literal.

NOTE: All PBCore input is using PBCore 2.0 XML unless otherwise specified.
NOTE: All RDF output is in Turtle format unless otherwise specified.

PBCore input:

<pbcoreDescriptionDocument>

afred

Making better use of code generators in Hydra gems.

The problem:

• Code that is generated by a gem (configuration, templates, etc) is only guaranteed to work with the version of the gem that generated it.

• Upgrading the gem may cause the previously generated code to become obsolete.

afred

# Suppose DogBehavior and Dog are defined in a gem.
module DogBehavior
  def go_pee
    puts "i am now peeing"
  end
end

class Dog
  include DogBehavior
end