Class: Valkyrie::Storage::Fedora

Inherits:
Object
  • Object
show all
Defined in:
lib/valkyrie/storage/fedora.rb

Overview

Implements the DataMapper Pattern to store binary data in fedora

Constant Summary collapse

PROTOCOL = 
'fedora://'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(connection:) ⇒ Fedora

Returns a new instance of Fedora.



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# File 'lib/valkyrie/storage/fedora.rb', line 7

def initialize(connection:)
  @connection = connection
end

Instance Attribute Details

#connection ⇒ Object (readonly)

Returns the value of attribute connection.



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# File 'lib/valkyrie/storage/fedora.rb', line 5

def connection
  @connection
end

Instance Method Details

#delete(id:) ⇒ Object

Delete the file in Fedora associated with the given identifier.

Parameters:



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# File 'lib/valkyrie/storage/fedora.rb', line 46

def delete(id:)
  ActiveFedora::File.new(active_fedora_identifier(id: id)).ldp_source.delete
end

#find_by(id:) ⇒ Valkyrie::StorageAdapter::StreamFile

Return the file associated with the given identifier

Parameters:

Returns:

Raises:

  • Valkyrie::StorageAdapter::FileNotFound if nothing is found



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# File 'lib/valkyrie/storage/fedora.rb', line 21

def find_by(id:)
  Valkyrie::StorageAdapter::StreamFile.new(id: id, io: response(id: id))
rescue ::Ldp::Gone
  raise Valkyrie::StorageAdapter::FileNotFound
end

#handles?(id:) ⇒ Boolean

Returns true if this adapter can handle this type of identifer.

Parameters:

Returns:

  • (Boolean) —

    true if this adapter can handle this type of identifer



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# File 'lib/valkyrie/storage/fedora.rb', line 13

def handles?(id:)
  id.to_s.start_with?(PROTOCOL)
end

#upload(file:, original_filename:, resource:) ⇒ Valkyrie::StorageAdapter::StreamFile

Parameters:

Returns:



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# File 'lib/valkyrie/storage/fedora.rb', line 31

def upload(file:, original_filename:, resource:)
  # TODO: this is a very naive aproach. Change to PCDM
  identifier = resource.id.to_uri + '/original'
  ActiveFedora::File.new(identifier) do |af|
    af.content = file
    af.original_name = original_filename
    af.save!
    af.metadata.set_value(:type, af.metadata.type + [::RDF::URI('http://pcdm.org/use#OriginalFile')])
    af.metadata.save
  end
  find_by(id: Valkyrie::ID.new(identifier.to_s.sub(/^.+\/\//, PROTOCOL)))
end