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Contents
# frozen_string_literal: true
module Wings
##
# This registry provides an off-ramp for legacy ActiveFedora models.
#
# New valkyrie models can be defined manually and registered as an analogue
# of an existing `ActiveFedora::Base` implementer. This allows Wings to cast
# the new model to the legacy model when saving, ensuring backwards compatible
# data on save.
#
# Several models from Hyrax components have default mappings provided by Wings.
#
# @example
# Wings::ModelRegistry.register(NewValkyrieModel, OldActiveFedoraModel)
#
# Wings::ModelRegistry.lookup(NewValkyrieModel) # => OldActiveFedoraModel
# Wings::ModelRegistry.reverse_lookup(OldActiveFedoraModel) # => NewValkyrieModel
#
class ModelRegistry
include Singleton
def self.register(*args)
instance.register(*args)
end
def self.lookup(*args)
instance.lookup(*args)
end
def self.reverse_lookup(*args)
instance.reverse_lookup(*args)
end
def initialize
@map = {}
end
def register(valkyrie, active_fedora)
@map[valkyrie.name] = active_fedora.name
end
def lookup(valkyrie)
valkyrie = valkyrie._canonical_valkyrie_model if
valkyrie.respond_to?(:_canonical_valkyrie_model)
@map[valkyrie.name]&.safe_constantize ||
ActiveFedoraConverter::DefaultWork(valkyrie)
end
def reverse_lookup(active_fedora)
@map.rassoc(active_fedora.name)&.first&.safe_constantize
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems