rdf-ex/lib/rdf/utils/resource_classifier.ex

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defmodule RDF.Utils.ResourceClassifier do
@moduledoc false
alias RDF.Description
@rdf_type RDF.uri("http://www.w3.org/1999/02/22-rdf-syntax-ns#type")
@doc """
Determines if the given resource is RDF property by
"""
def property?(resource, data) do
with %Description{} = description <- RDF.Data.description(data, resource) do
property_by_domain?(description) or
property_by_rdf_type?(Description.get(description, @rdf_type))
end
# || property_by_predicate_usage?(resource, data)
end
@property_properties ~w[
http://www.w3.org/2000/01/rdf-schema#domain
http://www.w3.org/2000/01/rdf-schema#range
http://www.w3.org/2000/01/rdf-schema#subPropertyOf
http://www.w3.org/2002/07/owl#equivalentProperty
http://www.w3.org/2002/07/owl#inverseOf
http://www.w3.org/2002/07/owl#propertyDisjointWith
]
|> Enum.map(&RDF.uri/1)
|> MapSet.new
defp property_by_domain?(description) do
Enum.any? @property_properties, fn property ->
description[property]
end
end
@property_classes ~w[
http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
http://www.w3.org/2000/01/rdf-schema#ContainerMembershipProperty
http://www.w3.org/2002/07/owl#ObjectProperty
http://www.w3.org/2002/07/owl#DatatypeProperty
http://www.w3.org/2002/07/owl#AnnotationProperty
http://www.w3.org/2002/07/owl#FunctionalProperty
http://www.w3.org/2002/07/owl#InverseFunctionalProperty
http://www.w3.org/2002/07/owl#SymmetricProperty
http://www.w3.org/2002/07/owl#AsymmetricProperty
http://www.w3.org/2002/07/owl#ReflexiveProperty
http://www.w3.org/2002/07/owl#IrreflexiveProperty
http://www.w3.org/2002/07/owl#TransitiveProperty
http://www.w3.org/2002/07/owl#DeprecatedProperty
]
|> Enum.map(&RDF.uri/1)
|> MapSet.new
defp property_by_rdf_type?(nil), do: nil
defp property_by_rdf_type?(types) do
not (
types
|> MapSet.new
|> MapSet.disjoint?(@property_classes)
)
end
# defp property_by_predicate_usage?(resource, data) do
# resource in Graph.predicates(data) || nil
# end
end