Source code for rdflib.extras.infixowl

#!/usr/bin/env python
# -*- coding: utf-8 -*-

__doc__ = """RDFLib Python binding for OWL Abstract Syntax

see: http://www.w3.org/TR/owl-semantics/syntax.html
     http://owl-workshop.man.ac.uk/acceptedLong/submission_9.pdf

3.2.3 Axioms for complete classes without using owl:equivalentClass

Named class description of type 2 (with owl:oneOf) or type 4-6
(with owl:intersectionOf, owl:unionOf or owl:complementOf

Uses Manchester Syntax for __repr__

>>> exNs = Namespace('http://example.com/')
>>> namespace_manager = NamespaceManager(Graph())
>>> namespace_manager.bind('ex', exNs, override=False)
>>> namespace_manager.bind('owl', OWL, override=False)
>>> g = Graph()
>>> g.namespace_manager = namespace_manager

Now we have an empty graph, we can construct OWL classes in it
using the Python classes defined in this module

>>> a = Class(exNs.Opera, graph=g)

Now we can assert rdfs:subClassOf and owl:equivalentClass relationships
(in the underlying graph) with other classes using the 'subClassOf'
and 'equivalentClass' descriptors which can be set to a list
of objects for the corresponding predicates.

>>> a.subClassOf = [exNs.MusicalWork]

We can then access the rdfs:subClassOf relationships

>>> print(list(a.subClassOf))
[Class: ex:MusicalWork ]

This can also be used against already populated graphs:

>>> owlGraph = Graph().parse(str(OWL)) #doctest: +SKIP
>>> namespace_manager.bind('owl', OWL, override=False) #doctest: +SKIP
>>> owlGraph.namespace_manager = namespace_manager #doctest: +SKIP
>>> list(Class(OWL.Class, graph=owlGraph).subClassOf) #doctest: +SKIP
[Class: rdfs:Class ]

Operators are also available. For instance we can add ex:Opera to the extension
of the ex:CreativeWork class via the '+=' operator

>>> a #doctest: +SKIP
Class: ex:Opera SubClassOf: ex:MusicalWork
>>> b = Class(exNs.CreativeWork, graph=g)
>>> b += a
>>> print(sorted(a.subClassOf, key=lambda c:c.identifier)) #doctest: +SKIP
[Class: ex:CreativeWork , Class: ex:MusicalWork ]

And we can then remove it from the extension as well

>>> b -= a
>>> a #doctest: +SKIP
Class: ex:Opera SubClassOf: ex:MusicalWork

Boolean class constructions can also  be created with Python operators.
For example, The | operator can be used to construct a class consisting of a
owl:unionOf the operands:

>>> c =  a | b | Class(exNs.Work, graph=g)
>>> c #doctest: +SKIP
( ex:Opera OR ex:CreativeWork OR ex:Work )

Boolean class expressions can also be operated as lists (using python list
operators)

>>> del c[c.index(Class(exNs.Work, graph=g))]
>>> c #doctest: +SKIP
( ex:Opera OR ex:CreativeWork )

The '&' operator can be used to construct class intersection:

>>> woman = Class(exNs.Female, graph=g) & Class(exNs.Human, graph=g)
>>> woman.identifier = exNs.Woman
>>> woman #doctest: +SKIP
( ex:Female AND ex:Human )
>>> len(woman)
2

Enumerated classes can also be manipulated

>>> contList = [Class(exNs.Africa, graph=g), Class(exNs.NorthAmerica, graph=g)]
>>> EnumeratedClass(members=contList, graph=g) #doctest: +SKIP
{ ex:Africa ex:NorthAmerica }

owl:Restrictions can also be instantiated:

>>> Restriction(exNs.hasParent, graph=g, allValuesFrom=exNs.Human) #doctest: +SKIP
( ex:hasParent ONLY ex:Human )

Restrictions can also be created using Manchester OWL syntax in 'colloquial'
Python
>>> exNs.hasParent | some | Class(exNs.Physician, graph=g) #doctest: +SKIP
( ex:hasParent SOME ex:Physician )

>>> Property(exNs.hasParent,graph=g) | max | Literal(1) #doctest: +SKIP
( ex:hasParent MAX 1 )

>>> print(g.serialize(format='pretty-xml')) #doctest: +SKIP

"""

import itertools

from rdflib import BNode, Literal, Namespace, RDF, RDFS, URIRef, Variable
from rdflib.graph import Graph
from rdflib.collection import Collection
from rdflib.namespace import OWL, XSD
from rdflib.namespace import NamespaceManager
from rdflib.term import Identifier
from rdflib.util import first

import logging

logger = logging.getLogger(__name__)


"""
From: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/384122

Python has the wonderful "in" operator and it would be nice to have additional
infix operator like this. This recipe shows how (almost) arbitrary infix
operators can be defined.

"""

__all__ = [
    "nsBinds",
    "ACE_NS",
    "CLASS_RELATIONS",
    "some",
    "only",
    "max",
    "min",
    "exactly",
    "value",
    "PropertyAbstractSyntax",
    "AllClasses",
    "AllDifferent",
    "AllProperties",
    "AnnotatableTerms",
    "BooleanClass",
    "Callable",
    "CastClass",
    "Class",
    "ClassNamespaceFactory",
    "classOrIdentifier",
    "classOrTerm",
    "CommonNSBindings",
    "ComponentTerms",
    "DeepClassClear",
    "EnumeratedClass",
    "generateQName",
    "GetIdentifiedClasses",
    "Individual",
    "MalformedClass",
    "manchesterSyntax",
    "Ontology",
    "OWLRDFListProxy",
    "Property",
    "propertyOrIdentifier",
    "Restriction",
    "termDeletionDecorator",
]

# definition of an Infix operator class
# this recipe also works in jython
# calling sequence for the infix is either:
#  x |op| y
# or:
# x <<op>> y


class Infix:
    def __init__(self, function):
        self.function = function

    def __ror__(self, other):
        return Infix(lambda x, self=self, other=other: self.function(other, x))

    def __or__(self, other):
        return self.function(other)

    def __rlshift__(self, other):
        return Infix(lambda x, self=self, other=other: self.function(other, x))

    def __rshift__(self, other):
        return self.function(other)

    def __call__(self, value1, value2):
        return self.function(value1, value2)


nsBinds = {
    "skos": "http://www.w3.org/2004/02/skos/core#",
    "rdf": RDF,
    "rdfs": RDFS,
    "owl": OWL,
    "list": URIRef("http://www.w3.org/2000/10/swap/list#"),
    "dc": "http://purl.org/dc/elements/1.1/",
}


[docs]def generateQName(graph, uri): prefix, uri, localName = graph.compute_qname(classOrIdentifier(uri)) return ":".join([prefix, localName])
[docs]def classOrTerm(thing): if isinstance(thing, Class): return thing.identifier else: assert isinstance(thing, (URIRef, BNode, Literal)) return thing
[docs]def classOrIdentifier(thing): if isinstance(thing, (Property, Class)): return thing.identifier else: assert isinstance(thing, (URIRef, BNode)), ( "Expecting a Class, Property, URIRef, or BNode.. not a %s" % thing ) return thing
[docs]def propertyOrIdentifier(thing): if isinstance(thing, Property): return thing.identifier else: assert isinstance(thing, URIRef) return thing
[docs]def manchesterSyntax(thing, store, boolean=None, transientList=False): """ Core serialization """ assert thing is not None if boolean: if transientList: liveChildren = iter(thing) children = [manchesterSyntax(child, store) for child in thing] else: liveChildren = iter(Collection(store, thing)) children = [ manchesterSyntax(child, store) for child in Collection(store, thing) ] if boolean == OWL.intersectionOf: childList = [] named = [] for child in liveChildren: if isinstance(child, URIRef): named.append(child) else: childList.append(child) if named: def castToQName(x): prefix, uri, localName = store.compute_qname(x) return ":".join([prefix, localName]) if len(named) > 1: prefix = "( " + " AND ".join(map(castToQName, named)) + " )" else: prefix = manchesterSyntax(named[0], store) if childList: return ( str(prefix) + " THAT " + " AND ".join( [str(manchesterSyntax(x, store)) for x in childList] ) ) else: return prefix else: return "( " + " AND ".join([str(c) for c in children]) + " )" elif boolean == OWL.unionOf: return "( " + " OR ".join([str(c) for c in children]) + " )" elif boolean == OWL.oneOf: return "{ " + " ".join([str(c) for c in children]) + " }" else: assert boolean == OWL.complementOf elif OWL.Restriction in store.objects(subject=thing, predicate=RDF.type): prop = list(store.objects(subject=thing, predicate=OWL.onProperty))[0] prefix, uri, localName = store.compute_qname(prop) propString = ":".join([prefix, localName]) label = first(store.objects(subject=prop, predicate=RDFS.label)) if label: propString = "'%s'" % label for onlyClass in store.objects(subject=thing, predicate=OWL.allValuesFrom): return "( %s ONLY %s )" % (propString, manchesterSyntax(onlyClass, store)) for val in store.objects(subject=thing, predicate=OWL.hasValue): return "( %s VALUE %s )" % (propString, manchesterSyntax(val, store)) for someClass in store.objects(subject=thing, predicate=OWL.someValuesFrom): return "( %s SOME %s )" % (propString, manchesterSyntax(someClass, store)) cardLookup = { OWL.maxCardinality: "MAX", OWL.minCardinality: "MIN", OWL.cardinality: "EQUALS", } for s, p, o in store.triples_choices((thing, list(cardLookup.keys()), None)): return "( %s %s %s )" % (propString, cardLookup[p], o) compl = list(store.objects(subject=thing, predicate=OWL.complementOf)) if compl: return "( NOT %s )" % (manchesterSyntax(compl[0], store)) else: prolog = "\n".join(["PREFIX %s: <%s>" % (k, nsBinds[k]) for k in nsBinds]) qstr = ( prolog + "\nSELECT ?p ?bool WHERE {?class a owl:Class; ?p ?bool ." + "?bool rdf:first ?foo }" ) initb = {Variable("?class"): thing} for boolProp, col in store.query(qstr, processor="sparql", initBindings=initb): if not isinstance(thing, URIRef): return manchesterSyntax(col, store, boolean=boolProp) try: prefix, uri, localName = store.compute_qname(thing) qname = ":".join([prefix, localName]) except Exception: if isinstance(thing, BNode): return thing.n3() return "<" + thing + ">" label = first(Class(thing, graph=store).label) if label: return label else: return qname
[docs]def GetIdentifiedClasses(graph): for c in graph.subjects(predicate=RDF.type, object=OWL.Class): if isinstance(c, URIRef): yield Class(c)
[docs]def termDeletionDecorator(prop): def someFunc(func): func.property = prop return func return someFunc
class TermDeletionHelper: def __init__(self, prop): self.prop = prop def __call__(self, f): def _remover(inst): inst.graph.remove((inst.identifier, self.prop, None)) return _remover
[docs]class Individual(object): """ A typed individual """ factoryGraph = Graph()
[docs] def serialize(self, graph): for fact in self.factoryGraph.triples((self.identifier, None, None)): graph.add(fact)
[docs] def __init__(self, identifier=None, graph=None): self.__identifier = identifier is not None and identifier or BNode() if graph is None: self.graph = self.factoryGraph else: self.graph = graph self.qname = None if not isinstance(self.identifier, BNode): try: prefix, uri, localName = self.graph.compute_qname(self.identifier) self.qname = ":".join([prefix, localName]) except: pass
[docs] def clearInDegree(self): self.graph.remove((None, None, self.identifier))
[docs] def clearOutDegree(self): self.graph.remove((self.identifier, None, None))
[docs] def delete(self): self.clearInDegree() self.clearOutDegree()
[docs] def replace(self, other): for s, p, o in self.graph.triples((None, None, self.identifier)): self.graph.add((s, p, classOrIdentifier(other))) self.delete()
def _get_type(self): for _t in self.graph.objects(subject=self.identifier, predicate=RDF.type): yield _t def _set_type(self, kind): if not kind: return if isinstance(kind, (Individual, Identifier)): self.graph.add((self.identifier, RDF.type, classOrIdentifier(kind))) else: for c in kind: assert isinstance(c, (Individual, Identifier)) self.graph.add((self.identifier, RDF.type, classOrIdentifier(c))) @TermDeletionHelper(RDF.type) def _delete_type(self): """ >>> g = Graph() >>> b=Individual(OWL.Restriction,g) >>> b.type = RDF.Resource >>> len(list(b.type)) 1 >>> del b.type >>> len(list(b.type)) 0 """ pass type = property(_get_type, _set_type, _delete_type) def _get_identifier(self): return self.__identifier def _set_identifier(self, i): assert i if i != self.__identifier: oldStmtsOut = [ (p, o) for s, p, o in self.graph.triples((self.__identifier, None, None)) ] oldStmtsIn = [ (s, p) for s, p, o in self.graph.triples((None, None, self.__identifier)) ] for p1, o1 in oldStmtsOut: self.graph.remove((self.__identifier, p1, o1)) for s1, p1 in oldStmtsIn: self.graph.remove((s1, p1, self.__identifier)) self.__identifier = i self.graph.addN([(i, p1, o1, self.graph) for p1, o1 in oldStmtsOut]) self.graph.addN([(s1, p1, i, self.graph) for s1, p1 in oldStmtsIn]) if not isinstance(i, BNode): try: prefix, uri, localName = self.graph.compute_qname(i) self.qname = ":".join([prefix, localName]) except: pass identifier = property(_get_identifier, _set_identifier) def _get_sameAs(self): for _t in self.graph.objects(subject=self.identifier, predicate=OWL.sameAs): yield _t def _set_sameAs(self, term): # if not kind: # return if isinstance(term, (Individual, Identifier)): self.graph.add((self.identifier, OWL.sameAs, classOrIdentifier(term))) else: for c in term: assert isinstance(c, (Individual, Identifier)) self.graph.add((self.identifier, OWL.sameAs, classOrIdentifier(c))) @TermDeletionHelper(OWL.sameAs) def _delete_sameAs(self): pass sameAs = property(_get_sameAs, _set_sameAs, _delete_sameAs)
ACE_NS = Namespace("http://attempto.ifi.uzh.ch/ace_lexicon#")
[docs]class AnnotatableTerms(Individual): """ Terms in an OWL ontology with rdfs:label and rdfs:comment """
[docs] def __init__(self, identifier, graph=None, nameAnnotation=None, nameIsLabel=False): super(AnnotatableTerms, self).__init__(identifier, graph) if nameAnnotation: self.setupACEAnnotations() self.PN_sgProp.extent = [ (self.identifier, self.handleAnnotation(nameAnnotation)) ] if nameIsLabel: self.label = [nameAnnotation]
[docs] def handleAnnotation(self, val): return val if isinstance(val, Literal) else Literal(val)
[docs] def setupACEAnnotations(self): self.graph.bind("ace", ACE_NS, override=False) # PN_sg singular form of a proper name () self.PN_sgProp = Property( ACE_NS.PN_sg, baseType=OWL.AnnotationProperty, graph=self.graph ) # CN_sg singular form of a common noun self.CN_sgProp = Property( ACE_NS.CN_sg, baseType=OWL.AnnotationProperty, graph=self.graph ) # CN_pl plural form of a common noun self.CN_plProp = Property( ACE_NS.CN_pl, baseType=OWL.AnnotationProperty, graph=self.graph ) # singular form of a transitive verb self.TV_sgProp = Property( ACE_NS.TV_sg, baseType=OWL.AnnotationProperty, graph=self.graph ) # plural form of a transitive verb self.TV_plProp = Property( ACE_NS.TV_pl, baseType=OWL.AnnotationProperty, graph=self.graph ) # past participle form a transitive verb self.TV_vbgProp = Property( ACE_NS.TV_vbg, baseType=OWL.AnnotationProperty, graph=self.graph )
def _get_comment(self): for comment in self.graph.objects( subject=self.identifier, predicate=RDFS.comment ): yield comment def _set_comment(self, comment): if not comment: return if isinstance(comment, Identifier): self.graph.add((self.identifier, RDFS.comment, comment)) else: for c in comment: self.graph.add((self.identifier, RDFS.comment, c)) @TermDeletionHelper(RDFS.comment) def _del_comment(self): pass comment = property(_get_comment, _set_comment, _del_comment) def _get_seeAlso(self): for sA in self.graph.objects(subject=self.identifier, predicate=RDFS.seeAlso): yield sA def _set_seeAlso(self, seeAlsos): if not seeAlsos: return for s in seeAlsos: self.graph.add((self.identifier, RDFS.seeAlso, s)) @TermDeletionHelper(RDFS.seeAlso) def _del_seeAlso(self): pass seeAlso = property(_get_seeAlso, _set_seeAlso, _del_seeAlso) def _get_label(self): for label in self.graph.objects(subject=self.identifier, predicate=RDFS.label): yield label def _set_label(self, label): if not label: return if isinstance(label, Identifier): self.graph.add((self.identifier, RDFS.label, label)) else: for l_ in label: self.graph.add((self.identifier, RDFS.label, l_)) @TermDeletionHelper(RDFS.label) def _delete_label(self): """ >>> g=Graph() >>> b=Individual(OWL.Restriction,g) >>> b.label = Literal('boo') >>> len(list(b.label)) 1 >>> del b.label >>> len(list(b.label)) 0 """ pass label = property(_get_label, _set_label, _delete_label)
[docs]class Ontology(AnnotatableTerms): """The owl ontology metadata"""
[docs] def __init__(self, identifier=None, imports=None, comment=None, graph=None): super(Ontology, self).__init__(identifier, graph) self.imports = imports and imports or [] self.comment = comment and comment or [] if (self.identifier, RDF.type, OWL.Ontology) not in self.graph: self.graph.add((self.identifier, RDF.type, OWL.Ontology))
[docs] def setVersion(self, version): self.graph.set((self.identifier, OWL.versionInfo, version))
def _get_imports(self): for owl in self.graph.objects( subject=self.identifier, predicate=OWL["imports"] ): yield owl def _set_imports(self, other): if not other: return for o in other: self.graph.add((self.identifier, OWL["imports"], o)) @TermDeletionHelper(OWL["imports"]) def _del_imports(self): pass imports = property(_get_imports, _set_imports, _del_imports)
[docs]def AllClasses(graph): prevClasses = set() for c in graph.subjects(predicate=RDF.type, object=OWL.Class): if c not in prevClasses: prevClasses.add(c) yield Class(c)
[docs]def AllProperties(graph): prevProps = set() for s, p, o in graph.triples_choices( ( None, RDF.type, [ OWL.SymmetricProperty, OWL.FunctionalProperty, OWL.InverseFunctionalProperty, OWL.TransitiveProperty, OWL.DatatypeProperty, OWL.ObjectProperty, OWL.AnnotationProperty, ], ) ): if o in [ OWL.SymmetricProperty, OWL.InverseFunctionalProperty, OWL.TransitiveProperty, OWL.ObjectProperty, ]: bType = OWL.ObjectProperty else: bType = OWL.DatatypeProperty if s not in prevProps: prevProps.add(s) yield Property(s, graph=graph, baseType=bType)
[docs]class ClassNamespaceFactory(Namespace):
[docs] def term(self, name): return Class(URIRef(self + name))
[docs] def __getitem__(self, key, default=None): return self.term(key)
[docs] def __getattr__(self, name): if name.startswith("__"): # ignore any special Python names! raise AttributeError else: return self.term(name)
CLASS_RELATIONS = set( Namespace("http://www.w3.org/2002/07/owl#resourceProperties") ).difference( [ OWL.onProperty, OWL.allValuesFrom, OWL.hasValue, OWL.someValuesFrom, OWL.inverseOf, OWL.imports, OWL.versionInfo, OWL.backwardCompatibleWith, OWL.incompatibleWith, OWL.unionOf, OWL.intersectionOf, OWL.oneOf, ] )
[docs]def ComponentTerms(cls): """ Takes a Class instance and returns a generator over the classes that are involved in its definition, ignoring unnamed classes """ if OWL.Restriction in cls.type: try: cls = CastClass(cls, Individual.factoryGraph) for s, p, innerClsId in cls.factoryGraph.triples_choices( (cls.identifier, [OWL.allValuesFrom, OWL.someValuesFrom], None) ): innerCls = Class(innerClsId, skipOWLClassMembership=True) if isinstance(innerClsId, BNode): for _c in ComponentTerms(innerCls): yield _c else: yield innerCls except: pass else: cls = CastClass(cls, Individual.factoryGraph) if isinstance(cls, BooleanClass): for _cls in cls: _cls = Class(_cls, skipOWLClassMembership=True) if isinstance(_cls.identifier, BNode): for _c in ComponentTerms(_cls): yield _c else: yield _cls else: for innerCls in cls.subClassOf: if isinstance(innerCls.identifier, BNode): for _c in ComponentTerms(innerCls): yield _c else: yield innerCls for s, p, o in cls.factoryGraph.triples_choices( (classOrIdentifier(cls), CLASS_RELATIONS, None) ): if isinstance(o, BNode): for _c in ComponentTerms(CastClass(o, Individual.factoryGraph)): yield _c else: yield innerCls
[docs]def DeepClassClear(classToPrune): """ Recursively clear the given class, continuing where any related class is an anonymous class >>> EX = Namespace('http://example.com/') >>> namespace_manager = NamespaceManager(Graph()) >>> namespace_manager.bind('ex', EX, override=False) >>> namespace_manager.bind('owl', OWL, override=False) >>> g = Graph() >>> g.namespace_manager = namespace_manager >>> Individual.factoryGraph = g >>> classB = Class(EX.B) >>> classC = Class(EX.C) >>> classD = Class(EX.D) >>> classE = Class(EX.E) >>> classF = Class(EX.F) >>> anonClass = EX.someProp | some | classD #doctest: +SKIP >>> classF += anonClass #doctest: +SKIP >>> list(anonClass.subClassOf) #doctest: +SKIP [Class: ex:F ] >>> classA = classE | classF | anonClass #doctest: +SKIP >>> classB += classA #doctest: +SKIP >>> classA.equivalentClass = [Class()] #doctest: +SKIP >>> classB.subClassOf = [EX.someProp | some | classC] #doctest: +SKIP >>> classA #doctest: +SKIP ( ex:E OR ex:F OR ( ex:someProp SOME ex:D ) ) >>> DeepClassClear(classA) #doctest: +SKIP >>> classA #doctest: +SKIP ( ) >>> list(anonClass.subClassOf) #doctest: +SKIP [] >>> classB #doctest: +SKIP Class: ex:B SubClassOf: ( ex:someProp SOME ex:C ) >>> otherClass = classD | anonClass #doctest: +SKIP >>> otherClass #doctest: +SKIP ( ex:D OR ( ex:someProp SOME ex:D ) ) >>> DeepClassClear(otherClass) #doctest: +SKIP >>> otherClass #doctest: +SKIP ( ) >>> otherClass.delete() #doctest: +SKIP >>> list(g.triples((otherClass.identifier, None, None))) #doctest: +SKIP [] """ def deepClearIfBNode(_class): if isinstance(classOrIdentifier(_class), BNode): DeepClassClear(_class) classToPrune = CastClass(classToPrune, Individual.factoryGraph) for c in classToPrune.subClassOf: deepClearIfBNode(c) classToPrune.graph.remove((classToPrune.identifier, RDFS.subClassOf, None)) for c in classToPrune.equivalentClass: deepClearIfBNode(c) classToPrune.graph.remove((classToPrune.identifier, OWL.equivalentClass, None)) inverseClass = classToPrune.complementOf if inverseClass: classToPrune.graph.remove((classToPrune.identifier, OWL.complementOf, None)) deepClearIfBNode(inverseClass) if isinstance(classToPrune, BooleanClass): for c in classToPrune: deepClearIfBNode(c) classToPrune.clear() classToPrune.graph.remove( (classToPrune.identifier, classToPrune._operator, None) )
[docs]class MalformedClass(Exception):
[docs] def __init__(self, msg): self.msg = msg
[docs] def __repr__(self): return self.msg
[docs]def CastClass(c, graph=None): graph = graph is None and c.factoryGraph or graph for kind in graph.objects(subject=classOrIdentifier(c), predicate=RDF.type): if kind == OWL.Restriction: kwArgs = {"identifier": classOrIdentifier(c), "graph": graph} for s, p, o in graph.triples((classOrIdentifier(c), None, None)): if p != RDF.type: if p == OWL.onProperty: kwArgs["onProperty"] = o else: if p not in Restriction.restrictionKinds: continue kwArgs[str(p.split(str(OWL))[-1])] = o if not set( [str(i.split(str(OWL))[-1]) for i in Restriction.restrictionKinds] ).intersection(kwArgs): raise MalformedClass("Malformed owl:Restriction") return Restriction(**kwArgs) else: for s, p, o in graph.triples_choices( ( classOrIdentifier(c), [OWL.intersectionOf, OWL.unionOf, OWL.oneOf], None, ) ): if p == OWL.oneOf: return EnumeratedClass(classOrIdentifier(c), graph=graph) else: return BooleanClass(classOrIdentifier(c), operator=p, graph=graph) # assert (classOrIdentifier(c),RDF.type,OWL.Class) in graph return Class(classOrIdentifier(c), graph=graph, skipOWLClassMembership=True)
[docs]class Class(AnnotatableTerms): """ 'General form' for classes: The Manchester Syntax (supported in Protege) is used as the basis for the form of this class See: http://owl-workshop.man.ac.uk/acceptedLong/submission_9.pdf: [Annotation] ‘Class:’ classID {Annotation ( (‘SubClassOf:’ ClassExpression) | (‘EquivalentTo’ ClassExpression) | (’DisjointWith’ ClassExpression)) } Appropriate excerpts from OWL Reference: ".. Subclass axioms provide us with partial definitions: they represent necessary but not sufficient conditions for establishing class membership of an individual." ".. A class axiom may contain (multiple) owl:equivalentClass statements" "..A class axiom may also contain (multiple) owl:disjointWith statements.." "..An owl:complementOf property links a class to precisely one class description." """ def _serialize(self, graph): for cl in self.subClassOf: CastClass(cl, self.graph).serialize(graph) for cl in self.equivalentClass: CastClass(cl, self.graph).serialize(graph) for cl in self.disjointWith: CastClass(cl, self.graph).serialize(graph) if self.complementOf: CastClass(self.complementOf, self.graph).serialize(graph)
[docs] def serialize(self, graph): for fact in self.graph.triples((self.identifier, None, None)): graph.add(fact) self._serialize(graph)
[docs] def setupNounAnnotations(self, nounAnnotations): if isinstance(nounAnnotations, tuple): CN_sgProp, CN_plProp = nounAnnotations else: CN_sgProp = nounAnnotations CN_plProp = nounAnnotations if CN_sgProp: self.CN_sgProp.extent = [ (self.identifier, self.handleAnnotation(CN_sgProp)) ] if CN_plProp: self.CN_plProp.extent = [ (self.identifier, self.handleAnnotation(CN_plProp)) ]
[docs] def __init__( self, identifier=None, subClassOf=None, equivalentClass=None, disjointWith=None, complementOf=None, graph=None, skipOWLClassMembership=False, comment=None, nounAnnotations=None, nameAnnotation=None, nameIsLabel=False, ): super(Class, self).__init__(identifier, graph, nameAnnotation, nameIsLabel) if nounAnnotations: self.setupNounAnnotations(nounAnnotations) if ( not skipOWLClassMembership and (self.identifier, RDF.type, OWL.Class) not in self.graph and (self.identifier, RDF.type, OWL.Restriction) not in self.graph ): self.graph.add((self.identifier, RDF.type, OWL.Class)) self.subClassOf = subClassOf and subClassOf or [] self.equivalentClass = equivalentClass and equivalentClass or [] self.disjointWith = disjointWith and disjointWith or [] if complementOf: self.complementOf = complementOf self.comment = comment and comment or []
def _get_extent(self, graph=None): for member in (graph is None and self.graph or graph).subjects( predicate=RDF.type, object=self.identifier ): yield member def _set_extent(self, other): if not other: return for m in other: self.graph.add((classOrIdentifier(m), RDF.type, self.identifier)) @TermDeletionHelper(RDF.type) def _del_type(self): pass extent = property(_get_extent, _set_extent, _del_type) def _get_annotation(self, term=RDFS.label): for annotation in self.graph.objects(subject=self, predicate=term): yield annotation annotation = property(_get_annotation, lambda x: x) # type: ignore[arg-type,misc] def _get_extentQuery(self): return (Variable("CLASS"), RDF.type, self.identifier) def _set_extentQuery(self, other): pass extentQuery = property(_get_extentQuery, _set_extentQuery)
[docs] def __hash__(self): """ >>> b=Class(OWL.Restriction) >>> c=Class(OWL.Restriction) >>> len(set([b,c])) 1 """ return hash(self.identifier)
[docs] def __eq__(self, other): assert isinstance(other, Class), repr(other) return self.identifier == other.identifier
[docs] def __iadd__(self, other): assert isinstance(other, Class) other.subClassOf = [self] return self
[docs] def __isub__(self, other): assert isinstance(other, Class) self.graph.remove((classOrIdentifier(other), RDFS.subClassOf, self.identifier)) return self
[docs] def __invert__(self): """ Shorthand for Manchester syntax's not operator """ return Class(complementOf=self)
[docs] def __or__(self, other): """ Construct an anonymous class description consisting of the union of this class and 'other' and return it """ return BooleanClass( operator=OWL.unionOf, members=[self, other], graph=self.graph )
[docs] def __and__(self, other): """ Construct an anonymous class description consisting of the intersection of this class and 'other' and return it >>> exNs = Namespace('http://example.com/') >>> namespace_manager = NamespaceManager(Graph()) >>> namespace_manager.bind('ex', exNs, override=False) >>> namespace_manager.bind('owl', OWL, override=False) >>> g = Graph() >>> g.namespace_manager = namespace_manager Chaining 3 intersections >>> female = Class(exNs.Female, graph=g) >>> human = Class(exNs.Human, graph=g) >>> youngPerson = Class(exNs.YoungPerson, graph=g) >>> youngWoman = female & human & youngPerson >>> youngWoman #doctest: +SKIP ex:YoungPerson THAT ( ex:Female AND ex:Human ) >>> isinstance(youngWoman, BooleanClass) True >>> isinstance(youngWoman.identifier, BNode) True """ return BooleanClass( operator=OWL.intersectionOf, members=[self, other], graph=self.graph )
def _get_subClassOf(self): for anc in self.graph.objects( subject=self.identifier, predicate=RDFS.subClassOf ): yield Class(anc, graph=self.graph, skipOWLClassMembership=True) def _set_subClassOf(self, other): if not other: return for sc in other: self.graph.add((self.identifier, RDFS.subClassOf, classOrIdentifier(sc))) @TermDeletionHelper(RDFS.subClassOf) def _del_subClassOf(self): pass subClassOf = property(_get_subClassOf, _set_subClassOf, _del_subClassOf) def _get_equivalentClass(self): for ec in self.graph.objects( subject=self.identifier, predicate=OWL.equivalentClass ): yield Class(ec, graph=self.graph) def _set_equivalentClass(self, other): if not other: return for sc in other: self.graph.add( (self.identifier, OWL.equivalentClass, classOrIdentifier(sc)) ) @TermDeletionHelper(OWL.equivalentClass) def _del_equivalentClass(self): pass equivalentClass = property( _get_equivalentClass, _set_equivalentClass, _del_equivalentClass ) def _get_disjointWith(self): for dc in self.graph.objects( subject=self.identifier, predicate=OWL.disjointWith ): yield Class(dc, graph=self.graph) def _set_disjointWith(self, other): if not other: return for c in other: self.graph.add((self.identifier, OWL.disjointWith, classOrIdentifier(c))) @TermDeletionHelper(OWL.disjointWith) def _del_disjointWith(self): pass disjointWith = property(_get_disjointWith, _set_disjointWith, _del_disjointWith) def _get_complementOf(self): comp = list( self.graph.objects(subject=self.identifier, predicate=OWL.complementOf) ) if not comp: return None elif len(comp) == 1: return Class(comp[0], graph=self.graph) else: raise Exception(len(comp)) def _set_complementOf(self, other): if not other: return self.graph.add((self.identifier, OWL.complementOf, classOrIdentifier(other))) @TermDeletionHelper(OWL.complementOf) def _del_complementOf(self): pass complementOf = property(_get_complementOf, _set_complementOf, _del_complementOf) def _get_parents(self): """ computed attributes that returns a generator over taxonomic 'parents' by disjunction, conjunction, and subsumption >>> from rdflib.util import first >>> exNs = Namespace('http://example.com/') >>> namespace_manager = NamespaceManager(Graph()) >>> namespace_manager.bind('ex', exNs, override=False) >>> namespace_manager.bind('owl', OWL, override=False) >>> g = Graph() >>> g.namespace_manager = namespace_manager >>> Individual.factoryGraph = g >>> brother = Class(exNs.Brother) >>> sister = Class(exNs.Sister) >>> sibling = brother | sister >>> sibling.identifier = exNs.Sibling >>> sibling #doctest: +SKIP ( ex:Brother OR ex:Sister ) >>> first(brother.parents) #doctest: +SKIP Class: ex:Sibling EquivalentTo: ( ex:Brother OR ex:Sister ) >>> parent = Class(exNs.Parent) >>> male = Class(exNs.Male) >>> father = parent & male >>> father.identifier = exNs.Father >>> list(father.parents) #doctest: +SKIP [Class: ex:Parent , Class: ex:Male ] """ for parent in itertools.chain(self.subClassOf, self.equivalentClass): yield parent link = first(self.factoryGraph.subjects(RDF.first, self.identifier)) if link: listSiblings = list(self.factoryGraph.transitive_subjects(RDF.rest, link)) if listSiblings: collectionHead = listSiblings[-1] else: collectionHead = link for disjCls in self.factoryGraph.subjects(OWL.unionOf, collectionHead): if isinstance(disjCls, URIRef): yield Class(disjCls, skipOWLClassMembership=True) for rdfList in self.factoryGraph.objects(self.identifier, OWL.intersectionOf): for member in OWLRDFListProxy([rdfList], graph=self.factoryGraph): if isinstance(member, URIRef): yield Class(member, skipOWLClassMembership=True) parents = property(_get_parents)
[docs] def isPrimitive(self): if (self.identifier, RDF.type, OWL.Restriction) in self.graph: return False # sc = list(self.subClassOf) ec = list(self.equivalentClass) for boolClass, p, rdfList in self.graph.triples_choices( (self.identifier, [OWL.intersectionOf, OWL.unionOf], None) ): ec.append(manchesterSyntax(rdfList, self.graph, boolean=p)) for e in ec: return False if self.complementOf: return False return True
[docs] def subSumpteeIds(self): for s in self.graph.subjects(predicate=RDFS.subClassOf, object=self.identifier): yield s
# def __iter__(self): # for s in self.graph.subjects( # predicate=RDFS.subClassOf,object=self.identifier): # yield Class(s,skipOWLClassMembership=True)
[docs] def __repr__(self, full=False, normalization=True): """ Returns the Manchester Syntax equivalent for this class """ exprs = [] sc = list(self.subClassOf) ec = list(self.equivalentClass) for boolClass, p, rdfList in self.graph.triples_choices( (self.identifier, [OWL.intersectionOf, OWL.unionOf], None) ): ec.append(manchesterSyntax(rdfList, self.graph, boolean=p)) dc = list(self.disjointWith) c = self.complementOf if c: dc.append(c) klassKind = "" label = list(self.graph.objects(self.identifier, RDFS.label)) label = label and "(" + label[0] + ")" or "" if sc: if full: scJoin = "\n " else: scJoin = ", " necStatements = [ isinstance(s, Class) and isinstance(self.identifier, BNode) and repr(CastClass(s, self.graph)) or # repr(BooleanClass(classOrIdentifier(s), # operator=None, # graph=self.graph)) or manchesterSyntax(classOrIdentifier(s), self.graph) for s in sc ] if necStatements: klassKind = "Primitive Type %s" % label exprs.append( "SubClassOf: %s" % scJoin.join([str(n) for n in necStatements]) ) if full: exprs[-1] = "\n " + exprs[-1] if ec: nec_SuffStatements = [ isinstance(s, str) and s or manchesterSyntax(classOrIdentifier(s), self.graph) for s in ec ] if nec_SuffStatements: klassKind = "A Defined Class %s" % label exprs.append("EquivalentTo: %s" % ", ".join(nec_SuffStatements)) if full: exprs[-1] = "\n " + exprs[-1] if dc: exprs.append( "DisjointWith %s\n" % "\n ".join( [manchesterSyntax(classOrIdentifier(s), self.graph) for s in dc] ) ) if full: exprs[-1] = "\n " + exprs[-1] descr = list(self.graph.objects(self.identifier, RDFS.comment)) if full and normalization: klassDescr = ( klassKind and "\n ## %s ##" % klassKind + (descr and "\n %s" % descr[0] or "") + " . ".join(exprs) or " . ".join(exprs) ) else: klassDescr = ( full and (descr and "\n %s" % descr[0] or "") or "" + " . ".join(exprs) ) return ( isinstance(self.identifier, BNode) and "Some Class " or "Class: %s " % self.qname ) + klassDescr
[docs]class OWLRDFListProxy(object):
[docs] def __init__(self, rdfList, members=None, graph=None): if graph: self.graph = graph members = members and members or [] if rdfList: self._rdfList = Collection(self.graph, rdfList[0]) for member in members: if member not in self._rdfList: self._rdfList.append(classOrIdentifier(member)) else: self._rdfList = Collection( self.graph, BNode(), [classOrIdentifier(m) for m in members] ) self.graph.add((self.identifier, self._operator, self._rdfList.uri))
[docs] def __eq__(self, other): """ Equivalence of boolean class constructors is determined by equivalence of its members """ assert isinstance(other, Class), repr(other) + repr(type(other)) if isinstance(other, BooleanClass): length = len(self) if length != len(other): return False else: for idx in range(length): if self[idx] != other[idx]: return False return True else: return self.identifier == other.identifier
# Redirect python list accessors to the underlying Collection instance
[docs] def __len__(self): return len(self._rdfList)
[docs] def index(self, item): return self._rdfList.index(classOrIdentifier(item))
[docs] def __getitem__(self, key): return self._rdfList[key]
[docs] def __setitem__(self, key, value): self._rdfList[key] = classOrIdentifier(value)
[docs] def __delitem__(self, key): del self._rdfList[key]
[docs] def clear(self): self._rdfList.clear()
[docs] def __iter__(self): for item in self._rdfList: yield item
[docs] def __contains__(self, item): for i in self._rdfList: if i == classOrIdentifier(item): return 1 return 0
[docs] def append(self, item): self._rdfList.append(item)
[docs] def __iadd__(self, other): self._rdfList.append(classOrIdentifier(other)) return self
[docs]class EnumeratedClass(OWLRDFListProxy, Class): """ Class for owl:oneOf forms: OWL Abstract Syntax is used axiom ::= 'EnumeratedClass(' classID ['Deprecated'] { annotation } { individualID } ')' >>> exNs = Namespace('http://example.com/') >>> namespace_manager = NamespaceManager(Graph()) >>> namespace_manager.bind('ex', exNs, override=False) >>> namespace_manager.bind('owl', OWL, override=False) >>> g = Graph() >>> g.namespace_manager = namespace_manager >>> Individual.factoryGraph = g >>> ogbujiBros = EnumeratedClass(exNs.ogbujicBros, ... members=[exNs.chime, ... exNs.uche, ... exNs.ejike]) >>> ogbujiBros #doctest: +SKIP { ex:chime ex:uche ex:ejike } >>> col = Collection(g, first( ... g.objects(predicate=OWL.oneOf, subject=ogbujiBros.identifier))) >>> [g.qname(item) for item in col] [u'ex:chime', u'ex:uche', u'ex:ejike'] >>> print(g.serialize(format='n3')) #doctest: +SKIP @prefix ex: <http://example.com/> . @prefix owl: <http://www.w3.org/2002/07/owl#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . <BLANKLINE> ex:ogbujicBros a owl:Class; owl:oneOf ( ex:chime ex:uche ex:ejike ) . <BLANKLINE> <BLANKLINE> """ _operator = OWL.oneOf
[docs] def isPrimitive(self): return False
[docs] def __init__(self, identifier=None, members=None, graph=None): Class.__init__(self, identifier, graph=graph) members = members and members or [] rdfList = list(self.graph.objects(predicate=OWL.oneOf, subject=self.identifier)) OWLRDFListProxy.__init__(self, rdfList, members)
[docs] def __repr__(self): """ Returns the Manchester Syntax equivalent for this class """ return manchesterSyntax(self._rdfList.uri, self.graph, boolean=self._operator)
[docs] def serialize(self, graph): clonedList = Collection(graph, BNode()) for cl in self._rdfList: clonedList.append(cl) CastClass(cl, self.graph).serialize(graph) graph.add((self.identifier, self._operator, clonedList.uri)) for s, p, o in self.graph.triples((self.identifier, None, None)): if p != self._operator: graph.add((s, p, o)) self._serialize(graph)
BooleanPredicates = [OWL.intersectionOf, OWL.unionOf] class BooleanClassExtentHelper: """ >>> testGraph = Graph() >>> Individual.factoryGraph = testGraph >>> EX = Namespace("http://example.com/") >>> namespace_manager = NamespaceManager(Graph()) >>> namespace_manager.bind('ex', EX, override=False) >>> testGraph.namespace_manager = namespace_manager >>> fire = Class(EX.Fire) >>> water = Class(EX.Water) >>> testClass = BooleanClass(members=[fire, water]) >>> testClass2 = BooleanClass( ... operator=OWL.unionOf, members=[fire, water]) >>> for c in BooleanClass.getIntersections(): ... print(c) #doctest: +SKIP ( ex:Fire AND ex:Water ) >>> for c in BooleanClass.getUnions(): ... print(c) #doctest: +SKIP ( ex:Fire OR ex:Water ) """ def __init__(self, operator): self.operator = operator def __call__(self, f): def _getExtent(): for c in Individual.factoryGraph.subjects(self.operator): yield BooleanClass(c, operator=self.operator) return _getExtent
[docs]class Callable:
[docs] def __init__(self, anycallable): self.__call__ = anycallable
[docs]class BooleanClass(OWLRDFListProxy, Class): """ See: http://www.w3.org/TR/owl-ref/#Boolean owl:complementOf is an attribute of Class, however """
[docs] @BooleanClassExtentHelper(OWL.intersectionOf) @Callable def getIntersections(): # type: ignore[misc] pass
getIntersections = Callable(getIntersections)
[docs] @BooleanClassExtentHelper(OWL.unionOf) @Callable def getUnions(): # type: ignore[misc] pass
getUnions = Callable(getUnions)
[docs] def __init__( self, identifier=None, operator=OWL.intersectionOf, members=None, graph=None ): if operator is None: props = [] for s, p, o in graph.triples_choices( (identifier, [OWL.intersectionOf, OWL.unionOf], None) ): props.append(p) operator = p assert len(props) == 1, repr(props) Class.__init__(self, identifier, graph=graph) assert operator in [OWL.intersectionOf, OWL.unionOf], str(operator) self._operator = operator rdfList = list(self.graph.objects(predicate=operator, subject=self.identifier)) assert ( not members or not rdfList ), "This is a previous boolean class description!" + repr( Collection(self.graph, rdfList[0]).n3() ) OWLRDFListProxy.__init__(self, rdfList, members)
[docs] def copy(self): """ Create a copy of this class """ copyOfClass = BooleanClass( operator=self._operator, members=list(self), graph=self.graph ) return copyOfClass
[docs] def serialize(self, graph): clonedList = Collection(graph, BNode()) for cl in self._rdfList: clonedList.append(cl) CastClass(cl, self.graph).serialize(graph) graph.add((self.identifier, self._operator, clonedList.uri)) for s, p, o in self.graph.triples((self.identifier, None, None)): if p != self._operator: graph.add((s, p, o)) self._serialize(graph)
[docs] def isPrimitive(self): return False
[docs] def changeOperator(self, newOperator): """ Converts a unionOf / intersectionOf class expression into one that instead uses the given operator >>> testGraph = Graph() >>> Individual.factoryGraph = testGraph >>> EX = Namespace("http://example.com/") >>> namespace_manager = NamespaceManager(Graph()) >>> namespace_manager.bind('ex', EX, override=False) >>> testGraph.namespace_manager = namespace_manager >>> fire = Class(EX.Fire) >>> water = Class(EX.Water) >>> testClass = BooleanClass(members=[fire,water]) >>> testClass #doctest: +SKIP ( ex:Fire AND ex:Water ) >>> testClass.changeOperator(OWL.unionOf) >>> testClass #doctest: +SKIP ( ex:Fire OR ex:Water ) >>> try: testClass.changeOperator(OWL.unionOf) ... except Exception as e: print(e) The new operator is already being used! """ assert newOperator != self._operator, "The new operator is already being used!" self.graph.remove((self.identifier, self._operator, self._rdfList.uri)) self.graph.add((self.identifier, newOperator, self._rdfList.uri)) self._operator = newOperator
[docs] def __repr__(self): """ Returns the Manchester Syntax equivalent for this class """ return manchesterSyntax(self._rdfList.uri, self.graph, boolean=self._operator)
[docs] def __or__(self, other): """ Adds other to the list and returns self """ assert self._operator == OWL.unionOf self._rdfList.append(classOrIdentifier(other)) return self
[docs]def AllDifferent(members): """ DisjointClasses(' description description { description } ')' """ pass
[docs]class Restriction(Class): """ restriction ::= 'restriction(' datavaluedPropertyID dataRestrictionComponent { dataRestrictionComponent } ')' | 'restriction(' individualvaluedPropertyID individualRestrictionComponent { individualRestrictionComponent } ')' """ restrictionKinds = [ OWL.allValuesFrom, OWL.someValuesFrom, OWL.hasValue, OWL.maxCardinality, OWL.minCardinality, ]
[docs] def __init__( self, onProperty, graph=Graph(), allValuesFrom=None, someValuesFrom=None, value=None, cardinality=None, maxCardinality=None, minCardinality=None, identifier=None, ): super(Restriction, self).__init__( identifier, graph=graph, skipOWLClassMembership=True ) if ( self.identifier, OWL.onProperty, propertyOrIdentifier(onProperty), ) not in graph: graph.add( (self.identifier, OWL.onProperty, propertyOrIdentifier(onProperty)) ) self.onProperty = onProperty restrTypes = [ (allValuesFrom, OWL.allValuesFrom), (someValuesFrom, OWL.someValuesFrom), (value, OWL.hasValue), (cardinality, OWL.cardinality), (maxCardinality, OWL.maxCardinality), (minCardinality, OWL.minCardinality), ] validRestrProps = [(i, oTerm) for (i, oTerm) in restrTypes if i] assert len(validRestrProps) restrictionRange, restrictionType = validRestrProps.pop() self.restrictionType = restrictionType if isinstance(restrictionRange, Identifier): self.restrictionRange = restrictionRange elif isinstance(restrictionRange, Class): self.restrictionRange = classOrIdentifier(restrictionRange) else: self.restrictionRange = first( self.graph.objects(self.identifier, restrictionType) ) if (self.identifier, restrictionType, self.restrictionRange) not in self.graph: self.graph.add((self.identifier, restrictionType, self.restrictionRange)) assert self.restrictionRange is not None, Class(self.identifier) if (self.identifier, RDF.type, OWL.Restriction) not in self.graph: self.graph.add((self.identifier, RDF.type, OWL.Restriction)) self.graph.remove((self.identifier, RDF.type, OWL.Class))
[docs] def serialize(self, graph): """ >>> g1 = Graph() >>> g2 = Graph() >>> EX = Namespace("http://example.com/") >>> namespace_manager = NamespaceManager(g1) >>> namespace_manager.bind('ex', EX, override=False) >>> namespace_manager = NamespaceManager(g2) >>> namespace_manager.bind('ex', EX, override=False) >>> Individual.factoryGraph = g1 >>> prop = Property(EX.someProp, baseType=OWL.DatatypeProperty) >>> restr1 = (Property( ... EX.someProp, ... baseType=OWL.DatatypeProperty)) | some | (Class(EX.Foo)) >>> restr1 #doctest: +SKIP ( ex:someProp SOME ex:Foo ) >>> restr1.serialize(g2) >>> Individual.factoryGraph = g2 >>> list(Property( ... EX.someProp,baseType=None).type ... ) #doctest: +NORMALIZE_WHITESPACE +SKIP [rdflib.term.URIRef( u'http://www.w3.org/2002/07/owl#DatatypeProperty')] """ Property(self.onProperty, graph=self.graph, baseType=None).serialize(graph) for s, p, o in self.graph.triples((self.identifier, None, None)): graph.add((s, p, o)) if p in [OWL.allValuesFrom, OWL.someValuesFrom]: CastClass(o, self.graph).serialize(graph)
[docs] def isPrimitive(self): return False
[docs] def __hash__(self): return hash((self.onProperty, self.restrictionRange))
[docs] def __eq__(self, other): """ Equivalence of restrictions is determined by equivalence of the property in question and the restriction 'range' """ assert isinstance(other, Class), repr(other) + repr(type(other)) if isinstance(other, Restriction): return ( other.onProperty == self.onProperty and other.restrictionRange == self.restrictionRange ) else: return False
def _get_onProperty(self): return list( self.graph.objects(subject=self.identifier, predicate=OWL.onProperty) )[0] def _set_onProperty(self, prop): triple = (self.identifier, OWL.onProperty, propertyOrIdentifier(prop)) if not prop: return elif triple in self.graph: return else: self.graph.set(triple) @TermDeletionHelper(OWL.onProperty) def _del_onProperty(self): pass onProperty = property(_get_onProperty, _set_onProperty, _del_onProperty) def _get_allValuesFrom(self): for i in self.graph.objects( subject=self.identifier, predicate=OWL.allValuesFrom ): return Class(i, graph=self.graph) return None def _set_allValuesFrom(self, other): triple = (self.identifier, OWL.allValuesFrom, classOrIdentifier(other)) if not other: return elif triple in self.graph: return else: self.graph.set(triple) @TermDeletionHelper(OWL.allValuesFrom) def _del_allValuesFrom(self): pass allValuesFrom = property(_get_allValuesFrom, _set_allValuesFrom, _del_allValuesFrom) def _get_someValuesFrom(self): for i in self.graph.objects( subject=self.identifier, predicate=OWL.someValuesFrom ): return Class(i, graph=self.graph) return None def _set_someValuesFrom(self, other): triple = (self.identifier, OWL.someValuesFrom, classOrIdentifier(other)) if not other: return elif triple in self.graph: return else: self.graph.set(triple) @TermDeletionHelper(OWL.someValuesFrom) def _del_someValuesFrom(self): pass someValuesFrom = property( _get_someValuesFrom, _set_someValuesFrom, _del_someValuesFrom ) def _get_hasValue(self): for i in self.graph.objects(subject=self.identifier, predicate=OWL.hasValue): return Class(i, graph=self.graph) return None def _set_hasValue(self, other): triple = (self.identifier, OWL.hasValue, classOrIdentifier(other)) if not other: return elif triple in self.graph: return else: self.graph.set(triple) @TermDeletionHelper(OWL.hasValue) def _del_hasValue(self): pass hasValue = property(_get_hasValue, _set_hasValue, _del_hasValue) def _get_cardinality(self): for i in self.graph.objects(subject=self.identifier, predicate=OWL.cardinality): return Class(i, graph=self.graph) return None def _set_cardinality(self, other): triple = (self.identifier, OWL.cardinality, classOrIdentifier(other)) if not other: return elif triple in self.graph: return else: self.graph.set(triple) @TermDeletionHelper(OWL.cardinality) def _del_cardinality(self): pass cardinality = property(_get_cardinality, _set_cardinality, _del_cardinality) def _get_maxCardinality(self): for i in self.graph.objects( subject=self.identifier, predicate=OWL.maxCardinality ): return Class(i, graph=self.graph) return None def _set_maxCardinality(self, other): triple = (self.identifier, OWL.maxCardinality, classOrIdentifier(other)) if not other: return elif triple in self.graph: return else: self.graph.set(triple) @TermDeletionHelper(OWL.maxCardinality) def _del_maxCardinality(self): pass maxCardinality = property( _get_maxCardinality, _set_maxCardinality, _del_maxCardinality ) def _get_minCardinality(self): for i in self.graph.objects( subject=self.identifier, predicate=OWL.minCardinality ): return Class(i, graph=self.graph) return None def _set_minCardinality(self, other): triple = (self.identifier, OWL.minCardinality, classOrIdentifier(other)) if not other: return elif triple in self.graph: return else: self.graph.set(triple) @TermDeletionHelper(OWL.minCardinality) def _del_minCardinality(self): pass minCardinality = property( _get_minCardinality, _set_minCardinality, _del_minCardinality )
[docs] def restrictionKind(self): for p in self.graph.triple_choices( (self.identifier, self.restrictionKinds, None) ): return p.split(OWL)[-1] raise
[docs] def __repr__(self): """ Returns the Manchester Syntax equivalent for this restriction """ return manchesterSyntax(self.identifier, self.graph)
# Infix Operators # some = Infix( lambda prop, _class: Restriction(prop, graph=_class.graph, someValuesFrom=_class) ) only = Infix( lambda prop, _class: Restriction(prop, graph=_class.graph, allValuesFrom=_class) ) max = Infix( lambda prop, _class: Restriction(prop, graph=prop.graph, maxCardinality=_class) ) min = Infix( lambda prop, _class: Restriction(prop, graph=prop.graph, minCardinality=_class) ) exactly = Infix( lambda prop, _class: Restriction(prop, graph=prop.graph, cardinality=_class) ) value = Infix(lambda prop, _class: Restriction(prop, graph=prop.graph, value=_class)) PropertyAbstractSyntax = """ %s( %s { %s } %s { 'super(' datavaluedPropertyID ')'} ['Functional'] { domain( %s ) } { range( %s ) } )"""
[docs]class Property(AnnotatableTerms): """ axiom ::= 'DatatypeProperty(' datavaluedPropertyID ['Deprecated'] { annotation } { 'super(' datavaluedPropertyID ')'} ['Functional'] { 'domain(' description ')' } { 'range(' dataRange ')' } ')' | 'ObjectProperty(' individualvaluedPropertyID ['Deprecated'] { annotation } { 'super(' individualvaluedPropertyID ')' } [ 'inverseOf(' individualvaluedPropertyID ')' ] [ 'Symmetric' ] [ 'Functional' | 'InverseFunctional' | 'Functional' 'InverseFunctional' | 'Transitive' ] { 'domain(' description ')' } { 'range(' description ')' } ') """
[docs] def setupVerbAnnotations(self, verbAnnotations): if isinstance(verbAnnotations, tuple): TV_sgProp, TV_plProp, TV_vbg = verbAnnotations else: TV_sgProp = verbAnnotations TV_plProp = verbAnnotations TV_vbg = verbAnnotations if TV_sgProp: self.TV_sgProp.extent = [ (self.identifier, self.handleAnnotation(TV_sgProp)) ] if TV_plProp: self.TV_plProp.extent = [ (self.identifier, self.handleAnnotation(TV_plProp)) ] if TV_vbg: self.TV_vbgProp.extent = [(self.identifier, self.handleAnnotation(TV_vbg))]
[docs] def __init__( self, identifier=None, graph=None, baseType=OWL.ObjectProperty, subPropertyOf=None, domain=None, range=None, inverseOf=None, otherType=None, equivalentProperty=None, comment=None, verbAnnotations=None, nameAnnotation=None, nameIsLabel=False, ): super(Property, self).__init__(identifier, graph, nameAnnotation, nameIsLabel) if verbAnnotations: self.setupVerbAnnotations(verbAnnotations) assert not isinstance(self.identifier, BNode) if baseType is None: # None give, determine via introspection self._baseType = first(Individual(self.identifier, graph=self.graph).type) else: if (self.identifier, RDF.type, baseType) not in self.graph: self.graph.add((self.identifier, RDF.type, baseType)) self._baseType = baseType self.subPropertyOf = subPropertyOf self.inverseOf = inverseOf self.domain = domain self.range = range self.comment = comment and comment or []
[docs] def serialize(self, graph): for fact in self.graph.triples((self.identifier, None, None)): graph.add(fact) for p in itertools.chain(self.subPropertyOf, self.inverseOf): p.serialize(graph) for c in itertools.chain(self.domain, self.range): CastClass(c, self.graph).serialize(graph)
def _get_extent(self, graph=None): for triple in (graph is None and self.graph or graph).triples( (None, self.identifier, None) ): yield triple def _set_extent(self, other): if not other: return for subj, obj in other: self.graph.add((subj, self.identifier, obj)) extent = property(_get_extent, _set_extent)
[docs] def __repr__(self): rt = [] if OWL.ObjectProperty in self.type: rt.append( "ObjectProperty( %s annotation(%s)" % (self.qname, first(self.comment) and first(self.comment) or "") ) if first(self.inverseOf): twoLinkInverse = first(first(self.inverseOf).inverseOf) if twoLinkInverse and twoLinkInverse.identifier == self.identifier: inverseRepr = first(self.inverseOf).qname else: inverseRepr = repr(first(self.inverseOf)) rt.append( " inverseOf( %s )%s" % ( inverseRepr, OWL.SymmetricProperty in self.type and " Symmetric" or "", ) ) for s, p, roleType in self.graph.triples_choices( ( self.identifier, RDF.type, [ OWL.FunctionalProperty, OWL.InverseFunctionalProperty, OWL.TransitiveProperty, ], ) ): rt.append(str(roleType.split(OWL)[-1])) else: rt.append( "DatatypeProperty( %s %s" % (self.qname, first(self.comment) and first(self.comment) or "") ) for s, p, roleType in self.graph.triples( (self.identifier, RDF.type, OWL.FunctionalProperty) ): rt.append(" Functional") def canonicalName(term, g): normalizedName = classOrIdentifier(term) if isinstance(normalizedName, BNode): return term elif normalizedName.startswith(XSD): return str(term) elif first( g.triples_choices( (normalizedName, [OWL.unionOf, OWL.intersectionOf], None) ) ): return repr(term) else: return str(term.qname) rt.append( " ".join( [ " super( %s )" % canonicalName(superP, self.graph) for superP in self.subPropertyOf ] ) ) rt.append( " ".join( [ " domain( %s )" % canonicalName(domain, self.graph) for domain in self.domain ] ) ) rt.append( " ".join( [ " range( %s )" % canonicalName(range, self.graph) for range in self.range ] ) ) rt = "\n".join([expr for expr in rt if expr]) rt += "\n)" return str(rt).encode("utf-8")
def _get_subPropertyOf(self): for anc in self.graph.objects( subject=self.identifier, predicate=RDFS.subPropertyOf ): yield Property(anc, graph=self.graph, baseType=None) def _set_subPropertyOf(self, other): if not other: return for sP in other: self.graph.add((self.identifier, RDFS.subPropertyOf, classOrIdentifier(sP))) @TermDeletionHelper(RDFS.subPropertyOf) def _del_subPropertyOf(self): pass subPropertyOf = property(_get_subPropertyOf, _set_subPropertyOf, _del_subPropertyOf) def _get_inverseOf(self): for anc in self.graph.objects(subject=self.identifier, predicate=OWL.inverseOf): yield Property(anc, graph=self.graph, baseType=None) def _set_inverseOf(self, other): if not other: return self.graph.add((self.identifier, OWL.inverseOf, classOrIdentifier(other))) @TermDeletionHelper(OWL.inverseOf) def _del_inverseOf(self): pass inverseOf = property(_get_inverseOf, _set_inverseOf, _del_inverseOf) def _get_domain(self): for dom in self.graph.objects(subject=self.identifier, predicate=RDFS.domain): yield Class(dom, graph=self.graph) def _set_domain(self, other): if not other: return if isinstance(other, (Individual, Identifier)): self.graph.add((self.identifier, RDFS.domain, classOrIdentifier(other))) else: for dom in other: self.graph.add((self.identifier, RDFS.domain, classOrIdentifier(dom))) @TermDeletionHelper(RDFS.domain) def _del_domain(self): pass domain = property(_get_domain, _set_domain, _del_domain) def _get_range(self): for ran in self.graph.objects(subject=self.identifier, predicate=RDFS.range): yield Class(ran, graph=self.graph) def _set_range(self, ranges): if not ranges: return if isinstance(ranges, (Individual, Identifier)): self.graph.add((self.identifier, RDFS.range, classOrIdentifier(ranges))) else: for range in ranges: self.graph.add((self.identifier, RDFS.range, classOrIdentifier(range))) @TermDeletionHelper(RDFS.range) def _del_range(self): pass range = property(_get_range, _set_range, _del_range)
[docs] def replace(self, other): # extension = [] for s, p, o in self.extent: self.graph.add((s, propertyOrIdentifier(other), o)) self.graph.remove((None, self.identifier, None))
[docs]def CommonNSBindings(graph, additionalNS={}): """ Takes a graph and binds the common namespaces (rdf,rdfs, & owl) """ namespace_manager = NamespaceManager(graph) namespace_manager.bind("rdfs", RDFS) namespace_manager.bind("rdf", RDF) namespace_manager.bind("owl", OWL) for prefix, uri in list(additionalNS.items()): namespace_manager.bind(prefix, uri, override=False) graph.namespace_manager = namespace_manager
def test(): import doctest doctest.testmod() if __name__ == "__main__": test()