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owl2_export_rdf.pl
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/* -*- Mode: Prolog -*- */
% **********************************************************************
% OWL to RDF Generator
% Author: Vangelis Vassiliadis
% Change Log:
% Feb 09: Ported to Thea2 [CJM]
% Mar 07: Version 0.5.5: Changes to the use_module and
% definitions for Thea 0.5.5 release.
% Sep 05: Initial release 0.4 (as part of Thea OWL
% Prolog library)
%
% **********************************************************************
:- module(owl2_export_rdf,
[owl_generate_rdf/2, % FileName, RDF_Load_Mode (complete/not)
owl_generate_rdf/3, % Ontology,FileName, RDF_Load_Mode (complete/not)
owl_generate_rdf/4, % Ontology,FileName, RDF_Load_Mode (complete/not), Opts
owl_synchronize_to_rdf/0,
owl_synchronize_to_rdf/1,
owl_rdf2n3/0
]).
:- use_module(owl2_model).
:- use_module(owl2_from_rdf).
:- use_module(swrl_rdf_hooks).
:- use_module(library('semweb/rdf_db')).
:- multifile owl2_io:save_axioms_hook/3.
owl2_io:save_axioms_hook(File,ttl,Opts) :-
ensure_loaded(library('semweb/rdf_turtle_write')),
owl2_io:save_axioms_hook(File,owl,[rdf_syntax(ttl)|Opts]).
owl2_io:save_axioms_hook(File,owl,Opts) :-
( member(rdf_load_mode(RDF_Load_Mode),Opts)
-> true
; RDF_Load_Mode=complete),
( var(File)
-> tmp_file(owl,File),
IsTemp=true
; IsTemp=false),
% ontology merging:
% user can select this to indicate that
% all axioms should be treated as belonging to the
% same ontology.
%
% bind Merge only if user selects this option
( member(merge(Merge),Opts)
-> true
; true),
% select which ontology is to be saved. If none is selected,
% choose this automatically, but only if there is only one
% ontology in memory
( member(ontology(O),Opts)
-> true
; setof(O,ontology(O),[O])
-> debug(owl_generate_rdf,'auto-selecting ontology: ~w',[O])
; true),
% if the user did not select an ontology, and there is not
% exactly 1 ontology in memory, then they are implicitly choosing
% to ignore ontologyAxiom/2 and save all axioms in one file.
( ( var(O)
; \+ ontologyAxiom(_,_))
-> ( nonvar(Merge),Merge=false
-> throw(error('cannot override merge(true) unless there is a single ontology'))
; Merge=true,
debug(owl_generate_rdf,'ignoring source of axiom, bundling all together',[]))
; true),
% add Merge to Opts
( var(Merge)
-> Opts2=Opts
; Opts2=[merge(Merge)|Opts]),
owl_generate_rdf(O,File,RDF_Load_Mode,Opts2),
% hack to allow 'saving' to standard output
( IsTemp
-> sformat(Cmd,'cat ~w',[File]),
shell(Cmd)
; true).
%owl2_from_rdf:owl_repository('http://www.w3.org/TR/2003/PR-owl-guide-20031209/food','testfiles/food.owl').
%% owl_generate_rdf(+FileName,+RDF_Load_Mode) is det
% see owl_generate_rdf/1 - derives ontology using ontology/1
owl_generate_rdf(FileName,RDF_Load_Mode) :-
setof(Ontology,ontology(Ontology),[Ontology]),
!,
owl_generate_rdf(Ontology,FileName,RDF_Load_Mode).
owl_generate_rdf(FileName,RDF_Load_Mode) :-
% leave Ontology variable unbound - this will save all ontologies together
owl_generate_rdf(_,FileName,RDF_Load_Mode).
%% owl_generate_rdf(+Ontology,+FileName,+RDF_Load_Mode) is det
%
% as owl_generate_rdf/4, default Opts
owl_generate_rdf(Ontology,FileName,RDF_Load_Mode) :-
owl_generate_rdf(Ontology,FileName,RDF_Load_Mode,[]).
%% owl_generate_rdf(+Ontology,+FileName,+RDF_Load_Mode,+Opts:list) is det
%
% writes in-memory ontology from owl2_model to an RDF-OWL file.
% You can also use save_axioms/2 with Format='owl'.
% With save_axioms/3 use rdf_load_mode(RDF_Load_Mode) as
% an option.
%
% @param Ontology - IRI
% @param FileName - path to save
% @param RDF_Load_Mode (complete/not)
owl_generate_rdf(Ontology,FileName,RDF_Load_Mode,Opts) :-
owl_generate_rdf_in_memory(Ontology,RDF_Load_Mode,Opts),
( member(rdf_syntax(ttl),Opts) % TODO - use rdf_db hooks
-> rdf_save_turtle(FileName,Opts)
; rdf_db:rdf_save(FileName)).
owl_generate_rdf_in_memory(Ontology,RDF_Load_Mode,Opts) :-
( RDF_Load_Mode=complete -> rdf_retractall(_,_,_); true),
retractall(blanknode_gen(_,_)),retractall(blanknode(_,_,_)),
% export a fake ontology directive if none specified
( var(Ontology)
-> owl2_export_axiom(ontology('http://example.org'),_)
; owl2_export_axiom(ontology(Ontology),_)),
( member(merge(true),Opts)
-> true
; SrcOntology=Ontology),
debug(owl_generate_rdf,'exporting Ont:~w',[Ontology]),
debug(owl_generate_rdf,' gen: ontologyAxiom/2',[]),
forall(ontologyAxiom(SrcOntology,Axiom),
(owl2_export_axiom(Axiom,main_triple(S,P,O)),
owl2_export_annotation(Axiom,'owl:Axiom',S,P,O))),
debug(owl_generate_rdf,' stray axioms',[]),
% TODO - better way of doing this - stray axioms
( var(Ontology)
-> forall((axiom(Axiom),\+ontologyAxiom(_,Axiom)),
( owl2_export_axiom(Axiom,main_triple(S,P,O)),
owl2_export_annotation(Axiom,'owl:Axiom',S,P,O)))
; true),
% TODO - make SWRL export a hook?
forall(axiom(implies(A,C)),
owl2_export_axiom(implies(A,C),_)).
%% owl_synchronize_to_rdf is det
%% owl_synchronize_to_rdf(Ont) is det
%
% translates existing owl2_model.pl database into current rdf_db
owl_synchronize_to_rdf :-
setof(Ont,ontology(Ont),Onts),
!,
maplist(owl_synchronize_to_rdf,Onts).
owl_synchronize_to_rdf :-
owl_generate_rdf_in_memory(_,false,[]).
owl_synchronize_to_rdf(Ont) :-
!,
debug(owl_sync,'Synchronizing: ~w',[Ont]),
% this is not very efficient!
% see email http://groups.google.com/group/thea-owl-lib/browse_thread/thread/d9fcc8cc28a2d347
% TODO: refactor code such that rdf can be asserted in other graphs during export
owl_generate_rdf_in_memory(Ont,false,[]),
debug(owl_sync,'Copying from user to ~w',[Ont]),
rdf_transaction(forall(rdf(S,P,O,user),
rdf_assert(S,P,O,Ont))),
debug(owl_sync,' Clearing user',[]),
rdf_retractall(_,_,_,user).
/*
owl_rdf2n3
Prints out the RDF triples in N3 notation.
*/
owl_rdf2n3 :-
rdf_db:rdf(S,P,O),
collapse_ns(S,S1,':',[]),collapse_ns(P,P1,':',[]),collapse_ns(O,O1,':',[]),
write(S1), write(' '), write(P1), write(' '), write(O1), write(' .'),nl,
fail.
%% owl2_export_axiom(+Axiom, ?Triple) is semidet
/*
owl2_export_axiom(X,main_triple(Node,_,_)) :-
blanknode_gen(Node,X),!.
*/
owl2_export_axiom(ontology(O),main_triple(O,'rdf:type','owl:Ontology')) :-
owl_rdf_assert(O,'rdf:type','owl:Ontology'),
forall(ontologyImport(O,Import),owl_rdf_assert(O,'owl:imports',Import)),!.
owl2_export_axiom(class(C1),main_triple(C,'rdf:type','owl:Class')) :-
translate_iri(C1,C),
owl_rdf_assert(C,'rdf:type','owl:Class'),!.
owl2_export_axiom(objectProperty(C1),main_triple(C,'rdf:type','owl:ObjectProperty')) :-
translate_iri(C1,C),
owl_rdf_assert(C,'rdf:type','owl:ObjectProperty'),!.
owl2_export_axiom(dataProperty(C1),main_triple(C,'rdf:type','owl:DatatypeProperty')) :-
translate_iri(C1,C),
owl_rdf_assert(C,'rdf:type','owl:DatatypeProperty'),!.
owl2_export_axiom(annotationProperty(C1),main_triple(C,'rdf:type','owl:AnnotationProperty')) :-
translate_iri(C1,C),
owl_rdf_assert(C,'rdf:type','owl:AnnotationProperty'),!.
owl2_export_axiom(namedIndividual(C1),main_triple(C,'rdf:type','owl:NamedIndividual')) :-
translate_iri(C1,C),
owl_rdf_assert(C,'rdf:type','owl:NamedIndividual'),!.
owl2_export_axiom(subClassOf(C1,C2),main_triple(TC1,'rdfs:subClassOf',TC2)) :-
owl2_export_axiom(C1,main_triple(TC1,_,_)),
owl2_export_axiom(C2,main_triple(TC2,_,_)),
owl_rdf_assert(TC1,'rdfs:subClassOf',TC2),!.
owl2_export_axiom(equivalentClasses([X,Y]),main_triple(Tx,'owl:equivalentClass',Ty)) :-
owl2_export_axiom(X,main_triple(Tx,_,_)),
owl2_export_axiom(Y,main_triple(Ty,_,_)),!,
owl_rdf_assert(Tx,'owl:equivalentClass',Ty).
owl2_export_axiom(disjointClasses([X,Y]),main_triple(Tx,'owl:disjointWith',Ty)) :-
owl2_export_axiom(X,main_triple(Tx,_,_)),
owl2_export_axiom(Y,main_triple(Ty,_,_)),!,
owl_rdf_assert(Tx,'owl:disjointWith',Ty).
owl2_export_axiom(disjointClasses(List),main_triple(BNode,'rdf:type','owl:AlldisjointClasses')) :-
as2rdf_bnode(disjointClasses(List),BNode),
owl2_export_list(List,LNode),
owl_rdf_assert(BNode,'rdf:type','owl:AlldisjointClasses'),
owl_rdf_assert(BNode,'owl:members',LNode),!.
owl2_export_axiom(disjointUnion(C,Rest),main_triple(Tc,'owl:disjointUnionOf',LNode)) :-
owl2_export_axiom(C,main_triple(Tc,_,_)),
owl2_export_list(Rest,LNode),
owl_rdf_assert(Tc,'owl:disjointUnionOf',LNode),!.
owl2_export_axiom(subPropertyOf(propertyChain(PL),P2),main_triple(Tp2,'owl:propertyChainAxiom',LNode)) :-
owl2_export_axiom(P2,main_triple(Tp2,_,_)),
owl2_export_list(PL,LNode),
owl_rdf_assert(Tp2,'owl:propertyChainAxiom',LNode),!.
owl2_export_axiom(subPropertyOf(P1,P2),main_triple(Tp1,'rdfs:subPropertyOf',Tp2)) :-
owl2_export_axiom(P1,main_triple(Tp1,_,_)),
owl2_export_axiom(P2,main_triple(Tp2,_,_)),
owl_rdf_assert(Tp1,'rdfs:subPropertyOf',Tp2),!.
owl2_export_axiom(equivalentProperties([X,Y]),main_triple(Tx,'owl:equivalentProperty',Ty)) :-
owl2_export_axiom(X,main_triple(Tx,_,_)),
owl2_export_axiom(Y,main_triple(Ty,_,_)),
owl_rdf_assert(Tx,'owl:equivalentProperty',Ty),!.
% TODO: >2 equivalent Properties
owl2_export_axiom(disjointProperties([X,Y]),main_triple(Tx,'owl:propertyDisjointWith',Ty)) :-
owl2_export_axiom(X,main_triple(Tx,_,_)),
owl2_export_axiom(Y,main_triple(Ty,_,_)),
owl_rdf_assert(Tx,'owl:propertyDisjointWith',Ty),!.
owl2_export_axiom(disjointProperties(List),main_triple(BNode,'rdf:type','owl:AlldisjointProperties')) :-
as2rdf_bnode(disjointClasses(List),BNode),
owl2_export_list(List,LNode),
owl_rdf_assert(BNode,'rdf:type','owl:AlldisjointProperties'),
owl_rdf_assert(BNode,'owl:members',LNode),!.
owl2_export_axiom(propertyDomain(PE,CE),main_triple(Tpe,'rdfs:domain',Tce)) :-
owl2_export_axiom(PE,main_triple(Tpe,_,_)),
owl2_export_axiom(CE,main_triple(Tce,_,_)),
owl_rdf_assert(Tpe,'rdfs:domain',Tce),!.
owl2_export_axiom(propertyRange(PE,CE),main_triple(Tpe,'rdfs:range',Tce)) :-
owl2_export_axiom(PE,main_triple(Tpe,_,_)),
owl2_export_axiom(CE,main_triple(Tce,_,_)),
owl_rdf_assert(Tpe,'rdfs:range',Tce),!.
owl2_export_axiom(inverseProperties(P1,P2),main_triple(Tp1,'owl:inverseOf',Tp2)) :-
owl2_export_axiom(P1,main_triple(Tp1,_,_)),
owl2_export_axiom(P2,main_triple(Tp2,_,_)),
owl_rdf_assert(Tp1,'owl:inverseOf',Tp2),!.
owl2_export_axiom(functionalProperty(P),main_triple(Tp,'rdf:type','owl:FunctionalProperty')) :-
owl2_export_axiom(P,main_triple(Tp,_,_)),owl_rdf_assert(Tp,'rdf:type','owl:FunctionalProperty'),!.
owl2_export_axiom(inverseFunctionalProperty(P),main_triple(Tp,'rdf:type','owl:InverseFunctionalProperty')) :-
owl2_export_axiom(P,main_triple(Tp,_,_)),owl_rdf_assert(Tp,'rdf:type','owl:InverseFunctionalProperty'),!.
owl2_export_axiom(reflexiveProperty(P),main_triple(Tp,'rdf:type','owl:ReflexiveProperty')) :-
owl2_export_axiom(P,main_triple(Tp,_,_)),owl_rdf_assert(Tp,'rdf:type','owl:ReflexiveProperty'),!.
owl2_export_axiom(irreflexiveProperty(P),main_triple(Tp,'rdf:type','owl:IrreflexiveProperty')) :-
owl2_export_axiom(P,main_triple(Tp,_,_)),owl_rdf_assert(Tp,'rdf:type','owl:IrreflexiveProperty'),!.
owl2_export_axiom(symmetricProperty(P),main_triple(Tp,'rdf:type','owl:SymmetricProperty')) :-
owl2_export_axiom(P,main_triple(Tp,_,_)),owl_rdf_assert(Tp,'rdf:type','owl:SymmetricProperty'),!.
owl2_export_axiom(asymmetricProperty(P),main_triple(Tp,'rdf:type','owl:AsymmetricProperty')) :-
owl2_export_axiom(P,main_triple(Tp,_,_)),owl_rdf_assert(Tp,'rdf:type','owl:AsymmetricProperty'),!.
owl2_export_axiom(transitiveProperty(P),main_triple(Tp,'rdf:type','owl:TransitiveProperty')) :-
owl2_export_axiom(P,main_triple(Tp,_,_)),owl_rdf_assert(Tp,'rdf:type','owl:TransitiveProperty'),!.
owl2_export_axiom(hasKey([C|Rest]),main_triple(Tc,'owl:hasKey',LNode)) :-
owl2_export_axiom(C,main_triple(Tc,_,_)),
owl2_export_list(Rest,LNode),
owl_rdf_assert(Tc,'owl:hasKey',LNode),!.
%
% Individuals
%
owl2_export_axiom(sameIndividual([X,Y]),main_triple(Tx,'owl:sameAs',Ty)) :-
owl2_export_axiom(X,main_triple(Tx,_,_)),
owl2_export_axiom(Y,main_triple(Ty,_,_)),
owl_rdf_assert(Tx,'owl:sameAs',Ty),!.
owl2_export_axiom(differentIndividuals([X,Y]),main_triple(Tx,'owl:differentFrom',Ty)) :-
owl2_export_axiom(X,main_triple(Tx,_,_)),
owl2_export_axiom(Y,main_triple(Ty,_,_)),
owl_rdf_assert(Tx,'owl:differentFrom',Ty),!.
owl2_export_axiom(differentIndividuals(List),main_triple(BNode,'rdf:type','owl:AllDifferent')) :-
as2rdf_bnode(differentIndividuals(List),BNode),
owl2_export_list(List,LNode),
owl_rdf_assert(BNode,'rdf:type','owl:AllDifferent'),
owl_rdf_assert(BNode,'owl:members',LNode),!.
owl2_export_axiom(classAssertion(CE,A),main_triple(Ta,'rdf:type',Tce)) :-
owl2_export_axiom(A,main_triple(Ta,_,_)),
owl2_export_axiom(CE,main_triple(Tce,_,_)),
owl_rdf_assert(Ta,'rdf:type',Tce),
!.
owl2_export_axiom(propertyAssertion(P,A1,A2),main_triple(Ta1,Tp,Ta2)) :-
owl2_export_axiom(P,main_triple(Tp,_,_)),
owl2_export_axiom(A1,main_triple(Ta1,_,_)),
owl2_export_axiom(A2,main_triple(Ta2,_,_)),
owl_rdf_assert(Ta1,Tp,Ta2),!.
owl2_export_axiom(propertyAssertion(inverseOf(P),A1,A2),main_triple(Ta2,Tp,Ta1)) :-
owl2_export_axiom(P,main_triple(Tp,_,_)),
owl2_export_axiom(A1,main_triple(Ta1,_,_)),
owl2_export_axiom(A2,main_triple(Ta2,_,_)),
owl_rdf_assert(Ta2,Tp,Ta1),!.
owl2_export_axiom(negativePropertyAssertion(P,A1,A2),main_triple(BNode,'rdf:type','owl:NegativePropertyAssertion')) :-
as2rdf_bnode(negativePropertyAssertion(P,A1,A2),BNode),
owl2_export_axiom(P,main_triple(Tp,_,_)),
owl2_export_axiom(A1,main_triple(Ta1,_,_)),
owl2_export_axiom(A2,main_triple(Ta2,_,_)),
owl_rdf_assert(BNode,'rdf:type','owl:NegativePropertyAssertion'),
owl_rdf_assert(BNode,'owl:sourceIndividual',Ta1),
owl_rdf_assert(BNode,'owl:assertionProperty',Tp),
owl_rdf_assert(BNode,'owl:targetIndividual',Ta2),!.
%
% AnnotationAssestions
%
owl2_export_axiom(annotationAssertion(AP,As,Av),main_triple(TAs,AP,TAv)) :-
atom(As), % TODO: see issue#8. axiom annotations result is As=annotation(_,_,_)
!,
owl2_export_axiom(As,main_triple(TAs,_,_)),
owl2_export_axiom(Av,main_triple(TAv,_,_)),
owl_rdf_assert(TAs,AP,TAv),!.
owl2_export_axiom(annotationAssertion(Ap,As,Av),main_triple(TAs,TAp,TAv)) :-
as2rdf_bnode(As,BNode), % As is complex term - see above
owl2_export_axiom(Ap,main_triple(TAp,_,_)),
owl2_export_axiom(Av,main_triple(TAv,_,_)),
owl2_export_axiom(BNode,main_triple(TAs,_,_)).
%reify(TAs,TAp,TAv,_,_,_).
%
% Property Expressions (Descriptions)
%
owl2_export_axiom(inverseOf(P),main_triple(BNode,'owl:inverseOf',P)) :-
as2rdf_bnode(inverseOf(P),BNode),
owl_rdf_assert(BNode,'owl:inverseOf', P),!.
%
% Class Expressions (Descriptions)
%
owl2_export_axiom(intersectionOf([E|Rest]),main_triple(BNode,'rdf:type',Type)) :-
as2rdf_bnode(intersectionOf([E|Rest]),BNode),
owl2_export_list([E|Rest],LNode),
( classExpression(E) -> Type = 'owl:Class'; Type = 'owl:Datatype'),
owl_rdf_assert(BNode,'rdf:type',Type),
owl_rdf_assert(BNode,'owl:intersectionOf', LNode),
!.
owl2_export_axiom(unionOf([E|Rest]),main_triple(BNode,'rdf:type',Type)) :-
as2rdf_bnode(unionOf([E|Rest]),BNode),
owl2_export_list([E|Rest],LNode),
( classExpression(E) -> Type = 'owl:Class'; Type = 'owl:Datatype'),
owl_rdf_assert(BNode,'rdf:type',Type),
owl_rdf_assert(BNode,'owl:unionOf', LNode),!.
owl2_export_axiom(oneOf([E|Rest]),main_triple(BNode,'rdf:type',Type)) :-
as2rdf_bnode(oneOf([E|Rest]),BNode),
owl2_export_list([E|Rest],LNode),
( classExpression(E)
-> Type = 'owl:Class'
; Type = 'owl:Datatype'),
owl_rdf_assert(BNode,'rdf:type',Type),
owl_rdf_assert(BNode,'owl:oneOf', LNode),!.
owl2_export_axiom(datatypeRestriction(DT,FVs),main_triple(BNode,'rdf:type','rdfs:Datatype')) :-
as2rdf_bnode(datatypeRestriction(DT,FVs),BNode),
owl_rdf_assert(BNode,'rdf:type','rdfs:Datatype'),
owl2_export_axiom(DT,main_triple(Tpe,_,_)),owl_rdf_assert(BNode,'owl:onDatatype',Tpe),
owl2_export_list(FVs,LNode),
owl_rdf_assert(BNode,'owl:withRestrictions',LNode).
owl2_export_axiom(facetRestriction(F,V),main_triple(BNode,F2,V2)) :-
( sub_atom(F,_,_,_,'#')
-> F2=F2
; atom_concat('xsd:',F,F2)),
as2rdf_bnode(facetRestriction(F2,V2),BNode),
owl_rdf_assert(BNode,F,V). % TODO -- check
owl2_export_axiom(complementOf(E),main_triple(BNode,'rdf:type',Type)) :-
as2rdf_bnode(complementOf(E),BNode),
owl2_export_axiom(E,main_triple(Te,_,_)),
( classExpression(E) -> Type = 'owl:complementOf'; Type = 'owl:datatypeComplementOf'),
owl_rdf_assert(BNode,'owl:complementOf', Te),!.
owl2_export_axiom(someValuesFrom(PE,CEorDR),main_triple(BNode,'rdf:type','owl:Restriction')) :-
as2rdf_bnode(someValuesFrom(PE,CEorDR),BNode),
owl_rdf_assert(BNode,'rdf:type','owl:Restriction'),
owl2_export_axiom(PE,main_triple(Tpe,_,_)),owl_rdf_assert(BNode,'owl:onProperty',Tpe),
owl2_export_axiom(CEorDR,main_triple(Tce,_,_)),owl_rdf_assert(BNode,'owl:someValuesFrom',Tce),!.
owl2_export_axiom(allValuesFrom(PE,CEorDR),main_triple(BNode,'rdf:type','owl:Restriction')) :-
as2rdf_bnode(allValuesFrom(PE,CEorDR),BNode),
owl_rdf_assert(BNode,'rdf:type','owl:Restriction'),
owl2_export_axiom(PE,main_triple(Tpe,_,_)),owl_rdf_assert(BNode,'owl:onProperty',Tpe),
owl2_export_axiom(CEorDR,main_triple(Tce,_,_)),owl_rdf_assert(BNode,'owl:allValuesFrom',Tce),!.
owl2_export_axiom(hasValue(PE,Value),main_triple(BNode,'rdf:type','owl:Restriction')) :-
as2rdf_bnode(hasValue(PE,Value),BNode),
owl_rdf_assert(BNode,'rdf:type','owl:Restriction'),
owl2_export_axiom(PE,main_triple(Tpe,_,_)),owl_rdf_assert(BNode,'owl:onProperty',Tpe),
owl2_export_axiom(Value,main_triple(TValue,_,_)),owl_rdf_assert(BNode,'owl:hasValue',TValue),!.
owl2_export_axiom(hasSelf(OPE),main_triple(BNode,'rdf:type','owl:Restriction')) :-
as2rdf_bnode(hasValue(OPE),BNode),
owl_rdf_assert(BNode,'rdf:type','owl:Restriction'),
owl2_export_axiom(OPE,main_triple(Tope,_,_)),owl_rdf_assert(BNode,'owl:onProperty',Tope),
owl_rdf_assert(BNode,'owl:hasSelf', literal(type('http://www.w3.org/2001/XMLSchema#boolean','true'))),!.
owl2_export_axiom(minCardinality(N,OPE),main_triple(BNode,'rdf:type','owl:Restriction')) :-
as2rdf_bnode(minCardinality(N,OPE),BNode),
owl_rdf_assert(BNode,'rdf:type','owl:Restriction'),
owl_rdf_assert(BNode,'owl:minCardinality',literal(type('http://www.w3.org/2001/XMLSchema#nonNegativeInteger',N))),
owl2_export_axiom(OPE,main_triple(Tope,_,_)),owl_rdf_assert(BNode,'owl:onProperty',Tope),!.
owl2_export_axiom(minCardinality(N,OPE,CEorDR),main_triple(BNode,'rdf:type','owl:Restriction')) :-
as2rdf_bnode(minCardinality(N,OPE,CEorDR),BNode),
owl_rdf_assert(BNode,'rdf:type','owl:Restriction'),
owl_rdf_assert(BNode,'owl:minQualifiedCardinality',literal(type('http://www.w3.org/2001/XMLSchema#nonNegativeInteger',N))),
owl2_export_axiom(OPE,main_triple(Tope,_,_)),owl_rdf_assert(BNode,'owl:onProperty',Tope),
owl2_export_axiom(CEorDR,main_triple(Tce,_,_)),
( classExpression(CEorDR) -> owl_rdf_assert(BNode,'owl:onClass',Tce); owl_rdf_assert(BNode,'owl:onDataRange',Tce)),!.
owl2_export_axiom(maxCardinality(N,OPE),main_triple(BNode,'rdf:type','owl:Restriction')) :-
as2rdf_bnode(maxCardinality(N,OPE),BNode),
owl_rdf_assert(BNode,'rdf:type','owl:Restriction'),
owl_rdf_assert(BNode,'owl:maxCardinality',literal(type('http://www.w3.org/2001/XMLSchema#nonNegativeInteger',N))),
owl2_export_axiom(OPE,main_triple(Tope,_,_)),owl_rdf_assert(BNode,'owl:onProperty',Tope),!.
owl2_export_axiom(maxCardinality(N,OPE,CEorDR),main_triple(BNode,'rdf:type','owl:Restriction')) :-
as2rdf_bnode(maxCardinality(N,OPE,CEorDR),BNode),
owl_rdf_assert(BNode,'rdf:type','owl:Restriction'),
owl_rdf_assert(BNode,'owl:maxQualifiedCardinality',literal(type('http://www.w3.org/2001/XMLSchema#nonNegativeInteger',N))),
owl2_export_axiom(OPE,main_triple(Tope,_,_)),owl_rdf_assert(BNode,'owl:onProperty',Tope),
owl2_export_axiom(CEorDR,main_triple(Tce,_,_)),
( classExpression(CEorDR) -> owl_rdf_assert(BNode,'owl:onClass',Tce); owl_rdf_assert(BNode,'owl:onDataRange',Tce)),!.
owl2_export_axiom(exactCardinality(N,OPE),main_triple(BNode,'rdf:type','owl:Restriction')) :-
as2rdf_bnode(exactCardinality(N,OPE),BNode),
owl_rdf_assert(BNode,'rdf:type','owl:Restriction'),
owl_rdf_assert(BNode,'owl:cardinality',literal(type('http://www.w3.org/2001/XMLSchema#nonNegativeInteger',N))),
owl2_export_axiom(OPE,main_triple(Tope,_,_)),owl_rdf_assert(BNode,'owl:onProperty',Tope),!.
owl2_export_axiom(exactCardinality(N,OPE,CEorDR),main_triple(BNode,'rdf:type','owl:Restriction')) :-
as2rdf_bnode(exactCardinality(N,OPE,CEorDR),BNode),
owl_rdf_assert(BNode,'rdf:type','owl:Restriction'),
owl_rdf_assert(BNode,'owl:qualifiedCardinality',literal(type('http://www.w3.org/2001/XMLSchema#nonNegativeInteger',N))),
owl2_export_axiom(OPE,main_triple(Tope,_,_)),owl_rdf_assert(BNode,'owl:onProperty',Tope),
owl2_export_axiom(CEorDR,main_triple(Tce,_,_)),
( classExpression(CEorDR) -> owl_rdf_assert(BNode,'owl:onClass',Tce); owl_rdf_assert(BNode,'owl:onDataRange',Tce)),!.
%
% SWRL
% (this may eventually end up in a separate hooks file?)
owl2_export_axiom(implies(AL,CL),main_triple(RuleNode,'rdf:type','swrl:Imp')) :-
% TODO: allow rules to have IDs in swrl.pl
% for now we force it to be a bnode
!,
%rdf_bnode(RuleNode),
as2rdf_bnode(implies(AL,CL),RuleNode),
owl_rdf_assert(RuleNode,'rdf:type','swrl:Imp'),
swrl_export_atom_list(AL,ALNode),
swrl_export_atom_list(CL,CLNode),
owl_rdf_assert(RuleNode,'swrl:body', ALNode),
owl_rdf_assert(RuleNode,'swrl:head', CLNode).
:- multifile translate_iri_hook/2.
owl2_export_axiom(IRI,main_triple(T,_,_)) :- translate_iri_hook(IRI,T), !.
owl2_export_axiom(IRI,main_triple(IRI,_,_)) :- atom(IRI),!. % better iri(IRI).
owl2_export_axiom(X,main_triple(X,_,_)) :- X=literal(_),!. % better iri(IRI).
owl2_export_axiom(Any,main_triple(Any,_,_)) :- format(user_error,'unresolved: ~w~n',[Any]).
translate_iri(X,Y) :- translate_iri_hook(X,Y),!.
translate_iri(X,X).
/*
owl2_export_annotation(Parent)
Parent can be an axiom or an annotation itself (nested annotations)
*/
owl2_export_annotation(annotation(_,_,_),_,S,_,_) :-
\+ atom(S), % do nothing with this for now - see issue #8
!.
owl2_export_annotation(Parent,ParentType,S,ParentP,ParentO) :-
( Parent = annotation(_,ParentAP,ParentAV)
-> P = ParentAP,
O = ParentAV,
owl_rdf_assert(S,P,O)
; P = ParentP, O = ParentO),
findall(annotation(Parent,AP,AV),annotation(Parent,AP,AV),ANNs),
( ANNs = [_|_]
-> as2rdf_bnode(Parent,BNode),
reify(BNode,'rdf:type',ParentType,S,P,O),
forall(member(ANN,ANNs),owl2_export_annotation(ANN,'owl:Annotation',BNode,_,_))
; true).
reify(SNode,PTerm,OTerm,S,P,O) :-
owl_rdf_assert(SNode,PTerm,OTerm),
owl_rdf_assert(SNode,'owl:annotatedSource',S),
owl_rdf_assert(SNode,'owl:annotatedProperty',P),
owl_rdf_assert(SNode,'owl:annotatedTarget',O).
/*
owl2_export_list(+List, -Node).
Generates RDF triples for the List of construct based on
Abstract Syntax list transformation rules. Node represents the
List in the resulting RDF graph
*/
owl2_export_list([],'rdf:nil').
owl2_export_list([S|Rest],Node) :-
as2rdf_bnode([S|Rest],Node),
owl2_export_axiom(S,main_triple(Ts,_,_)),
% this is to circumvent a bug in list writing:
( S=literal(_)
-> true
; owl_rdf_assert(Node,'rdf:type', 'rdf:List')),
owl_rdf_assert(Node,'rdf:first', Ts),
owl2_export_list(Rest,Node2),
owl_rdf_assert(Node,'rdf:rest',Node2).
swrl_export_atom_list([],'rdf:nil').
swrl_export_atom_list([S|Rest],Node) :-
as2rdf_bnode([S|Rest],Node),
swrl_export_atom(S,main_triple(Ts,_,_)),
%owl_rdf_assert(Node,'rdf:type', 'swrl:AtomList'),
owl_rdf_assert(Node,'rdf:type', 'rdf:List'),
owl_rdf_assert(Node,'rdf:first', Ts),
swrl_export_atom_list(Rest,Node2),
owl_rdf_assert(Node,'rdf:rest',Node2).
% in swrl.pl atom lists are weakly typed - we allow a swrl atom to
% stand in for an atom list for convenience
swrl_export_atom_list(X,Node) :-
\+ atom(X),
swrl_export_atom_list([X],Node).
swrl_export_argument_list([],'rdf:nil').
swrl_export_argument_list([S|Rest],Node) :-
as2rdf_bnode([S|Rest],Node),
swrl_export_argument(S,main_triple(Ts,_,_)),
owl_rdf_assert(Node,'rdf:type', 'swrl:ArgumentList'),
owl_rdf_assert(Node,'rdf:first', Ts),
swrl_export_argument_list(Rest,Node2),
owl_rdf_assert(Node,'rdf:rest',Node2).
swrl_export_atom(propertyAssertion(OPE,A1,A2),main_triple(BNode,'rdf:type','swrl:DatavaluedPropertyAtom')) :-
dataProperty(OPE),
!,
rdf_bnode(BNode),
owl_rdf_assert(BNode,'rdf:type','swrl:DatavaluedPropertyAtom'),
owl2_export_axiom(OPE,main_triple(Tope,_,_)),owl_rdf_assert(BNode,'swrl:propertyPredicate',Tope),
swrl_export_argument(A1,main_triple(TA1,_,_)),owl_rdf_assert(BNode,'swrl:argument1',TA1),
swrl_export_argument(A2,main_triple(TA2,_,_)),owl_rdf_assert(BNode,'swrl:argument2',TA2).
swrl_export_atom(propertyAssertion(OPE,A1,A2),main_triple(BNode,'rdf:type','swrl:IndividualPropertyAtom')) :-
!,
rdf_bnode(BNode),
%as2rdf_bnode(propertyAssertion(OPE,A1,A2),BNode),
owl_rdf_assert(BNode,'rdf:type','swrl:IndividualPropertyAtom'),
owl2_export_axiom(OPE,main_triple(Tope,_,_)),owl_rdf_assert(BNode,'swrl:propertyPredicate',Tope),
swrl_export_argument(A1,main_triple(TA1,_,_)),owl_rdf_assert(BNode,'swrl:argument1',TA1),
swrl_export_argument(A2,main_triple(TA2,_,_)),owl_rdf_assert(BNode,'swrl:argument2',TA2).
swrl_export_atom(builtin(OPE,Args),main_triple(BNode,'rdf:type','swrl:BuiltinAtom')) :-
!,
rdf_bnode(BNode),
owl_rdf_assert(BNode,'rdf:type','swrl:BuiltinAtom'),
%owl2_export_axiom(OPE,main_triple(Tope,_,_)),owl_rdf_assert(BNode,'swrl:builtin',Tope),
atom_concat('swrlb:',OPE,Builtin),owl_rdf_assert(BNode,'swrl:builtin',Builtin),
swrl_export_argument_list(Args,ListNode),
owl_rdf_assert(BNode,'swrl:arguments',ListNode).
swrl_export_atom(description(C,A1),main_triple(BNode,'rdf:type','swrl:ClassAtom')) :-
!,
rdf_bnode(BNode),
%as2rdf_bnode(description(C,A1),BNode),
owl_rdf_assert(BNode,'rdf:type','swrl:ClassAtom'),
owl2_export_axiom(C,main_triple(TC,_,_)),owl_rdf_assert(BNode,'swrl:classPredicate',TC),
swrl_export_argument(A1,main_triple(TA1,_,_)),owl_rdf_assert(BNode,'swrl:argument1',TA1).
swrl_export_atom(differentFrom(A1,A2),main_triple(BNode,'rdf:type','swrl:DifferentIndividualsAtom')) :-
!,
rdf_bnode(BNode),
%as2rdf_bnode(differentFrom(A1,A2),BNode),
owl_rdf_assert(BNode,'rdf:type','swrl:DifferentIndividualsAtom'),
swrl_export_argument(A1,main_triple(TA1,_,_)),owl_rdf_assert(BNode,'swrl:argument1',TA1),
swrl_export_argument(A2,main_triple(TA2,_,_)),owl_rdf_assert(BNode,'swrl:argument2',TA2).
swrl_export_atom(sameAs(A1,A2),main_triple(BNode,'rdf:type','swrl:SameIndividualAtom')) :-
!,
rdf_bnode(BNode),
%as2rdf_bnode(sameAs(A1,A2),BNode),
owl_rdf_assert(BNode,'rdf:type','swrl:SameIndividualAtom'),
swrl_export_argument(A1,main_triple(TA1,_,_)),owl_rdf_assert(BNode,'swrl:argument1',TA1),
swrl_export_argument(A2,main_triple(TA2,_,_)),owl_rdf_assert(BNode,'swrl:argument2',TA2).
% allow convenient non-canonical form
swrl_export_atom(CA,T) :-
CA=..[C,A],
!,
swrl_export_atom(class(C,A),T).
swrl_export_atom(PA,T) :-
PA=..[P,A1,A2],
!,
swrl_export_atom(propertyAssertion(P,A1,A2),T).
swrl_export_argument(v(V),main_triple(V1,'rdf:type','swrl:Variable')) :-
!,
( number(V)
-> atom_concat('#v',V,V1)
; V1=V),
owl_rdf_assert(V1,'rdf:type','swrl:Variable'),!.
swrl_export_argument(d(V),T) :- swrl_export_argument(v(V),T).
swrl_export_argument(i(V),T) :- swrl_export_argument(v(V),T).
swrl_export_argument(V,T) :- owl2_export_axiom(V,T).
/*
owl_rdf_assert(S,P,O).
Expands the NS the S, P, O terms and asserts into the RDF
database
*/
owl_rdf_assert(S,P,O) :-
expand_ns(S,S1),expand_ns(P,P1),expand_ns(O,O1),
debug(rdf_assert,'assert: ~w ~w ~w.',[S,P,O]),
rdf_db:rdf_assert(S1,P1,O1), !.
/*
as2rdf_bnode(+X,-Node).
It generates a bnode Node for construct X in case it does not
exist already as a blanknode/3 clause.
*/
as2rdf_bnode(X,Node) :-
blanknode_gen(Node,X),
debug(bnode,'bnode REUSE ~w ==> ~w',[X,Node]),
!.
as2rdf_bnode(X,Node) :-
rdf_db:rdf_bnode(Node),
assert(blanknode_gen(Node,X)),
debug(bnode,'bnode NEW ~w ==> ~w',[X,Node]),
!.