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org.mindswap.pellet.jena.graph.query.GraphQueryHandler Maven / Gradle / Ivy
// Copyright (c) 2006 - 2008, Clark & Parsia, LLC.
// This source code is available under the terms of the Affero General Public License v3.
//
// Please see LICENSE.txt for full license terms, including the availability of proprietary exceptions.
// Questions, comments, or requests for clarification: [email protected]
package org.mindswap.pellet.jena.graph.query;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.mindswap.pellet.KnowledgeBase;
import org.mindswap.pellet.Role;
import org.mindswap.pellet.jena.JenaUtils;
import org.mindswap.pellet.jena.ModelExtractor;
import org.mindswap.pellet.jena.ModelExtractor.StatementType;
import org.mindswap.pellet.jena.graph.loader.GraphLoader;
import org.mindswap.pellet.jena.vocabulary.OWL2;
import org.mindswap.pellet.utils.iterator.FlattenningIterator;
import org.mindswap.pellet.utils.iterator.IteratorUtils;
import org.mindswap.pellet.utils.iterator.NestedIterator;
import aterm.ATermAppl;
import com.clarkparsia.pellet.utils.CollectionUtils;
import com.hp.hpl.jena.graph.Graph;
import com.hp.hpl.jena.graph.Node;
import com.hp.hpl.jena.graph.Triple;
import com.hp.hpl.jena.rdf.model.Resource;
import com.hp.hpl.jena.util.iterator.ExtendedIterator;
import com.hp.hpl.jena.util.iterator.Map1;
import com.hp.hpl.jena.util.iterator.NullIterator;
import com.hp.hpl.jena.util.iterator.SingletonIterator;
import com.hp.hpl.jena.util.iterator.WrappedIterator;
import com.hp.hpl.jena.vocabulary.OWL;
import com.hp.hpl.jena.vocabulary.RDF;
import com.hp.hpl.jena.vocabulary.RDFS;
import com.hp.hpl.jena.vocabulary.ReasonerVocabulary;
public class GraphQueryHandler {
public final static Logger log = Logger.getLogger( GraphQueryHandler.class.getName() );
protected static final Node VAR = Node.ANY;
protected static final Node CONST = Node.createURI( "CONST" );
private static final Node[] BUILTIN_PREDICATES = new Node[] {
RDF.type.asNode(),
OWL.sameAs.asNode(),
OWL.differentFrom.asNode(),
RDFS.subClassOf.asNode(),
OWL.equivalentClass.asNode(),
OWL.complementOf.asNode(),
OWL.disjointWith.asNode(),
RDFS.subPropertyOf.asNode(),
OWL.equivalentProperty.asNode(),
OWL.inverseOf.asNode(),
OWL2.propertyDisjointWith.asNode(),
RDFS.domain.asNode(),
RDFS.range.asNode()
};
private static final Node[] BUILTIN_QUERY_PREDICATES = new Node[] {
ReasonerVocabulary.directRDFType.asNode(),
ReasonerVocabulary.directSubClassOf.asNode(),
ReasonerVocabulary.directSubPropertyOf.asNode()
};
private static final Node[] BUILTIN_TYPES = new Node[] {
OWL.Class.asNode(),
OWL.AnnotationProperty.asNode(),
OWL.ObjectProperty.asNode(),
OWL.DatatypeProperty.asNode(),
OWL.FunctionalProperty.asNode(),
OWL.InverseFunctionalProperty.asNode(),
OWL.TransitiveProperty.asNode(),
OWL.SymmetricProperty.asNode(),
OWL2.AsymmetricProperty.asNode(),
OWL2.ReflexiveProperty.asNode(),
OWL2.IrreflexiveProperty.asNode()
};
private static final Node[] BUILTIN_QUERY_TYPES = new Node[] {
RDFS.Class.asNode(),
RDF.Property.asNode()
};
private static final Set BUILTIN_KEYWORDS = new HashSet();
static {
for( Node node : BUILTIN_PREDICATES ) {
BUILTIN_KEYWORDS.add( node );
}
for( Node node : BUILTIN_QUERY_PREDICATES ) {
BUILTIN_KEYWORDS.add( node );
}
for( Node node : BUILTIN_TYPES ) {
BUILTIN_KEYWORDS.add( node );
}
for( Node node : BUILTIN_QUERY_TYPES ) {
BUILTIN_KEYWORDS.add( node );
}
}
private static final Map QUERY_HANDLERS = CollectionUtils.makeMap();
static {
registerQueryHandlers();
}
private static void registerHandler(Node s, Resource p, Node o, TripleQueryHandler handler) {
registerHandler( s, p.asNode(), o, handler );
}
private static void registerHandler(Node s, Resource p, Resource o, TripleQueryHandler handler) {
registerHandler( s, p.asNode(), o.asNode(), handler );
}
private static void registerHandler( Node s, Node p, Node o, TripleQueryHandler handler ) {
Triple pattern = Triple.create( s, p, o );
if( log.isLoggable( Level.FINE ) )
log.fine( "Registering handler for pattern: " + pattern );
Object prev = QUERY_HANDLERS.put( pattern, handler );
if( prev != null ) {
if( log.isLoggable( Level.SEVERE ) )
log.severe( "Existing handler found for pattern: " + pattern );
}
}
private static void registerQueryHandlers() {
registerHandler( VAR, VAR, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return true;
}
@Override
public ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
ModelExtractor me = new ModelExtractor( kb );
me.setSelector( StatementType.ALL_STATEMENTS );
Graph graph = me.extractModel().getGraph();
return graph.find( Triple.ANY );
}
}
);
// TODO built-in predicates can be categorized as ABox, TBox and RBox and we can issue only queries that are not obviously false
registerHandler( VAR, VAR, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
ATermAppl term = loader.node2term( o );
return kb.isClass( term ) || kb.isProperty( term ) || kb.isIndividual( term );
}
@Override
public ExtendedIterator find(final KnowledgeBase kb, final GraphLoader loader, final Node s, final Node p, final Node o) {
ExtendedIterator builtinPredicates = NullIterator.instance();
if( !o.isLiteral() ) {
for( Node pred : BUILTIN_PREDICATES ) {
builtinPredicates = builtinPredicates.andThen( findTriple( kb, loader, s, pred, o ) );
}
}
ExtendedIterator propertyAssertions = WrappedIterator.create(
new NestedIterator( kb.getProperties() ) {
@Override
public Iterator getInnerIterator(ATermAppl prop) {
Node p = JenaUtils.makeGraphNode( prop );
return findTriple( kb, loader, s, p, o );
}
}
);
return builtinPredicates.andThen( propertyAssertions );
}
}
);
registerHandler( CONST, VAR, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
ATermAppl term = loader.node2term( s );
return kb.isClass( term ) || kb.isProperty( term ) || kb.isIndividual( term );
}
@Override
public ExtendedIterator find(final KnowledgeBase kb, final GraphLoader loader, final Node s, final Node p, final Node o) {
ExtendedIterator builtinPredicates = NullIterator.instance();
for( Node pred : BUILTIN_PREDICATES ) {
builtinPredicates = builtinPredicates.andThen( findTriple( kb, loader, s, pred, o ) );
}
ExtendedIterator propertyAssertions = WrappedIterator.create(
new NestedIterator( kb.getProperties() ) {
@Override
public Iterator getInnerIterator(ATermAppl prop) {
Node p = JenaUtils.makeGraphNode( prop );
return findTriple( kb, loader, s, p, o );
}
}
);
return builtinPredicates.andThen( propertyAssertions );
}
}
);
registerHandler( CONST, VAR, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
ATermAppl t = loader.node2term( s );
return kb.isClass( t ) || kb.isProperty( t ) || kb.isIndividual( t );
}
@Override
public ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, final Node s, final Node p, Node o) {
ExtendedIterator result = NullIterator.instance();
ATermAppl subj = loader.node2term( s );
ATermAppl obj = loader.node2term( o );
if( kb.isIndividual( subj ) || kb.isIndividual( obj ) ) {
if( kb.isIndividual( subj )) {
List properties = kb.getProperties( loader.node2term( s ), loader.node2term( o ) );
result = propertyFiller( s, properties, o );
if(kb.isIndividual( obj ) ) {
if( kb.isSameAs( subj, obj ) )
result = result.andThen( new SingletonIterator( Triple.create( s, OWL.sameAs.asNode(), o ) ) );
if( kb.isDifferentFrom( subj, obj ) )
result = result.andThen( new SingletonIterator( Triple.create( s, OWL.differentFrom.asNode(), o ) ) );
}
}
}
else {
for( Node pred : BUILTIN_PREDICATES ) {
result = result.andThen( findTriple( kb, loader, s, pred, o ) );
}
}
return result;
}
}
);
registerHandler( VAR, CONST, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
ATermAppl prop = loader.node2term( p );
if( !kb.isProperty( prop ) )
return false;
for( ATermAppl ind : kb.getIndividuals() ) {
if( kb.hasKnownPropertyValue( ind, prop, null ).isTrue() ) {
return true;
}
}
return false;
}
@Override
public ExtendedIterator find(final KnowledgeBase kb, GraphLoader loader, Node s, final Node p, Node o) {
final ATermAppl prop = loader.node2term( p );
return WrappedIterator.create(
new NestedIterator( kb.getIndividuals() ) {
@Override
public Iterator getInnerIterator(ATermAppl subj) {
Node s = JenaUtils.makeGraphNode( subj );
return objectFiller( s, p, kb.getPropertyValues( prop, subj ) );
}
}
);
}
}
);
registerHandler( VAR, CONST, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
ATermAppl prop = loader.node2term( p );
ATermAppl val = loader.node2term( o );
return !kb.getIndividualsWithProperty( prop, val ).isEmpty();
}
@Override
public ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
ATermAppl prop = loader.node2term( p );
ATermAppl val = loader.node2term( o );
return subjectFiller( kb.getIndividualsWithProperty( prop, val ), p, o );
}
}
);
registerHandler( CONST, CONST, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
ATermAppl ind = loader.node2term( s );
ATermAppl prop = loader.node2term( p );
return kb.isIndividual( ind ) && kb.hasPropertyValue( ind, prop, null );
}
@Override
public ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
ATermAppl ind = loader.node2term( s );
ATermAppl prop = loader.node2term( p );
return objectFiller( s, p, kb.getPropertyValues( prop, ind ) );
}
}
);
registerHandler( CONST, CONST, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
ATermAppl subj = loader.node2term( s );
ATermAppl prop = loader.node2term( p );
ATermAppl obj = loader.node2term( o );
return kb.hasPropertyValue( subj, prop, obj );
}
}
);
registerHandler( VAR, RDF.type, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return true;
}
@Override
public ExtendedIterator find(final KnowledgeBase kb, final GraphLoader loader, final Node subj, final Node pred, Node obj) {
ExtendedIterator builtinTypes = WrappedIterator.create(
new NestedIterator( Arrays.asList( BUILTIN_TYPES ) ) {
@Override
public Iterator getInnerIterator(Node builtinType) {
return findTriple( kb, loader, subj, pred, builtinType );
}
}
);
ExtendedIterator typeAssertions = WrappedIterator.create(
new NestedIterator( kb.getAllClasses() ) {
@Override
public Iterator getInnerIterator(ATermAppl cls) {
return subjectFiller( kb.getInstances( cls ), pred, JenaUtils.makeGraphResource( cls ) );
}
}
);
return builtinTypes.andThen( typeAssertions );
}
}
);
registerHandler( VAR, RDF.type, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.hasInstance( loader.node2term( o ) );
}
@Override
public ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return subjectFiller( kb.getInstances( loader.node2term( o ) ), p, o );
}
}
);
registerHandler( CONST, RDF.type, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
ATermAppl t = loader.node2term( s );
return kb.isClass( t ) || kb.isProperty( t ) || kb.isIndividual( t );
}
@Override
public ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, final Node s, final Node p, Node o) {
ATermAppl term = loader.node2term( s );
if( kb.isIndividual( term ) ) {
return objectSetFiller( s, p, kb.getTypes( term ) );
}
List types = new ArrayList();
if( kb.isClass( term ) ) {
types.add( OWL.Class.asNode() );
}
else if( kb.isDatatype( term ) ) {
types.add( RDFS.Datatype.asNode() );
}
else if( kb.isObjectProperty( term ) ) {
Role role = kb.getRole( term );
types.add( OWL.ObjectProperty.asNode() );
if( role.isFunctional() )
types.add( OWL.FunctionalProperty.asNode() );
if( role.isInverseFunctional() )
types.add( OWL.InverseFunctionalProperty.asNode() );
if( role.isTransitive() )
types.add( OWL.TransitiveProperty.asNode() );
if( role.isSymmetric() )
types.add( OWL.SymmetricProperty.asNode() );
if( role.isAsymmetric() )
types.add( OWL2.AsymmetricProperty.asNode() );
if( role.isReflexive() )
types.add( OWL2.ReflexiveProperty.asNode() );
if( role.isIrreflexive() )
types.add( OWL2.IrreflexiveProperty.asNode() );
}
else if( kb.isDatatypeProperty( term ) ) {
Role role = kb.getRole( term );
types.add( OWL.DatatypeProperty.asNode() );
if( role.isFunctional() )
types.add( OWL.FunctionalProperty.asNode() );
if( role.isInverseFunctional() )
types.add( OWL.InverseFunctionalProperty.asNode() );
}
else if( kb.isAnnotationProperty( term ) ) {
types.add( OWL.AnnotationProperty.asNode() );
}
Map1 map = new Map1() {
public Triple map1( Node o ) {
return Triple.create( s, p, o );
}
};
return WrappedIterator.create( types.iterator() ).mapWith( map );
}
}
);
registerHandler( CONST, RDF.type, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isType( loader.node2term( s ), loader.node2term( o ) );
}
}
);
registerHandler( VAR, ReasonerVocabulary.directRDFType, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return IteratorUtils.flatten( kb.getTypes( subj, true ).iterator() );
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getIndividuals();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return !kb.getIndividuals().isEmpty();
}
}
);
registerHandler( VAR, ReasonerVocabulary.directRDFType, CONST,
new SubjectVarHandler() {
@Override
public Set getSubjects(KnowledgeBase kb, ATermAppl obj) {
return kb.getInstances( obj, true );
}
}
);
registerHandler( CONST, ReasonerVocabulary.directRDFType, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return kb.isIndividual( loader.node2term( subj ) );
}
@Override
public ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return objectSetFiller( subj, pred, kb.getTypes( loader.node2term( subj ), true ) );
}
}
);
registerHandler( CONST, ReasonerVocabulary.directRDFType, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.getInstances( loader.node2term( o ), true ).contains( loader.node2term( s ) );
}
}
);
registerHandler( VAR, RDF.type, OWL.Class,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getAllClasses();
}
}
);
registerHandler( VAR, RDF.type, RDFS.Class,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getAllClasses();
}
}
);
registerHandler( CONST, RDF.type, OWL.Class,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isClass( loader.node2term( s ) );
}
}
);
registerHandler( CONST, RDF.type, RDFS.Class,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isClass( loader.node2term( s ) );
}
}
);
registerHandler( CONST, RDF.type, RDF.Property,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isProperty( loader.node2term( s ) );
}
}
);
registerHandler( VAR, RDF.type, RDF.Property,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getProperties();
}
}
);
registerHandler( CONST, RDF.type, OWL.ObjectProperty,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isObjectProperty( loader.node2term( s ) );
}
}
);
registerHandler( VAR, RDF.type, OWL.ObjectProperty,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getObjectProperties();
}
}
);
registerHandler( CONST, RDF.type, OWL.DatatypeProperty,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isDatatypeProperty( loader.node2term( s ) );
}
}
);
registerHandler( VAR, RDF.type, OWL.DatatypeProperty,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getDataProperties();
}
}
);
registerHandler( CONST, RDF.type, OWL.AnnotationProperty,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isAnnotationProperty( loader.node2term( s ) );
}
}
);
registerHandler( VAR, RDF.type, OWL.AnnotationProperty,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getAnnotationProperties();
}
}
);
registerHandler( CONST, RDF.type, OWL.TransitiveProperty,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isTransitiveProperty( loader.node2term( s ) );
}
}
);
registerHandler( VAR, RDF.type, OWL.TransitiveProperty,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getTransitiveProperties();
}
}
);
registerHandler( CONST, RDF.type, OWL.SymmetricProperty,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isSymmetricProperty( loader.node2term( s ) );
}
}
);
registerHandler( VAR, RDF.type, OWL.SymmetricProperty,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getSymmetricProperties();
}
}
);
registerHandler( CONST, RDF.type, OWL.FunctionalProperty,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isFunctionalProperty( loader.node2term( s ) );
}
}
);
registerHandler( VAR, RDF.type, OWL.FunctionalProperty,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getFunctionalProperties();
}
}
);
registerHandler( CONST, RDF.type, OWL.InverseFunctionalProperty,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isInverseFunctionalProperty( loader.node2term( s ) );
}
}
);
registerHandler( VAR, RDF.type, OWL.InverseFunctionalProperty,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getInverseFunctionalProperties();
}
}
);
registerHandler( CONST, RDF.type, OWL2.ReflexiveProperty,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isReflexiveProperty( loader.node2term( s ) );
}
}
);
registerHandler( VAR, RDF.type, OWL2.ReflexiveProperty,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getReflexiveProperties();
}
}
);
registerHandler( CONST, RDF.type, OWL2.IrreflexiveProperty,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isIrreflexiveProperty( loader.node2term( s ) );
}
}
);
registerHandler( VAR, RDF.type, OWL2.IrreflexiveProperty,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getIrreflexiveProperties();
}
}
);
registerHandler( CONST, RDF.type, OWL2.AsymmetricProperty,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isAsymmetricProperty( loader.node2term( s ) );
}
}
);
registerHandler( VAR, RDF.type, OWL2.AsymmetricProperty,
new BuiltinTypeQueryHandler() {
@Override
public Set getResults(KnowledgeBase kb) {
return kb.getAsymmetricProperties();
}
}
);
registerHandler( VAR, RDFS.subClassOf, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return new FlattenningIterator( kb.getSuperClasses( subj, false ) );
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getAllClasses();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return true;
}
}
);
registerHandler( VAR, RDFS.subClassOf, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isClass( loader.node2term( o ) );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return subjectSetFiller( kb.getSubClasses( loader.node2term( o ) ), p, o );
}
}
);
registerHandler( CONST, RDFS.subClassOf, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isClass( loader.node2term( s ) );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return objectSetFiller( s, p, kb.getSuperClasses( loader.node2term( s ) ) );
}
}
);
registerHandler( CONST, RDFS.subClassOf, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isSubClassOf( loader.node2term( s ), loader.node2term( o ) );
}
}
);
registerHandler( VAR, ReasonerVocabulary.directSubClassOf, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return new FlattenningIterator( kb.getSuperClasses( subj, true ) );
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getAllClasses();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return true;
}
}
);
registerHandler( VAR, ReasonerVocabulary.directSubClassOf, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isClass( loader.node2term( o ) ) && !o.equals( OWL.Nothing.asNode() );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return subjectSetFiller( kb.getSubClasses( loader.node2term( o ), true ), p, o );
}
}
);
registerHandler( CONST, ReasonerVocabulary.directSubClassOf, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isClass( loader.node2term( s ) ) && !o.equals( OWL.Thing.asNode() );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return objectSetFiller( s, p, kb.getSuperClasses( loader.node2term( s ), true ) );
}
}
);
registerHandler( CONST, ReasonerVocabulary.directSubClassOf, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.getSuperClasses( loader.node2term( s ), true ).contains( kb.getAllEquivalentClasses( loader.node2term( o ) ) );
}
}
);
registerHandler( VAR, OWL.equivalentClass, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return kb.getAllEquivalentClasses( subj ).iterator();
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getAllClasses();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return true;
}
}
);
registerHandler( VAR, OWL.equivalentClass, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isClass( loader.node2term( o ) );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return subjectFiller( kb.getAllEquivalentClasses( loader.node2term( o ) ), p, o );
}
}
);
registerHandler( CONST, OWL.equivalentClass, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isClass( loader.node2term( s ) );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return objectFiller( s, p, kb.getAllEquivalentClasses( loader.node2term( s ) ) );
}
}
);
registerHandler( CONST, OWL.equivalentClass, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isEquivalentClass( loader.node2term( s ), loader.node2term( o ) );
}
}
);
registerHandler( VAR, OWL.disjointWith, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return new FlattenningIterator( kb.getDisjointClasses( subj ) );
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getAllClasses();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return true;
}
}
);
registerHandler( VAR, OWL.disjointWith, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isClass( loader.node2term( o ) );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return subjectSetFiller( kb.getDisjointClasses( loader.node2term( o ) ), p, o );
}
}
);
registerHandler( CONST, OWL.disjointWith, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isClass( loader.node2term( s ) );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return objectSetFiller( s, p, kb.getDisjointClasses( loader.node2term( s ) ) );
}
}
);
registerHandler( CONST, OWL.disjointWith, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isDisjointClass( loader.node2term( s ), loader.node2term( o ) );
}
}
);
registerHandler( VAR, OWL.complementOf, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return kb.getComplements( subj ).iterator();
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getAllClasses();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return true;
}
}
);
registerHandler( VAR, OWL.complementOf, CONST,
new SubjectVarHandler() {
@Override
public Set getSubjects(KnowledgeBase kb, ATermAppl c) {
return kb.getComplements( c );
}
}
);
registerHandler( CONST, OWL.complementOf, VAR,
new ObjectVarHandler() {
@Override
public Set getObjects(KnowledgeBase kb, ATermAppl c) {
return kb.getComplements( c );
}
}
);
registerHandler( CONST, OWL.complementOf, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isComplement( loader.node2term( s ), loader.node2term( o ) );
}
}
);
registerHandler( VAR, RDFS.subPropertyOf, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return new FlattenningIterator( kb.getAllSuperProperties( subj ) );
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getProperties();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return !kb.getProperties().isEmpty();
}
}
);
registerHandler( VAR, RDFS.subPropertyOf, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isProperty( loader.node2term( o ) );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return subjectSetFiller( kb.getAllSubProperties( loader.node2term( o ) ), p, o );
}
}
);
registerHandler( CONST, RDFS.subPropertyOf, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isProperty( loader.node2term( s ) );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return objectSetFiller( s, p, kb.getAllSuperProperties( loader.node2term( s ) ) );
}
}
);
registerHandler( CONST, RDFS.subPropertyOf, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isSubPropertyOf( loader.node2term( s ), loader.node2term( o ) );
}
}
);
registerHandler( VAR, ReasonerVocabulary.directSubPropertyOf, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return new FlattenningIterator( kb.getSuperProperties( subj, true ) );
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getProperties();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return !kb.getProperties().isEmpty();
}
}
);
registerHandler( VAR, ReasonerVocabulary.directSubPropertyOf, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isProperty( loader.node2term( o ) );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return subjectSetFiller( kb.getSubProperties( loader.node2term( o ), true ), p, o );
}
}
);
registerHandler( CONST, ReasonerVocabulary.directSubPropertyOf, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isProperty( loader.node2term( s ) );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return objectSetFiller( s, p, kb.getSuperProperties( loader.node2term( s ), true ) );
}
}
);
registerHandler( CONST, ReasonerVocabulary.directSubPropertyOf, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.getSuperProperties( loader.node2term( s ), true ).contains(
kb.getAllEquivalentProperties( loader.node2term( o ) ) );
}
}
);
registerHandler( VAR, RDFS.domain, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return kb.getDomains( subj ).iterator();
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getProperties();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return !kb.getProperties().isEmpty();
}
}
);
registerHandler( VAR, RDFS.domain, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isProperty( loader.node2term( o ) );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
List props = new ArrayList();
ATermAppl domain = loader.node2term( o );
for( ATermAppl prop : kb.getProperties() ) {
if( kb.getDomains( prop ).contains( domain ) ) {
props.add( prop );
}
}
return subjectFiller( props, p, o );
}
}
);
registerHandler( CONST, RDFS.domain, VAR,
new ObjectVarHandler() {
@Override
public Set getObjects(KnowledgeBase kb, ATermAppl p) {
return kb.getDomains( p );
}
}
);
registerHandler( CONST, RDFS.domain, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.hasDomain( loader.node2term( s ), loader.node2term( o ) );
}
}
);
registerHandler( VAR, RDFS.range, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return kb.getRanges( subj ).iterator();
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getProperties();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return !kb.getProperties().isEmpty();
}
}
);
registerHandler( VAR, RDFS.range, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isProperty( loader.node2term( o ) );
}
@Override
public final ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
List props = new ArrayList();
ATermAppl range = loader.node2term( o );
for( ATermAppl prop : kb.getProperties() ) {
if( kb.getRanges( prop ).contains( range ) ) {
props.add( prop );
}
}
return subjectFiller( props, p, o );
}
}
);
registerHandler( CONST, RDFS.range, VAR,
new ObjectVarHandler() {
@Override
public Set getObjects(KnowledgeBase kb, ATermAppl p) {
return kb.getRanges( p );
}
}
);
registerHandler( CONST, RDFS.range, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.hasRange( loader.node2term( s ), loader.node2term( o ) );
}
}
);
registerHandler( VAR, OWL.equivalentProperty, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return kb.getAllEquivalentProperties( subj ).iterator();
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getProperties();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return !kb.getProperties().isEmpty();
}
}
);
registerHandler( VAR, OWL.equivalentProperty, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isProperty( loader.node2term( o ) );
}
@Override
public ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return subjectFiller( kb.getAllEquivalentProperties( loader.node2term( o ) ), p, o );
}
}
);
registerHandler( CONST, OWL.equivalentProperty, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isProperty( loader.node2term( s ) );
}
@Override
public ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return objectFiller( s, p, kb.getAllEquivalentProperties( loader.node2term( s ) ) );
}
}
);
registerHandler( CONST, OWL.equivalentProperty, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isEquivalentProperty( loader.node2term( s ), loader.node2term( o ) );
}
}
);
registerHandler( VAR, OWL.inverseOf, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return kb.getInverses( subj ).iterator();
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getProperties();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return !kb.getProperties().isEmpty();
}
}
);
registerHandler( VAR, OWL.inverseOf, CONST,
new SubjectVarHandler() {
@Override
public Set getSubjects(KnowledgeBase kb, ATermAppl p) {
return kb.getInverses( p );
}
}
);
registerHandler( CONST, OWL.inverseOf, VAR,
new ObjectVarHandler() {
@Override
public Set getObjects(KnowledgeBase kb, ATermAppl p) {
return kb.getInverses( p );
}
}
);
registerHandler( CONST, OWL.inverseOf, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isInverse( loader.node2term( s ), loader.node2term( o ) );
}
}
);
registerHandler( VAR, OWL2.propertyDisjointWith, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return new FlattenningIterator( kb.getDisjointProperties( subj ) );
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getProperties();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
return kb.getExpressivity().hasDisjointRoles();
}
}
);
registerHandler( VAR, OWL2.propertyDisjointWith, CONST,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return !kb.getDisjointProperties( loader.node2term( o ) ).isEmpty();
}
@Override
public ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return subjectSetFiller( kb.getDisjointProperties( loader.node2term( o ) ), p, o );
}
}
);
registerHandler( CONST, OWL2.propertyDisjointWith, VAR,
new TripleQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return !kb.getDisjointProperties( loader.node2term( s ) ).isEmpty();
}
@Override
public ExtendedIterator find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return objectSetFiller( s, p, kb.getDisjointProperties( loader.node2term( s ) ) );
}
}
);
registerHandler( CONST, OWL2.propertyDisjointWith, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
ATermAppl prop1 = loader.node2term( s );
ATermAppl prop2 = loader.node2term( o );
return ((kb.isObjectProperty( prop1 ) && kb.isObjectProperty( prop2 ))
|| (kb.isDatatypeProperty( prop1 ) && kb.isDatatypeProperty( prop2 )))
&& kb.isDisjointProperty( prop1, prop2 );
}
}
);
registerHandler( VAR, OWL.sameAs, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return kb.getAllSames( subj ).iterator();
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getIndividuals();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return !kb.getIndividuals().isEmpty();
}
}
);
registerHandler( VAR, OWL.sameAs, CONST,
new SubjectVarHandler() {
@Override
public Set getSubjects(KnowledgeBase kb, ATermAppl ind) {
return kb.getAllSames( ind );
}
}
);
registerHandler( CONST, OWL.sameAs, VAR,
new ObjectVarHandler() {
@Override
public Set getObjects(KnowledgeBase kb, ATermAppl ind) {
return kb.getAllSames( ind );
}
}
);
registerHandler( CONST, OWL.sameAs, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isSameAs( loader.node2term( s ), loader.node2term( o ) );
}
}
);
registerHandler( VAR, OWL.differentFrom, VAR,
new SubjectObjectVarHandler() {
@Override
public Iterator getObjects(KnowledgeBase kb, ATermAppl subj) {
return kb.getDifferents( subj ).iterator();
}
@Override
public Collection getSubjects(KnowledgeBase kb) {
return kb.getIndividuals();
}
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return !kb.getIndividuals().isEmpty();
}
}
);
registerHandler( VAR, OWL.differentFrom, CONST,
new SubjectVarHandler() {
@Override
public Set getSubjects(KnowledgeBase kb, ATermAppl ind) {
return kb.getDifferents( ind );
}
}
);
registerHandler( CONST, OWL.differentFrom, VAR,
new ObjectVarHandler() {
@Override
public Set getObjects(KnowledgeBase kb, ATermAppl ind) {
return kb.getDifferents( ind );
}
}
);
registerHandler( CONST, OWL.differentFrom, CONST,
new BooleanQueryHandler() {
@Override
public boolean contains(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
return kb.isDifferentFrom( loader.node2term( s ), loader.node2term( o ) );
}
}
);
}
public static boolean isBuiltin(Node node) {
return BUILTIN_KEYWORDS.contains( node );
}
public static Node normalize(Node node) {
return node == VAR || node.isVariable() ? VAR : isBuiltin( node ) ? node : CONST;
}
public static ExtendedIterator findTriple(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
Node s = normalize( subj );
Node p = normalize( pred );
Node o = normalize( obj );
if( p == VAR && o != VAR && o != CONST ) {
pred = p = RDF.type.asNode();
}
TripleQueryHandler qh = QUERY_HANDLERS.get( Triple.create( s, p, o ) );
if( qh == null ) {
if( log.isLoggable( Level.WARNING ) )
log.warning( "No query handler found for " + subj + " " + pred + " " + obj );
}
return qh == null
? NullIterator.instance()
: qh.find( kb, loader, subj, pred, obj );
}
public static boolean containsTriple(KnowledgeBase kb, GraphLoader loader, Node subj, Node pred, Node obj) {
Node s = normalize( subj );
Node p = normalize( pred );
Node o = normalize( obj );
if( p == VAR && o != VAR && o != CONST ) {
pred = p = RDF.type.asNode();
}
TripleQueryHandler qh = QUERY_HANDLERS.get( Triple.create( s, p, o ) );
if( qh == null ) {
if( log.isLoggable( Level.WARNING ) )
log.warning( "No query handler found for " + subj + " " + pred + " " + obj );
}
return (qh != null) && qh.contains( kb, loader, subj, pred, obj );
}
}
