Java Code Examples for org.apache.jena.graph.Graph#find()
The following examples show how to use
org.apache.jena.graph.Graph#find() .
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Example 1
| Source File: LangTurtleStarTest.java From RDFstarTools with Apache License 2.0 | 6 votes |
|
@Test
public void stringParse5() {
final String x = "<<<s> <p> <o>>> <p2> <o2> , <o3> .";
final Graph g = RDFStarUtils.createGraphFromTurtleStarSnippet(x);
assertEquals( 2, g.size() );
final Iterator<Triple> it = g.find();
final Triple t1 = it.next();
assertTrue( t1.getSubject() instanceof Node_Triple );
assertFalse( t1.getPredicate() instanceof Node_Triple );
assertFalse( t1.getObject() instanceof Node_Triple );
final Triple t2 = it.next();
assertTrue( t2.getSubject() instanceof Node_Triple );
assertFalse( t2.getPredicate() instanceof Node_Triple );
assertFalse( t2.getObject() instanceof Node_Triple );
final Triple et1 = ( (Node_Triple) t1.getSubject() ).get();
final Triple et2 = ( (Node_Triple) t2.getSubject() ).get();
assertTrue( et1 == et2 );
}
Example 2
| Source File: ClassPropertyMetadata.java From shacl with Apache License 2.0 | 6 votes |
|
ClassPropertyMetadata(Node classNode, Node predicate, boolean inverse, Graph graph) {
this.inverse = inverse;
this.predicate = predicate;
// Init from SHACL shapes
if(SHACLUtil.exists(graph)) {
if(JenaNodeUtil.isInstanceOf(classNode, SH.Shape.asNode(), graph)) {
initFromShape(classNode, graph);
}
ExtendedIterator<Triple> it = graph.find(null, SH.targetClass.asNode(), classNode);
while(it.hasNext()) {
Node shape = it.next().getSubject();
initFromShape(shape, graph);
}
}
if(!inverse) {
for(Plugin plugin : plugins) {
plugin.init(this, classNode, graph);
}
}
}
Example 3
| Source File: ClassMetadata.java From shacl with Apache License 2.0 | 6 votes |
|
public synchronized Set<PathMetadata> getGroupPaths(Node group, Graph graph) {
if(groupPaths == null) {
groupPaths = new HashMap<>();
if(JenaNodeUtil.isInstanceOf(classNode, SH.Shape.asNode(), graph)) {
addGroupProperties(classNode, graph, SH.parameter.asNode());
addGroupProperties(classNode, graph, SH.property.asNode());
}
ExtendedIterator<Triple> it = graph.find(null, SH.targetClass.asNode(), classNode);
while(it.hasNext()) {
Node shape = it.next().getSubject();
addGroupProperties(shape, graph, SH.parameter.asNode());
addGroupProperties(shape, graph, SH.property.asNode());
}
}
return groupPaths.get(group);
}
Example 4
| Source File: localname.java From xcurator with Apache License 2.0 | 6 votes |
|
private QueryIterator execAllNodes(Var subjVar, Node nodeLocalname, Binding input, ExecutionContext execCxt)
{
if ( ! nodeLocalname.isVariable() )
{
if ( ! nodeLocalname.isLiteral() )
// Not a variable, not a literal=> can't match
return QueryIterNullIterator.create(execCxt) ;
if( ! NodeUtils.isSimpleString(nodeLocalname) )
return QueryIterNullIterator.create(execCxt) ;
}
//Set bindings = new HashSet() ; // Use a Set if you want unique results.
List<Binding> bindings = new ArrayList<Binding>() ; // Use a list if you want counting results.
Graph graph = execCxt.getActiveGraph() ;
ExtendedIterator<Triple>iter = graph.find(Node.ANY, Node.ANY, Node.ANY) ;
for ( ; iter.hasNext() ; )
{
Triple t = iter.next() ;
slot(bindings, input, t.getSubject(), subjVar, nodeLocalname) ;
slot(bindings, input, t.getPredicate(), subjVar, nodeLocalname) ;
slot(bindings, input, t.getObject(), subjVar, nodeLocalname) ;
}
return new QueryIterPlainWrapper(bindings.iterator(), execCxt) ;
}
Example 5
| Source File: LangTurtleStarTest.java From RDFstarTools with Apache License 2.0 | 6 votes |
|
@Test
public void stringParse7() {
final String x = "<s2> <p2> <o2> , <<<s> <p> <o>>> .";
final Graph g = RDFStarUtils.createGraphFromTurtleStarSnippet(x);
assertEquals( 2, g.size() );
final Iterator<Triple> it = g.find();
final Triple t1 = it.next();
assertFalse( t1.getSubject() instanceof Node_Triple );
assertFalse( t1.getPredicate() instanceof Node_Triple );
final Triple t2 = it.next();
assertFalse( t2.getSubject() instanceof Node_Triple );
assertFalse( t2.getPredicate() instanceof Node_Triple );
if ( t1.getObject() instanceof Node_Triple )
assertFalse( t2.getObject() instanceof Node_Triple );
else
assertTrue( t2.getObject() instanceof Node_Triple );
}
Example 6
| Source File: LangTurtleStarTest.java From RDFstarTools with Apache License 2.0 | 6 votes |
|
@Test
public void stringParse6() {
final String x = "<<<s> <p> <o>>> <p2> <o2> ; <p3> <o3> .";
final Graph g = RDFStarUtils.createGraphFromTurtleStarSnippet(x);
assertEquals( 2, g.size() );
final Iterator<Triple> it = g.find();
final Triple t1 = it.next();
assertTrue( t1.getSubject() instanceof Node_Triple );
assertFalse( t1.getPredicate() instanceof Node_Triple );
assertFalse( t1.getObject() instanceof Node_Triple );
final Triple t2 = it.next();
assertTrue( t2.getSubject() instanceof Node_Triple );
assertFalse( t2.getPredicate() instanceof Node_Triple );
assertFalse( t2.getObject() instanceof Node_Triple );
final Triple et1 = ( (Node_Triple) t1.getSubject() ).get();
final Triple et2 = ( (Node_Triple) t2.getSubject() ).get();
assertTrue( et1 == et2 );
}
Example 7
| Source File: QueryIterTripleStarPattern.java From RDFstarTools with Apache License 2.0 | 6 votes |
|
public TripleMapper( Binding binding, Triple tp, ExecutionContext cxt )
{
super(cxt) ;
this.s = ExtendedSubstitute.substitute( tp.getSubject(), binding );
this.p = ExtendedSubstitute.substitute( tp.getPredicate(), binding );
this.o = ExtendedSubstitute.substitute( tp.getObject(), binding );
this.sIsTripleWithVars = isTripleWithVars(s);
this.oIsTripleWithVars = isTripleWithVars(o);
this.binding = binding;
final Node s2 = sIsTripleWithVars ? Node.ANY : convertToBeUsedForFind(s);
final Node p2 = convertToBeUsedForFind(p);
final Node o2 = oIsTripleWithVars ? Node.ANY : convertToBeUsedForFind(o);
final Graph graph = cxt.getActiveGraph();
this.graphIter = graph.find(s2, p2, o2);
}
Example 8
| Source File: RDFStar2RDFTest.java From RDFstarTools with Apache License 2.0 | 5 votes |
|
protected void verifyNoNesting(Graph g)
{
final Iterator<Triple> iter = g.find();
while (iter.hasNext()) {
final Triple t = iter.next();
assertFalse( t.getSubject() instanceof Node_Triple );
assertFalse( t.getPredicate() instanceof Node_Triple );
assertFalse( t.getObject() instanceof Node_Triple );
}
}
Example 9
| Source File: EntityIterator.java From Stargraph with MIT License | 5 votes |
|
private Iterator<Node> createIterator() {
Model model = core.getGraphModel();
Graph g = model.getGraph();
ExtendedIterator<Triple> exIt = g.find(Node.ANY, null, null);
ExtendedIterator<Node> subjIt = exIt.mapWith(Triple::getSubject);
exIt = g.find(null, null, Node.ANY);
ExtendedIterator<Node> objIt = exIt.mapWith(Triple::getObject);
return Iterators.concat(subjIt, objIt);
}
Example 10
| Source File: JenaNodeUtil.java From shacl with Apache License 2.0 | 5 votes |
|
public static Node getObject(Node subject, Node predicate, Graph graph) {
ExtendedIterator<Triple> it = graph.find(subject, predicate, Node.ANY);
try {
return it.hasNext()
? it.next().getObject()
: null;
} finally {
it.close();
}
}
Example 11
| Source File: JenaNodeUtil.java From shacl with Apache License 2.0 | 5 votes |
|
public static List<Node> getSubjects(Node predicate, Node object, Graph graph) {
List<Node> results = new LinkedList<>();
ExtendedIterator<Triple> it = graph.find(Node.ANY, predicate, object);
while(it.hasNext()) {
results.add(it.next().getSubject());
}
return results;
}
Example 12
| Source File: ClassMetadata.java From shacl with Apache License 2.0 | 5 votes |
|
private void addGroupProperties(Node nodeShape, Graph graph, Node systemPredicate) {
ExtendedIterator<Triple> it = graph.find(nodeShape, systemPredicate, Node.ANY);
while(it.hasNext()) {
Node propertyShape = it.next().getObject();
if(!graph.contains(propertyShape, SH.deactivated.asNode(), JenaDatatypes.TRUE.asNode())) {
Node group = JenaNodeUtil.getObject(propertyShape, SH.group.asNode(), graph);
if(group != null) {
Node path = JenaNodeUtil.getObject(propertyShape, SH.path.asNode(), graph);
if(path != null) {
Set<PathMetadata> paths = groupPaths.get(group);
if(paths == null) {
paths = new HashSet<>();
groupPaths.put(group, paths);
}
if(path.isURI()) {
paths.add(new PathMetadata(path, false));
}
else {
Node inverse = JenaNodeUtil.getObject(path, SH.inversePath.asNode(), graph);
if(inverse != null && inverse.isURI()) {
paths.add(new PathMetadata(inverse, true));
}
}
}
}
}
}
}
Example 13
| Source File: ClassMetadata.java From shacl with Apache License 2.0 | 5 votes |
|
public synchronized Iterable<ClassMetadata> getSuperClasses(Graph graph) {
if(superClasses == null) {
superClasses = new LinkedList<>();
ExtendedIterator<Triple> it = graph.find(classNode, RDFS.subClassOf.asNode(), Node.ANY);
while(it.hasNext()) {
Node superClass = it.next().getObject();
superClasses.add(OntologyOptimizations.get().getClassMetadata(superClass, graph, graphKey));
}
}
return superClasses;
}
Example 14
| Source File: RDFStar2RDFTest.java From RDFstarTools with Apache License 2.0 | 4 votes |
|
@Test
public void nestedSubject()
{
final String filename = "nestedSubject.ttls";
final Graph g = convertAndLoadIntoGraph(filename);
assertEquals( 6, g.size() );
verifyNoNesting(g);
int cntTypeStmt = 0;
int cntSubjectStmt = 0;
int cntPredicateStmt = 0;
int cntObjectStmt = 0;
int cntReifiedStmt = 0;
int cntMetaStmt = 0;
final Iterator<Triple> it = g.find();
while ( it.hasNext() )
{
final Triple t = it.next();
final Node p = t.getPredicate();
final Node o = t.getObject();
if ( p.equals(RDF.type.asNode()) && o.equals(RDF.Statement.asNode()) )
cntTypeStmt++;
else if ( p.equals(RDF.subject.asNode()) )
cntSubjectStmt++;
else if ( p.equals(RDF.predicate.asNode()) && o.equals(DCTerms.creator.asNode()) )
cntPredicateStmt++;
else if ( p.equals(RDF.object.asNode()) )
cntObjectStmt++;
else if ( p.equals(DCTerms.creator.asNode()) )
cntReifiedStmt++;
else if ( p.equals(DCTerms.source.asNode()) )
cntMetaStmt++;
}
assertEquals( 1, cntTypeStmt );
assertEquals( 1, cntSubjectStmt );
assertEquals( 1, cntPredicateStmt );
assertEquals( 1, cntObjectStmt );
assertEquals( 1, cntReifiedStmt );
assertEquals( 1, cntMetaStmt );
}
Example 15
| Source File: RDFStar2RDFTest.java From RDFstarTools with Apache License 2.0 | 4 votes |
|
@Test
public void nestedObject()
{
final String filename = "nestedObject.ttls";
final Graph g = convertAndLoadIntoGraph(filename);
assertEquals( 6, g.size() );
verifyNoNesting(g);
int cntTypeStmt = 0;
int cntSubjectStmt = 0;
int cntPredicateStmt = 0;
int cntObjectStmt = 0;
int cntReifiedStmt = 0;
int cntMetaStmt = 0;
final Iterator<Triple> it = g.find();
while ( it.hasNext() )
{
final Triple t = it.next();
final Node p = t.getPredicate();
final Node o = t.getObject();
if ( p.equals(RDF.type.asNode()) && o.equals(RDF.Statement.asNode()) )
cntTypeStmt++;
else if ( p.equals(RDF.subject.asNode()) )
cntSubjectStmt++;
else if ( p.equals(RDF.predicate.asNode()) && o.equals(DCTerms.creator.asNode()) )
cntPredicateStmt++;
else if ( p.equals(RDF.object.asNode()) )
cntObjectStmt++;
else if ( p.equals(DCTerms.creator.asNode()) )
cntReifiedStmt++;
else if ( p.equals(DCTerms.source.asNode()) )
cntMetaStmt++;
}
assertEquals( 1, cntTypeStmt );
assertEquals( 1, cntSubjectStmt );
assertEquals( 1, cntPredicateStmt );
assertEquals( 1, cntObjectStmt );
assertEquals( 1, cntReifiedStmt );
assertEquals( 1, cntMetaStmt );
}
Example 16
| Source File: RDFStar2RDFTest.java From RDFstarTools with Apache License 2.0 | 4 votes |
|
@Test
public void nestedSubjectAndObject()
{
final String filename = "nestedSubjectAndObject.ttls";
final Graph g = convertAndLoadIntoGraph(filename);
assertEquals( 11, g.size() );
verifyNoNesting(g);
int cntTypeStmt = 0;
int cntSubjectStmt = 0;
int cntPredicateStmt1 = 0;
int cntPredicateStmt2 = 0;
int cntObjectStmt = 0;
int cntReifiedStmt1 = 0;
int cntReifiedStmt2 = 0;
int cntMetaStmt = 0;
final Iterator<Triple> it = g.find();
while ( it.hasNext() )
{
final Triple t = it.next();
final Node p = t.getPredicate();
final Node o = t.getObject();
if ( p.equals(RDF.type.asNode()) && o.equals(RDF.Statement.asNode()) )
cntTypeStmt++;
else if ( p.equals(RDF.subject.asNode()) )
cntSubjectStmt++;
else if ( p.equals(RDF.predicate.asNode()) && o.equals(DCTerms.creator.asNode()) )
cntPredicateStmt1++;
else if ( p.equals(RDF.predicate.asNode()) && o.equals(DCTerms.created.asNode()) )
cntPredicateStmt2++;
else if ( p.equals(RDF.object.asNode()) )
cntObjectStmt++;
else if ( p.equals(DCTerms.creator.asNode()) )
cntReifiedStmt1++;
else if ( p.equals(DCTerms.created.asNode()) )
cntReifiedStmt2++;
else if ( p.equals(DCTerms.requires.asNode()) )
cntMetaStmt++;
}
assertEquals( 2, cntTypeStmt );
assertEquals( 2, cntSubjectStmt );
assertEquals( 1, cntPredicateStmt1 );
assertEquals( 1, cntPredicateStmt2 );
assertEquals( 2, cntObjectStmt );
assertEquals( 1, cntReifiedStmt1 );
assertEquals( 1, cntReifiedStmt2 );
assertEquals( 1, cntMetaStmt );
}
Example 17
| Source File: RDFStar2RDFTest.java From RDFstarTools with Apache License 2.0 | 4 votes |
|
@Test
public void doubleNestedSubject()
{
final String filename = "doubleNestedSubject.ttls";
final Graph g = convertAndLoadIntoGraph(filename);
assertEquals( 11, g.size() );
verifyNoNesting(g);
int cntTypeStmt = 0;
int cntSubjectStmt = 0;
int cntPredicateStmt1 = 0;
int cntPredicateStmt2 = 0;
int cntObjectStmt = 0;
int cntReifiedStmt1 = 0;
int cntReifiedStmt2 = 0;
int cntMetaStmt = 0;
final Iterator<Triple> it = g.find();
while ( it.hasNext() )
{
final Triple t = it.next();
final Node p = t.getPredicate();
final Node o = t.getObject();
if ( p.equals(RDF.type.asNode()) && o.equals(RDF.Statement.asNode()) )
cntTypeStmt++;
else if ( p.equals(RDF.subject.asNode()) )
cntSubjectStmt++;
else if ( p.equals(RDF.predicate.asNode()) && o.equals(FOAF.knows.asNode()) )
cntPredicateStmt1++;
else if ( p.equals(RDF.predicate.asNode()) && o.equals(DCTerms.created.asNode()) )
cntPredicateStmt2++;
else if ( p.equals(RDF.object.asNode()) )
cntObjectStmt++;
else if ( p.equals(FOAF.knows.asNode()) )
cntReifiedStmt1++;
else if ( p.equals(DCTerms.created.asNode()) )
cntReifiedStmt2++;
else if ( p.equals(DCTerms.source.asNode()) )
cntMetaStmt++;
}
assertEquals( 2, cntTypeStmt );
assertEquals( 2, cntSubjectStmt );
assertEquals( 1, cntPredicateStmt1 );
assertEquals( 1, cntPredicateStmt2 );
assertEquals( 2, cntObjectStmt );
assertEquals( 1, cntReifiedStmt1 );
assertEquals( 1, cntReifiedStmt2 );
assertEquals( 1, cntMetaStmt );
}
Example 18
| Source File: RDFStar2RDFTest.java From RDFstarTools with Apache License 2.0 | 4 votes |
|
@Test
public void doubleNestedObject()
{
final String filename = "doubleNestedObject.ttls";
final Graph g = convertAndLoadIntoGraph(filename);
assertEquals( 11, g.size() );
verifyNoNesting(g);
int cntTypeStmt = 0;
int cntSubjectStmt = 0;
int cntPredicateStmt1 = 0;
int cntPredicateStmt2 = 0;
int cntObjectStmt = 0;
int cntReifiedStmt1 = 0;
int cntReifiedStmt2 = 0;
int cntMetaStmt = 0;
final Iterator<Triple> it = g.find();
while ( it.hasNext() )
{
final Triple t = it.next();
final Node s = t.getSubject();
final Node p = t.getPredicate();
final Node o = t.getObject();
if ( p.equals(RDF.type.asNode()) && o.equals(RDF.Statement.asNode()) )
cntTypeStmt++;
else if ( p.equals(RDF.subject.asNode()) )
cntSubjectStmt++;
else if ( p.equals(RDF.predicate.asNode()) && o.equals(FOAF.knows.asNode()) )
cntPredicateStmt1++;
else if ( p.equals(RDF.predicate.asNode()) && o.equals(DCTerms.created.asNode()) )
cntPredicateStmt2++;
else if ( p.equals(RDF.object.asNode()) )
cntObjectStmt++;
else if ( p.equals(FOAF.knows.asNode()) && s.getURI().contains("alice") )
cntReifiedStmt1++;
else if ( p.equals(DCTerms.created.asNode()) )
cntReifiedStmt2++;
else if ( p.equals(FOAF.knows.asNode()) )
cntMetaStmt++;
}
assertEquals( 2, cntTypeStmt );
assertEquals( 2, cntSubjectStmt );
assertEquals( 1, cntPredicateStmt1 );
assertEquals( 1, cntPredicateStmt2 );
assertEquals( 2, cntObjectStmt );
assertEquals( 1, cntReifiedStmt1 );
assertEquals( 1, cntReifiedStmt2 );
assertEquals( 1, cntMetaStmt );
}
Example 19
| Source File: ClassPropertyMetadata.java From shacl with Apache License 2.0 | 4 votes |
|
private void initFromShape(Node shape, Node systemPredicate, Graph graph) {
ExtendedIterator<Triple> it = graph.find(shape, systemPredicate, Node.ANY);
while(it.hasNext()) {
Node propertyShape = it.next().getObject();
if(!propertyShape.isLiteral()) {
if(hasMatchingPath(propertyShape, graph)) {
if(!graph.contains(propertyShape, SH.deactivated.asNode(), JenaDatatypes.TRUE.asNode())) {
if(description == null) {
description = JenaNodeUtil.getObject(propertyShape, SH.description.asNode(), graph);
}
if(editWidget == null) {
editWidget = JenaNodeUtil.getObject(propertyShape, TOSH.editWidget.asNode(), graph);
}
if(localRange == null) {
if(inverse) {
// Maybe: support inverse ranges
}
else {
localRange = SHACLUtil.walkPropertyShapesHelper(propertyShape, graph);
}
}
if(maxCount == null) {
Node maxCountNode = JenaNodeUtil.getObject(propertyShape, SH.maxCount.asNode(), graph);
if(maxCountNode != null && maxCountNode.isLiteral()) {
Object value = maxCountNode.getLiteralValue();
if(value instanceof Number) {
maxCount = ((Number) value).intValue();
}
}
}
if(name == null) {
name = JenaNodeUtil.getObject(propertyShape, SH.name.asNode(), graph);
}
if(order == null) {
order = JenaNodeUtil.getObject(propertyShape, SH.order.asNode(), graph);
}
if(viewWidget == null) {
viewWidget = JenaNodeUtil.getObject(propertyShape, TOSH.viewWidget.asNode(), graph);
}
}
}
}
}
}
Example 20
| Source File: ExRIOT_5.java From xcurator with Apache License 2.0 | 4 votes |
|
private void read(Item item, String baseURI, ContentType ct, StreamRDF output, Context context) {
Graph graph = BuilderGraph.buildGraph(item) ;
Iterator<Triple> iter = graph.find(null, null, null) ;
for ( ; iter.hasNext() ; )
output.triple(iter.next()) ;
}
