Java Code Examples for org.eclipse.rdf4j.model.IRI#getNamespace()
The following examples show how to use
org.eclipse.rdf4j.model.IRI#getNamespace() .
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Example 1
| Source File: TransitivePropertyVisitor.java From rya with Apache License 2.0 | 6 votes |
|
@Override
protected void meetSP(final StatementPattern node) throws Exception {
final StatementPattern sp = node.clone();
final Var predVar = sp.getPredicateVar();
final IRI pred = (IRI) predVar.getValue();
final String predNamespace = pred.getNamespace();
final Var objVar = sp.getObjectVar();
final Var cntxtVar = sp.getContextVar();
if (objVar != null &&
!RDF.NAMESPACE.equals(predNamespace) &&
!SESAME.NAMESPACE.equals(predNamespace) &&
!RDFS.NAMESPACE.equals(predNamespace)
&& !EXPANDED.equals(cntxtVar)) {
final IRI transPropIri = (IRI) predVar.getValue();
if (inferenceEngine.isTransitiveProperty(transPropIri)) {
node.replaceWith(new TransitivePropertySP(sp.getSubjectVar(), sp.getPredicateVar(), sp.getObjectVar(), sp.getContextVar()));
}
}
}
Example 2
| Source File: MemURITest.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
private void compareURIs(String uri) throws Exception {
IRI uriImpl = SimpleValueFactory.getInstance().createIRI(uri);
MemIRI memURI = new MemIRI(this, uriImpl.getNamespace(), uriImpl.getLocalName());
assertEquals("MemURI not equal to URIImpl for: " + uri, uriImpl, memURI);
assertEquals("MemURI has different hash code than URIImpl for: " + uri, uriImpl.hashCode(), memURI.hashCode());
}
Example 3
| Source File: BinaryQueryResultWriter.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
private void writeQName(IRI uri) throws IOException {
// Check if the URI has a new namespace
String namespace = uri.getNamespace();
Integer nsID = namespaceTable.get(namespace);
if (nsID == null) {
// Generate a ID for this new namespace
nsID = writeNamespace(namespace);
}
out.writeByte(QNAME_RECORD_MARKER);
out.writeInt(nsID.intValue());
writeString(uri.getLocalName());
}
Example 4
| Source File: BinaryQueryResultWriter.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
private void writeLiteral(Literal literal) throws IOException {
String label = literal.getLabel();
IRI datatype = literal.getDatatype();
int marker = PLAIN_LITERAL_RECORD_MARKER;
if (Literals.isLanguageLiteral(literal)) {
marker = LANG_LITERAL_RECORD_MARKER;
} else {
String namespace = datatype.getNamespace();
if (!namespaceTable.containsKey(namespace)) {
// Assign an ID to this new namespace
writeNamespace(namespace);
}
marker = DATATYPE_LITERAL_RECORD_MARKER;
}
out.writeByte(marker);
writeString(label);
if (Literals.isLanguageLiteral(literal)) {
writeString(literal.getLanguage().get());
} else {
writeQName(datatype);
}
}
Example 5
| Source File: InverseOfVisitor.java From rya with Apache License 2.0 | 5 votes |
|
@Override
protected void meetSP(StatementPattern node) throws Exception {
StatementPattern sp = node.clone();
final Var predVar = sp.getPredicateVar();
IRI pred = (IRI) predVar.getValue();
String predNamespace = pred.getNamespace();
final Var objVar = sp.getObjectVar();
final Var cntxtVar = sp.getContextVar();
if (objVar != null &&
!RDF.NAMESPACE.equals(predNamespace) &&
!SESAME.NAMESPACE.equals(predNamespace) &&
!RDFS.NAMESPACE.equals(predNamespace)
&& !EXPANDED.equals(cntxtVar)) {
/**
*
* { ?a ?pred ?b .}\n" +
" UNION " +
" { ?b ?pred ?a }
*/
IRI predIri = (IRI) predVar.getValue();
IRI invPropIri = inferenceEngine.findInverseOf(predIri);
if (invPropIri != null) {
Var subjVar = sp.getSubjectVar();
Union union = new InferUnion();
union.setLeftArg(sp);
union.setRightArg(new StatementPattern(objVar, new Var(predVar.getName(), invPropIri), subjVar, cntxtVar));
node.replaceWith(union);
}
}
}
Example 6
| Source File: SymmetricPropertyVisitor.java From rya with Apache License 2.0 | 5 votes |
|
@Override
protected void meetSP(StatementPattern node) throws Exception {
StatementPattern sp = node.clone();
final Var predVar = sp.getPredicateVar();
IRI pred = (IRI) predVar.getValue();
String predNamespace = pred.getNamespace();
final Var objVar = sp.getObjectVar();
final Var cntxtVar = sp.getContextVar();
if (objVar != null &&
!RDF.NAMESPACE.equals(predNamespace) &&
!SESAME.NAMESPACE.equals(predNamespace) &&
!RDFS.NAMESPACE.equals(predNamespace)
&& !EXPANDED.equals(cntxtVar)) {
/**
*
* { ?a ?pred ?b .}\n" +
" UNION " +
" { ?b ?pred ?a }
*/
IRI symmPropIri = (IRI) predVar.getValue();
if(inferenceEngine.isSymmetricProperty(symmPropIri)) {
Var subjVar = sp.getSubjectVar();
Union union = new InferUnion();
union.setLeftArg(sp);
union.setRightArg(new StatementPattern(objVar, predVar, subjVar, cntxtVar));
node.replaceWith(union);
}
}
}
Example 7
| Source File: SubPropertyOfVisitor.java From rya with Apache License 2.0 | 4 votes |
|
@Override
protected void meetSP(final StatementPattern node) throws Exception {
final StatementPattern sp = node.clone();
final Var predVar = sp.getPredicateVar();
final IRI pred = (IRI) predVar.getValue();
final String predNamespace = pred.getNamespace();
final Var objVar = sp.getObjectVar();
final Var cntxtVar = sp.getContextVar();
if (objVar != null &&
!RDF.NAMESPACE.equals(predNamespace) &&
!SESAME.NAMESPACE.equals(predNamespace) &&
!RDFS.NAMESPACE.equals(predNamespace)
&& !EXPANDED.equals(cntxtVar)) {
/**
*
* { ?subProp rdfs:subPropertyOf ub:worksFor . ?y ?subProp <http://www.Department0.University0.edu> }\n" +
" UNION " +
" { ?y ub:worksFor <http://www.Department0.University0.edu> }
*/
// String s = UUID.randomUUID().toString();
// Var subPropVar = new Var(s);
// StatementPattern subPropOf = new StatementPattern(subPropVar, new Var("c-" + s, SESAME.DIRECTSUBPROPERTYOF), predVar, EXPANDED);
// StatementPattern subPropOf2 = new StatementPattern(sp.getSubjectVar(), subPropVar, objVar, EXPANDED);
// InferJoin join = new InferJoin(subPropOf, subPropOf2);
// join.getProperties().put(InferConstants.INFERRED, InferConstants.TRUE);
// node.replaceWith(join);
// Collection<URI> parents = inferenceEngine.findParents(inferenceEngine.subPropertyOfGraph, (URI) predVar.getValue());
// if (parents != null && parents.size() > 0) {
// StatementPatterns statementPatterns = new StatementPatterns();
// statementPatterns.patterns.add(node);
// Var subjVar = node.getSubjectVar();
// for (IRI iri : parents) {
// statementPatterns.patterns.add(new StatementPattern(subjVar, new Var(predVar.getName(), iri), objVar));
// }
// node.replaceWith(statementPatterns);
// }
// if (parents != null && parents.size() > 0) {
// VarCollection vc = new VarCollection();
// vc.setName(predVar.getName());
// vc.values.add(predVar);
// for (IRI iri : parents) {
// vc.values.add(new Var(predVar.getName(), iri));
// }
// Var subjVar = node.getSubjectVar();
// node.replaceWith(new StatementPattern(subjVar, vc, objVar, node.getContextVar()));
// }
final IRI subprop_iri = (IRI) predVar.getValue();
final Set<IRI> parents = InferenceEngine.findParents(inferenceEngine.getSubPropertyOfGraph(), subprop_iri);
if (parents != null && parents.size() > 0) {
final String s = UUID.randomUUID().toString();
final Var typeVar = new Var(s);
final FixedStatementPattern fsp = new FixedStatementPattern(typeVar, new Var("c-" + s, RDFS.SUBPROPERTYOF), predVar, cntxtVar);
// fsp.statements.add(new NullableStatementImpl(subprop_uri, RDFS.SUBPROPERTYOF, subprop_uri));
//add self
parents.add(subprop_iri);
for (final IRI u : parents) {
fsp.statements.add(new NullableStatementImpl(u, RDFS.SUBPROPERTYOF, subprop_iri));
}
final StatementPattern rdfType = new DoNotExpandSP(sp.getSubjectVar(), typeVar, sp.getObjectVar(), cntxtVar);
final InferJoin join = new InferJoin(fsp, rdfType);
join.getProperties().put(InferConstants.INFERRED, InferConstants.TRUE);
node.replaceWith(join);
}
}
}
