Java Code Examples for org.apache.jena.rdf.model.RDFNode#isAnon()

The following examples show how to use org.apache.jena.rdf.model.RDFNode#isAnon() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: PatternConstraintExecutor.java    From shacl with Apache License 2.0 6 votes vote down vote up 
@Override
public void executeConstraint(Constraint constraint, ValidationEngine engine, Collection<RDFNode> focusNodes) {
	long startTime = System.currentTimeMillis();
	for(RDFNode focusNode : focusNodes) {
		for(RDFNode valueNode : engine.getValueNodes(constraint, focusNode)) {
	        if(valueNode.isAnon()) {
	        	engine.createValidationResult(constraint, focusNode, valueNode, () -> "Blank node cannot match pattern");
	        }
	        else {
		        String str = NodeFunctions.str(valueNode.asNode());
		        if(!pattern.matcher(str).find()) {
		        	engine.createValidationResult(constraint, focusNode, valueNode, () -> "Value does not match pattern \"" + this.patternString + "\"");
		        }
	        }
		}
		engine.checkCanceled();
	}
	addStatistics(constraint, startTime);
}
Example 2
Source File: AbstractLengthConstraintExecutor.java    From shacl with Apache License 2.0 5 votes vote down vote up 
private void validate(Constraint constraint, ValidationEngine engine, String message, int length, RDFNode focusNode, RDFNode valueNode) {
	if(valueNode.isAnon() || 
			(valueNode.isURIResource() && isInvalidLength(valueNode.asNode().getURI().length(), length)) || 
			(valueNode.isLiteral() && isInvalidLength(valueNode.asNode().getLiteralLexicalForm().length(), length))) {
		engine.createValidationResult(constraint, focusNode, valueNode, () -> message);
	}
}
Example 3
Source File: SHFactory.java    From shacl with Apache License 2.0 5 votes vote down vote up 
/**
 * Checks if a given node is a NodeShape.
 * This is just an approximation based on a couple of hard-coded properties.
 * @param node  the node to test
 * @return true if node is a NodeShape
 */
public static boolean isNodeShape(RDFNode node) {
	if(node instanceof Resource) {
		if(JenaUtil.hasIndirectType((Resource)node, SH.NodeShape)) {
			return true;
		}
		else if(node.isAnon() && !((Resource)node).hasProperty(RDF.type)) {
			if(node.getModel().contains(null, SH.node, node)) {
				return true;
			}
		}
	}
	return false;
}
Example 4
Source File: HtmlTriplePatternFragmentWriterImpl.java    From Server.Java with MIT License 4 votes vote down vote up 
/**
 *
 * @param outputStream
 * @param datasource
 * @param fragment
 * @param tpfRequest
 * @throws IOException
 * @throws TemplateException
 */
@Override
public void writeFragment(ServletOutputStream outputStream, IDataSource datasource, ITriplePatternFragment fragment,  ITriplePatternFragmentRequest tpfRequest) throws IOException, TemplateException{
    Map data = new HashMap();
    
    // base.ftl.html
    data.put("assetsPath", "assets/");
    data.put("header", datasource.getTitle());
    data.put("date", new Date());
    
    // fragment.ftl.html
    data.put("datasourceUrl", tpfRequest.getDatasetURL());
    data.put("datasource", datasource);
    
    // Parse controls to template variables
    StmtIterator controls = fragment.getControls();
    while (controls.hasNext()) {
        Statement control = controls.next();
        
        String predicate = control.getPredicate().getURI();
        RDFNode object = control.getObject();
        if (!object.isAnon()) {
            String value = object.isURIResource() ? object.asResource().getURI() : object.asLiteral().getLexicalForm();
            data.put(predicate.replaceFirst(HYDRA, ""), value);
        }
    }
    
    // Add metadata
    data.put("totalEstimate", fragment.getTotalSize());
    data.put("itemsPerPage", fragment.getMaxPageSize());
    
    // Add triples and datasources
    List<Statement> triples = fragment.getTriples().toList();
    data.put("triples", triples);
    data.put("datasources", getDatasources());
    
    // Calculate start and end triple number
    Long start = ((tpfRequest.getPageNumber() - 1) * fragment.getMaxPageSize()) + 1;
    data.put("start", start);
    data.put("end", start + (triples.size() < fragment.getMaxPageSize() ? triples.size() : fragment.getMaxPageSize()));
    
    // Compose query object
    Map query = new HashMap();
    query.put("subject", !tpfRequest.getSubject().isVariable() ? tpfRequest.getSubject().asConstantTerm() : "");
    query.put("predicate", !tpfRequest.getPredicate().isVariable() ? tpfRequest.getPredicate().asConstantTerm() : "");
    query.put("object", !tpfRequest.getObject().isVariable() ? tpfRequest.getObject().asConstantTerm() : "");
    data.put("query", query);
   
    // Get the template (uses cache internally)
    Template temp = datasource instanceof IndexDataSource ? indexTemplate : datasourceTemplate;

    // Merge data-model with template
    temp.process(data, new OutputStreamWriter(outputStream));
}
Example 5
Source File: RdfListUtils.java    From RDFUnit with Apache License 2.0 4 votes vote down vote up 
public static boolean isList(RDFNode node) {
    return node.isAnon() && node.canAs(RDFList.class);
}