Examples with Node org.apache.jena.graph.Node used on opensource projects

Example 51 with Node

use of org.apache.jena.graph.Node in project jena by apache.

the class CanonicalizeLiteral method apply.

@Override
public Node apply(Node node) {
    if (!node.isLiteral())
        return node;
    if (!node.getLiteralDatatype().isValid(node.getLiteralLexicalForm()))
        // Invalid lexical form for the datatype - do nothing.
        return node;
    RDFDatatype dt = node.getLiteralDatatype();
    Node n2;
    if (NodeUtils.isLangString(node)) {
        // RDF 1.0, no datatype ; RDF 1.1 : datatype is rdf:langString 
        if (node.getLiteralLanguage().equals(""))
            //n2 = NormalizeValue.dtSimpleLiteral.handle(node, node.getLiteralLexicalForm(), null) ;
            return node;
        else
            n2 = canonicalLangtag(node.getLiteralLexicalForm(), node.getLiteralLanguage());
    } else if (dt == null) {
        // RDF 1.0 / no lang.
        n2 = NormalizeValue.dtSimpleLiteral.handle(node, node.getLiteralLexicalForm(), null);
    } else {
        // Dataype, not rdf:langString (RDF 1.1). 
        DatatypeHandler handler = dispatch.get(dt);
        if (handler == null)
            return node;
        n2 = handler.handle(node, node.getLiteralLexicalForm(), dt);
    }
    if (n2 == null)
        return node;
    return n2;
}

Example 52 with Node

use of org.apache.jena.graph.Node in project jena by apache.

the class RiotLib method createIRIorBNode.

/** Implement <_:....> as a "Node IRI"
     * that is, use the given label as the BNode internal label.
     * Use with care.
     */
public static Node createIRIorBNode(String iri) {
    // Is it a bNode label? i.e. <_:xyz>
    if (isBNodeIRI(iri)) {
        String s = iri.substring(bNodeLabelStart.length());
        Node n = NodeFactory.createBlankNode(s);
        return n;
    }
    return NodeFactory.createURI(iri);
}

Example 53 with Node

use of org.apache.jena.graph.Node in project jena by apache.

the class STriple method readObject.

private void readObject(java.io.ObjectInputStream in) throws IOException {
    TProtocol protocol = TRDF.protocol(in);
    RDF_Term tterm = new RDF_Term();
    Node s = SerializerRDF.read(protocol, tterm);
    Node p = SerializerRDF.read(protocol, tterm);
    Node o = SerializerRDF.read(protocol, tterm);
    triple = Triple.create(s, p, o);
}

Example 54 with Node

use of org.apache.jena.graph.Node in project jena by apache.

the class SinkTripleOutput method send.

@Override
public void send(Triple triple) {
    Node s = triple.getSubject();
    Node p = triple.getPredicate();
    Node o = triple.getObject();
    nodeFmt.format(out, s);
    out.print(" ");
    nodeFmt.format(out, p);
    out.print(" ");
    nodeFmt.format(out, o);
    out.print(" .\n");
}

Example 55 with Node

use of org.apache.jena.graph.Node in project jena by apache.

the class RiotLib method calcWidth.

public static int calcWidth(PrefixMap prefixMap, String baseURI, Collection<Node> nodes, int minWidth, int maxWidth) {
    Node prev = null;
    int nodeMaxWidth = minWidth;
    for (Node n : nodes) {
        if (prev != null && prev.equals(n))
            continue;
        int len = calcWidth(prefixMap, baseURI, n);
        if (len > maxWidth)
            continue;
        if (nodeMaxWidth < len)
            nodeMaxWidth = len;
        prev = n;
    }
    return nodeMaxWidth;
}