Examples with ElementPathBlock org.apache.jena.sparql.syntax.ElementPathBlock used on opensource projects

Example 76 with ElementPathBlock

use of org.apache.jena.sparql.syntax.ElementPathBlock in project jena by apache.

the class ARQParserBase method createQueryPattern.

protected ElementGroup createQueryPattern(Template t) {
    ElementGroup elg = new ElementGroup();
    Map<Node, BasicPattern> graphs = t.getGraphPattern();
    for (Node n : graphs.keySet()) {
        Element el = new ElementPathBlock(graphs.get(n));
        if (!Quad.defaultGraphNodeGenerated.equals(n)) {
            ElementGroup e = new ElementGroup();
            e.addElement(el);
            el = new ElementNamedGraph(n, e);
        }
        elg.addElement(el);
    }
    return elg;
}

Example 77 with ElementPathBlock

use of org.apache.jena.sparql.syntax.ElementPathBlock in project jena by apache.

the class WhereHandler method addWhere.

/**
 * Add the triple path to the where clause
 *
 * @param t The triple path to add.
 * @throws IllegalArgumentException If the triple path is not a valid triple
 * path for a where clause.
 */
public void addWhere(TriplePath t) throws IllegalArgumentException {
    testTriple(t);
    ElementGroup eg = getClause();
    List<Element> lst = eg.getElements();
    if (lst.isEmpty()) {
        ElementPathBlock epb = new ElementPathBlock();
        epb.addTriple(t);
        eg.addElement(epb);
    } else {
        Element e = lst.get(lst.size() - 1);
        if (e instanceof ElementTriplesBlock && t.isTriple()) {
            ElementTriplesBlock etb = (ElementTriplesBlock) e;
            etb.addTriple(t.asTriple());
        } else if (e instanceof ElementPathBlock) {
            ElementPathBlock epb = (ElementPathBlock) e;
            epb.addTriple(t);
        } else {
            ElementPathBlock etb = new ElementPathBlock();
            etb.addTriple(t);
            eg.addElement(etb);
        }
    }
}

Example 78 with ElementPathBlock

use of org.apache.jena.sparql.syntax.ElementPathBlock in project jena by apache.

the class AskBuilderTest method testList.

@Test
public void testList() {
    builder.addWhere(builder.list("<one>", "?two", "'three'"), "<foo>", "<bar>");
    Query query = builder.build();
    Node one = NodeFactory.createURI("one");
    Node two = Var.alloc("two").asNode();
    Node three = NodeFactory.createLiteral("three");
    Node foo = NodeFactory.createURI("foo");
    Node bar = NodeFactory.createURI("bar");
    ElementPathBlock epb = new ElementPathBlock();
    Node firstObject = NodeFactory.createBlankNode();
    Node secondObject = NodeFactory.createBlankNode();
    Node thirdObject = NodeFactory.createBlankNode();
    epb.addTriplePath(new TriplePath(new Triple(firstObject, RDF.first.asNode(), one)));
    epb.addTriplePath(new TriplePath(new Triple(firstObject, RDF.rest.asNode(), secondObject)));
    epb.addTriplePath(new TriplePath(new Triple(secondObject, RDF.first.asNode(), two)));
    epb.addTriplePath(new TriplePath(new Triple(secondObject, RDF.rest.asNode(), thirdObject)));
    epb.addTriplePath(new TriplePath(new Triple(thirdObject, RDF.first.asNode(), three)));
    epb.addTriplePath(new TriplePath(new Triple(thirdObject, RDF.rest.asNode(), RDF.nil.asNode())));
    epb.addTriplePath(new TriplePath(new Triple(firstObject, foo, bar)));
    WhereValidator visitor = new WhereValidator(epb);
    query.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
}