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

Example 1 with ElementPathBlock

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

the class UpdateBuilderTest method testInsertAndDeleteWithVar.

@Test
public void testInsertAndDeleteWithVar() {
    UpdateBuilder builder = new UpdateBuilder();
    Var v = Var.alloc("v");
    builder.addInsert(new Quad(g, s, v, o));
    builder.addDelete(new Triple(s, v, o));
    builder.addWhere(null, v, "foo");
    builder.setVar(v, p);
    Update update = builder.build();
    assertTrue(update instanceof UpdateModify);
    UpdateModify um = (UpdateModify) update;
    List<Quad> quads = um.getInsertQuads();
    assertEquals(1, quads.size());
    Quad q = quads.get(0);
    assertEquals(g, q.getGraph());
    assertEquals(s, q.getSubject());
    assertEquals(p, q.getPredicate());
    assertEquals(o, q.getObject());
    quads = um.getDeleteQuads();
    assertEquals(1, quads.size());
    q = quads.get(0);
    assertEquals(Quad.defaultGraphNodeGenerated, q.getGraph());
    assertEquals(s, q.getSubject());
    assertEquals(p, q.getPredicate());
    assertEquals(o, q.getObject());
    Element e = um.getWherePattern();
    assertTrue(e instanceof ElementGroup);
    ElementGroup eg = (ElementGroup) e;
    assertEquals(1, eg.getElements().size());
    ElementPathBlock epb = (ElementPathBlock) eg.getElements().get(0);
    Triple t = epb.getPattern().get(0).asTriple();
    assertEquals(Node.ANY, t.getSubject());
    assertEquals(p, t.getPredicate());
    assertEquals(builder.makeNode("foo"), t.getObject());
}

Example 2 with ElementPathBlock

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

the class WhereHandler method addOptional.

/**
 * Add an optional triple to the where clause
 *
 * @param t The triple path to add.
 * @throws IllegalArgumentException If the triple is not a valid triple for a
 * where clause.
 */
public void addOptional(TriplePath t) throws IllegalArgumentException {
    testTriple(t);
    ElementPathBlock epb = new ElementPathBlock();
    epb.addTriple(t);
    ElementOptional opt = new ElementOptional(epb);
    getClause().addElement(opt);
}

Example 3 with ElementPathBlock

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

the class WhereHandler method addGraph.

/**
 * Add a graph to the where clause.
 *
 * Short hand for graph { s, p, o }
 *
 * @param graph The name of the graph.
 * @param subQuery A triple path to add to the graph.
 */
public void addGraph(Node graph, TriplePath subQuery) {
    ElementPathBlock epb = new ElementPathBlock();
    epb.addTriple(subQuery);
    getClause().addElement(new ElementNamedGraph(graph, epb));
}

Example 4 with ElementPathBlock

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

the class WhereHandlerTest method testAddSubQueryWithVarExpressions.

@Test
public void testAddSubQueryWithVarExpressions() throws ParseException {
    SelectBuilder sb = new SelectBuilder();
    sb.addPrefix("pfx", "uri").addVar("count(*)", "?x").addWhere("<one>", "<two>", "three");
    handler.addSubQuery(sb);
    handler.build();
    Triple t1 = new Triple(NodeFactory.createURI("one"), NodeFactory.createURI("two"), NodeFactory.createLiteral("three"));
    TriplePath tp = new TriplePath(t1);
    ElementPathBlock epb = new ElementPathBlock();
    epb.addTriple(tp);
    Query q = new Query();
    q.addResultVar("x", q.allocAggregate(new AggCount()));
    q.setQuerySelectType();
    q.setQueryPattern(epb);
    ElementSubQuery esq = new ElementSubQuery(q);
    WhereValidator wv = new WhereValidator(esq);
    query.getQueryPattern().visit(wv);
    assertTrue(wv.matching);
}

Example 5 with ElementPathBlock

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

the class WhereHandlerTest method testAddAllOnEmpty.

@Test
public void testAddAllOnEmpty() {
    Query query2 = new Query();
    WhereHandler handler2 = new WhereHandler(query2);
    handler2.addWhere(new TriplePath(new Triple(NodeFactory.createURI("one"), NodeFactory.createURI("two"), NodeFactory.createLiteral("three"))));
    handler.addAll(handler2);
    handler.build();
    Triple t1 = new Triple(NodeFactory.createURI("one"), NodeFactory.createURI("two"), NodeFactory.createLiteral("three"));
    TriplePath tp = new TriplePath(t1);
    ElementPathBlock epb = new ElementPathBlock();
    epb.addTriple(tp);
    WhereValidator wv = new WhereValidator(epb);
    query.getQueryPattern().visit(wv);
    assertTrue(wv.matching);
}