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

Example 1 with ElementUnion

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

the class ElementRewriter method visit.

@Override
public void visit(ElementUnion el) {
    ElementUnion retval = new ElementUnion();
    for (Element e : el.getElements()) {
        e.visit(this);
        retval.addElement(getResult());
    }
    push(retval);
}

Example 2 with ElementUnion

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

the class WhereHandlerTest method testSetVarsInUnion.

@Test
public void testSetVarsInUnion() {
    Var v = Var.alloc("v");
    SelectBuilder sb = new SelectBuilder();
    sb.addPrefix("pfx", "uri").addWhere("<one>", "<two>", v);
    handler.addUnion(sb);
    SelectBuilder sb2 = new SelectBuilder().addWhere("<uno>", "<dos>", "<tres>");
    handler.addUnion(sb2);
    handler.build();
    Node one = NodeFactory.createURI("one");
    Node two = NodeFactory.createURI("two");
    Node three = NodeFactory.createURI("three");
    Node uno = NodeFactory.createURI("uno");
    Node dos = NodeFactory.createURI("dos");
    Node tres = NodeFactory.createURI("tres");
    ElementUnion union = new ElementUnion();
    ElementPathBlock epb = new ElementPathBlock();
    Triple t = new Triple(one, two, v.asNode());
    epb.addTriple(t);
    union.addElement(epb);
    ElementPathBlock epb2 = new ElementPathBlock();
    t = new Triple(uno, dos, tres);
    epb2.addTriple(t);
    union.addElement(epb2);
    WhereValidator visitor = new WhereValidator(union);
    handler.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
    Map<Var, Node> values = new HashMap<>();
    values.put(v, three);
    handler.setVars(values);
    handler.build();
    union = new ElementUnion();
    epb = new ElementPathBlock();
    t = new Triple(one, two, three);
    epb.addTriple(t);
    union.addElement(epb);
    epb2 = new ElementPathBlock();
    t = new Triple(uno, dos, tres);
    epb2.addTriple(t);
    union.addElement(epb2);
    visitor = new WhereValidator(union);
    handler.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
}

Example 3 with ElementUnion

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

the class WhereClauseTest method testSetVarsInUnion_Node_Variable.

@ContractTest
public void testSetVarsInUnion_Node_Variable() {
    Node v = NodeFactory.createVariable("v");
    SelectBuilder sb1 = new SelectBuilder().addPrefix("pfx", "uri").addWhere("<one>", "<two>", v);
    WhereClause<?> whereClause = getProducer().newInstance();
    whereClause.addUnion(sb1);
    SelectBuilder sb2 = new SelectBuilder().addWhere("<uno>", "<dos>", "<tres>");
    AbstractQueryBuilder<?> builder = whereClause.addUnion(sb2);
    Query query = builder.build();
    Node one = NodeFactory.createURI("one");
    Node two = NodeFactory.createURI("two");
    Node three = NodeFactory.createURI("three");
    Node uno = NodeFactory.createURI("uno");
    Node dos = NodeFactory.createURI("dos");
    Node tres = NodeFactory.createURI("tres");
    ElementUnion union = new ElementUnion();
    ElementPathBlock epb = new ElementPathBlock();
    Triple t = new Triple(one, two, Var.alloc(v));
    epb.addTriple(t);
    union.addElement(epb);
    ElementPathBlock epb2 = new ElementPathBlock();
    t = new Triple(uno, dos, tres);
    epb2.addTriple(t);
    union.addElement(epb2);
    WhereValidator visitor = new WhereValidator(union);
    query.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
    builder.setVar(v, NodeFactory.createURI("three"));
    query = builder.build();
    union = new ElementUnion();
    epb = new ElementPathBlock();
    t = new Triple(one, two, three);
    epb.addTriple(t);
    union.addElement(epb);
    epb2 = new ElementPathBlock();
    t = new Triple(uno, dos, tres);
    epb2.addTriple(t);
    union.addElement(epb2);
    visitor = new WhereValidator(union);
    query.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
}

Example 4 with ElementUnion

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

the class WhereHandlerTest method testAddUnionWithVar.

@Test
public void testAddUnionWithVar() {
    Triple t1 = new Triple(NodeFactory.createURI("one"), NodeFactory.createURI("two"), NodeFactory.createURI("three"));
    Triple t2 = new Triple(NodeFactory.createURI("uno"), NodeFactory.createURI("dos"), NodeFactory.createURI("tres"));
    SelectBuilder sb = new SelectBuilder().addVar("x").addWhere(t1);
    handler.addUnion(sb);
    SelectBuilder sb2 = new SelectBuilder().addWhere(t2);
    handler.addUnion(sb2);
    handler.build();
    ElementUnion union = new ElementUnion();
    Query q = new Query();
    q.setQuerySelectType();
    ElementPathBlock epb1 = new ElementPathBlock();
    epb1.addTriple(t1);
    q.setQueryPattern(epb1);
    q.addProjectVars(Arrays.asList(Var.alloc("x")));
    ElementSubQuery sq = new ElementSubQuery(q);
    union.addElement(sq);
    ElementPathBlock epb2 = new ElementPathBlock();
    epb2.addTriple(t2);
    union.addElement(epb2);
    WhereValidator visitor = new WhereValidator(union);
    handler.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
}

Example 5 with ElementUnion

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

the class WhereHandlerTest method testAddUnionToExistingWithVar.

@Test
public void testAddUnionToExistingWithVar() {
    handler.addWhere(new TriplePath(new Triple(NodeFactory.createURI("s"), NodeFactory.createURI("p"), NodeFactory.createURI("o"))));
    SelectBuilder sb = new SelectBuilder().addVar("x").addWhere(new Triple(NodeFactory.createURI("one"), NodeFactory.createURI("two"), NodeFactory.createURI("three")));
    handler.addUnion(sb);
    handler.build();
    Query q = new Query();
    q.setQuerySelectType();
    ElementPathBlock epb1 = new ElementPathBlock();
    epb1.addTriple(new Triple(NodeFactory.createURI("one"), NodeFactory.createURI("two"), NodeFactory.createURI("three")));
    q.setQueryPattern(epb1);
    q.addProjectVars(Arrays.asList(Var.alloc("x")));
    ElementSubQuery sq = new ElementSubQuery(q);
    ElementPathBlock epb2 = new ElementPathBlock();
    epb2.addTriple(new Triple(NodeFactory.createURI("s"), NodeFactory.createURI("p"), NodeFactory.createURI("o")));
    ElementUnion union = new ElementUnion();
    union.addElement(epb2);
    union.addElement(sq);
    WhereValidator visitor = new WhereValidator(union);
    handler.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
}