Examples with WhereValidator org.apache.jena.arq.querybuilder.WhereValidator used on opensource projects

Example 51 with WhereValidator

use of org.apache.jena.arq.querybuilder.WhereValidator in project jena by apache.

the class WhereHandlerTest method testAddFilter.

@Test
public void testAddFilter() throws ParseException {
    handler.addFilter("?one < 10");
    handler.build();
    BigInteger bi = new BigInteger(Integer.toString(10));
    E_LessThan expr = new ExprFactory().lt(NodeFactory.createVariable("one"), bi);
    WhereValidator visitor = new WhereValidator(new ElementFilter(expr));
    handler.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
}

Example 52 with WhereValidator

use of org.apache.jena.arq.querybuilder.WhereValidator 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 53 with WhereValidator

use of org.apache.jena.arq.querybuilder.WhereValidator in project jena by apache.

the class WhereHandlerTest method testList.

@Test
public void testList() {
    Node n = handler.list("<one>", "?var", "'three'");
    Node one = NodeFactory.createURI("one");
    Node two = Var.alloc("var").asNode();
    Node three = NodeFactory.createLiteral("three");
    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())));
    WhereValidator visitor = new WhereValidator(epb);
    query.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
    assertTrue(n.isBlank());
}

Example 54 with WhereValidator

use of org.apache.jena.arq.querybuilder.WhereValidator in project jena by apache.

the class WhereHandlerTest method testAddFilterWithNamespace.

@Test
public void testAddFilterWithNamespace() throws ParseException {
    query.setPrefix("afn", "http://jena.apache.org/ARQ/function#");
    handler.addFilter("afn:namespace(?one) = 'foo'");
    handler.build();
    ExprFactory fact = new ExprFactory();
    E_Function func = new E_Function("http://jena.apache.org/ARQ/function#namespace", fact.asList("?one"));
    E_Equals expr = fact.eq(func, "foo");
    WhereValidator visitor = new WhereValidator(new ElementFilter(expr));
    handler.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
}

Example 55 with WhereValidator

use of org.apache.jena.arq.querybuilder.WhereValidator in project jena by apache.

the class WhereHandlerTest method testAddSubQueryWithVars.

@Test
public void testAddSubQueryWithVars() {
    SelectBuilder sb = new SelectBuilder();
    sb.addPrefix("pfx", "uri").addVar("?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.setQuerySelectType();
    q.setQueryPattern(epb);
    ElementSubQuery esq = new ElementSubQuery(q);
    WhereValidator wv = new WhereValidator(esq);
    query.getQueryPattern().visit(wv);
    assertTrue(wv.matching);
}