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

Example 1 with ElementFilter

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

the class ElementRewriter method visit.

@Override
public void visit(ElementFilter el) {
    ExprRewriter exprRewriter = new ExprRewriter(values);
    el.getExpr().visit(exprRewriter);
    push(new ElementFilter(exprRewriter.getResult()));
}

Example 2 with ElementFilter

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

the class WhereHandlerTest method testAddFilterVarOnly.

@Test
public void testAddFilterVarOnly() throws ParseException {
    handler.addFilter("?one");
    handler.build();
    ExprFactory fact = new ExprFactory();
    WhereValidator visitor = new WhereValidator(new ElementFilter(fact.asExpr("?one")));
    handler.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
}

Example 3 with ElementFilter

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

the class WhereHandlerTest method testSetVarsInFilter.

@Test
public void testSetVarsInFilter() throws ParseException {
    handler.addFilter("?one < ?v");
    handler.build();
    E_LessThan expr = new ExprFactory().lt(NodeFactory.createVariable("one"), NodeFactory.createVariable("v"));
    WhereValidator visitor = new WhereValidator(new ElementFilter(expr));
    handler.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
    Map<Var, Node> values = new HashMap<>();
    values.put(Var.alloc("v"), NodeFactory.createLiteral(LiteralLabelFactory.createTypedLiteral(10)));
    handler.setVars(values);
    handler.build();
    expr = new ExprFactory().lt(NodeFactory.createVariable("one"), NodeFactory.createLiteral(LiteralLabelFactory.createTypedLiteral(10)));
    visitor = new WhereValidator(new ElementFilter(expr));
    handler.getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
}

Example 4 with ElementFilter

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

the class WhereClauseTest method testSetVarsInFilter.

@ContractTest
public void testSetVarsInFilter() throws ParseException {
    WhereClause<?> whereClause = getProducer().newInstance();
    AbstractQueryBuilder<?> builder = whereClause.addFilter("?one < ?v");
    ExprVar one = new ExprVar(NodeFactory.createVariable("one"));
    ExprVar v = new ExprVar(NodeFactory.createVariable("v"));
    Expr expr = new E_LessThan(one, v);
    ElementFilter filter = new ElementFilter(expr);
    WhereValidator visitor = new WhereValidator(filter);
    builder.build().getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
    Node literal = NodeFactory.createLiteral(LiteralLabelFactory.createTypedLiteral(10));
    builder.setVar(Var.alloc("v"), literal);
    NodeValueInteger lit = new NodeValueInteger(10);
    expr = new E_LessThan(one, lit);
    filter = new ElementFilter(expr);
    builder.build().getQueryPattern().visit(visitor);
    assertTrue(visitor.matching);
}

Example 5 with ElementFilter

use of org.apache.jena.sparql.syntax.ElementFilter 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);
}