Examples with BindingBuilder org.apache.jena.sparql.engine.binding.BindingBuilder used on opensource projects

Example 21 with BindingBuilder

use of org.apache.jena.sparql.engine.binding.BindingBuilder in project jena by apache.

the class Algebra method merge.

/**
 * This is the SPARQL merge rule.
 */
public static Binding merge(Binding bindingLeft, Binding bindingRight) {
    // Test to see if compatible: Iterate over variables in left
    boolean matches = compatible(bindingLeft, bindingRight);
    if (!matches)
        return null;
    // If compatible, merge. Iterate over variables in right but not in left.
    BindingBuilder b = Binding.builder(bindingLeft);
    for (Iterator<Var> vIter = bindingRight.vars(); vIter.hasNext(); ) {
        Var v = vIter.next();
        Node n = bindingRight.get(v);
        if (!bindingLeft.contains(v))
            b.add(v, n);
    }
    return b.build();
}

Example 22 with BindingBuilder

use of org.apache.jena.sparql.engine.binding.BindingBuilder in project jena by apache.

the class SolverRX4 method matchQuad.

/**
 * Match data "qData" against "tGraphNode, tPattern", including RDF-star terms.
 */
public static Binding matchQuad(Binding input, Quad qData, Node tGraphNode, Triple tPattern) {
    BindingBuilder bb = Binding.builder(input);
    boolean r = matchQuad(bb, qData, tGraphNode, tPattern);
    return r ? bb.build() : null;
}

Example 23 with BindingBuilder

use of org.apache.jena.sparql.engine.binding.BindingBuilder in project jena by apache.

the class SolverRX3 method matchTriple.

public static Binding matchTriple(Binding input, Triple tData, Triple tPattern) {
    BindingBuilder bb = Binding.builder(input);
    boolean r = bindTriple(bb, tData, tPattern);
    return r ? bb.build() : null;
}

Example 24 with BindingBuilder

use of org.apache.jena.sparql.engine.binding.BindingBuilder in project jena by apache.

the class SolverRX3 method match.

// RDF term matcher - may recurse and call matchTriple is a triple term is in the pattern.
private static boolean match(BindingBuilder bb, Node nData, Node nPattern) {
    if (nPattern == null)
        return true;
    if (nData == Node.ANY)
        return true;
    // Deep substitute. This happens anyway as we walk structures.
    // nPattern = Substitute.substitute(nPattern, input);
    // Shallow substitute
    nPattern = Var.lookup(v -> bb.get(v), nPattern);
    // nPattern.isConcrete() : either nPattern is an RDF term or is <<>> with no variables.
    if (nPattern.isConcrete()) {
        // Term comparison.
        return sameTermAs(nData, nPattern);
    }
    // Easy case - nPattern is a variable.
    if (Var.isVar(nPattern)) {
        Var var = Var.alloc(nPattern);
        bb.add(var, nData);
        return true;
    }
    // nPattern is <<>> with variables. Is the data a <<>>?
    if (!nData.isNodeTriple())
        return false;
    // nData is <<>>, nPattern is <<>>
    // Unpack, match components.
    Triple tPattern = nPattern.getTriple();
    Triple tData = nData.getTriple();
    return bindTriple(bb, tData, tPattern);
}

Example 25 with BindingBuilder

use of org.apache.jena.sparql.engine.binding.BindingBuilder in project jena by apache.

the class TestDistinctDataNet method randomBinding.

private Binding randomBinding(Var[] vars) {
    BindingBuilder builder = Binding.builder();
    builder.add(vars[0], NodeFactory.createBlankNode());
    builder.add(vars[1], NodeFactory.createURI(randomURI()));
    builder.add(vars[2], NodeFactory.createURI(randomURI()));
    builder.add(vars[3], NodeFactory.createLiteral(randomString(20)));
    builder.add(vars[4], NodeFactory.createBlankNode());
    builder.add(vars[5], NodeFactory.createURI(randomURI()));
    builder.add(vars[6], NodeFactory.createURI(randomURI()));
    builder.add(vars[7], NodeFactory.createLiteral(randomString(5)));
    builder.add(vars[8], NodeFactory.createLiteral("" + random.nextInt(), XSDDatatype.XSDinteger));
    builder.add(vars[9], NodeFactory.createBlankNode());
    return builder.build();
}