Examples with ValueConstant org.openrdf.query.algebra.ValueConstant used on opensource projects

Example 6 with ValueConstant

use of org.openrdf.query.algebra.ValueConstant in project incubator-rya by apache.

the class EventQueryNode2IT method extractArguments.

private Value[] extractArguments(final String matchName, final FunctionCall call) {
    final Value[] args = new Value[call.getArgs().size() - 1];
    int argI = 0;
    for (int i = 0; i != call.getArgs().size(); ++i) {
        final ValueExpr arg = call.getArgs().get(i);
        if (argI == i && arg instanceof Var && matchName.equals(((Var) arg).getName())) {
            continue;
        }
        if (arg instanceof ValueConstant) {
            args[argI] = ((ValueConstant) arg).getValue();
        } else if (arg instanceof Var && ((Var) arg).hasValue()) {
            args[argI] = ((Var) arg).getValue();
        } else {
            throw new IllegalArgumentException("Query error: Found " + arg + ", expected a Literal, BNode or URI");
        }
        ++argI;
    }
    return args;
}

Example 7 with ValueConstant

use of org.openrdf.query.algebra.ValueConstant in project incubator-rya by apache.

the class ConstructConsequentVisitor method recordConsequent.

private void recordConsequent(ProjectionElemList variables, List<ExtensionElem> extensionElements) {
    Map<String, Value> bindings = new ConcurrentHashMap<>();
    Map<String, Value> values = new ConcurrentHashMap<>();
    Set<String> queryBnodes = new HashSet<>();
    Set<String> projectedBnodes = new HashSet<>();
    for (ExtensionElem ee : extensionElements) {
        if (ee.getExpr() instanceof ValueConstant) {
            bindings.put(ee.getName(), ((ValueConstant) ee.getExpr()).getValue());
        } else if (ee.getExpr() instanceof BNodeGenerator) {
            queryBnodes.add(ee.getName());
        }
    }
    for (ProjectionElem var : variables.getElements()) {
        String sourceName = var.getSourceName();
        String targetName = var.getTargetName();
        Value constValue = bindings.get(sourceName);
        if (constValue != null) {
            values.put(targetName, constValue);
        } else if (queryBnodes.contains(sourceName)) {
            projectedBnodes.add(targetName);
        }
    }
    Var subjVar = new Var(SUBJECT_VAR_NAME, values.get(SUBJECT_VAR_NAME));
    Var predVar = new Var(PREDICATE_VAR_NAME, values.get(PREDICATE_VAR_NAME));
    Var objVar = new Var(OBJECT_VAR_NAME, values.get(OBJECT_VAR_NAME));
    subjVar.setAnonymous(projectedBnodes.contains(SUBJECT_VAR_NAME));
    predVar.setAnonymous(projectedBnodes.contains(PREDICATE_VAR_NAME));
    objVar.setAnonymous(projectedBnodes.contains(OBJECT_VAR_NAME));
    StatementPattern sp = new StatementPattern(subjVar, predVar, objVar);
    consequentStatementPatterns.add(sp);
}

Example 8 with ValueConstant

use of org.openrdf.query.algebra.ValueConstant in project incubator-rya by apache.

the class GeoParseUtils method extractArguments.

/**
 * Extracts the arguments used in a {@link FunctionCall}.
 * @param matchName - The variable name to match to arguments used in the {@link FunctionCall}.
 * @param call - The {@link FunctionCall} to match against.
 * @return - The {@link Value}s matched.
 */
public static Object[] extractArguments(final String matchName, final FunctionCall call) {
    final Object[] args = new Object[call.getArgs().size() - 1];
    int argI = 0;
    for (int i = 0; i != call.getArgs().size(); ++i) {
        final ValueExpr arg = call.getArgs().get(i);
        if (argI == i && arg instanceof Var && matchName.equals(((Var) arg).getName())) {
            continue;
        }
        if (arg instanceof ValueConstant) {
            args[argI] = ((ValueConstant) arg).getValue();
        } else if (arg instanceof Var && ((Var) arg).hasValue()) {
            args[argI] = ((Var) arg).getValue();
        } else {
            args[argI] = arg;
        }
        ++argI;
    }
    return args;
}

Example 9 with ValueConstant

use of org.openrdf.query.algebra.ValueConstant in project incubator-rya by apache.

the class ConstructConsequentVisitorTest method testConcreteSP.

@Test
public void testConcreteSP() {
    Extension extension = new Extension(new SingletonSet(), new ExtensionElem(new ValueConstant(FOAF.PERSON), "x"), new ExtensionElem(new ValueConstant(RDF.TYPE), "y"), new ExtensionElem(new ValueConstant(OWL.CLASS), "z"));
    Projection projection = new Projection(extension, new ProjectionElemList(new ProjectionElem("x", "subject"), new ProjectionElem("y", "predicate"), new ProjectionElem("z", "object")));
    ConstructConsequentVisitor visitor = new ConstructConsequentVisitor();
    projection.visit(visitor);
    Set<StatementPattern> expected = Sets.newHashSet(new StatementPattern(s(FOAF.PERSON), p(RDF.TYPE), o(OWL.CLASS)));
    Assert.assertEquals(expected, visitor.getConsequents());
}

Example 10 with ValueConstant

use of org.openrdf.query.algebra.ValueConstant in project incubator-rya by apache.

the class ConstructConsequentVisitorTest method testMissingVariables.

@Test
public void testMissingVariables() {
    Extension extension = new Extension(new SingletonSet(), new ExtensionElem(new ValueConstant(FOAF.PERSON), "x"), new ExtensionElem(new ValueConstant(RDF.TYPE), "y"));
    Projection projection = new Projection(extension, new ProjectionElemList(new ProjectionElem("x", "s"), new ProjectionElem("y", "predicate"), new ProjectionElem("z", "object")));
    ConstructConsequentVisitor visitor = new ConstructConsequentVisitor();
    projection.visit(visitor);
    Set<StatementPattern> expected = Sets.newHashSet(new StatementPattern(s(null), p(RDF.TYPE), o(null)));
    Assert.assertEquals(expected, visitor.getConsequents());
}