Examples with ValueExprEvaluationException org.openrdf.query.algebra.evaluation.ValueExprEvaluationException used on opensource projects

Example 1 with ValueExprEvaluationException

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

the class SumFunction method update.

@Override
public void update(final AggregationElement aggregation, final AggregationState state, final VisibilityBindingSet childBindingSet) {
    checkArgument(aggregation.getAggregationType() == AggregationType.SUM, "The SumFunction only accepts SUM AggregationElements.");
    requireNonNull(state);
    requireNonNull(childBindingSet);
    // Only add values to the sum if the child contains the binding that we are summing.
    final String aggregatedName = aggregation.getAggregatedBindingName();
    if (childBindingSet.hasBinding(aggregatedName)) {
        final MapBindingSet result = state.getBindingSet();
        final String resultName = aggregation.getResultBindingName();
        final boolean newBinding = !result.hasBinding(resultName);
        // Get the starting number for the sum.
        Literal sum;
        if (newBinding) {
            sum = new IntegerLiteralImpl(BigInteger.ZERO);
        } else {
            sum = (Literal) state.getBindingSet().getValue(resultName);
        }
        // Add the child binding set's value if it is a numeric literal.
        final Value childValue = childBindingSet.getValue(aggregatedName);
        if (childValue instanceof Literal) {
            final Literal childLiteral = (Literal) childValue;
            if (childLiteral.getDatatype() != null && XMLDatatypeUtil.isNumericDatatype(childLiteral.getDatatype())) {
                try {
                    sum = MathUtil.compute(sum, childLiteral, MathOp.PLUS);
                } catch (final ValueExprEvaluationException e) {
                    log.error("A problem was encountered while updating a Sum Aggregation. This binding set will be ignored: " + childBindingSet);
                    return;
                }
            }
        }
        // Update the state to include the new sum.
        result.addBinding(resultName, sum);
    }
}

Example 2 with ValueExprEvaluationException

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

the class AverageFunction method update.

@Override
public void update(final AggregationElement aggregation, final AggregationState state, final VisibilityBindingSet childBindingSet) {
    checkArgument(aggregation.getAggregationType() == AggregationType.AVERAGE, "The AverageFunction only accepts AVERAGE AggregationElements.");
    requireNonNull(state);
    requireNonNull(childBindingSet);
    // Only update the average if the child contains the binding that we are averaging.
    final String aggregatedName = aggregation.getAggregatedBindingName();
    if (childBindingSet.hasBinding(aggregatedName)) {
        final MapBindingSet result = state.getBindingSet();
        final String resultName = aggregation.getResultBindingName();
        final boolean newBinding = !result.hasBinding(resultName);
        // Get the state of the average.
        final Map<String, AverageState> averageStates = state.getAverageStates();
        AverageState averageState = newBinding ? new AverageState() : averageStates.get(resultName);
        // Update the state of the average.
        final Value childValue = childBindingSet.getValue(aggregatedName);
        if (childValue instanceof Literal) {
            final Literal childLiteral = (Literal) childValue;
            if (childLiteral.getDatatype() != null && XMLDatatypeUtil.isNumericDatatype(childLiteral.getDatatype())) {
                try {
                    // Update the sum.
                    final Literal oldSum = new DecimalLiteralImpl(averageState.getSum());
                    final BigDecimal sum = MathUtil.compute(oldSum, childLiteral, MathOp.PLUS).decimalValue();
                    // Update the count.
                    final BigInteger count = averageState.getCount().add(BigInteger.ONE);
                    // Update the BindingSet to include the new average.
                    final Literal sumLiteral = new DecimalLiteralImpl(sum);
                    final Literal countLiteral = new IntegerLiteralImpl(count);
                    final Literal average = MathUtil.compute(sumLiteral, countLiteral, MathOp.DIVIDE);
                    result.addBinding(resultName, average);
                    // Update the average state that is stored.
                    averageState = new AverageState(sum, count);
                    averageStates.put(resultName, averageState);
                } catch (final ValueExprEvaluationException e) {
                    log.error("A problem was encountered while updating an Average Aggregation. This binding set will be ignored: " + childBindingSet);
                    return;
                }
            }
        }
    }
}

Example 3 with ValueExprEvaluationException

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

the class GeoFunctionsIT method withGeoFilters.

@Test
public void withGeoFilters() throws Exception {
    final String sparql = "PREFIX geo: <http://www.opengis.net/ont/geosparql#> " + "PREFIX ryageo: <tag:rya.apache.org,2017:function/geo#> " + "PREFIX geof: <http://www.opengis.net/def/function/geosparql/> " + "SELECT ?feature ?point ?wkt {" + " ?feature a geo:Feature . " + " ?feature geo:hasGeometry ?point . " + " ?point a geo:Point . " + " ?point geo:asWKT ?wkt . " + " FILTER(ryageo:ehContains(?wkt, \"POLYGON((-77 39, -76 39, -76 38, -77 38, -77 39))\"^^geo:wktLiteral)) " + "}";
    final ValueFactory vf = new ValueFactoryImpl();
    final Set<Statement> statements = Sets.newHashSet(vf.createStatement(vf.createURI("tag:rya.apache.org,2017:ex#feature"), vf.createURI("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"), vf.createURI("http://www.opengis.net/ont/geosparql#Feature")), vf.createStatement(vf.createURI("tag:rya.apache.org,2017:ex#feature"), vf.createURI("http://www.opengis.net/ont/geosparql#hasGeometry"), vf.createURI("tag:rya.apache.org,2017:ex#test_point")), vf.createStatement(vf.createURI("tag:rya.apache.org,2017:ex#test_point"), vf.createURI("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"), vf.createURI("http://www.opengis.net/ont/geosparql#Point")), vf.createStatement(vf.createURI("tag:rya.apache.org,2017:ex#test_point"), vf.createURI("http://www.opengis.net/ont/geosparql#asWKT"), vf.createLiteral("Point(-77.03524 38.889468)", vf.createURI("http://www.opengis.net/ont/geosparql#wktLiteral"))));
    // Create a Geo function.
    final Function geoFunction = new Function() {

        @Override
        public String getURI() {
            return "tag:rya.apache.org,2017:function/geo#ehContains";
        }

        @Override
        public Value evaluate(final ValueFactory valueFactory, final Value... args) throws ValueExprEvaluationException {
            if (args.length != 2) {
                throw new ValueExprEvaluationException(getURI() + " requires exactly 3 arguments, got " + args.length);
            }
            return valueFactory.createLiteral(true);
        }
    };
    // Add our new function to the registry
    FunctionRegistry.getInstance().add(geoFunction);
    // The expected results of the SPARQL query once the PCJ has been computed.
    final Set<BindingSet> expectedResults = new HashSet<>();
    final MapBindingSet bs = new MapBindingSet();
    bs.addBinding("wkt", vf.createLiteral("Point(-77.03524 38.889468)", vf.createURI("http://www.opengis.net/ont/geosparql#wktLiteral")));
    bs.addBinding("feature", vf.createURI("tag:rya.apache.org,2017:ex#feature"));
    bs.addBinding("point", vf.createURI("tag:rya.apache.org,2017:ex#test_point"));
    expectedResults.add(bs);
    runTest(sparql, statements, expectedResults);
}

Example 4 with ValueExprEvaluationException

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

the class QueryIT method withCustomFilters.

@Test
public void withCustomFilters() throws Exception {
    final String sparql = "prefix ryafunc: <tag:rya.apache.org,2017:function#> " + "SELECT ?name ?age " + "{ " + "FILTER( ryafunc:isTeen(?age) ) . " + "?name <http://hasAge> ?age . " + "?name <http://playsSport> \"Soccer\" . " + "}";
    // Register a custom Filter.
    final Function fooFunction = new Function() {

        @Override
        public String getURI() {
            return "tag:rya.apache.org,2017:function#isTeen";
        }

        static final int TEEN_THRESHOLD = 20;

        @Override
        public Value evaluate(final ValueFactory valueFactory, final Value... args) throws ValueExprEvaluationException {
            if (args.length != 1) {
                throw new ValueExprEvaluationException("isTeen() requires exactly 1 argument, got " + args.length);
            }
            if (args[0] instanceof Literal) {
                final Literal literal = (Literal) args[0];
                final URI datatype = literal.getDatatype();
                // ABS function accepts only numeric literals
                if (datatype != null && XMLDatatypeUtil.isNumericDatatype(datatype)) {
                    if (XMLDatatypeUtil.isDecimalDatatype(datatype)) {
                        final BigDecimal bigValue = literal.decimalValue();
                        return BooleanLiteralImpl.valueOf(bigValue.compareTo(new BigDecimal(TEEN_THRESHOLD)) < 0);
                    } else if (XMLDatatypeUtil.isFloatingPointDatatype(datatype)) {
                        final double doubleValue = literal.doubleValue();
                        return BooleanLiteralImpl.valueOf(doubleValue < TEEN_THRESHOLD);
                    } else {
                        throw new ValueExprEvaluationException("unexpected datatype (expect decimal/int or floating) for function operand: " + args[0]);
                    }
                } else {
                    throw new ValueExprEvaluationException("unexpected input value (expect non-null and numeric) for function: " + args[0]);
                }
            } else {
                throw new ValueExprEvaluationException("unexpected input value (expect literal) for function: " + args[0]);
            }
        }
    };
    // Add our new function to the registry
    FunctionRegistry.getInstance().add(fooFunction);
    // Create the Statements that will be loaded into Rya.
    final ValueFactory vf = new ValueFactoryImpl();
    final Collection<Statement> statements = Sets.newHashSet(vf.createStatement(vf.createURI("http://Alice"), vf.createURI("http://hasAge"), vf.createLiteral(18)), vf.createStatement(vf.createURI("http://Bob"), vf.createURI("http://hasAge"), vf.createLiteral(30)), vf.createStatement(vf.createURI("http://Charlie"), vf.createURI("http://hasAge"), vf.createLiteral(14)), vf.createStatement(vf.createURI("http://David"), vf.createURI("http://hasAge"), vf.createLiteral(16)), vf.createStatement(vf.createURI("http://Eve"), vf.createURI("http://hasAge"), vf.createLiteral(35)), vf.createStatement(vf.createURI("http://Alice"), vf.createURI("http://playsSport"), vf.createLiteral("Soccer")), vf.createStatement(vf.createURI("http://Bob"), vf.createURI("http://playsSport"), vf.createLiteral("Soccer")), vf.createStatement(vf.createURI("http://Charlie"), vf.createURI("http://playsSport"), vf.createLiteral("Basketball")), vf.createStatement(vf.createURI("http://Charlie"), vf.createURI("http://playsSport"), vf.createLiteral("Soccer")), vf.createStatement(vf.createURI("http://David"), vf.createURI("http://playsSport"), vf.createLiteral("Basketball")));
    // Create the expected results of the SPARQL query once the PCJ has been computed.
    final Set<BindingSet> expectedResults = new HashSet<>();
    MapBindingSet bs = new MapBindingSet();
    bs.addBinding("name", vf.createURI("http://Alice"));
    bs.addBinding("age", vf.createLiteral("18", XMLSchema.INTEGER));
    expectedResults.add(bs);
    bs = new MapBindingSet();
    bs.addBinding("name", vf.createURI("http://Charlie"));
    bs.addBinding("age", vf.createLiteral("14", XMLSchema.INTEGER));
    expectedResults.add(bs);
    // Verify the end results of the query match the expected results.
    runTest(sparql, statements, expectedResults, ExportStrategy.RYA);
}

Example 5 with ValueExprEvaluationException

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

the class TemporalInstantRelationFunction method evaluate.

@Override
public Value evaluate(final ValueFactory valueFactory, final Value... args) throws ValueExprEvaluationException {
    if (args.length != 2) {
        throw new ValueExprEvaluationException(getURI() + " requires exactly 2 arguments, got " + args.length);
    }
    try {
        final ZonedDateTime date1 = ZonedDateTime.parse(args[0].stringValue());
        final ZonedDateTime date2 = ZonedDateTime.parse(args[1].stringValue());
        final boolean result = relation(date1, date2);
        return valueFactory.createLiteral(result);
    } catch (final DateTimeParseException e) {
        throw new ValueExprEvaluationException("Date/Times provided must be of the ISO-8601 format. Example: 2007-04-05T14:30Z");
    }
}