Examples with IScalarEvaluator org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator used on opensource projects

Example 46 with IScalarEvaluator

use of org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator in project asterixdb by apache.

the class DurationFromMonthsDescriptor method createEvaluatorFactory.

@Override
public IScalarEvaluatorFactory createEvaluatorFactory(final IScalarEvaluatorFactory[] args) {
    return new IScalarEvaluatorFactory() {

        private static final long serialVersionUID = 1L;

        @Override
        public IScalarEvaluator createScalarEvaluator(final IHyracksTaskContext ctx) throws HyracksDataException {
            return new IScalarEvaluator() {

                private ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();

                private DataOutput out = resultStorage.getDataOutput();

                private IPointable argPtr0 = new VoidPointable();

                private IScalarEvaluator eval0 = args[0].createScalarEvaluator(ctx);

                @SuppressWarnings("unchecked")
                private ISerializerDeserializer<ADuration> durationSerde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.ADURATION);

                AMutableDuration aDuration = new AMutableDuration(0, 0);

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    resultStorage.reset();
                    eval0.evaluate(tuple, argPtr0);
                    byte[] bytes = argPtr0.getByteArray();
                    int offset = argPtr0.getStartOffset();
                    aDuration.setValue(ATypeHierarchy.getIntegerValue(getIdentifier().getName(), 0, bytes, offset), 0);
                    durationSerde.serialize(aDuration, out);
                    result.set(resultStorage);
                }
            };
        }
    };
}

Example 47 with IScalarEvaluator

use of org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator in project asterixdb by apache.

the class DatetimeFromUnixTimeInSecsDescriptor method createEvaluatorFactory.

/* (non-Javadoc)
     * @see org.apache.asterix.runtime.base.IScalarFunctionDynamicDescriptor#createEvaluatorFactory(org.apache.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory[])
     */
@Override
public IScalarEvaluatorFactory createEvaluatorFactory(final IScalarEvaluatorFactory[] args) {
    return new IScalarEvaluatorFactory() {

        private static final long serialVersionUID = 1L;

        @Override
        public IScalarEvaluator createScalarEvaluator(final IHyracksTaskContext ctx) throws HyracksDataException {
            return new IScalarEvaluator() {

                private ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();

                private DataOutput out = resultStorage.getDataOutput();

                private IPointable argPtr = new VoidPointable();

                private IScalarEvaluator eval = args[0].createScalarEvaluator(ctx);

                // possible output types
                @SuppressWarnings("unchecked")
                private ISerializerDeserializer<ADateTime> datetimeSerde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.ADATETIME);

                private AMutableDateTime aDatetime = new AMutableDateTime(0);

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    resultStorage.reset();
                    eval.evaluate(tuple, argPtr);
                    byte[] bytes = argPtr.getByteArray();
                    int offset = argPtr.getStartOffset();
                    ATypeTag argPtrTypeTag = ATypeTag.VALUE_TYPE_MAPPING[bytes[offset]];
                    switch(argPtrTypeTag) {
                        case TINYINT:
                            aDatetime.setValue(AInt8SerializerDeserializer.getByte(bytes, offset + 1) * 1000l);
                            break;
                        case SMALLINT:
                            aDatetime.setValue(AInt16SerializerDeserializer.getShort(bytes, offset + 1) * 1000l);
                            break;
                        case INTEGER:
                            aDatetime.setValue(AInt32SerializerDeserializer.getInt(bytes, offset + 1) * 1000l);
                            break;
                        case BIGINT:
                            aDatetime.setValue(AInt64SerializerDeserializer.getLong(bytes, offset + 1) * 1000l);
                            break;
                        default:
                            throw new TypeMismatchException(getIdentifier(), 0, bytes[offset], ATypeTag.SERIALIZED_INT8_TYPE_TAG, ATypeTag.SERIALIZED_INT16_TYPE_TAG, ATypeTag.SERIALIZED_INT32_TYPE_TAG, ATypeTag.SERIALIZED_INT64_TYPE_TAG);
                    }
                    datetimeSerde.serialize(aDatetime, out);
                    result.set(resultStorage);
                }
            };
        }
    };
}

Example 48 with IScalarEvaluator

use of org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator in project asterixdb by apache.

the class DayOfWeekDescriptor method createEvaluatorFactory.

@Override
public IScalarEvaluatorFactory createEvaluatorFactory(final IScalarEvaluatorFactory[] args) {
    return new IScalarEvaluatorFactory() {

        private static final long serialVersionUID = 1L;

        @Override
        public IScalarEvaluator createScalarEvaluator(final IHyracksTaskContext ctx) throws HyracksDataException {
            return new IScalarEvaluator() {

                private ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();

                private DataOutput out = resultStorage.getDataOutput();

                private IPointable argPtr = new VoidPointable();

                private IScalarEvaluator eval = args[0].createScalarEvaluator(ctx);

                // possible returning types
                @SuppressWarnings("unchecked")
                private ISerializerDeserializer<AInt64> int64Serde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT64);

                private AMutableInt64 aInt64 = new AMutableInt64(0);

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    resultStorage.reset();
                    eval.evaluate(tuple, argPtr);
                    byte[] bytes = argPtr.getByteArray();
                    int offset = argPtr.getStartOffset();
                    int daysSinceAnchor;
                    int reminder = 0;
                    if (bytes[offset] == ATypeTag.SERIALIZED_DATETIME_TYPE_TAG) {
                        daysSinceAnchor = (int) (ADateTimeSerializerDeserializer.getChronon(bytes, offset + 1) / GregorianCalendarSystem.CHRONON_OF_DAY);
                        reminder = (int) (ADateTimeSerializerDeserializer.getChronon(bytes, offset + 1) % GregorianCalendarSystem.CHRONON_OF_DAY);
                    } else if (bytes[offset] == ATypeTag.SERIALIZED_DATE_TYPE_TAG) {
                        daysSinceAnchor = ADateSerializerDeserializer.getChronon(bytes, offset + 1);
                    } else {
                        throw new TypeMismatchException(getIdentifier(), 0, bytes[offset], ATypeTag.SERIALIZED_DATETIME_TYPE_TAG, ATypeTag.SERIALIZED_DATE_TYPE_TAG);
                    }
                    // adjust the day before 1970-01-01
                    if (daysSinceAnchor < 0 && reminder != 0) {
                        daysSinceAnchor -= 1;
                    }
                    // compute the weekday (0-based, and 0 = Sunday). Adjustment is needed as
                    // the anchor day is Thursday.
                    int weekday = (daysSinceAnchor + ANCHOR_WEEKDAY) % 7;
                    // handle the negative weekday
                    if (weekday < 0) {
                        weekday += 7;
                    }
                    // convert from 0-based to 1-based (so 7 = Sunday)
                    if (weekday == 0) {
                        weekday = 7;
                    }
                    aInt64.setValue(weekday);
                    int64Serde.serialize(aInt64, out);
                    result.set(resultStorage);
                }
            };
        }
    };
}

Example 49 with IScalarEvaluator

use of org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator in project asterixdb by apache.

the class AInt8ConstructorDescriptor method createEvaluatorFactory.

@Override
public IScalarEvaluatorFactory createEvaluatorFactory(final IScalarEvaluatorFactory[] args) {
    return new IScalarEvaluatorFactory() {

        private static final long serialVersionUID = 1L;

        @Override
        public IScalarEvaluator createScalarEvaluator(IHyracksTaskContext ctx) throws HyracksDataException {
            return new IScalarEvaluator() {

                private ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();

                private DataOutput out = resultStorage.getDataOutput();

                private IPointable inputArg = new VoidPointable();

                private IScalarEvaluator eval = args[0].createScalarEvaluator(ctx);

                private byte value;

                private int offset;

                private boolean positive;

                private AMutableInt8 aInt8 = new AMutableInt8((byte) 0);

                @SuppressWarnings("unchecked")
                private ISerializerDeserializer<AInt8> int8Serde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT8);

                private final UTF8StringPointable utf8Ptr = new UTF8StringPointable();

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    try {
                        resultStorage.reset();
                        eval.evaluate(tuple, inputArg);
                        byte[] serString = inputArg.getByteArray();
                        int startOffset = inputArg.getStartOffset();
                        int len = inputArg.getLength();
                        if (serString[startOffset] == ATypeTag.SERIALIZED_STRING_TYPE_TAG) {
                            utf8Ptr.set(serString, startOffset + 1, len - 1);
                            offset = utf8Ptr.getCharStartOffset();
                            //accumulating value in negative domain
                            //otherwise Byte.MIN_VALUE = -(Byte.MAX_VALUE + 1) would have caused overflow
                            value = 0;
                            positive = true;
                            byte limit = -Byte.MAX_VALUE;
                            if (serString[offset] == '+') {
                                offset++;
                            } else if (serString[offset] == '-') {
                                offset++;
                                positive = false;
                                limit = Byte.MIN_VALUE;
                            }
                            int end = startOffset + len;
                            for (; offset < end; offset++) {
                                int digit;
                                if (serString[offset] >= '0' && serString[offset] <= '9') {
                                    value = (byte) (value * 10);
                                    digit = serString[offset] - '0';
                                } else if (serString[offset] == 'i' && serString[offset + 1] == '8' && offset + 2 == end) {
                                    break;
                                } else {
                                    throw new InvalidDataFormatException(getIdentifier(), ATypeTag.SERIALIZED_INT8_TYPE_TAG);
                                }
                                if (value < limit + digit) {
                                    throw new InvalidDataFormatException(getIdentifier(), ATypeTag.SERIALIZED_INT8_TYPE_TAG);
                                }
                                value = (byte) (value - digit);
                            }
                            if (value > 0) {
                                throw new InvalidDataFormatException(getIdentifier(), ATypeTag.SERIALIZED_INT8_TYPE_TAG);
                            }
                            if (value < 0 && positive) {
                                value *= -1;
                            }
                            aInt8.setValue(value);
                            int8Serde.serialize(aInt8, out);
                        } else {
                            throw new InvalidDataFormatException(getIdentifier(), ATypeTag.SERIALIZED_INT8_TYPE_TAG);
                        }
                        result.set(resultStorage);
                    } catch (IOException e1) {
                        throw new InvalidDataFormatException(getIdentifier(), e1, ATypeTag.SERIALIZED_INT8_TYPE_TAG);
                    }
                }
            };
        }
    };
}

Example 50 with IScalarEvaluator

use of org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator in project asterixdb by apache.

the class AIntervalConstructorDescriptor method createEvaluatorFactory.

@Override
public IScalarEvaluatorFactory createEvaluatorFactory(final IScalarEvaluatorFactory[] args) {
    return new IScalarEvaluatorFactory() {

        private static final long serialVersionUID = 1L;

        @Override
        public IScalarEvaluator createScalarEvaluator(IHyracksTaskContext ctx) throws HyracksDataException {
            return new IScalarEvaluator() {

                private ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();

                private DataOutput out = resultStorage.getDataOutput();

                private IPointable argPtr0 = new VoidPointable();

                private IPointable argPtr1 = new VoidPointable();

                private IScalarEvaluator eval0 = args[0].createScalarEvaluator(ctx);

                private IScalarEvaluator eval1 = args[1].createScalarEvaluator(ctx);

                private AMutableInterval aInterval = new AMutableInterval(0L, 0L, (byte) 0);

                @SuppressWarnings("unchecked")
                private ISerializerDeserializer<AInterval> intervalSerde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINTERVAL);

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    resultStorage.reset();
                    eval0.evaluate(tuple, argPtr0);
                    eval1.evaluate(tuple, argPtr1);
                    byte[] bytes0 = argPtr0.getByteArray();
                    int offset0 = argPtr0.getStartOffset();
                    byte[] bytes1 = argPtr1.getByteArray();
                    int offset1 = argPtr1.getStartOffset();
                    try {
                        if (bytes0[offset0] != bytes1[offset1]) {
                            throw new IncompatibleTypeException(getIdentifier(), bytes0[offset0], bytes1[offset1]);
                        }
                        long intervalStart, intervalEnd;
                        ATypeTag intervalType = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(bytes0[offset0]);
                        switch(intervalType) {
                            case DATE:
                                intervalStart = ADateSerializerDeserializer.getChronon(bytes0, offset0 + 1);
                                intervalEnd = ADateSerializerDeserializer.getChronon(bytes1, offset1 + 1);
                                break;
                            case TIME:
                                intervalStart = ATimeSerializerDeserializer.getChronon(bytes0, offset0 + 1);
                                intervalEnd = ATimeSerializerDeserializer.getChronon(bytes1, offset1 + 1);
                                break;
                            case DATETIME:
                                intervalStart = ADateTimeSerializerDeserializer.getChronon(bytes0, offset0 + 1);
                                intervalEnd = ADateTimeSerializerDeserializer.getChronon(bytes1, offset1 + 1);
                                break;
                            default:
                                throw new UnsupportedItemTypeException(getIdentifier(), bytes0[offset0]);
                        }
                        if (intervalEnd < intervalStart) {
                            throw new InvalidDataFormatException(getIdentifier(), ATypeTag.SERIALIZED_INTERVAL_TYPE_TAG);
                        }
                        aInterval.setValue(intervalStart, intervalEnd, intervalType.serialize());
                        intervalSerde.serialize(aInterval, out);
                    } catch (IOException e) {
                        throw new InvalidDataFormatException(getIdentifier(), e, ATypeTag.SERIALIZED_INTERVAL_TYPE_TAG);
                    }
                    result.set(resultStorage);
                }
            };
        }
    };
}