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

Example 11 with IScalarEvaluator

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

the class UUIDDescriptor method createEvaluatorFactory.

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

        private static final long serialVersionUID = 1L;

        @SuppressWarnings("unchecked")
        private final ISerializerDeserializer<AUUID> uuidSerDe = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AUUID);

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

                private final ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();

                private final DataOutput output = resultStorage.getDataOutput();

                private final AGeneratedUUID uuid = new AGeneratedUUID();

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    uuid.nextUUID();
                    resultStorage.reset();
                    uuidSerDe.serialize(uuid, output);
                    result.set(resultStorage);
                }
            };
        }
    };
}

Example 12 with IScalarEvaluator

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

the class DateFromUnixTimeInDaysDescriptor 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);

                private AMutableDate aDate = new AMutableDate(0);

                // possible returning types
                @SuppressWarnings("unchecked")
                private ISerializerDeserializer<ADate> dateSerde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.ADATE);

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    resultStorage.reset();
                    eval.evaluate(tuple, argPtr);
                    aDate.setValue(ATypeHierarchy.getIntegerValue(getIdentifier().getName(), 0, argPtr.getByteArray(), argPtr.getStartOffset()));
                    dateSerde.serialize(aDate, out);
                    result.set(resultStorage);
                }
            };
        }
    };
}

Example 13 with IScalarEvaluator

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

the class FirstElementEvalFactory method createAggregateEvaluator.

@Override
public IAggregateEvaluator createAggregateEvaluator(final IHyracksTaskContext ctx) throws HyracksDataException {
    return new IAggregateEvaluator() {

        private boolean first = true;

        // Needs to copy the bytes from inputVal to outputVal because the byte space of inputVal could be re-used
        // by consequent tuples.
        private ArrayBackedValueStorage outputVal = new ArrayBackedValueStorage();

        private IPointable inputVal = new VoidPointable();

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

        private final byte[] nullBytes = new byte[] { ATypeTag.SERIALIZED_NULL_TYPE_TAG };

        private final byte[] systemNullBytes = new byte[] { ATypeTag.SERIALIZED_SYSTEM_NULL_TYPE_TAG };

        @Override
        public void init() throws HyracksDataException {
            first = true;
        }

        @Override
        public void step(IFrameTupleReference tuple) throws HyracksDataException {
            if (!first) {
                return;
            }
            eval.evaluate(tuple, inputVal);
            byte typeTagByte = inputVal.getByteArray()[inputVal.getStartOffset()];
            if (typeTagByte == ATypeTag.SERIALIZED_SYSTEM_NULL_TYPE_TAG) {
                // Ignores SYSTEM_NULLs generated by local-first-element.
                return;
            }
            outputVal.assign(inputVal);
            first = false;
        }

        @Override
        public void finish(IPointable result) throws HyracksDataException {
            if (first) {
                result.set(isLocal ? systemNullBytes : nullBytes, 0, 1);
                return;
            }
            result.set(outputVal);
        }

        @Override
        public void finishPartial(IPointable result) throws HyracksDataException {
            finish(result);
        }
    };
}

Example 14 with IScalarEvaluator

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

the class MillisecondsFromDayTimeDurationDescriptor 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<AInt64> int64Serde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT64);

                AMutableInt64 aInt64 = new AMutableInt64(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();
                    if (bytes[offset] != ATypeTag.SERIALIZED_DAY_TIME_DURATION_TYPE_TAG) {
                        throw new TypeMismatchException(getIdentifier(), 0, bytes[offset], ATypeTag.SERIALIZED_DAY_TIME_DURATION_TYPE_TAG);
                    }
                    aInt64.setValue(ADayTimeDurationSerializerDeserializer.getDayTime(bytes, offset + 1));
                    int64Serde.serialize(aInt64, out);
                    result.set(resultStorage);
                }
            };
        }
    };
}

Example 15 with IScalarEvaluator

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

the class OverlapBinsDescriptor 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 final ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage();

                private final DataOutput out = resultStorage.getDataOutput();

                private final IPointable argPtr0 = new VoidPointable();

                private final IPointable argPtr1 = new VoidPointable();

                private final IPointable argPtr2 = new VoidPointable();

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

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

                private final IScalarEvaluator eval2 = args[2].createScalarEvaluator(ctx);

                // for output
                private OrderedListBuilder listBuilder = new OrderedListBuilder();

                private ArrayBackedValueStorage listStorage = new ArrayBackedValueStorage();

                protected final AOrderedListType intListType = new AOrderedListType(BuiltinType.AINTERVAL, null);

                private final AMutableInterval aInterval = new AMutableInterval(0, 0, (byte) -1);

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

                private final GregorianCalendarSystem gregCalSys = GregorianCalendarSystem.getInstance();

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    resultStorage.reset();
                    eval0.evaluate(tuple, argPtr0);
                    eval1.evaluate(tuple, argPtr1);
                    eval2.evaluate(tuple, argPtr2);
                    byte[] bytes0 = argPtr0.getByteArray();
                    int offset0 = argPtr0.getStartOffset();
                    ATypeTag type0 = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(bytes0[offset0]);
                    long intervalStart;
                    long intervalEnd;
                    byte intervalTypeTag;
                    if (type0 == ATypeTag.INTERVAL) {
                        intervalStart = AIntervalSerializerDeserializer.getIntervalStart(bytes0, offset0 + 1);
                        intervalEnd = AIntervalSerializerDeserializer.getIntervalEnd(bytes0, offset0 + 1);
                        intervalTypeTag = AIntervalSerializerDeserializer.getIntervalTimeType(bytes0, offset0 + 1);
                        if (intervalTypeTag == ATypeTag.SERIALIZED_DATE_TYPE_TAG) {
                            intervalStart = intervalStart * GregorianCalendarSystem.CHRONON_OF_DAY;
                        }
                    } else {
                        throw new TypeMismatchException(getIdentifier(), 0, bytes0[offset0], ATypeTag.SERIALIZED_INTERVAL_TYPE_TAG);
                    }
                    // get the anchor instance time
                    byte[] bytes1 = argPtr1.getByteArray();
                    int offset1 = argPtr1.getStartOffset();
                    ATypeTag type1 = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(bytes1[offset1]);
                    if (intervalTypeTag != bytes1[offset1]) {
                        throw new IncompatibleTypeException(getIdentifier(), intervalTypeTag, bytes1[offset1]);
                    }
                    long anchorTime;
                    switch(type1) {
                        case DATE:
                            anchorTime = ADateSerializerDeserializer.getChronon(bytes1, offset1 + 1) * GregorianCalendarSystem.CHRONON_OF_DAY;
                            break;
                        case TIME:
                            anchorTime = ATimeSerializerDeserializer.getChronon(bytes1, offset1 + 1);
                            break;
                        case DATETIME:
                            anchorTime = ADateTimeSerializerDeserializer.getChronon(bytes1, offset1 + 1);
                            break;
                        default:
                            throw new TypeMismatchException(getIdentifier(), 1, bytes1[offset1], ATypeTag.SERIALIZED_DATE_TYPE_TAG, ATypeTag.SERIALIZED_TIME_TYPE_TAG, ATypeTag.SERIALIZED_DATETIME_TYPE_TAG);
                    }
                    byte[] bytes2 = argPtr2.getByteArray();
                    int offset2 = argPtr2.getStartOffset();
                    ATypeTag type2 = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(bytes2[offset2]);
                    int yearMonth = 0;
                    long dayTime = 0;
                    long firstBinIndex;
                    switch(type2) {
                        case YEARMONTHDURATION:
                            yearMonth = AYearMonthDurationSerializerDeserializer.getYearMonth(bytes2, offset2 + 1);
                            int yearStart = gregCalSys.getYear(anchorTime);
                            int monthStart = gregCalSys.getMonthOfYear(anchorTime, yearStart);
                            int yearToBin = gregCalSys.getYear(intervalStart);
                            int monthToBin = gregCalSys.getMonthOfYear(intervalStart, yearToBin);
                            int totalMonths = (yearToBin - yearStart) * 12 + (monthToBin - monthStart);
                            firstBinIndex = totalMonths / yearMonth + ((totalMonths < 0 && totalMonths % yearMonth != 0) ? -1 : 0);
                            if (firstBinIndex > Integer.MAX_VALUE) {
                                throw new OverflowException(getIdentifier());
                            }
                            if (firstBinIndex < Integer.MIN_VALUE) {
                                throw new UnderflowException(getIdentifier());
                            }
                            break;
                        case DAYTIMEDURATION:
                            dayTime = ADayTimeDurationSerializerDeserializer.getDayTime(bytes2, offset2 + 1);
                            long totalChronon = intervalStart - anchorTime;
                            firstBinIndex = totalChronon / dayTime + ((totalChronon < 0 && totalChronon % dayTime != 0) ? -1 : 0);
                            break;
                        default:
                            throw new TypeMismatchException(getIdentifier(), 2, bytes2[offset2], ATypeTag.SERIALIZED_YEAR_MONTH_DURATION_TYPE_TAG, ATypeTag.SERIALIZED_DAY_TIME_DURATION_TYPE_TAG);
                    }
                    long binStartChronon;
                    long binEndChronon;
                    int binOffset;
                    listBuilder.reset(intListType);
                    try {
                        if (intervalTypeTag == ATypeTag.SERIALIZED_DATE_TYPE_TAG) {
                            binOffset = 0;
                            do {
                                binStartChronon = DurationArithmeticOperations.addDuration(anchorTime, yearMonth * (int) (firstBinIndex + binOffset), dayTime * (firstBinIndex + binOffset), false);
                                binEndChronon = DurationArithmeticOperations.addDuration(anchorTime, yearMonth * ((int) (firstBinIndex + binOffset) + 1), dayTime * ((firstBinIndex + binOffset) + 1), false);
                                binStartChronon = binStartChronon / GregorianCalendarSystem.CHRONON_OF_DAY + ((binStartChronon < 0 && binStartChronon % GregorianCalendarSystem.CHRONON_OF_DAY != 0) ? -1 : 0);
                                binEndChronon = binEndChronon / GregorianCalendarSystem.CHRONON_OF_DAY + ((binEndChronon < 0 && binEndChronon % GregorianCalendarSystem.CHRONON_OF_DAY != 0) ? -1 : 0);
                                aInterval.setValue(binStartChronon, binEndChronon, intervalTypeTag);
                                listStorage.reset();
                                intervalSerde.serialize(aInterval, listStorage.getDataOutput());
                                listBuilder.addItem(listStorage);
                                binOffset++;
                            } while (binEndChronon < intervalEnd);
                        } else if (intervalTypeTag == ATypeTag.SERIALIZED_TIME_TYPE_TAG) {
                            if (yearMonth != 0) {
                                throw new InvalidDataFormatException(getIdentifier(), ATypeTag.SERIALIZED_INTERVAL_TYPE_TAG);
                            }
                            binOffset = 0;
                            binStartChronon = DurationArithmeticOperations.addDuration(anchorTime, yearMonth * (int) (firstBinIndex + binOffset), dayTime * (firstBinIndex + binOffset), true);
                            binEndChronon = DurationArithmeticOperations.addDuration(anchorTime, yearMonth * ((int) (firstBinIndex + binOffset) + 1), dayTime * ((firstBinIndex + binOffset) + 1), true);
                            if (binStartChronon < 0 || binStartChronon >= GregorianCalendarSystem.CHRONON_OF_DAY) {
                                // avoid the case where a time bin is before 00:00:00 or no early than 24:00:00
                                throw new InvalidDataFormatException(getIdentifier(), ATypeTag.SERIALIZED_INTERVAL_TYPE_TAG);
                            }
                            while (!((binStartChronon < intervalStart && binEndChronon <= intervalStart) || (binStartChronon >= intervalEnd && binEndChronon > intervalEnd))) {
                                aInterval.setValue(binStartChronon, binEndChronon, intervalTypeTag);
                                listStorage.reset();
                                intervalSerde.serialize(aInterval, listStorage.getDataOutput());
                                listBuilder.addItem(listStorage);
                                binOffset++;
                                binStartChronon = DurationArithmeticOperations.addDuration(anchorTime, yearMonth * (int) (firstBinIndex + binOffset), dayTime * (firstBinIndex + binOffset), true);
                                binEndChronon = DurationArithmeticOperations.addDuration(anchorTime, yearMonth * ((int) (firstBinIndex + binOffset) + 1), dayTime * ((firstBinIndex + binOffset) + 1), true);
                                if (binStartChronon == GregorianCalendarSystem.CHRONON_OF_DAY) {
                                    break;
                                }
                                if (binEndChronon < binStartChronon) {
                                    throw new InvalidDataFormatException(getIdentifier(), ATypeTag.SERIALIZED_INTERVAL_TYPE_TAG);
                                }
                            }
                        } else if (intervalTypeTag == ATypeTag.SERIALIZED_DATETIME_TYPE_TAG) {
                            binOffset = 0;
                            do {
                                binStartChronon = DurationArithmeticOperations.addDuration(anchorTime, yearMonth * (int) (firstBinIndex + binOffset), dayTime * (firstBinIndex + binOffset), false);
                                binEndChronon = DurationArithmeticOperations.addDuration(anchorTime, yearMonth * ((int) (firstBinIndex + binOffset) + 1), dayTime * ((firstBinIndex + binOffset) + 1), false);
                                aInterval.setValue(binStartChronon, binEndChronon, intervalTypeTag);
                                listStorage.reset();
                                intervalSerde.serialize(aInterval, listStorage.getDataOutput());
                                listBuilder.addItem(listStorage);
                                binOffset++;
                            } while (binEndChronon < intervalEnd);
                        } else {
                            throw new TypeMismatchException(getIdentifier(), 0, bytes0[offset0], ATypeTag.SERIALIZED_DATE_TYPE_TAG, ATypeTag.SERIALIZED_TIME_TYPE_TAG, ATypeTag.SERIALIZED_DATETIME_TYPE_TAG);
                        }
                        listBuilder.write(out, true);
                    } catch (IOException e1) {
                        throw new HyracksDataException(e1);
                    }
                    result.set(resultStorage);
                }
            };
        }
    };
}