Examples with UTF8StringCharacterIterator org.apache.hyracks.data.std.util.UTF8StringCharacterIterator used on opensource projects

Example 1 with UTF8StringCharacterIterator

use of org.apache.hyracks.data.std.util.UTF8StringCharacterIterator in project asterixdb by apache.

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

                private final DataOutput out = resultStorage.getDataOutput();

                private final IPointable argPtr = new VoidPointable();

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

                private final GregorianCalendarSystem calSystem = GregorianCalendarSystem.getInstance();

                private final UTF8StringPointable strExprPtr = new UTF8StringPointable();

                private final UTF8StringCharacterIterator strIter = new UTF8StringCharacterIterator();

                // for output: type integer
                @SuppressWarnings("unchecked")
                private final ISerializerDeserializer<AInt64> intSerde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT64);

                private final AMutableInt64 aMutableInt64 = new AMutableInt64(0);

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    eval.evaluate(tuple, argPtr);
                    byte[] bytes = argPtr.getByteArray();
                    int startOffset = argPtr.getStartOffset();
                    int len = argPtr.getLength();
                    resultStorage.reset();
                    try {
                        if (bytes[startOffset] == ATypeTag.SERIALIZED_DURATION_TYPE_TAG) {
                            aMutableInt64.setValue(calSystem.getDurationYear(ADurationSerializerDeserializer.getYearMonth(bytes, startOffset + 1)));
                            intSerde.serialize(aMutableInt64, out);
                            result.set(resultStorage);
                            return;
                        }
                        if (bytes[startOffset] == ATypeTag.SERIALIZED_YEAR_MONTH_DURATION_TYPE_TAG) {
                            aMutableInt64.setValue(calSystem.getDurationYear(AYearMonthDurationSerializerDeserializer.getYearMonth(bytes, startOffset + 1)));
                            intSerde.serialize(aMutableInt64, out);
                            result.set(resultStorage);
                            return;
                        }
                        long chrononTimeInMs = 0;
                        if (bytes[startOffset] == ATypeTag.SERIALIZED_DATE_TYPE_TAG) {
                            chrononTimeInMs = AInt32SerializerDeserializer.getInt(bytes, startOffset + 1) * GregorianCalendarSystem.CHRONON_OF_DAY;
                        } else if (bytes[startOffset] == ATypeTag.SERIALIZED_DATETIME_TYPE_TAG) {
                            chrononTimeInMs = AInt64SerializerDeserializer.getLong(bytes, startOffset + 1);
                        } else if (bytes[startOffset] == ATypeTag.SERIALIZED_STRING_TYPE_TAG) {
                            int year;
                            strExprPtr.set(bytes, startOffset + 1, len - 1);
                            strIter.reset(strExprPtr);
                            char firstChar = strIter.next();
                            if (firstChar == '-') {
                                // in case of a negative year
                                year = -1 * ((strIter.next() - '0') * 1000 + (strIter.next() - '0') * 100 + (strIter.next() - '0') * 10 + (strIter.next() - '0'));
                            } else {
                                year = (firstChar - '0') * 1000 + (strIter.next() - '0') * 100 + (strIter.next() - '0') * 10 + (strIter.next() - '0');
                            }
                            aMutableInt64.setValue(year);
                            intSerde.serialize(aMutableInt64, out);
                            result.set(resultStorage);
                            return;
                        } else {
                            throw new TypeMismatchException(getIdentifier(), 0, bytes[startOffset], ATypeTag.SERIALIZED_DURATION_TYPE_TAG, ATypeTag.SERIALIZED_YEAR_MONTH_DURATION_TYPE_TAG, ATypeTag.SERIALIZED_DATE_TYPE_TAG, ATypeTag.SERIALIZED_DATETIME_TYPE_TAG, ATypeTag.SERIALIZED_STRING_TYPE_TAG);
                        }
                        int year = calSystem.getYear(chrononTimeInMs);
                        aMutableInt64.setValue(year);
                        intSerde.serialize(aMutableInt64, out);
                        result.set(resultStorage);
                    } catch (IOException e) {
                        throw new HyracksDataException(e);
                    }
                }
            };
        }
    };
}