Examples with AMutableUUID org.apache.asterix.om.base.AMutableUUID used on opensource projects

Example 1 with AMutableUUID

use of org.apache.asterix.om.base.AMutableUUID in project asterixdb by apache.

the class AUUIDFromStringConstructorDescriptor 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 AMutableUUID uuid = new AMutableUUID();

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

                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 start = inputArg.getStartOffset();
                        int len = inputArg.getLength();
                        if (serString[start] == ATypeTag.SERIALIZED_STRING_TYPE_TAG) {
                            utf8Ptr.set(serString, start + 1, len - 1);
                            // first byte: tag, next x bytes: length
                            int offset = utf8Ptr.getCharStartOffset();
                            uuid.parseUUIDHexBytes(serString, offset);
                            uuidSerde.serialize(uuid, out);
                        } else {
                            throw new TypeMismatchException(getIdentifier(), 0, serString[start], ATypeTag.SERIALIZED_STRING_TYPE_TAG);
                        }
                        result.set(resultStorage);
                    } catch (IOException e) {
                        throw new InvalidDataFormatException(getIdentifier(), e, ATypeTag.SERIALIZED_UUID_TYPE_TAG);
                    }
                }
            };
        }
    };
}