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

Example 11 with AMutablePoint

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

the class CircleCenterAccessor 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 argPtr = new VoidPointable();

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

                private final AMutablePoint aPoint = new AMutablePoint(0, 0);

                @SuppressWarnings("unchecked")
                private final ISerializerDeserializer<APoint> pointSerde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.APOINT);

                @Override
                public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                    eval.evaluate(tuple, argPtr);
                    byte[] bytes = argPtr.getByteArray();
                    int startOffset = argPtr.getStartOffset();
                    resultStorage.reset();
                    try {
                        double cX;
                        double cY;
                        if (bytes[startOffset] == ATypeTag.SERIALIZED_CIRCLE_TYPE_TAG) {
                            cX = ADoubleSerializerDeserializer.getDouble(bytes, startOffset + ACircleSerializerDeserializer.getCenterPointCoordinateOffset(Coordinate.X));
                            cY = ADoubleSerializerDeserializer.getDouble(bytes, startOffset + ACircleSerializerDeserializer.getCenterPointCoordinateOffset(Coordinate.Y));
                            aPoint.setValue(cX, cY);
                            pointSerde.serialize(aPoint, out);
                        } else {
                            throw new TypeMismatchException(getIdentifier(), 0, bytes[startOffset], ATypeTag.SERIALIZED_CIRCLE_TYPE_TAG);
                        }
                    } catch (IOException e) {
                        throw new HyracksDataException(e);
                    }
                    result.set(resultStorage);
                }
            };
        }
    };
}