asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/serde/APointSerializerDeserializer.java

package edu.uci.ics.asterix.dataflow.data.nontagged.serde;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

import edu.uci.ics.asterix.dataflow.data.nontagged.Coordinate;
import edu.uci.ics.asterix.formats.nontagged.AqlSerializerDeserializerProvider;
import edu.uci.ics.asterix.om.base.AMutablePoint;
import edu.uci.ics.asterix.om.base.APoint;
import edu.uci.ics.asterix.om.types.BuiltinType;
import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer;
import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;

public class APointSerializerDeserializer implements ISerializerDeserializer<APoint> {

    private static final long serialVersionUID = 1L;

    public static final APointSerializerDeserializer INSTANCE = new APointSerializerDeserializer();
    @SuppressWarnings("unchecked")
    private final static ISerializerDeserializer<APoint> pointSerde = AqlSerializerDeserializerProvider.INSTANCE
            .getSerializerDeserializer(BuiltinType.APOINT);
    private final static AMutablePoint aPoint = new AMutablePoint(0, 0);

    private APointSerializerDeserializer() {
    }

    @Override
    public APoint deserialize(DataInput in) throws HyracksDataException {
        try {
            return new APoint(in.readDouble(), in.readDouble());
        } catch (IOException e) {
            throw new HyracksDataException(e);
        }
    }

    @Override
    public void serialize(APoint instance, DataOutput out) throws HyracksDataException {
        try {
            out.writeDouble(instance.getX());
            out.writeDouble(instance.getY());
        } catch (IOException e) {
            throw new HyracksDataException(e);
        }
    }

    public static void serialize(double x, double y, DataOutput out) throws HyracksDataException {
        try {
            out.writeDouble(x);
            out.writeDouble(y);
        } catch (IOException e) {
            throw new HyracksDataException(e);
        }
    }

    public final static int getCoordinateOffset(Coordinate coordinate) throws HyracksDataException {

        switch (coordinate) {
            case X:
                return 1;
            case Y:
                return 9;
            default:
                throw new HyracksDataException("Wrong coordinate");
        }

    }

    public static void parse(String point, DataOutput out) throws HyracksDataException {
        try {
            aPoint.setValue(Double.parseDouble(point.substring(0, point.indexOf(','))),
                    Double.parseDouble(point.substring(point.indexOf(',') + 1, point.length())));
            pointSerde.serialize(aPoint, out);
        } catch (HyracksDataException e) {
            throw new HyracksDataException(point + " can not be an instance of point");
        }
    }

}