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

/*
 * Copyright 2009-2011 by The Regents of the University of California
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * you may obtain a copy of the License from
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
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.ACircle;
import edu.uci.ics.asterix.om.base.AMutableCircle;
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 ACircleSerializerDeserializer implements ISerializerDeserializer<ACircle> {

    private static final long serialVersionUID = 1L;

    public static final ACircleSerializerDeserializer INSTANCE = new ACircleSerializerDeserializer();

    @SuppressWarnings("unchecked")
    private final static ISerializerDeserializer<ACircle> circleSerde = AqlSerializerDeserializerProvider.INSTANCE
            .getSerializerDeserializer(BuiltinType.ACIRCLE);
    private final static AMutableCircle aCircle = new AMutableCircle(null, 0);
    private final static AMutablePoint aPoint = new AMutablePoint(0, 0);

    private ACircleSerializerDeserializer() {
    }

    @Override
    public ACircle deserialize(DataInput in) throws HyracksDataException {
        try {
            APoint center = APointSerializerDeserializer.INSTANCE.deserialize(in);
            double radius = ADoubleSerializerDeserializer.INSTANCE.deserialize(in).getDoubleValue();
            return new ACircle(center, radius);
        } catch (IOException e) {
            throw new HyracksDataException(e);
        }
    }

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

    public final static int getCenterPointCoordinateOffset(Coordinate coordinate) throws HyracksDataException {
        switch (coordinate) {
            case X:
                return 1;
            case Y:
                return 9;
            default:
                throw new HyracksDataException("Wrong coordinate");
        }
    }

    public final static int getRadiusOffset() throws HyracksDataException {
        return 17;
    }

    public static void parse(String circle, DataOutput out) throws HyracksDataException {
        try {
            String[] parts = circle.split(" ");
            aPoint.setValue(Double.parseDouble(parts[0].split(",")[0]), Double.parseDouble(parts[0].split(",")[1]));
            aCircle.setValue(aPoint, Double.parseDouble(parts[1].substring(0, parts[1].length())));
            circleSerde.serialize(aCircle, out);
        } catch (HyracksDataException e) {
            throw new HyracksDataException(circle + " can not be an instance of circle");
        }
    }
}