cassandra-analytics-core/src/main/java/org/apache/cassandra/spark/common/schema/DoubleType.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 at
 *
 *   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 org.apache.cassandra.spark.common.schema;

import java.nio.ByteBuffer;

public class DoubleType implements ColumnType<Double>
{
    private Double getDouble(ByteBuffer bytes)
    {
        return bytes.getDouble(bytes.position());
    }

    @Override
    public Double parseColumn(ByteBuffer buffer, int length)
    {
        byte[] value = new byte[length];
        buffer.get(value, 0, length);
        return getDouble(ByteBuffer.wrap(value));
    }

    @Override
    public Double getDefault()
    {
        return 0d;
    }

    @Override
    public ByteBuffer serialize(Double value)
    {
        return ByteBuffer.allocate(8).putDouble(0, value);
    }
}