org.apache.cassandra.dht.ByteOrderedPartitioner Maven / Gradle / Ivy

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/*
 * 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
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 */
package org.apache.cassandra.dht;

import org.apache.cassandra.utils.ObjectSizes;

import java.nio.ByteBuffer;

public class ByteOrderedPartitioner extends AbstractByteOrderedPartitioner
{
    private static final long EMPTY_SIZE = ObjectSizes.measure(MINIMUM);

    public BytesToken getToken(ByteBuffer key)
    {
        if (key.remaining() == 0)
            return MINIMUM;
        return new BytesToken(key);
    }

    @Override
    public long getHeapSizeOf(Token token)
    {
        return EMPTY_SIZE + ObjectSizes.sizeOfArray(((BytesToken) token).token);
    }
}