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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.

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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
 * limitations under the License.
 */

package org.apache.cassandra.serializers;

import java.nio.ByteBuffer;

public class TimeUUIDSerializer extends UUIDSerializer
{
    public static final TimeUUIDSerializer instance = new TimeUUIDSerializer();

    @Override
    public void validate(ByteBuffer bytes) throws MarshalException
    {
        super.validate(bytes);

        // Super class only validates the Time UUID
        ByteBuffer slice = bytes.slice();
        // version is bits 4-7 of byte 6.
        if (bytes.remaining() > 0)
        {
            slice.position(6);
            if ((slice.get() & 0xf0) != 0x10)
                throw new MarshalException("Invalid version for TimeUUID type.");
        }
    }
}