content: /*
   * 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.journal;
  
  import java.io.IOException;
  import java.nio.ByteBuffer;
  import java.util.zip.Checksum;
  
  import org.apache.cassandra.io.util.DataInputPlus;
  import org.apache.cassandra.io.util.DataOutputPlus;
  import org.apache.cassandra.utils.TimeUUID;
  
  import static org.apache.cassandra.utils.FBUtilities.updateChecksumLong;
  
  class TimeUUIDKeySupport implements KeySupport<TimeUUID>
  {
      static final TimeUUIDKeySupport INSTANCE = new TimeUUIDKeySupport();
  
      @Override
      public int serializedSize(int userVersion)
      {
          return 16;
      }
  
      @Override
      public void serialize(TimeUUID key, DataOutputPlus out, int userVersion) throws IOException
      {
          out.writeLong(key.uuidTimestamp());
          out.writeLong(key.lsb());
      }
  
      @Override
      public void serialize(TimeUUID key, ByteBuffer out, int userVersion) throws IOException
      {
          out.putLong(key.uuidTimestamp());
          out.putLong(key.lsb());
      }
  
      @Override
      public TimeUUID deserialize(DataInputPlus in, int userVersion) throws IOException
      {
          long uuidTimestamp = in.readLong();
          long lsb = in.readLong();
          return new TimeUUID(uuidTimestamp, lsb);
      }
  
      @Override
      public TimeUUID deserialize(ByteBuffer buffer, int position, int userVersion)
      {
          long uuidTimestamp = buffer.getLong(position);
          long lsb = buffer.getLong(position + 8);
          return new TimeUUID(uuidTimestamp, lsb);
      }
  
      @Override
      public TimeUUID deserialize(ByteBuffer buffer, int userVersion)
      {
          long uuidTimestamp = buffer.getLong();
          long lsb = buffer.getLong();
          return new TimeUUID(uuidTimestamp, lsb);
      }
  
      @Override
      public void updateChecksum(Checksum crc, TimeUUID key, int userVersion)
      {
          updateChecksumLong(crc, key.uuidTimestamp());
          updateChecksumLong(crc, key.lsb());
      }
  
      @Override
      public int compareWithKeyAt(TimeUUID key, ByteBuffer buffer, int position, int userVersion)
      {
          long uuidTimestamp = buffer.getLong(position);
          long lsb = buffer.getLong(position + 8);
          return key.uuidTimestamp() != uuidTimestamp
               ? Long.compare(key.uuidTimestamp(), uuidTimestamp)
               : Long.compare(key.lsb(), lsb);
      }
  
      @Override
      public int compare(TimeUUID o1, TimeUUID o2)
      {
          return o1.compareTo(o2);
      }
  }
  