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.db;
  
  import java.nio.ByteBuffer;
  import java.nio.ByteOrder;
  
  import net.nicoulaj.compilecommand.annotations.Inline;
  import org.apache.cassandra.dht.Token;
  import org.apache.cassandra.utils.bytecomparable.ByteSource;
  import org.apache.cassandra.utils.concurrent.OpOrder;
  import org.apache.cassandra.utils.memory.MemoryUtil;
  import org.apache.cassandra.utils.memory.NativeAllocator;
  import org.apache.cassandra.utils.memory.NativeEndianMemoryUtil;
  
  public class NativeDecoratedKey extends DecoratedKey
  {
      final long peer;
  
      public NativeDecoratedKey(Token token, NativeAllocator allocator, OpOrder.Group writeOp, ByteBuffer key)
      {
          super(token);
          assert key != null;
          assert key.order() == ByteOrder.BIG_ENDIAN;
  
          int size = key.remaining();
          this.peer = allocator.allocate(4 + size, writeOp);
          NativeEndianMemoryUtil.setInt(peer, size);
          MemoryUtil.setBytes(peer + 4, key);
      }
  
      public NativeDecoratedKey(Token token, NativeAllocator allocator, OpOrder.Group writeOp, byte[] keyBytes)
      {
          super(token);
          assert keyBytes != null;
  
          int size = keyBytes.length;
          this.peer = allocator.allocate(4 + size, writeOp);
          NativeEndianMemoryUtil.setInt(peer, size);
          MemoryUtil.setBytes(peer + 4, keyBytes, 0, size);
      }
  
      @Inline
      int length()
      {
          return NativeEndianMemoryUtil.getInt(peer);
      }
  
      @Inline
      long address()
      {
          return this.peer + 4;
      }
  
      @Override
      public ByteBuffer getKey()
      {
          return MemoryUtil.getByteBuffer(address(), length(), ByteOrder.BIG_ENDIAN);
      }
  
      @Override
      public int getKeyLength()
      {
          return NativeEndianMemoryUtil.getInt(peer);
      }
  
      @Override
      protected ByteSource keyComparableBytes(Version version)
      {
          return ByteSource.ofMemory(address(), length(), version);
      }
  }
  