| /* |
| * 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; |
| |
| 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); |
| MemoryUtil.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); |
| MemoryUtil.setInt(peer, size); |
| MemoryUtil.setBytes(peer + 4, keyBytes, 0, size); |
| } |
| |
| @Inline |
| int length() |
| { |
| return MemoryUtil.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 MemoryUtil.getInt(peer); |
| } |
| |
| @Override |
| protected ByteSource keyComparableBytes(Version version) |
| { |
| return ByteSource.ofMemory(address(), length(), version); |
| } |
| } |