| /* |
| * 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.security.MessageDigest; |
| |
| import org.apache.cassandra.config.CFMetaData; |
| import org.apache.cassandra.db.composites.CellName; |
| import org.apache.cassandra.serializers.MarshalException; |
| import org.apache.cassandra.utils.FBUtilities; |
| import org.apache.cassandra.utils.concurrent.OpOrder; |
| import org.apache.cassandra.utils.memory.AbstractAllocator; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| import org.apache.cassandra.utils.memory.MemtableAllocator; |
| |
| public class BufferDeletedCell extends BufferCell implements DeletedCell |
| { |
| public BufferDeletedCell(CellName name, int localDeletionTime, long timestamp) |
| { |
| this(name, ByteBufferUtil.bytes(localDeletionTime), timestamp); |
| } |
| |
| public BufferDeletedCell(CellName name, ByteBuffer value, long timestamp) |
| { |
| super(name, value, timestamp); |
| } |
| |
| @Override |
| public Cell withUpdatedName(CellName newName) |
| { |
| return new BufferDeletedCell(newName, value, timestamp); |
| } |
| |
| @Override |
| public Cell withUpdatedTimestamp(long newTimestamp) |
| { |
| return new BufferDeletedCell(name, value, newTimestamp); |
| } |
| |
| @Override |
| public boolean isLive() |
| { |
| return false; |
| } |
| |
| @Override |
| public boolean isLive(long now) |
| { |
| return false; |
| } |
| |
| @Override |
| public int getLocalDeletionTime() |
| { |
| return value().getInt(value.position()); |
| } |
| |
| @Override |
| public Cell reconcile(Cell cell) |
| { |
| if (cell instanceof DeletedCell) |
| return super.reconcile(cell); |
| return cell.reconcile(this); |
| } |
| |
| @Override |
| public DeletedCell localCopy(CFMetaData metadata, AbstractAllocator allocator) |
| { |
| return new BufferDeletedCell(name.copy(metadata, allocator), allocator.clone(value), timestamp); |
| } |
| |
| @Override |
| public DeletedCell localCopy(CFMetaData metadata, MemtableAllocator allocator, OpOrder.Group opGroup) |
| { |
| return allocator.clone(this, metadata, opGroup); |
| } |
| |
| @Override |
| public int serializationFlags() |
| { |
| return ColumnSerializer.DELETION_MASK; |
| } |
| |
| @Override |
| public void validateFields(CFMetaData metadata) throws MarshalException |
| { |
| validateName(metadata); |
| if (value().remaining() != 4) |
| throw new MarshalException("A tombstone value should be 4 bytes long"); |
| if (getLocalDeletionTime() < 0) |
| throw new MarshalException("The local deletion time should not be negative"); |
| } |
| |
| @Override |
| public void updateDigest(MessageDigest digest) |
| { |
| digest.update(name().toByteBuffer().duplicate()); |
| |
| FBUtilities.updateWithLong(digest, timestamp()); |
| FBUtilities.updateWithByte(digest, serializationFlags()); |
| } |
| } |