/*
* 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");
}
public boolean equals(Cell cell)
{
return timestamp() == cell.timestamp() && getLocalDeletionTime() == cell.getLocalDeletionTime() && name().equals(cell.name());
}
@Override
public void updateDigest(MessageDigest digest)
{
digest.update(name().toByteBuffer().duplicate());
FBUtilities.updateWithLong(digest, timestamp());
FBUtilities.updateWithByte(digest, serializationFlags());
}
}