/*
* 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.security.MessageDigest;
import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.serializers.MarshalException;
import org.apache.cassandra.utils.FBUtilities;
import org.apache.cassandra.utils.ObjectSizes;
import org.apache.cassandra.utils.concurrent.OpOrder;
import org.apache.cassandra.utils.memory.AbstractAllocator;
import org.apache.cassandra.utils.memory.MemoryUtil;
import org.apache.cassandra.utils.memory.MemtableAllocator;
import org.apache.cassandra.utils.memory.NativeAllocator;
public class NativeDeletedCell extends NativeCell implements DeletedCell
{
private static final long SIZE = ObjectSizes.measure(new NativeDeletedCell());
private NativeDeletedCell()
{}
public NativeDeletedCell(NativeAllocator allocator, OpOrder.Group writeOp, DeletedCell copyOf)
{
super(allocator, writeOp, copyOf);
}
@Override
public Cell reconcile(Cell cell)
{
if (cell instanceof DeletedCell)
return super.reconcile(cell);
return cell.reconcile(this);
}
@Override
public boolean isLive()
{
return false;
}
@Override
public boolean isLive(long now)
{
return false;
}
@Override
public int getLocalDeletionTime()
{
int v = getInt(valueStartOffset());
return MemoryUtil.INVERTED_ORDER ? Integer.reverseBytes(v) : v;
}
@Override
public int serializationFlags()
{
return ColumnSerializer.DELETION_MASK;
}
@Override
public void validateFields(CFMetaData metadata) throws MarshalException
{
validateName(metadata);
if ((int) (internalSize() - valueStartOffset()) != 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)
{
updateWithName(digest);
FBUtilities.updateWithLong(digest, timestamp());
FBUtilities.updateWithByte(digest, serializationFlags());
}
@Override
public DeletedCell localCopy(CFMetaData metadata, AbstractAllocator allocator)
{
return new BufferDeletedCell(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 boolean equals(Cell cell)
{
return timestamp() == cell.timestamp() && getLocalDeletionTime() == cell.getLocalDeletionTime() && name().equals(cell.name());
}
@Override
public long unsharedHeapSizeExcludingData()
{
return SIZE;
}
@Override
public long unsharedHeapSize()
{
return SIZE;
}
}