| /* |
| * 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 long unsharedHeapSizeExcludingData() |
| { |
| return SIZE; |
| } |
| |
| @Override |
| public long unsharedHeapSize() |
| { |
| return SIZE; |
| } |
| } |