| /* |
| * 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.utils.memory; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.cassandra.db.*; |
| import org.apache.cassandra.db.rows.*; |
| import org.apache.cassandra.utils.concurrent.OpOrder; |
| |
| public abstract class MemtableBufferAllocator extends MemtableAllocator |
| { |
| protected MemtableBufferAllocator(SubAllocator onHeap, SubAllocator offHeap) |
| { |
| super(onHeap, offHeap); |
| } |
| |
| public Row.Builder rowBuilder(OpOrder.Group writeOp) |
| { |
| return allocator(writeOp).cloningBTreeRowBuilder(); |
| } |
| |
| public DecoratedKey clone(DecoratedKey key, OpOrder.Group writeOp) |
| { |
| return new BufferDecoratedKey(key.getToken(), allocator(writeOp).clone(key.getKey())); |
| } |
| |
| public abstract ByteBuffer allocate(int size, OpOrder.Group opGroup); |
| |
| protected AbstractAllocator allocator(OpOrder.Group writeOp) |
| { |
| return new ContextAllocator(writeOp, this); |
| } |
| } |