| /* |
| * 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.io.util; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.cassandra.io.compress.BufferType; |
| |
| class SimpleChunkReader extends AbstractReaderFileProxy implements ChunkReader |
| { |
| private final int bufferSize; |
| private final BufferType bufferType; |
| |
| SimpleChunkReader(ChannelProxy channel, long fileLength, BufferType bufferType, int bufferSize) |
| { |
| super(channel, fileLength); |
| this.bufferSize = bufferSize; |
| this.bufferType = bufferType; |
| } |
| |
| @Override |
| public void readChunk(long position, ByteBuffer buffer) |
| { |
| buffer.clear(); |
| channel.read(buffer, position); |
| buffer.flip(); |
| } |
| |
| @Override |
| public int chunkSize() |
| { |
| return bufferSize; |
| } |
| |
| @Override |
| public BufferType preferredBufferType() |
| { |
| return bufferType; |
| } |
| |
| @Override |
| public Rebufferer instantiateRebufferer() |
| { |
| return new BufferManagingRebufferer.Unaligned(this); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return String.format("%s(%s - chunk length %d, data length %d)", |
| getClass().getSimpleName(), |
| channel.filePath(), |
| bufferSize, |
| fileLength()); |
| } |
| } |