| /* |
| * 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.filesystem; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.MappedByteBuffer; |
| import java.nio.channels.FileChannel; |
| import java.nio.channels.FileLock; |
| import java.nio.channels.ReadableByteChannel; |
| import java.nio.channels.WritableByteChannel; |
| |
| public class ForwardingFileChannel extends FileChannel |
| { |
| protected final FileChannel delegate; |
| |
| public ForwardingFileChannel(FileChannel delegate) |
| { |
| this.delegate = delegate; |
| } |
| |
| protected FileChannel delegate() |
| { |
| return delegate; |
| } |
| |
| @Override |
| public int read(ByteBuffer dst) throws IOException |
| { |
| return delegate().read(dst); |
| } |
| |
| @Override |
| public long read(ByteBuffer[] dsts, int offset, int length) throws IOException |
| { |
| return delegate().read(dsts, offset, length); |
| } |
| |
| @Override |
| public int write(ByteBuffer src) throws IOException |
| { |
| return delegate().write(src); |
| } |
| |
| @Override |
| public long write(ByteBuffer[] srcs, int offset, int length) throws IOException |
| { |
| return delegate().write(srcs, offset, length); |
| } |
| |
| @Override |
| public long position() throws IOException |
| { |
| return delegate().position(); |
| } |
| |
| @Override |
| public FileChannel position(long newPosition) throws IOException |
| { |
| return delegate().position(newPosition); |
| } |
| |
| @Override |
| public long size() throws IOException |
| { |
| return delegate().size(); |
| } |
| |
| @Override |
| public FileChannel truncate(long size) throws IOException |
| { |
| return delegate().truncate(size); |
| } |
| |
| @Override |
| public void force(boolean metaData) throws IOException |
| { |
| delegate().force(metaData); |
| } |
| |
| @Override |
| public long transferTo(long position, long count, WritableByteChannel target) throws IOException |
| { |
| return delegate().transferTo(position, count, target); |
| } |
| |
| @Override |
| public long transferFrom(ReadableByteChannel src, long position, long count) throws IOException |
| { |
| return delegate().transferFrom(src, position, count); |
| } |
| |
| @Override |
| public int read(ByteBuffer dst, long position) throws IOException |
| { |
| return delegate().read(dst, position); |
| } |
| |
| @Override |
| public int write(ByteBuffer src, long position) throws IOException |
| { |
| return delegate().write(src, position); |
| } |
| |
| @Override |
| public MappedByteBuffer map(MapMode mode, long position, long size) throws IOException |
| { |
| return delegate().map(mode, position, size); |
| } |
| |
| @Override |
| public FileLock lock(long position, long size, boolean shared) throws IOException |
| { |
| return delegate().lock(position, size, shared); |
| } |
| |
| @Override |
| public FileLock tryLock(long position, long size, boolean shared) throws IOException |
| { |
| return delegate().tryLock(position, size, shared); |
| } |
| |
| @Override |
| protected void implCloseChannel() throws IOException |
| { |
| // .close(), and .isOpen() are "final", so need to leverage implCloseChannel |
| // to close the underline channel |
| delegate().close(); |
| } |
| } |