org.xnio.XnioFileChannel Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * JBoss, Home of Professional Open Source
 *
 * Copyright 2011 Red Hat, Inc. and/or its affiliates, and individual
 * contributors as indicated by the @author tags.
 *
 * Licensed 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.xnio;

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;
import org.xnio.channels.StreamSinkChannel;
import org.xnio.channels.StreamSourceChannel;

final class XnioFileChannel extends FileChannel {
    private final FileChannel delegate;

    XnioFileChannel(final FileChannel delegate) {
        this.delegate = delegate;
    }

    public int read(final ByteBuffer dst) throws IOException {
        return delegate.read(dst);
    }

    public long read(final ByteBuffer[] dsts, final int offset, final int length) throws IOException {
        return delegate.read(dsts, offset, length);
    }

    public int write(final ByteBuffer src) throws IOException {
        return delegate.write(src);
    }

    public long write(final ByteBuffer[] srcs, final int offset, final int length) throws IOException {
        return delegate.write(srcs, offset, length);
    }

    public long position() throws IOException {
        return delegate.position();
    }

    public FileChannel position(final long newPosition) throws IOException {
        return delegate.position(newPosition);
    }

    public long size() throws IOException {
        return delegate.size();
    }

    public FileChannel truncate(final long size) throws IOException {
        return delegate.truncate(size);
    }

    public void force(final boolean metaData) throws IOException {
        delegate.force(metaData);
    }

    public long transferTo(final long position, final long count, final WritableByteChannel target) throws IOException {
        if (target instanceof StreamSinkChannel) {
            return ((StreamSinkChannel) target).transferFrom(delegate, position, count);
        } else {
            return delegate.transferTo(position, count, target);
        }
    }

    public long transferFrom(final ReadableByteChannel src, final long position, final long count) throws IOException {
        if (src instanceof StreamSourceChannel) {
            return ((StreamSourceChannel) src).transferTo(position, count, delegate);
        } else {
            return delegate.transferFrom(src, position, count);
        }
    }

    public int read(final ByteBuffer dst, final long position) throws IOException {
        return delegate.read(dst, position);
    }

    public int write(final ByteBuffer src, final long position) throws IOException {
        return delegate.write(src, position);
    }

    public MappedByteBuffer map(final MapMode mode, final long position, final long size) throws IOException {
        return delegate.map(mode, position, size);
    }

    public FileLock lock(final long position, final long size, final boolean shared) throws IOException {
        return delegate.lock(position, size, shared);
    }

    public FileLock tryLock(final long position, final long size, final boolean shared) throws IOException {
        return delegate.tryLock(position, size, shared);
    }

    public void implCloseChannel() throws IOException {
        delegate.close();
    }

    FileChannel getDelegate() {
        return delegate;
    }
}