content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.underfs.hdfs;
  
  import org.apache.hadoop.fs.FSDataInputStream;
  import org.apache.hadoop.fs.PositionedReadable;
  import org.apache.hadoop.fs.Seekable;
  
  import java.io.FilterInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  
  public class PreadSeekableStream extends FilterInputStream implements Seekable, PositionedReadable {
    protected PreadSeekableStream(InputStream in) {
      super(in);
    }
  
    @Override
    public int read(long position, byte[] bytes, int offset, int length) throws IOException {
      return ((FSDataInputStream) in).read(position, bytes, offset, length);
    }
  
    @Override
    public void readFully(long position, byte[] bytes, int offset, int length) throws IOException {
      ((FSDataInputStream) in).readFully(position, bytes, offset, length);
    }
  
    @Override
    public void readFully(long position, byte[] bytes) throws IOException {
      ((FSDataInputStream) in).readFully(position, bytes);
    }
  
    @Override
    public void seek(long position) throws IOException {
      ((FSDataInputStream) in).seek(position);
    }
  
    @Override
    public long getPos() throws IOException {
      return ((FSDataInputStream) in).getPos();
    }
  
    @Override
    public boolean seekToNewSource(long position) throws IOException {
      return ((FSDataInputStream) in).seekToNewSource(position);
    }
  }
  