org.apache.pig.backend.datastorage
Class SeekableInputStream

java.lang.Object
  java.io.InputStream
      org.apache.pig.backend.datastorage.SeekableInputStream

All Implemented Interfaces:

Closeable

Direct Known Subclasses:

HSeekableInputStream

public abstract class SeekableInputStream
extends InputStream

Unix-like API for an input stream that supports random access.

Nested Class Summary

static class

SeekableInputStream.FLAGS

Constructor Summary

SeekableInputStream()

Method Summary

abstract void	seek(long offset, SeekableInputStream.FLAGS whence) Seeks to a given offset as specified by whence flags.
abstract long	tell() Returns current offset

Methods inherited from class java.io.InputStream

available, close, mark, markSupported, read, read, read, reset, skip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SeekableInputStream

public SeekableInputStream()

Method Detail

seek

public abstract void seek(long offset,
                          SeekableInputStream.FLAGS whence)
                   throws IOException

Seeks to a given offset as specified by whence flags. If whence is SEEK_SET, offset is added to beginning of stream If whence is SEEK_CUR, offset is added to current position inside stream If whence is SEEK_END, offset is added to end of file position

Parameters:

offset -

whence -

Throws:

IOException

tell

public abstract long tell()
                   throws IOException

Returns current offset

Returns:

offset

Throws:

IOException