org.apache.flink.runtime.state.filesystem

Class FsSegmentDataInputStream

java.lang.Object

java.io.InputStream

org.apache.flink.core.fs.FSDataInputStream

org.apache.flink.core.fs.FSDataInputStreamWrapper

org.apache.flink.runtime.state.filesystem.FsSegmentDataInputStream

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.flink.core.fs.WrappingProxyCloseable<org.apache.flink.core.fs.FSDataInputStream>, org.apache.flink.util.WrappingProxy<org.apache.flink.core.fs.FSDataInputStream>

public class FsSegmentDataInputStream
extends org.apache.flink.core.fs.FSDataInputStreamWrapper
implements org.apache.flink.core.fs.WrappingProxyCloseable<org.apache.flink.core.fs.FSDataInputStream>

This class is a WrappingProxy for FSDataInputStream that is used to read from a file segment. It is opened with a starting position of the file. It treats the argument of seek(long) as an offset relative to the starting position, rather than an absolute value.

Field Summary

Fields inherited from class org.apache.flink.core.fs.FSDataInputStreamWrapper

inputStream

Constructor Summary

Constructors

Constructor and Description
FsSegmentDataInputStream(org.apache.flink.core.fs.FSDataInputStream inputStream, long startingPosition, long segmentSize)

Method Summary

Modifier and Type	Method and Description
long	getPos()
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
void	reset()
void	seek(long desired)
long	skip(long n)

Methods inherited from class org.apache.flink.core.fs.FSDataInputStreamWrapper

available, close, getWrappedDelegate

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.io.Closeable

close

Methods inherited from interface org.apache.flink.util.WrappingProxy

getWrappedDelegate

Constructor Detail

FsSegmentDataInputStream

public FsSegmentDataInputStream(org.apache.flink.core.fs.FSDataInputStream inputStream,
                                long startingPosition,
                                long segmentSize)
                         throws IOException

Throws:

IOException

Method Detail

read

public int read()
         throws IOException

Overrides:

read in class org.apache.flink.core.fs.FSDataInputStreamWrapper

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class org.apache.flink.core.fs.FSDataInputStreamWrapper

Throws:

IOException

read

public int read(byte[] b,
                int off,
                int len)
         throws IOException

Overrides:

read in class org.apache.flink.core.fs.FSDataInputStreamWrapper

Throws:

IOException

seek

public void seek(long desired)
          throws IOException

Overrides:

seek in class org.apache.flink.core.fs.FSDataInputStreamWrapper

Throws:

IOException

getPos

public long getPos()
            throws IOException

Overrides:

getPos in class org.apache.flink.core.fs.FSDataInputStreamWrapper

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class org.apache.flink.core.fs.FSDataInputStreamWrapper

Throws:

IOException

mark

public void mark(int readlimit)

Overrides:

mark in class org.apache.flink.core.fs.FSDataInputStreamWrapper

reset

public void reset()
           throws IOException

Overrides:

reset in class org.apache.flink.core.fs.FSDataInputStreamWrapper

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class org.apache.flink.core.fs.FSDataInputStreamWrapper