edu.iu.dsc.tws.data.fs.local

Class LocalDataInputStream

java.lang.Object

java.io.InputStream

edu.iu.dsc.tws.api.data.FSDataInputStream

edu.iu.dsc.tws.data.fs.local.LocalDataInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class LocalDataInputStream
extends FSDataInputStream

The LocalDataInputStream class is a wrapper class for a data input stream to the local file system.

Constructor Summary

Constructors

Constructor and Description
LocalDataInputStream(java.io.File file) Constructs a new LocalDataInputStream object from a given File object.

Method Summary

Modifier and Type	Method and Description
int	available()
void	close()
java.nio.channels.FileChannel	getChannel()
long	getPos() Gets the current position in the input stream.
java.io.Reader	getReader()
int	read()
int	read(byte[] buffer, int offset, int length)
void	seek(long desired) Seek to the given offset from the start of the file.
long	skip(long n)

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalDataInputStream

public LocalDataInputStream(java.io.File file)
                     throws java.io.IOException

Constructs a new LocalDataInputStream object from a given File object.

Parameters:

file - The File the data stream is read from

Throws:

java.io.IOException - Thrown if the data input stream cannot be created.

Method Detail

seek

public void seek(long desired)
          throws java.io.IOException

Description copied from class: FSDataInputStream

Seek to the given offset from the start of the file. The next read() will be from that location. Can't seek past the end of the file.

Specified by:

seek in class FSDataInputStream

Parameters:

desired - the desired offset

Throws:

java.io.IOException - Thrown if an error occurred while seeking inside the input stream.

getPos

public long getPos()
            throws java.io.IOException

Description copied from class: FSDataInputStream

Gets the current position in the input stream.

Specified by:

getPos in class FSDataInputStream

Returns:

current position in the input stream

Throws:

java.io.IOException - Thrown if an I/O error occurred in the underlying stream implementation while accessing the stream's position.

read

public int read()
         throws java.io.IOException

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException

getReader

public java.io.Reader getReader()
                         throws java.io.FileNotFoundException

Specified by:

getReader in class FSDataInputStream

Throws:

java.io.FileNotFoundException

read

public int read(byte[] buffer,
                int offset,
                int length)
         throws java.io.IOException

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException

available

public int available()
              throws java.io.IOException

Overrides:

available in class java.io.InputStream

Throws:

java.io.IOException

skip

public long skip(long n)
          throws java.io.IOException

Overrides:

skip in class java.io.InputStream

Throws:

java.io.IOException

getChannel

public java.nio.channels.FileChannel getChannel()