Package edu.rit.pj.cluster

Class BackendFileOutputStream

java.lang.Object

java.io.OutputStream

edu.rit.pj.cluster.BackendFileOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class BackendFileOutputStream
extends OutputStream

Class BackendFileOutputStream provides an object in a job backend process that writes a sequential file in the job frontend process. A backend file output stream is not constructed directly, rather it is created by a factory method in class BackendFileWriter.

Note: Class BackendFileOutputStream does not do any buffering. Each method call sends a message to and receives a message from the job frontend. Consider layering a BufferedOutputStream on top of the BackendFileOutputStream.

Version:

05-Nov-2006

Author:

Alan Kaminsky

Method Summary

Modifier and Type	Method	Description
void	close()	Close this output stream.
void	flush()	Flush this output stream.
void	write(byte[] buf)	Write the given byte array to this output stream.
void	write(byte[] buf, int off, int len)	Write a portion of the given byte array to this output stream.
void	write(int b)	Write the given byte to this output stream.

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

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

Method Details

write

public void write(int b)
           throws IOException

Write the given byte to this output stream. Only the least significant eight bits are written.

Specified by:

write in class OutputStream

Parameters:

b - Byte.

Throws:

IOException - Thrown if an I/O error occurred.

IOException - if any.

write

public void write(byte[] buf)
           throws IOException

Write the given byte array to this output stream.

Overrides:

write in class OutputStream

Parameters:

buf - Byte array.

Throws:

NullPointerException - (unchecked exception) Thrown if buf is null.

IOException - Thrown if an I/O error occurred.

IOException - if any.

write

public void write(byte[] buf,
 int off,
 int len)
           throws IOException

Write a portion of the given byte array to this output stream.

Overrides:

write in class OutputStream

Throws:

NullPointerException - (unchecked exception) Thrown if buf is null.

IndexOutOfBoundsException - (unchecked exception) Thrown if off < 0, len < 0, or off+len > buf.length.

IOException - Thrown if an I/O error occurred.

flush

public void flush()
           throws IOException

Flush this output stream.

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream

Throws:

IOException - Thrown if an I/O error occurred.

IOException - if any.

close

public void close()
           throws IOException

Close this output stream.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class OutputStream

Throws:

IOException - Thrown if an I/O error occurred.

IOException - if any.