Class BabylonFileTransfer

java.lang.Object
  java.lang.Thread
      BabylonFileTransfer

All Implemented Interfaces:

java.lang.Runnable

Direct Known Subclasses:

BabylonClientFileTransfer, BabylonServerFileTransfer

public abstract class BabylonFileTransfer
extends java.lang.Thread

An abstract class for file transfers by the client or server. Used as a superclass for BabylonServerFileTransfer and BabylonClientFileTransfer, this class contains common data items and methods for reading and writing the file.

Author:

Andy McLaughlin

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

protected int	blockSize
protected static int	DEFAULT_BLOCKSIZE
protected int	expireMins
protected long	expiryTime
protected java.lang.String	fileName
protected boolean	receivedAll
protected int	receivedBlocks
protected java.io.File	tmpFile
protected int	totalBlocks
protected long	totalSize
protected java.io.RandomAccessFile	transFile

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

BabylonFileTransfer(java.lang.String fn, long ts, int tb, int bs, int minutes)

Method Summary

protected byte[]	getFileBlock(int blockNumber) Read the requested block number from the file and return the data.
protected void	putFileBlock(int blockNumber, byte[] data) Write the requested block number to the file using the supplied data.
abstract void	run()

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_BLOCKSIZE

protected static final int DEFAULT_BLOCKSIZE

See Also:

Constant Field Values

fileName

protected java.lang.String fileName

totalSize

protected long totalSize

totalBlocks

protected int totalBlocks

blockSize

protected int blockSize

expireMins

protected int expireMins

expiryTime

protected long expiryTime

tmpFile

protected java.io.File tmpFile

transFile

protected java.io.RandomAccessFile transFile

receivedBlocks

protected int receivedBlocks

receivedAll

protected boolean receivedAll

Constructor Detail

BabylonFileTransfer

public BabylonFileTransfer(java.lang.String fn,
                           long ts,
                           int tb,
                           int bs,
                           int minutes)

Method Detail

run

public abstract void run()

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

getFileBlock

protected byte[] getFileBlock(int blockNumber)
                       throws java.lang.IndexOutOfBoundsException,
                              java.io.IOException

Read the requested block number from the file and return the data.

Throws:

java.lang.IndexOutOfBoundsException

java.io.IOException

putFileBlock

protected void putFileBlock(int blockNumber,
                            byte[] data)
                     throws java.lang.IndexOutOfBoundsException,
                            java.io.IOException

Write the requested block number to the file using the supplied data.

Throws:

java.lang.IndexOutOfBoundsException

java.io.IOException