org.sourcejammer.util
Class CounterFactory

java.lang.Object
  |
  +--org.sourcejammer.util.CounterFactory

public class CounterFactory

extends java.lang.Object

Title: $FileName: CounterFactory.java$

Version:

$VerNum: 2$

Author:

$AuthorName: Rob MacGrogan$

$Description: $
$KeyWordsOff: $

Field Summary

private java.io.File	counterFile
private static java.util.Hashtable	counters A cache of counter objects.
private long	value

Constructor Summary

private

CounterFactory(java.io.File counterFile) Constructs the CounterFactory from the specified file. If the file is not found, this method attempts to create it. If the file found is a Counter object, this method attempts to read the Counter object and convert it to a CounterFactory.

Method Summary

private long	getNextValue()
static long	getNextValue(java.io.File counterFile) Returns the next id of the counter stored at the specified location.
static void	main(java.lang.String[] args)
private static long	oldCounterNextID(java.io.File fl)
private long	readLongValue() Reads the value from the file.
private void	saveValue()

Methods inherited from class java.lang.Object

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

Field Detail

counters

private static java.util.Hashtable counters

A cache of counter objects.

counterFile

private java.io.File counterFile

value

private long value

Constructor Detail

CounterFactory

private CounterFactory(java.io.File counterFile)
                throws java.io.IOException

Constructs the CounterFactory from the specified file.

If the file is not found, this method attempts to create it.

If the file found is a Counter object, this method attempts to read the Counter object and convert it to a CounterFactory.

Method Detail

getNextValue

private long getNextValue()
                   throws java.io.IOException

java.io.IOException

saveValue

private void saveValue()
                throws java.io.IOException

java.io.IOException

readLongValue

private long readLongValue()
                    throws java.io.FileNotFoundException,
                           java.io.IOException,
                           java.lang.ClassNotFoundException

Reads the value from the file.

java.io.FileNotFoundException

java.io.IOException

java.lang.ClassNotFoundException

getNextValue

public static long getNextValue(java.io.File counterFile)
                         throws java.io.IOException

Returns the next id of the counter stored at the specified location. If the counter does not exist, this method will attempt to create it and return the initial value (0).

java.io.IOException

main

public static void main(java.lang.String[] args)

oldCounterNextID

private static long oldCounterNextID(java.io.File fl)
                              throws java.io.IOException

java.io.IOException