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org.sourcejammer.util
Class CounterFactory  

java.lang.Object
  org.sourcejammer.util.CounterFactory

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public class CounterFactory

extends java.lang.Object

Title: $FileName: CounterFactory.java$

Version:

$VerNum: 2$

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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.

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counterFile

private java.io.File counterFile

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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

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saveValue

private void saveValue()
                throws java.io.IOException

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readLongValue

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

Reads the value from the file.

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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).

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main

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

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oldCounterNextID

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

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