lazyj
Class StringFactory

java.lang.Object
  lazyj.StringFactory

public final class StringFactory
extends java.lang.Object

Keep references to common strings to avoid filling the memory with garbage. We don't use String.intern() any more because it seems to never clean up. Instead it is now relaying on a WeakHashMap.

Since:

Aug 10, 2007 (1.0.2)

Author:

costing

See Also:

String.intern()

Constructor Summary

StringFactory()

Method Summary

static void	clear() Deprecated.
static java.lang.String	get(byte[] vb) Get the global string pointer for this byte array
static java.lang.String	get(char[] vc) Get the global string pointer for this char array
static java.lang.String	get(java.lang.String s) Get the global string pointer for this value
static long	getAccessCount() Get the total number of accesses to this cache
static int	getCacheSize() Statistics function: the number of strings in the cache.
static double	getHitRatio() Calculate the cache efficiency (hits / total requests)
static double	getIgnoreRatio() Calculate the percentage of requests that were ignored because of size limits.
static void	resetHitCounters() Clear the counters

Methods inherited from class java.lang.Object

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

Constructor Detail

StringFactory

public StringFactory()

Method Detail

get

public static java.lang.String get(byte[] vb)

Get the global string pointer for this byte array

Parameters:

vb -

Returns:

the global string pointer

get

public static java.lang.String get(char[] vc)

Get the global string pointer for this char array

Parameters:

vc -

Returns:

the global string pointer

get

public static java.lang.String get(java.lang.String s)

Get the global string pointer for this value

Parameters:

s -

Returns:

the global string pointer for an object having the same value

getCacheSize

public static int getCacheSize()

Statistics function: the number of strings in the cache.

Returns:

the number of strings in the cache

getHitRatio

public static double getHitRatio()

Calculate the cache efficiency (hits / total requests)

Returns:

cache efficiency

getIgnoreRatio

public static double getIgnoreRatio()

Calculate the percentage of requests that were ignored because of size limits.

Returns:

ignore ratio

getAccessCount

public static long getAccessCount()

Get the total number of accesses to this cache

Returns:

the number of accesses to this cache

resetHitCounters

public static void resetHitCounters()

Clear the counters

clear

@Deprecated
public static void clear()

Deprecated.

Clear this cache structure