Package org.apache.jackrabbit.spi.commons.util

Class StringCache

java.lang.Object

org.apache.jackrabbit.spi.commons.util.StringCache

public class StringCache
extends Object

A few String utility functions.

Field Summary

Fields

Modifier and Type	Field	Description
static final boolean	OBJECT_CACHE
static final int	OBJECT_CACHE_SIZE

Method Summary

Modifier and Type	Method	Description
static String	cache(String s)	Get the string from the cache if possible.
static void	clearCache()	Clear the cache.
static String	fromCacheOrNew(String s)	Get a string from the cache, and if no such string has been found, create a new one with only this content.

Methods inherited from class java.lang.Object

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

Field Details

OBJECT_CACHE

public static final boolean OBJECT_CACHE

OBJECT_CACHE_SIZE

public static final int OBJECT_CACHE_SIZE

Method Details

cache

public static String cache(String s)

Get the string from the cache if possible. If the string has not been found, it is added to the cache. If there is such a string in the cache, that one is returned.

Parameters:

s - the original string

Returns:

a string with the same content, if possible from the cache

fromCacheOrNew

public static String fromCacheOrNew(String s)

Get a string from the cache, and if no such string has been found, create a new one with only this content. This solves out of memory problems if the string is a substring of another, large string. In Java, strings are shared, which could lead to memory problems. This avoid such problems.

Parameters:

s - the string

Returns:

a string that is guaranteed not be a substring of a large string

clearCache

public static void clearCache()

Clear the cache. This method is used for testing.