Package at.favre.lib.idmask

Class Cache.SimpleLruMemCache

java.lang.Object

at.favre.lib.idmask.Cache.SimpleLruMemCache

All Implemented Interfaces:

Cache

Enclosing interface:

Cache

public static final class Cache.SimpleLruMemCache
extends Object
implements Cache

Simple In-Memory LRU cache. Per default has CACHE_SIZE size for mask & unmask cache.

See: https://en.wikipedia.org/wiki/Cache_replacement_policies#Least_recently_used_(LRU)

Nested Class Summary

Nested classes/interfaces inherited from interface at.favre.lib.idmask.Cache

Cache.SimpleLruMemCache

Constructor Summary

Constructors

Constructor	Description
SimpleLruMemCache()
SimpleLruMemCache(int size)

Method Summary

Modifier and Type	Method	Description
void	cache(byte[] originalId, String encoded)	Puts a new id and it's encoded form in the cache.
void	clear()	Clears internal cache.
byte[]	getBytes(String encoded)	Retrieve the originalId form of given encoded id.
String	getEncoded(byte[] originalId)	Retrieve the encoded form of given original id.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleLruMemCache

public SimpleLruMemCache()

SimpleLruMemCache

public SimpleLruMemCache(int size)

Method Detail

cache

public void cache(byte[] originalId,
                  String encoded)

Description copied from interface: Cache

Puts a new id and it's encoded form in the cache.

Specified by:

cache in interface Cache

Parameters:

originalId - the id

encoded - the masked/encoded form of originalId

getEncoded

public String getEncoded(byte[] originalId)

Description copied from interface: Cache

Retrieve the encoded form of given original id. This is used when encoding/masking.

Specified by:

getEncoded in interface Cache

Parameters:

originalId - to get cache content for

Returns:

encoded version of originalId if found, null otherwise

getBytes

public byte[] getBytes(String encoded)

Description copied from interface: Cache

Retrieve the originalId form of given encoded id. This is used when decoding/unmasking.

Specified by:

getBytes in interface Cache

Parameters:

encoded - to get cache content for

Returns:

original id of encoded id if found, null otherwise

clear

public void clear()

Description copied from interface: Cache

Clears internal cache.

Specified by:

clear in interface Cache