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java.lang.Objectorg.h2.util.CacheLRU
public class CacheLRU
A cache implementation based on the last recently used (LRU) algorithm.
| Method Summary | |
|---|---|
void |
clear()
Clear the cache. |
CacheObject |
find(int pos)
Get an element from the cache if it is available. |
CacheObject |
get(int pos)
Get an element in the cache if it is available. |
java.util.ArrayList<CacheObject> |
getAllChanged()
Get all objects in the cache that have been changed. |
static Cache |
getCache(CacheWriter writer,
java.lang.String cacheType,
int cacheSize)
Create a cache of the given type and size. |
int |
getMaxMemory()
Get the maximum memory to be used. |
int |
getMemory()
Get the used size in KB. |
void |
put(CacheObject rec)
Add an element to the cache. |
boolean |
remove(int pos)
Remove an object from the cache. |
void |
setMaxMemory(int maxKb)
Set the maximum memory to be used by this cache. |
CacheObject |
update(int pos,
CacheObject rec)
Update an element in the cache. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Method Detail |
|---|
public static Cache getCache(CacheWriter writer,
java.lang.String cacheType,
int cacheSize)
writer - the cache writercacheType - the cache typecacheSize - the size
public void clear()
Cache
clear in interface Cachepublic void put(CacheObject rec)
Cache
put in interface Cacherec - the object
public CacheObject update(int pos,
CacheObject rec)
Cache
update in interface Cachepos - the unique key of the elementrec - the element
public boolean remove(int pos)
Cache
remove in interface Cachepos - the unique key of the element
public CacheObject find(int pos)
Cache
find in interface Cachepos - the unique key of the element
public CacheObject get(int pos)
Cache
get in interface Cachepos - the unique key of the element
public java.util.ArrayList<CacheObject> getAllChanged()
Cache
getAllChanged in interface Cachepublic void setMaxMemory(int maxKb)
Cache
setMaxMemory in interface CachemaxKb - the maximum size in KBpublic int getMaxMemory()
Cache
getMaxMemory in interface Cachepublic int getMemory()
Cache
getMemory in interface Cache
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