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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 | |
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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. |
void |
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 |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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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 Cache
public void put(CacheObject rec)
Cache
put
in interface Cache
rec
- the objectpublic CacheObject update(int pos, CacheObject rec)
Cache
update
in interface Cache
pos
- the unique key of the elementrec
- the element
public void remove(int pos)
Cache
remove
in interface Cache
pos
- the unique key of the elementpublic CacheObject find(int pos)
Cache
find
in interface Cache
pos
- the unique key of the element
public CacheObject get(int pos)
Cache
get
in interface Cache
pos
- the unique key of the element
public java.util.ArrayList<CacheObject> getAllChanged()
Cache
getAllChanged
in interface Cache
public void setMaxMemory(int maxKb)
Cache
setMaxMemory
in interface Cache
maxKb
- the maximum size in KBpublic int getMaxMemory()
Cache
getMaxMemory
in interface Cache
public int getMemory()
Cache
getMemory
in interface Cache
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