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Java Source Code / Java Documentation » Development » Jakarta ORO » org.apache.oro.util 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.oro.util.GenericCache
      org.apache.oro.util.CacheLRU

CacheLRU
final public class CacheLRU extends GenericCache (Code)
This class is a GenericCache subclass implementing an LRU (Least Recently Used) cache replacement policy. In other words, values are added to the cache until it becomes full. Once the cache is full, when a new value is added to the cache, it replaces the least recently used value currently in the cache. This is probably the best general purpose cache replacement policy.
version:
   @version@
since:
   1.0
See Also:   GenericCache



Constructor Summary
public  CacheLRU(int capacity)
     Creates a CacheLRU instance with a given cache capacity.
public  CacheLRU()
    

Method Summary
final public synchronized  voidaddElement(Object key, Object value)
     Adds a value to the cache.
public synchronized  ObjectgetElement(Object key)
    


Constructor Detail
CacheLRU
public CacheLRU(int capacity)(Code)
Creates a CacheLRU instance with a given cache capacity.


Parameters:
  capacity - The capacity of the cache.




CacheLRU
public CacheLRU()(Code)
Same as:
 CacheLRU(GenericCache.DEFAULT_CAPACITY);
 




Method Detail
addElement
final public synchronized void addElement(Object key, Object value)(Code)
Adds a value to the cache. If the cache is full, when a new value is added to the cache, it replaces the least recently used value in the cache (i.e., LRU).


Parameters:
  key - The key referencing the value added to the cache.
Parameters:
  value - The value to add to the cache.




getElement
public synchronized Object getElement(Object key)(Code)



Fields inherited from org.apache.oro.util.GenericCache
final public static int DEFAULT_CAPACITY(Code)(Java Doc)
GenericCacheEntry[] _cache(Code)(Java Doc)
int _numEntries(Code)(Java Doc)
HashMap _table(Code)(Java Doc)

Methods inherited from org.apache.oro.util.GenericCache
abstract public void addElement(Object key, Object value)(Code)(Java Doc)
final public int capacity()(Code)(Java Doc)
public synchronized Object getElement(Object key)(Code)(Java Doc)
final public boolean isFull()(Code)(Java Doc)
final public Iterator keys()(Code)(Java Doc)
final public int size()(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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