org.apache.jcs.auxiliary.disk
Class LRUMapJCS

java.lang.Object
  org.apache.jcs.utils.struct.LRUMap
      org.apache.jcs.auxiliary.disk.LRUMapJCS

All Implemented Interfaces:

java.util.Map

Direct Known Subclasses:

BlockDiskKeyStore.LRUMap, IndexedDiskCache.LRUMap

public class LRUMapJCS
extends LRUMap

Extension of LRUMap for logging of removals. Can switch this back to a HashMap easily. This provides some abstraction. It also makes it easy to log overflow.

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Field Summary

Fields inherited from class org.apache.jcs.utils.struct.LRUMap

map

Constructor Summary

LRUMapJCS()
This creates an unbounded version.

LRUMapJCS(int maxKeySize)
This creates a list bounded by the max key size argument.

Method Summary

protected void

processRemovedLRU(java.lang.Object key, java.lang.Object value) This is called when an item is removed from the LRU.

Methods inherited from class org.apache.jcs.utils.struct.LRUMap

clear, containsKey, containsValue, dumpCacheEntries, dumpMap, entrySet, get, getChunkSize, getQuiet, getStatistics, isEmpty, keySet, put, putAll, remove, setChunkSize, size, values, verifyCache, verifyCache

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

LRUMapJCS

public LRUMapJCS()

This creates an unbounded version.

LRUMapJCS

public LRUMapJCS(int maxKeySize)

This creates a list bounded by the max key size argument. The Boundary is enforces by an LRU eviction policy.

This is used in the Disk cache to store keys and purgatory elements if a boundary is requested.

The LRU memory cache uses its own LRU implementation.

Parameters:

maxKeySize -

Method Detail

processRemovedLRU

protected void processRemovedLRU(java.lang.Object key,
                                 java.lang.Object value)

This is called when an item is removed from the LRU. We just log some information.

Overrides:

processRemovedLRU in class LRUMap

Parameters:

key -

value -