net.sf.ehcache.store
Class LruMemoryStore.SpoolingLRUMap

java.lang.Object
  org.apache.commons.collections.SequencedHashMap
      org.apache.commons.collections.LRUMap
          net.sf.ehcache.store.LruMemoryStore.SpoolingLRUMap

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, java.util.Map

Enclosing class:

LruMemoryStore

public final class LruMemoryStore.SpoolingLRUMap
extends org.apache.commons.collections.LRUMap

An LRU Map implementation based on Apache Commons LRUMap.

This is used if LinkedHashMap is not found in the classpath. LinkedHashMap is part of JDK

See Also:

Serialized Form

Constructor Summary

LruMemoryStore.SpoolingLRUMap()
Constructor.

Method Summary

protected void

processRemovedLRU(java.lang.Object key, java.lang.Object value) Called after the element has been removed.

Methods inherited from class org.apache.commons.collections.LRUMap

get, getMaximumSize, put, readExternal, removeLRU, setMaximumSize, writeExternal

Methods inherited from class org.apache.commons.collections.SequencedHashMap

clear, clone, containsKey, containsValue, entrySet, equals, get, getFirst, getFirstKey, getFirstValue, getLast, getLastKey, getLastValue, getValue, hashCode, indexOf, isEmpty, iterator, keySet, lastIndexOf, putAll, remove, remove, sequence, size, toString, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

LruMemoryStore.SpoolingLRUMap

public LruMemoryStore.SpoolingLRUMap()

Constructor. The maximum size is set to Ehcache.getMaxElementsInMemory(). If the LRUMap gets bigger than this, processRemovedLRU(java.lang.Object, java.lang.Object) is called.

Method Detail

processRemovedLRU

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

Called after the element has been removed.

Our choices are to do nothing or spool the element to disk.

Note that value will be null when the memory size is set to 0. Thus a null guard is used.

Overrides:

processRemovedLRU in class org.apache.commons.collections.LRUMap

Parameters:

key -

value -