kodo.datacache
Class ClassRefCacheMap

java.lang.Object
  |
  +--kodo.util.CacheMap
        |
        +--kodo.datacache.ClassRefCacheMap

All Implemented Interfaces:

Map

public class ClassRefCacheMap

extends CacheMap

A map that keeps hard references to a fixed number of elements and moves expired references to a soft reference map. Additionally, objects that are pinned are not counted towards the max size of the map. This implementation is thread-safe.

Inner classes inherited from class java.util.Map

Map.Entry

Field Summary

protected HashMap

_refsByClass An auxilarily dictionary so we can find all the objects in the cache of a particular class.

Fields inherited from class kodo.util.CacheMap

_lruMap, _pinnedMap, _softMap

Constructor Summary

ClassRefCacheMap()

ClassRefCacheMap(int size)

Method Summary

void	clear() Removes pinned objects as well as unpinned ones.
protected void	entryHardRefAdded(Object key, Object value)
protected void	entryRemoved(Object key, Object value)
protected void	entryWeakRefAdded(Object key, Object value)
void	removeAll(Class cls) Removes all objects of the specified instantiable class.

Methods inherited from class kodo.util.CacheMap

containsKey, containsValue, entrySet, get, getCacheSize, getPinnedKeys, getSoftReferenceSize, getStatistics, isEmpty, keyRemoved, keySet, pin, put, putAll, remove, setCacheSize, setSoftReferenceSize, size, unpin, values

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

Field Detail

_refsByClass

protected final HashMap _refsByClass

An auxilarily dictionary so we can find all the objects in the cache of a particular class. The dict keys are classes and the values are ReferenceCollections (hashsets of OIDs). Each ReferenceCollection holds refs to OIDs that are either hard refs (for pinned/lru) or weak refs (for OIDs in the softmap).

Constructor Detail

ClassRefCacheMap

public ClassRefCacheMap()

ClassRefCacheMap

public ClassRefCacheMap(int size)

Method Detail

entryRemoved

protected void entryRemoved(Object key,
                            Object value)

Overrides:

entryRemoved in class CacheMap

entryWeakRefAdded

protected void entryWeakRefAdded(Object key,
                                 Object value)

Overrides:

entryWeakRefAdded in class CacheMap

entryHardRefAdded

protected void entryHardRefAdded(Object key,
                                 Object value)

Overrides:

entryHardRefAdded in class CacheMap

clear

public void clear()

Description copied from class: CacheMap

Removes pinned objects as well as unpinned ones.

Overrides:

clear in class CacheMap

removeAll

public void removeAll(Class cls)

Removes all objects of the specified instantiable class. Does not remove sub classes of the specified class.