org.exist.collections
Class CollectionCache

java.lang.Object
  org.exist.storage.cache.GClockCache
      org.exist.storage.cache.LRDCache
          org.exist.collections.CollectionCache

All Implemented Interfaces:

Cache

public class CollectionCache

extends LRDCache

Global cache for Collection objects. The cache is owned by CollectionStore. It is not synchronized. Thus a lock should be obtained on the collection store before accessing the cache.

Author:

wolf

Field Summary

Fields inherited from class org.exist.storage.cache.LRDCache

totalReferences

Fields inherited from class org.exist.storage.cache.GClockCache

accounting, cacheManager, count, growthFactor, hitsOld, items, map, size, used

Fields inherited from interface org.exist.storage.cache.Cache

LOG

Constructor Summary

CollectionCache(BrokerPool pool, int blockBuffers, double growthThreshold)

Method Summary

void	add(Collection collection)
void	add(Collection collection, int initialRefCount)
Collection	get(Collection collection)
Collection	get(java.lang.String name)
void	remove(Cacheable item) Remove an item from the cache.
protected Cacheable	removeOne(Cacheable item) Overwritten to lock collections before they are removed.
void	resize(int newSize) Resize the cache.

Methods inherited from class org.exist.storage.cache.LRDCache

add, ageReferences, cleanup

Methods inherited from class org.exist.storage.cache.GClockCache

add, flush, get, get, getBuffers, getFails, getFileName, getGrowthFactor, getHits, getLoad, getThrashing, getUsedBuffers, hasDirtyItems, setCacheManager, setFileName, shrink

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionCache

public CollectionCache(BrokerPool pool,
                       int blockBuffers,
                       double growthThreshold)

Method Detail

add

public void add(Collection collection)

add

public void add(Collection collection,
                int initialRefCount)

get

public Collection get(Collection collection)

get

public Collection get(java.lang.String name)

removeOne

protected Cacheable removeOne(Cacheable item)

Overwritten to lock collections before they are removed.

Overrides:

removeOne in class LRDCache

remove

public void remove(Cacheable item)

Description copied from interface: Cache

Remove an item from the cache.

Specified by:

remove in interface Cache

Overrides:

remove in class GClockCache

resize

public void resize(int newSize)

Description copied from interface: Cache

Resize the cache. This method is called by the CacheManager. The newSize parameter can either be larger or smaller than the current cache size.

Specified by:

resize in interface Cache

Overrides:

resize in class GClockCache