org.exist.collections
Class CollectionCache

java.lang.Object
  org.exist.storage.cache.LRUCache
      org.exist.collections.CollectionCache

All Implemented Interfaces:

Cache

public class CollectionCache
extends LRUCache

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 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(XmldbURI name)
int	getRealSize() Compute and return the in-memory size of all collections currently contained in this cache.
void	remove(Cacheable item) Remove an item from the cache.
void	resize(int newSize) Resize the cache.

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

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

Methods inherited from class java.lang.Object

equals, 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(XmldbURI name)

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 LRUCache

getRealSize

public int getRealSize()

Compute and return the in-memory size of all collections currently contained in this cache.

Returns:

in-memory size in bytes.

See Also:

CollectionCacheManager

resize

public void resize(int newSize)

Description copied from interface: Cache

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

Specified by:

resize in interface Cache

Overrides:

resize in class LRUCache

Parameters:

newSize - the new size of the cache.