org.apache.jackrabbit.spi.commons
Class ItemInfoCacheImpl

java.lang.Object
  org.apache.jackrabbit.spi.commons.ItemInfoCacheImpl

All Implemented Interfaces:

org.apache.jackrabbit.spi.ItemInfoCache

public class ItemInfoCacheImpl
extends Object
implements org.apache.jackrabbit.spi.ItemInfoCache

This implementation of ItemInfoCache has a default size of 5000 items. Item infos are put into the cache after they have been read from the RepositoryService. If the cache is full, the oldest item is discarded. Reading items removes them from the cache. The underlying idea here is, that ItemInfos which are supplied by the RepositoryService but not immediately needed are put into the cache to avoid further round trips to RepositoryService. When they are needed later, they are read from the cache. There is no need to keep them in this cache after that point since they are present in the hierarchy from then on.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.jackrabbit.spi.ItemInfoCache

org.apache.jackrabbit.spi.ItemInfoCache.Entry<T extends org.apache.jackrabbit.spi.ItemInfo>

Field Summary

static int

DEFAULT_CACHE_SIZE Default size of the cache.

Constructor Summary

ItemInfoCacheImpl()
Create a new instance with the default cache size.

ItemInfoCacheImpl(int cacheSize)
Create a new instance with a given cache size.

Method Summary

void	dispose()
org.apache.jackrabbit.spi.ItemInfoCache.Entry<org.apache.jackrabbit.spi.NodeInfo>	getNodeInfo(org.apache.jackrabbit.spi.NodeId nodeId) This implementation removes the item from the cache if it is present.
org.apache.jackrabbit.spi.ItemInfoCache.Entry<org.apache.jackrabbit.spi.PropertyInfo>	getPropertyInfo(org.apache.jackrabbit.spi.PropertyId propertyId) This implementation removes the item from the cache if it is present.
void	put(org.apache.jackrabbit.spi.ItemInfo info, long generation) This implementation cached the item by its id and if the id is uuid based but has no path, also by its path.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_CACHE_SIZE

public static final int DEFAULT_CACHE_SIZE

Default size of the cache.

See Also:

Constant Field Values

Constructor Detail

ItemInfoCacheImpl

public ItemInfoCacheImpl()

Create a new instance with the default cache size.

See Also:

DEFAULT_CACHE_SIZE

ItemInfoCacheImpl

public ItemInfoCacheImpl(int cacheSize)

Create a new instance with a given cache size.

Parameters:

cacheSize -

Method Detail

getNodeInfo

public org.apache.jackrabbit.spi.ItemInfoCache.Entry<org.apache.jackrabbit.spi.NodeInfo> getNodeInfo(org.apache.jackrabbit.spi.NodeId nodeId)

This implementation removes the item from the cache if it is present. Furthermore if the nodeId id uuid based, and no item is found by the nodeId a second lookup is done by the path.

Specified by:

getNodeInfo in interface org.apache.jackrabbit.spi.ItemInfoCache

getPropertyInfo

public org.apache.jackrabbit.spi.ItemInfoCache.Entry<org.apache.jackrabbit.spi.PropertyInfo> getPropertyInfo(org.apache.jackrabbit.spi.PropertyId propertyId)

This implementation removes the item from the cache if it is present. Furthermore if the propertyId id uuid based, and no item is found by the propertyId a second lookup is done by the path.

Specified by:

getPropertyInfo in interface org.apache.jackrabbit.spi.ItemInfoCache

put

public void put(org.apache.jackrabbit.spi.ItemInfo info,
                long generation)

This implementation cached the item by its id and if the id is uuid based but has no path, also by its path.

Specified by:

put in interface org.apache.jackrabbit.spi.ItemInfoCache

dispose

public void dispose()

Specified by:

dispose in interface org.apache.jackrabbit.spi.ItemInfoCache