org.mmbase.cache
Class RelatedNodesCache

java.lang.Object
  java.util.Dictionary
      java.util.Hashtable
          org.mmbase.util.LRUHashtable
              org.mmbase.cache.Cache
                  org.mmbase.cache.QueryResultCache
                      org.mmbase.cache.RelatedNodesCache

All Implemented Interfaces:

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

public class RelatedNodesCache

extends QueryResultCache

Query result cache used for getRelatedNodes from MMObjectNodes. Entries are invalidated on the normal QueryResultCache way, but also if the one node from which the related nodes were requested is removed from the Node Cache itself.

Since:

MMBase-1.7

Version:

$Id: RelatedNodesCache.java,v 1.3 2003/08/29 12:12:27 keesj Exp $

Author:

Michiel Meeuwissen

See Also:

MMObjectNode.getRelatedNodes(), Serialized Form

Nested Class Summary

Nested classes inherited from class org.mmbase.util.LRUHashtable

LRUHashtable.LRUEntry, LRUHashtable.LRUEntrySet, LRUHashtable.LRUEntrySetIterator

Field Summary

Fields inherited from class org.mmbase.cache.Cache

maxEntrySize

Method Summary

static RelatedNodesCache	getCache()
java.lang.String	getDescription() Gives a description for this cache type.
java.lang.String	getName() Returns a name for this cache type.
java.lang.Object	put(SearchQuery query, java.util.List queryResult) Puts a search result in this cache.
java.lang.Object	remove(java.lang.Object key) Removes an object from the cache.

Methods inherited from class org.mmbase.cache.QueryResultCache

invalidateAll, put, toString

Methods inherited from class org.mmbase.cache.Cache

get, getByteSize, getByteSize, getCache, getCaches, getDefaultMaxEntrySize, getMaxEntrySize, getTotalByteSize, isActive, main, putCache, putCache, setActive

Methods inherited from class org.mmbase.util.LRUHashtable

clear, clone, elements, entrySet, getCount, getHits, getMisses, getOrderedElements, getOrderedElements, getOrderedEntries, getOrderedEntries, getPuts, getRatio, getSize, getStats, keySet, setSize, size, toString, values

Methods inherited from class java.util.Hashtable

contains, containsKey, containsValue, equals, hashCode, isEmpty, keys, putAll, rehash

Methods inherited from class java.lang.Object

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

Method Detail

getCache

public static RelatedNodesCache getCache()

getName

public java.lang.String getName()

Description copied from class: Cache

Returns a name for this cache type. Default it is the class name, but this normally will be overriden.

Overrides:

getName in class Cache

getDescription

public java.lang.String getDescription()

Description copied from class: Cache

Gives a description for this cache type. This can be used in cache overviews.

Overrides:

getDescription in class Cache

put

public java.lang.Object put(SearchQuery query,
                            java.util.List queryResult)

Description copied from class: QueryResultCache

Puts a search result in this cache.

Overrides:

put in class QueryResultCache

remove

public java.lang.Object remove(java.lang.Object key)

Description copied from class: QueryResultCache

Removes an object from the cache. It alsos remove the watch from the observers which are watching this entry.

Specified by:

remove in interface java.util.Map

Overrides:

remove in class QueryResultCache

Parameters:

key - A SearchQuery object.