Module org.apache.lucene.facet

Package org.apache.lucene.facet.taxonomy.writercache

Class NameHashIntCacheLRU

java.lang.Object

org.apache.lucene.facet.taxonomy.writercache.NameIntCacheLRU

org.apache.lucene.facet.taxonomy.writercache.NameHashIntCacheLRU

public class NameHashIntCacheLRU
extends NameIntCacheLRU

An LRU cache of mapping from name to int. Used to cache Ordinals of category paths. It uses as key, hash of the path instead of the path. This way the cache takes less RAM, but correctness depends on assuming no collisions.

Field Summary

Fields inherited from class org.apache.lucene.facet.taxonomy.writercache.NameIntCacheLRU

nHits, nMisses

Constructor Summary

Constructors

Constructor	Description
NameHashIntCacheLRU(int maxCacheSize)

Method Summary

Modifier and Type	Method	Description
(package private) Object	key(FacetLabel name)	Subclasses can override this to provide caching by e.g.
(package private) Object	key(FacetLabel name, int prefixLen)

Methods inherited from class org.apache.lucene.facet.taxonomy.writercache.NameIntCacheLRU

clear, get, getMaxSize, getSize, makeRoomLRU, put, put, stats

Methods inherited from class java.lang.Object

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

Constructor Details

NameHashIntCacheLRU

NameHashIntCacheLRU(int maxCacheSize)

Method Details

key

Object key(FacetLabel name)

Description copied from class: NameIntCacheLRU

Subclasses can override this to provide caching by e.g. hash of the string.

Overrides:

key in class NameIntCacheLRU

key

Object key(FacetLabel name,
 int prefixLen)

Overrides:

key in class NameIntCacheLRU