org.mindswap.pellet.tableau.cache

Class ConceptCacheLRU

java.lang.Object

org.mindswap.pellet.tableau.cache.AbstractConceptCache

org.mindswap.pellet.tableau.cache.ConceptCacheLRU

All Implemented Interfaces:

Map<aterm.ATermAppl,CachedNode>, ConceptCache

public class ConceptCacheLRU
extends AbstractConceptCache
implements ConceptCache

Title:

Description: LRU implementation of ConceptCache. Primitive concepts and their negation are always kept in the cache. The least recently used complex concept will be removed from the cache if the max size is reached.

Copyright: Copyright (c) 2007

Company: Clark & Parsia, LLC.

Author:

Ron Alford

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Field Summary

Fields inherited from class org.mindswap.pellet.tableau.cache.AbstractConceptCache

log

Constructor Summary

Constructors

Constructor and Description
ConceptCacheLRU(KnowledgeBase kb) Creates an empty ConceptCacheImpl with no size restrictions
ConceptCacheLRU(KnowledgeBase kb, int maxSize) Creates an empty cache with at most maxSize elements which are neither named or negations of names.

Method Summary

Methods

Modifier and Type	Method and Description
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<aterm.ATermAppl,CachedNode>>	entrySet()
CachedNode	get(Object key)
CacheSafety	getSafety() Returns safety checker that tells which concepts are safe to cache.
boolean	isEmpty()
Set<aterm.ATermAppl>	keySet()
CachedNode	put(aterm.ATermAppl key, CachedNode value)
void	putAll(Map<? extends aterm.ATermAppl,? extends CachedNode> t)
CachedNode	remove(Object key)
int	size()
String	toString()
Collection<CachedNode>	values()

Methods inherited from class org.mindswap.pellet.tableau.cache.AbstractConceptCache

checkNominalEdges, getMaxSize, getSat, isFull, isMergable, putSat, setMaxSize

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mindswap.pellet.tableau.cache.ConceptCache

checkNominalEdges, getMaxSize, getSat, isMergable, putSat, setMaxSize

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

ConceptCacheLRU

public ConceptCacheLRU(KnowledgeBase kb)

Creates an empty ConceptCacheImpl with no size restrictions

Parameters:

maxSize -

ConceptCacheLRU

public ConceptCacheLRU(KnowledgeBase kb,
               int maxSize)

Creates an empty cache with at most maxSize elements which are neither named or negations of names.

Parameters:

maxSize -

Method Detail

getSafety

public CacheSafety getSafety()

Description copied from interface: ConceptCache

Returns safety checker that tells which concepts are safe to cache.

Specified by:

getSafety in interface ConceptCache

Returns:

safety checker

clear

public void clear()

Specified by:

clear in interface Map<aterm.ATermAppl,CachedNode>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<aterm.ATermAppl,CachedNode>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<aterm.ATermAppl,CachedNode>

entrySet

public Set<Map.Entry<aterm.ATermAppl,CachedNode>> entrySet()

Specified by:

entrySet in interface Map<aterm.ATermAppl,CachedNode>

get

public CachedNode get(Object key)

Specified by:

get in interface Map<aterm.ATermAppl,CachedNode>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<aterm.ATermAppl,CachedNode>

keySet

public Set<aterm.ATermAppl> keySet()

Specified by:

keySet in interface Map<aterm.ATermAppl,CachedNode>

put

public CachedNode put(aterm.ATermAppl key,
             CachedNode value)

Specified by:

put in interface Map<aterm.ATermAppl,CachedNode>

putAll

public void putAll(Map<? extends aterm.ATermAppl,? extends CachedNode> t)

Specified by:

putAll in interface Map<aterm.ATermAppl,CachedNode>

remove

public CachedNode remove(Object key)

Specified by:

remove in interface Map<aterm.ATermAppl,CachedNode>

size

public int size()

Specified by:

size in interface Map<aterm.ATermAppl,CachedNode>

values

public Collection<CachedNode> values()

Specified by:

values in interface Map<aterm.ATermAppl,CachedNode>

toString

public String toString()

Overrides:

toString in class Object