de.fuberlin.wiwiss.d2rq.jena

Class CachingGraphD2RQ

java.lang.Object

com.hp.hpl.jena.graph.impl.GraphBase

de.fuberlin.wiwiss.d2rq.jena.GraphD2RQ

de.fuberlin.wiwiss.d2rq.jena.CachingGraphD2RQ

All Implemented Interfaces:

Graph, GraphAdd, com.hp.hpl.jena.graph.impl.GraphWithPerform

public class CachingGraphD2RQ
extends GraphD2RQ

A GraphD2RQ that caches the results of the most recently performed queries on an LRU basis.

Author:

Holger Knublauch (holger@topquadrant.com)

Field Summary

Fields inherited from class com.hp.hpl.jena.graph.impl.GraphBase

bulkHandler, closed, gem, pm, queryHandler, reifier, statisticsHandler, style, TOSTRING_TRIPLE_BASE, TOSTRING_TRIPLE_LIMIT

Fields inherited from interface com.hp.hpl.jena.graph.Graph

emptyGraph

Constructor Summary

Constructors

Constructor and Description
CachingGraphD2RQ(Mapping mapping)

Method Summary

Methods

Modifier and Type	Method and Description
void	clearCache() Clears the current cache.
com.hp.hpl.jena.util.iterator.ExtendedIterator<Triple>	graphBaseFind(TripleMatch m) Overloaded to reuse and update the cache.

Methods inherited from class de.fuberlin.wiwiss.d2rq.jena.GraphD2RQ

checkOpen, close, getCapabilities, getMapping, queryHandler

Methods inherited from class com.hp.hpl.jena.graph.impl.GraphBase

add, constructReifier, contains, contains, containsByFind, createStatisticsHandler, delete, dependsOn, find, find, forTestingOnly_graphBaseFind, getBulkUpdateHandler, getEventManager, getPrefixMapping, getReifier, getStatisticsHandler, getTransactionHandler, graphBaseContains, graphBaseFind, graphBaseSize, isClosed, isEmpty, isIsomorphicWith, notifyAdd, notifyDelete, performAdd, performDelete, reifierContains, reifierSize, reifierTriples, size, toString, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.hp.hpl.jena.graph.Graph

contains, contains, delete, dependsOn, find, find, getBulkUpdateHandler, getEventManager, getPrefixMapping, getReifier, getStatisticsHandler, getTransactionHandler, isClosed, isEmpty, isIsomorphicWith, size

Methods inherited from interface com.hp.hpl.jena.graph.GraphAdd

add

Constructor Detail

CachingGraphD2RQ

public CachingGraphD2RQ(Mapping mapping)
                 throws D2RQException

Throws:

D2RQException

Method Detail

clearCache

public void clearCache()

Clears the current cache. This can be used in case the database has been changed.

graphBaseFind

public com.hp.hpl.jena.util.iterator.ExtendedIterator<Triple> graphBaseFind(TripleMatch m)

Overloaded to reuse and update the cache.

Overrides:

graphBaseFind in class GraphD2RQ