net.fortytwo.stream.sparql.impl.shj

Class SHJSparqlStreamProcessor

java.lang.Object

net.fortytwo.stream.BasicStreamProcessor<String,C,Q,org.openrdf.model.Statement,org.openrdf.query.BindingSet>

net.fortytwo.stream.sparql.RDFStreamProcessor<SparqlQuery,Q>

net.fortytwo.stream.sparql.SparqlStreamProcessor<Query<String,org.openrdf.model.Value>>

net.fortytwo.stream.sparql.impl.shj.SHJSparqlStreamProcessor

All Implemented Interfaces:

StreamProcessor<String,org.openrdf.model.Statement,org.openrdf.query.BindingSet>

public class SHJSparqlStreamProcessor
extends SparqlStreamProcessor<Query<String,org.openrdf.model.Value>>

A space-efficient continuous SPARQL query engine which uses a symmetric hash join

Author:

Joshua Shinavier (http://fortytwo.net)

Nested Class Summary

Nested classes/interfaces inherited from class net.fortytwo.stream.sparql.RDFStreamProcessor

RDFStreamProcessor.Counter, RDFStreamProcessor.Quantity

Nested classes/interfaces inherited from interface net.fortytwo.stream.StreamProcessor

StreamProcessor.IncompatibleQueryException, StreamProcessor.InvalidQueryException

Field Summary

Fields inherited from class net.fortytwo.stream.sparql.RDFStreamProcessor

logger

Fields inherited from interface net.fortytwo.stream.StreamProcessor

INFINITE_TTL, NEVER_EXPIRE

Constructor Summary

Constructors

Constructor and Description
SHJSparqlStreamProcessor()

Method Summary

Modifier and Type	Method and Description
protected boolean	addTupleInternal(org.openrdf.model.Value[] tuple, int ttl, long now)
void	clear()
protected BasicSubscription<SparqlQuery,Query<String,org.openrdf.model.Value>,org.openrdf.query.BindingSet>	createSubscriptionInternal(SparqlQuery sparqlQuery, List<VariableOrConstant<String,org.openrdf.model.Value>[]> patterns, long expirationTime, java.util.function.BiConsumer<org.openrdf.query.BindingSet,Long> consumer)
protected void	register(BasicSubscription<SparqlQuery,Query<String,org.openrdf.model.Value>,org.openrdf.query.BindingSet> subscription)
boolean	renew(BasicSubscription<SparqlQuery,Query<String,org.openrdf.model.Value>,org.openrdf.query.BindingSet> subscription, int ttl)
void	unregister(BasicSubscription<SparqlQuery,Query<String,org.openrdf.model.Value>,org.openrdf.query.BindingSet> subscription)
protected void	visitQueryPatterns(Query<String,org.openrdf.model.Value> query, java.util.function.Consumer<VariableOrConstant<String,org.openrdf.model.Value>[]> visitor)

Methods inherited from class net.fortytwo.stream.sparql.SparqlStreamProcessor

addQuery, addTuple, createRDFHandler, createSubscription, getReducedModifierCapacity, handleCandidateSolution, parseQuery, setLinkedDataCache, setReducedModifierCapacity

Methods inherited from class net.fortytwo.stream.sparql.RDFStreamProcessor

addInputs, addQuery, addQueryNative, beginOperation, clearCounters, get, getNow, handleSolution, increment, incrementQueries, incrementSolutions, incrementStatements, isActive, logEntry, logHeader, setClock, setDoPerformanceMetrics, setDoUseCompactLogFormat, shutDown, toExpirationTime

Methods inherited from class java.lang.Object

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

Constructor Detail

SHJSparqlStreamProcessor

public SHJSparqlStreamProcessor()

Method Detail

clear

public void clear()

addTupleInternal

protected boolean addTupleInternal(org.openrdf.model.Value[] tuple,
                                   int ttl,
                                   long now)

Specified by:

addTupleInternal in class SparqlStreamProcessor<Query<String,org.openrdf.model.Value>>

register

protected void register(BasicSubscription<SparqlQuery,Query<String,org.openrdf.model.Value>,org.openrdf.query.BindingSet> subscription)

Specified by:

register in class SparqlStreamProcessor<Query<String,org.openrdf.model.Value>>

unregister

public void unregister(BasicSubscription<SparqlQuery,Query<String,org.openrdf.model.Value>,org.openrdf.query.BindingSet> subscription)

Specified by:

unregister in class BasicStreamProcessor<String,SparqlQuery,Query<String,org.openrdf.model.Value>,org.openrdf.model.Statement,org.openrdf.query.BindingSet>

renew

public boolean renew(BasicSubscription<SparqlQuery,Query<String,org.openrdf.model.Value>,org.openrdf.query.BindingSet> subscription,
                     int ttl)

Specified by:

renew in class BasicStreamProcessor<String,SparqlQuery,Query<String,org.openrdf.model.Value>,org.openrdf.model.Statement,org.openrdf.query.BindingSet>

visitQueryPatterns

protected void visitQueryPatterns(Query<String,org.openrdf.model.Value> query,
                                  java.util.function.Consumer<VariableOrConstant<String,org.openrdf.model.Value>[]> visitor)

Specified by:

visitQueryPatterns in class SparqlStreamProcessor<Query<String,org.openrdf.model.Value>>

createSubscriptionInternal

protected BasicSubscription<SparqlQuery,Query<String,org.openrdf.model.Value>,org.openrdf.query.BindingSet> createSubscriptionInternal(SparqlQuery sparqlQuery,
                                                                                                                                       List<VariableOrConstant<String,org.openrdf.model.Value>[]> patterns,
                                                                                                                                       long expirationTime,
                                                                                                                                       java.util.function.BiConsumer<org.openrdf.query.BindingSet,Long> consumer)

Specified by:

createSubscriptionInternal in class SparqlStreamProcessor<Query<String,org.openrdf.model.Value>>