org.wikidata.query.rdf.blazegraph.ldf

Class BlazegraphBasedTPFRequestProcessor

java.lang.Object

org.linkeddatafragments.datasource.AbstractRequestProcessor

org.linkeddatafragments.datasource.AbstractRequestProcessorForTriplePatterns<com.bigdata.rdf.model.BigdataValue,String,String>

org.wikidata.query.rdf.blazegraph.ldf.BlazegraphBasedTPFRequestProcessor

All Implemented Interfaces:

Closeable, AutoCloseable, org.linkeddatafragments.datasource.IFragmentRequestProcessor

public class BlazegraphBasedTPFRequestProcessor
extends org.linkeddatafragments.datasource.AbstractRequestProcessorForTriplePatterns<com.bigdata.rdf.model.BigdataValue,String,String>

A Blazegraph-based data source.

Author:

Olaf Hartig

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BlazegraphBasedTPFRequestProcessor.VariablesBasedFilter Filter based on variables.
protected class	BlazegraphBasedTPFRequestProcessor.Worker Blazegraph worker class.

Constructor Summary

Constructors

Constructor and Description
BlazegraphBasedTPFRequestProcessor(com.bigdata.rdf.store.AbstractTripleStore store)

Method Summary

Modifier and Type	Method and Description
static com.bigdata.rdf.internal.IV	asIVorNull(org.linkeddatafragments.fragments.tpf.ITriplePatternElement<com.bigdata.rdf.model.BigdataValue,String,String> tpe) Convert element to IV if it's constant.
protected BlazegraphBasedTPFRequestProcessor.Worker	getTPFSpecificWorker(org.linkeddatafragments.fragments.tpf.ITriplePatternFragmentRequest<com.bigdata.rdf.model.BigdataValue,String,String> req)

Methods inherited from class org.linkeddatafragments.datasource.AbstractRequestProcessorForTriplePatterns

getWorker

Methods inherited from class org.linkeddatafragments.datasource.AbstractRequestProcessor

close, createRequestedFragment

Methods inherited from class java.lang.Object

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

Constructor Detail

BlazegraphBasedTPFRequestProcessor

public BlazegraphBasedTPFRequestProcessor(com.bigdata.rdf.store.AbstractTripleStore store)

Method Detail

getTPFSpecificWorker

protected BlazegraphBasedTPFRequestProcessor.Worker getTPFSpecificWorker(org.linkeddatafragments.fragments.tpf.ITriplePatternFragmentRequest<com.bigdata.rdf.model.BigdataValue,String,String> req)

Specified by:

getTPFSpecificWorker in class org.linkeddatafragments.datasource.AbstractRequestProcessorForTriplePatterns<com.bigdata.rdf.model.BigdataValue,String,String>

asIVorNull

public static com.bigdata.rdf.internal.IV asIVorNull(org.linkeddatafragments.fragments.tpf.ITriplePatternElement<com.bigdata.rdf.model.BigdataValue,String,String> tpe)

Convert element to IV if it's constant.

Parameters:

tpe -

Returns:

IV or null if not constant.