Re: [Bigdata-developers] Federated query - BLZG-1153?

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Joakim,

Is this against the 2.0.0 version?   If so, you may try 2.0.1, which is now
available on Maven Central.

Thanks, --Brad

On Sat, Feb 27, 2016 at 7:06 PM, Joakim Soderberg <
joa...@bl...> wrote:

> I am trying to query combining two endpoints:
>
>
> PREFIX wd: <http://www.wikidata.org/entity/>
> SELECT ?wikiId ?wikidataItem
> WHERE
> {
>   <http://dbpedia.org/resource/Elvis_Presley> owl:sameAs ?wikidataItem .
>   FILTER regex(str(?wikidataItem), 'http://wikidata.org/entity/', 'i')
>
>   SERVICE <http://nn.nn.nnn.1:9999/bigdata/sparql> {
>     ?s ?p ?wikidataItem }
>
> } limit 100
>
> But this returns an empty result, even though ?wikidataItem contains the
> value: <http://wikidata.org/entity/Q303>
> Manually replacing ?wikidataItem with wd:Q303, makes the query work:
>
> PREFIX wd: <http://www.wikidata.org/entity/>
> SELECT ?wikiId ?wikidataItem
> WHERE
> {
>   <http://dbpedia.org/resource/Elvis_Presley> owl:sameAs ?wikidataItem .
>   FILTER regex(str(?wikidataItem), 'http://wikidata.org/entity/', 'i')
>
>   SERVICE <http://nn.nn.nnn.1:9999/bigdata/sparql> {
>     ?s ?p wd:Q303}
>
> } limit 100
>
> When I build a string from the variable I get another error:
>
> PREFIX wd: <http://www.wikidata.org/entity/>
> PREFIX foaf:   <http://xmlns.com/foaf/0.1/>
> SELECT ?wikiId ?wikidataItem
> WHERE
> {
>   <http://dbpedia.org/resource/Elvis_Presley> owl:sameAs ?wikidataItem .
>   FILTER regex(str(?wikidataItem), 'http://wikidata.org/entity/', 'i')
>
>   BIND(REPLACE(str(?wikidataItem), '^.*(#|/)', "") AS ?localname)
>   BIND( CONCAT( "wd:", str(?localname) ) AS ?wikiId )
>
>   SERVICE <http://nn.nn.nnn.1:9999/bigdata/sparql> {
>     ?s ?p  ?wikiId }
>
> } limit 100
>
>
> prefix bds: SELECT ?s ?p ?wikiId WHERE { ?s ?p ?wikiId }
> java.util.concurrent.ExecutionException:
> java.util.concurrent.ExecutionException:
> org.openrdf.query.QueryEvaluationException: java.lang.RuntimeException:
> java.util.concurrent.ExecutionException: java.lang.RuntimeException:
> java.lang.RuntimeException: Unknown extension: Vocab(-9) at
> java.util.concurrent.FutureTask.report(FutureTask.java:122) at
> java.util.concurrent.FutureTask.get(FutureTask.java:192) at
> com.bigdata.rdf.sail.webapp.BigdataServlet.submitApiTask(BigdataServlet.java:281)
> at
> com.bigdata.rdf.sail.webapp.QueryServlet.doSparqlQuery(QueryServlet.java:636)
> at com.bigdata.rdf.sail.webapp.QueryServlet.doPost(QueryServlet.java:263)
> at com.bigdata.rdf.sail.webapp.RESTServlet.doPost(RESTServlet.java:269) at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808) at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
> at org.eclipse.jetty.server.Server.handle(Server.java:497) at
> org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310) at
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
> at
> org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.lang.Thread.run(Thread.java:745) Caused by:
> java.util.concurrent.ExecutionException:
> org.openrdf.query.QueryEvaluationException: java.lang.RuntimeException:
> java.util.concurrent.ExecutionException: java.lang.RuntimeException:
> java.lang.RuntimeException: Unknown extension: Vocab(-9) at
> java.util.concurrent.FutureTask.report(FutureTask.java:122) at
> java.util.concurrent.FutureTask.get(FutureTask.java:192) at
> com.bigdata.rdf.sail.webapp.QueryServlet$SparqlQueryTask.call(QueryServlet.java:834)
> at
> com.bigdata.rdf.sail.webapp.QueryServlet$SparqlQueryTask.call(QueryServlet.java:653)
> at
> com.bigdata.rdf.task.ApiTaskForIndexManager.call(ApiTaskForIndexManager.java:68)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266) at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> ... 1 more Caused by: org.openrdf.query.QueryEvaluationException:
> java.lang.RuntimeException: java.util.concurrent.ExecutionException:
> java.lang.RuntimeException: java.lang.RuntimeException: Unknown extension:
> Vocab(-9) at
> com.bigdata.rdf.sail.Bigdata2Sesame2BindingSetIterator.hasNext(Bigdata2Sesame2BindingSetIterator.java:188)
> at info.aduna.iteration.IterationWrapper.hasNext(IterationWrapper.java:68)
> at org.openrdf.query.QueryResults.report(QueryResults.java:155) at
> org.openrdf.repository.sail.SailTupleQuery.evaluate(SailTupleQuery.java:76)
> at
> com.bigdata.rdf.sail.webapp.BigdataRDFContext$TupleQueryTask.doQuery(BigdataRDFContext.java:1711)
> at
> com.bigdata.rdf.sail.webapp.BigdataRDFContext$AbstractQueryTask.innerCall(BigdataRDFContext.java:1568)
> at
> com.bigdata.rdf.sail.webapp.BigdataRDFContext$AbstractQueryTask.call(BigdataRDFContext.java:1533)
> at
> com.bigdata.rdf.sail.webapp.BigdataRDFContext$AbstractQueryTask.call(BigdataRDFContext.java:705)
> ... 4 more Caused by: java.lang.RuntimeException:
> java.util.concurrent.ExecutionException: java.lang.RuntimeException:
> java.lang.RuntimeException: Unknown extension: Vocab(-9) at
> com.bigdata.relation.accesspath.BlockingBuffer$BlockingIterator.checkFuture(BlockingBuffer.java:1523)
> at
> com.bigdata.relation.accesspath.BlockingBuffer$BlockingIterator._hasNext(BlockingBuffer.java:1710)
> at
> com.bigdata.relation.accesspath.BlockingBuffer$BlockingIterator.hasNext(BlockingBuffer.java:1563)
> at
> com.bigdata.striterator.AbstractChunkedResolverator._hasNext(AbstractChunkedResolverator.java:365)
> at
> com.bigdata.striterator.AbstractChunkedResolverator.hasNext(AbstractChunkedResolverator.java:341)
> at
> com.bigdata.rdf.sail.Bigdata2Sesame2BindingSetIterator.hasNext(Bigdata2Sesame2BindingSetIterator.java:134)
>
>
>
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-- 
_______________
Brad Bebee
CEO
Blazegraph
e:  be...@bl...
m: 202.642.7961
w:  www.blazegraph.com

Blazegraph products help to solve the Graph Cache Thrash to achieve large
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for large graphs, has been named as one of the “10 Companies and
Technologies to Watch in 2016” <http://insideanalysis.com/2016/01/20535/>.

Blazegraph Database <https://www.blazegraph.com/> is our ultra-high
performance graph database that supports both RDF/SPARQL and
Tinkerpop/Blueprints APIs.   Blazegraph GPU
<https://www.blazegraph.com/product/gpu-accelerated/> andBlazegraph DAS
<https://www.blazegraph.com/product/gpu-accelerated/>L are disruptive new
technologies that use GPUs to enable extreme scaling that is thousands of
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Re: [Bigdata-developers] Federated query - BLZG-1153?

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Re: [Bigdata-developers] Federated query - BLZG-1153?