Hi Holger,
thank You very much, the workaround worked for me. Just wanted to mention
that the original query works in SPARQL view, so it was strange for me that
it did not work in the sml:ApplyConstruct module (maybe there are some
limitation that i am not aware of).
Best regards,
Peter
On Wednesday, April 27, 2016 at 8:50:16 AM UTC+2, Holger Knublauch wrote:
>
> This work-around may help:
>
> SELECT ?s ?p ?o
> WHERE {
> {
> BIND (IRI(CONCAT(str(?sparqlEndpoint), "?default-graph-uri=",
> encode_for_uri(str(?dataset)))) AS ?url) .
> }
> SERVICE ?url {
> ?s ?p ?o
> }
> }
>
> The trick here is to avoid passing the default query graph into the query,
> and instead put it into the URL using the SPARQL 1.1 protocol. Note that
> this approach may not help if you have other pre-bound variables to pass
> into the SERVICE request.
>
> Holger
>
>
> On 27/04/2016 16:38, [email protected] <javascript:> wrote:
>
> Hi,
>
>
> I am trying to query sparql endpoint with sparql motion module of type
> sml:ApplyConstruct, where sml:ApplyConstruct is set to:
>
>
> CONSTRUCT {
>
> ?s ?p ?o .
>
> }
>
> WHERE {
>
> SERVICE ?sparqlEndpoint {
>
> GRAPH ?dataset {
>
> ?s ?p ?o .
>
> } .
>
> } .
>
> }
>
>
> ?sparqlEndpoint and ?dataset are pointing to correct urls. Unfortunately
> when i run script i get exception :
>
> -
>
> Operation failed. On: Apr 22, 2016 5:52:53 PM Reason:
> java.lang.UnsupportedOperationException: Initial bindings not supported
> for
> remote queries, consider using a ParameterizedSparqlString to prepare a
> query for remote execution at
>
> com.hp.hpl.jena.sparql.engine.http.QueryEngineHTTP.setInitialBinding(QueryEngineHTTP.java:236)at
>
>
> org.topbraid.sparql.LockOptimizedQueryExecution.setInitialBinding(LockOptimizedQueryExecution.java:94)
>
> at
>
> org.topbraid.spin.sparqlmotion.modules.SMModuleUtil.applyVarBindings(SMModuleUtil.java:92)at
>
>
> org.topbraid.spin.sparqlmotion.modules.SMModuleUtil.createQueryExecution(SMModuleUtil.java:192)
>
> at
>
> org.topbraid.spin.sparqlmotion.lib.internal.ApplyConstructModule.applyConstruct(ApplyConstructModule.java:51)at
>
>
> org.topbraid.spin.sparqlmotion.lib.internal.ApplyConstructModule.createGraph(ApplyConstructModule.java:41)
>
> at
>
> org.topbraid.spin.sparqlmotion.modules.AbstractSMModule.getRDFOutput(AbstractSMModule.java:907)at
>
>
> org.topbraid.spin.sparqlmotion.engine.impl.ExecutionEngineImpl.executeModule(ExecutionEngineImpl.java:176)
>
> at
>
> org.topbraid.spin.sparqlmotion.engine.impl.ExecutionEngineImpl.execute(ExecutionEngineImpl.java:118)at
>
>
> org.topbraidcomposer.sparqlmotion.views.console.SPARQLMotionConsole.execute(SPARQLMotionConsole.java:79)
>
> at
>
> org.topbraidcomposer.sparqlmotion.actions.AbstractExecuteSPARQLMotionAction$1.run(AbstractExecuteSPARQLMotionAction.java:142)at
>
> org.topbraidcomposer.core.util.ThreadUtil$1$1.run(ThreadUtil.java:64) at
> java.lang.Thread.run(Thread.java:745)
>
>
> Am I doing something wrong ? Or is there any other module that i can use
> to query concrete dataset of sparql endpoint ?
>
> Thanks,
> Peter G.
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