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Posted to users@jena.apache.org by Regis Pires Magalhães <re...@gmail.com> on 2011/11/03 19:14:05 UTC

Configuring Fuseki to use multiple datasets

I am trying to use multiple datasets in one Fuseki instance but the
following error occurs:

./fuseki-server --desc assembler.ttl

15:03:06 INFO  Server               :: Dataset from assembler
com.hp.hpl.jena.sparql.ARQException: More than one: var ?root
at
com.hp.hpl.jena.sparql.util.QueryExecUtils.getOne(QueryExecUtils.java:354)
 at
com.hp.hpl.jena.sparql.util.graph.GraphUtils.findRootByType(GraphUtils.java:191)
 at
com.hp.hpl.jena.sparql.core.assembler.AssemblerUtils.build(AssemblerUtils.java:97)
 at arq.cmdline.ModAssembler.create(ModAssembler.java:68)
at
arq.cmdline.ModDatasetAssembler.createDataset(ModDatasetAssembler.java:43)
 at org.openjena.fuseki.FusekiCmd.processModulesAndArgs(FusekiCmd.java:213)
 at arq.cmdline.CmdArgModule.process(CmdArgModule.java:51)
at arq.cmdline.CmdMain.mainMethod(CmdMain.java:96)
 at arq.cmdline.CmdMain.mainRun(CmdMain.java:59)
at arq.cmdline.CmdMain.mainRun(CmdMain.java:46)
 at org.openjena.fuseki.FusekiCmd.main(FusekiCmd.java:92)

*assembler.ttl file:*

@prefix fuseki:  <http://jena.apache.org/fuseki#> .
@prefix rdf:     <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs:    <http://www.w3.org/2000/01/rdf-schema#> .
@prefix tdb:     <http://jena.hpl.hp.com/2008/tdb#> .
@prefix ja:      <http://jena.hpl.hp.com/2005/11/Assembler#> .
@prefix :        <#> .

[] rdf:type fuseki:Server ;
   fuseki:services (
     <#service1>
     <#service2>
   ) .

[] ja:loadClass "com.hp.hpl.jena.tdb.TDB" .
tdb:DatasetTDB  rdfs:subClassOf  ja:RDFDataset .
tdb:GraphTDB    rdfs:subClassOf  ja:Model .

<#service1>  rdf:type fuseki:Service ;
    fuseki:name              "dblp" ;
    fuseki:serviceQuery      "sparql" ;
    fuseki:dataset           <#dblp> ;
    .

<#dblp> rdf:type      tdb:DatasetTDB ;
    tdb:location "/home/regis/datasources/dblp" .

<#service2>  rdf:type fuseki:Service ;
    fuseki:name              "drugbank" ;
    fuseki:serviceQuery      "sparql" ;
    fuseki:dataset           <#drugbank> ;
    .

<#drugbank> rdf:type      tdb:DatasetTDB ;
    tdb:location "/home/regis/datasources/drugbank" .

Can someone help me to configure it correctly?

Regards,
Regis.

Re: Configuring Fuseki to use multiple datasets

Posted by Regis Pires Magalhães <re...@gmail.com>.
It worked when I ran it with --config option:

./fuseki-server --config=assembler.ttl

Regards,
Regis.


Em 3 de novembro de 2011 15:14, Regis Pires Magalhães <
regispiresmag@gmail.com> escreveu:

> I am trying to use multiple datasets in one Fuseki instance but the
> following error occurs:
>
> ./fuseki-server --desc assembler.ttl
>
> 15:03:06 INFO  Server               :: Dataset from assembler
> com.hp.hpl.jena.sparql.ARQException: More than one: var ?root
> at
> com.hp.hpl.jena.sparql.util.QueryExecUtils.getOne(QueryExecUtils.java:354)
>  at
> com.hp.hpl.jena.sparql.util.graph.GraphUtils.findRootByType(GraphUtils.java:191)
>  at
> com.hp.hpl.jena.sparql.core.assembler.AssemblerUtils.build(AssemblerUtils.java:97)
>  at arq.cmdline.ModAssembler.create(ModAssembler.java:68)
> at
> arq.cmdline.ModDatasetAssembler.createDataset(ModDatasetAssembler.java:43)
>  at
> org.openjena.fuseki.FusekiCmd.processModulesAndArgs(FusekiCmd.java:213)
>  at arq.cmdline.CmdArgModule.process(CmdArgModule.java:51)
> at arq.cmdline.CmdMain.mainMethod(CmdMain.java:96)
>  at arq.cmdline.CmdMain.mainRun(CmdMain.java:59)
> at arq.cmdline.CmdMain.mainRun(CmdMain.java:46)
>  at org.openjena.fuseki.FusekiCmd.main(FusekiCmd.java:92)
>
> *assembler.ttl file:*
>
> @prefix fuseki:  <http://jena.apache.org/fuseki#> .
> @prefix rdf:     <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
> @prefix rdfs:    <http://www.w3.org/2000/01/rdf-schema#> .
> @prefix tdb:     <http://jena.hpl.hp.com/2008/tdb#> .
> @prefix ja:      <http://jena.hpl.hp.com/2005/11/Assembler#> .
> @prefix :        <#> .
>
> [] rdf:type fuseki:Server ;
>    fuseki:services (
>      <#service1>
>      <#service2>
>    ) .
>
> [] ja:loadClass "com.hp.hpl.jena.tdb.TDB" .
> tdb:DatasetTDB  rdfs:subClassOf  ja:RDFDataset .
> tdb:GraphTDB    rdfs:subClassOf  ja:Model .
>
> <#service1>  rdf:type fuseki:Service ;
>     fuseki:name              "dblp" ;
>     fuseki:serviceQuery      "sparql" ;
>     fuseki:dataset           <#dblp> ;
>     .
>
> <#dblp> rdf:type      tdb:DatasetTDB ;
>     tdb:location "/home/regis/datasources/dblp" .
>
> <#service2>  rdf:type fuseki:Service ;
>     fuseki:name              "drugbank" ;
>     fuseki:serviceQuery      "sparql" ;
>     fuseki:dataset           <#drugbank> ;
>     .
>
> <#drugbank> rdf:type      tdb:DatasetTDB ;
>     tdb:location "/home/regis/datasources/drugbank" .
>
> Can someone help me to configure it correctly?
>
> Regards,
> Regis.
>
>
>