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.
