Hi, I've been trying to load a dataset using an assembler when starting Fuseki. I have no trouble loading RDF/XML when specifying external content using an http: url. Fuseki fails to load n3 data served the same way.
For example, if i use the following assembler, fuseki loads the dataset just fine: @prefix tdb: <http://jena.hpl.hp.com/2008/tdb#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix ja: <http://jena.hpl.hp.com/2005/11/Assembler#> . @prefix jpk: <http://jpk.iag.com/assembler#> . [] ja:loadClass "com.hp.hpl.jena.tdb.TDB" . jpk:root rdf:type ja:RDFDataset ; ja:defaultGraph jpk:testgraph; . jpk:testgraph rdf:type ja:MemoryModel ; ja:content [ ja:externalContent <http://localhost:8080/test/resources/IDTestModel.rdf >; ]; . However the following fails with a SAX parser error that I believe indicates that its still trying to parse RDF/XML when the external content is N3: @prefix tdb: <http://jena.hpl.hp.com/2008/tdb#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix ja: <http://jena.hpl.hp.com/2005/11/Assembler#> . @prefix jpk: <http://jpk.iag.com/assembler#> . [] ja:loadClass "com.hp.hpl.jena.tdb.TDB" . jpk:root rdf:type ja:RDFDataset ; ja:defaultGraph jpk:testgraph; . jpk:testgraph rdf:type ja:MemoryModel ; ja:content [ ja:contentEncoding "N3" ; ja:externalContent <http://localhost:8080/test/resources/IDTestModel.n3> ]; . Exception: C:\Program Files\jena-fuseki-0.2.1-incubating>java -jar fuseki-server.jar --update --desc=C:\git-repositories\snap-client\src\test\ resources\IDTestAssembler.ttl /DB 11:15:03 INFO Server :: Dataset from assembler 11:15:03 ERROR RDFDefaultErrorHandler :: http://localhost:8080/test/resources/IDTestModel.n3(line 1 column 1): Content is not allowe d in prolog. com.hp.hpl.jena.assembler.exceptions.AssemblerException: caught: org.xml.sax.SAXParseException; systemId: http://localhost:8080/test /resources/IDTestModel.n3; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog. doing: root: 4243f4d7:138de3f8d93:-7ffe with type: http://jena.hpl.hp.com/2005/11/Assembler#ContentItem assembler class: class com.hp.h pl.jena.assembler.assemblers.ContentAssembler root: 4243f4d7:138de3f8d93:-7fe8 with type: http://jena.hpl.hp.com/2005/11/Assembler#Content assembler class: class com.hp.hpl.j ena.assembler.assemblers.ContentAssembler root: http://jpk.iag.com/assembler#testgraph with type: http://jena.hpl.hp.com/2005/11/Assembler#MemoryModel assembler class: cl ass com.hp.hpl.jena.assembler.assemblers.MemoryModelAssembler root: http://jpk.iag.com/assembler#root with type: http://jena.hpl.hp.com/2005/11/Assembler#RDFDataset assembler class: class co m.hp.hpl.jena.sparql.core.assembler.DatasetAssembler at com.hp.hpl.jena.assembler.assemblers.AssemblerGroup$PlainAssemblerGroup.openBySpecificType(AssemblerGroup.java:138) at com.hp.hpl.jena.assembler.assemblers.AssemblerGroup$PlainAssemblerGroup.open(AssemblerGroup.java:117) at com.hp.hpl.jena.assembler.assemblers.AssemblerGroup$ExpandingAssemblerGroup.open(AssemblerGroup.java:81) at com.hp.hpl.jena.assembler.assemblers.AssemblerBase.open(AssemblerBase.java:52) ...(omitted)... at arq.cmdline.CmdArgModule.process(CmdArgModule.java:51) at arq.cmdline.CmdMain.mainMethod(CmdMain.java:96) at arq.cmdline.CmdMain.mainRun(CmdMain.java:59) at arq.cmdline.CmdMain.mainRun(CmdMain.java:46) at org.apache.jena.fuseki.FusekiCmd.main(FusekiCmd.java:101) Caused by: com.hp.hpl.jena.shared.JenaException: org.xml.sax.SAXParseException; systemId: http://localhost:8080/test/resources/IDTes tModel.n3; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog. at com.hp.hpl.jena.rdf.model.impl.RDFDefaultErrorHandler.fatalError(RDFDefaultErrorHandler.java:60) at com.hp.hpl.jena.rdf.arp.impl.ARPSaxErrorHandler.fatalError(ARPSaxErrorHandler.java:51) at com.hp.hpl.jena.rdf.arp.impl.XMLHandler.warning(XMLHandler.java:211) at com.hp.hpl.jena.rdf.arp.impl.XMLHandler.fatalError(XMLHandler.java:241) at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source) at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) ...(omitted) ... at com.hp.hpl.jena.assembler.assemblers.ContentAssembler.objectAsContent(ContentAssembler.java:154) at com.hp.hpl.jena.assembler.assemblers.ContentAssembler.addExternalContents(ContentAssembler.java:82) at com.hp.hpl.jena.assembler.assemblers.ContentAssembler.loadContent(ContentAssembler.java:68) at com.hp.hpl.jena.assembler.assemblers.ContentAssembler.open(ContentAssembler.java:44) at com.hp.hpl.jena.assembler.assemblers.AssemblerGroup$PlainAssemblerGroup.openBySpecificType(AssemblerGroup.java:130) ... 36 more Caused by: org.xml.sax.SAXParseException; systemId: http://localhost:8080/test/resources/IDTestModel.n3; lineNumber: 1; columnNumber : 1; Content is not allowed in prolog. at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) ... 61 more I've tried with and without the .n3 extension on the URL. I've also ensured that the content is being served as "text/n3" from apache. Here are the first few lines of n3 I'm trying to load: @prefix xsd: <http://www.w3.org/2001/XMLSchema#>. @prefix urn: <http://www.iag.com/2012/snap#>. <urn:1> a <urn:ID>; <http://www.w3.org/2000/01/rdf-schema#label> "This is the title"@en; <urn:hasTitle> "this is the title"@en; <urn:hasDescription> "this is the description"@en; <urn:hasCreator> <urn:2>; <urn:hasOrganization> <urn:3>... Am I using ja:contentEncoding property correctly? Regards, Jim Karavias
