Hi
It seems that the database , or some graph in it , is corrupted.
That's with :
"org.apache.jena" % "apache-jena-libs" % "2.12.1"
On another TDB directory instance , the same file is loaded fine.
The relevant code seems to be:
public synchronized String readPrefix(String graphName, String prefix) {
Node g = NodeFactory.createURI(graphName) ;
Node p = NodeFactory.createLiteral(prefix) ;
Iterator<Tuple<Node>> iter = nodeTupleTable.find(g, p, null) ;
try {
if ( ! iter.hasNext() )
return null ;
Tuple<Node> t = iter.next() ;
Node uri = t.get(2) ;
* return uri.getURI() ; // uri is probably null !*
} finally { Iter.close(iter) ; }
}
A user can hope that a better error message is displayed :) .
java -cp $JARS tdb.tdbloader --verbose --loc=TDB --graph=av-cobus-onto
$ONTOS/barter_user.owl.n3
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in
[jar:file:/home/jmv/deploy/semantic_forms_play-1.0-SNAPSHOT/lib/ch.qos.logback.logback-classic-1.1.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in
[jar:file:/home/jmv/deploy/semantic_forms_play-1.0-SNAPSHOT/lib/org.slf4j.slf4j-log4j12-1.7.6.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
explanation.
SLF4J: Actual binding is of type
[ch.qos.logback.classic.util.ContextSelectorStaticBinder]
Java maximum memory: 259522560
symbol:http://jena.hpl.hp.com/ARQ#constantBNodeLabels = true
symbol:http://jena.hpl.hp.com/ARQ#regexImpl = symbol:
http://jena.hpl.hp.com/ARQ#javaRegex
symbol:http://jena.hpl.hp.com/ARQ#stageGenerator =
com.hp.hpl.jena.tdb.solver.StageGeneratorDirectTDB@1049a04
symbol:http://jena.hpl.hp.com/ARQ#strictSPARQL = false
symbol:http://jena.hpl.hp.com/ARQ#enablePropertyFunctions = true
Exception in thread "main" java.lang.NullPointerException
* at
com.hp.hpl.jena.tdb.store.DatasetPrefixesTDB.readPrefix(DatasetPrefixesTDB.java:88)*
at
com.hp.hpl.jena.sparql.graph.GraphPrefixesProjection.get(GraphPrefixesProjection.java:96)
at
com.hp.hpl.jena.sparql.graph.GraphPrefixesProjection.set(GraphPrefixesProjection.java:74)
at
com.hp.hpl.jena.shared.impl.PrefixMappingImpl.setNsPrefix(PrefixMappingImpl.java:70)
at
com.hp.hpl.jena.tdb.store.bulkloader.BulkLoader$DestinationGraph.prefix(BulkLoader.java:361)
at
org.apache.jena.riot.lang.LangTurtleBase.emitPrefix(LangTurtleBase.java:492)
at
org.apache.jena.riot.lang.LangTurtleBase.directivePrefix(LangTurtleBase.java:164)
at
org.apache.jena.riot.lang.LangTurtleBase.directive(LangTurtleBase.java:140)
at
org.apache.jena.riot.lang.LangTurtleBase.runParser(LangTurtleBase.java:79)
at org.apache.jena.riot.lang.LangBase.parse(LangBase.java:42)
at
org.apache.jena.riot.RDFParserRegistry$ReaderRIOTLang.read(RDFParserRegistry.java:182)
at org.apache.jena.riot.RDFDataMgr.process(RDFDataMgr.java:906)
at org.apache.jena.riot.RDFDataMgr.parse(RDFDataMgr.java:687)
at org.apache.jena.riot.RDFDataMgr.parse(RDFDataMgr.java:666)
at org.apache.jena.riot.RDFDataMgr.parse(RDFDataMgr.java:654)
at
com.hp.hpl.jena.tdb.store.bulkloader.BulkLoader.loadTriples$(BulkLoader.java:129)
at
com.hp.hpl.jena.tdb.store.bulkloader.BulkLoader.loadNamedGraph(BulkLoader.java:102)
at com.hp.hpl.jena.tdb.TDBLoader.loadNamedGraph$(TDBLoader.java:253)
at com.hp.hpl.jena.tdb.TDBLoader.loadGraph$(TDBLoader.java:232)
at com.hp.hpl.jena.tdb.TDBLoader.loadGraph(TDBLoader.java:174)
at com.hp.hpl.jena.tdb.TDBLoader.load(TDBLoader.java:111)
at tdb.tdbloader.loadNamedGraph(tdbloader.java:113)
at tdb.tdbloader.exec(tdbloader.java:102)
at arq.cmdline.CmdMain.mainMethod(CmdMain.java:102)
at arq.cmdline.CmdMain.mainRun(CmdMain.java:63)
at arq.cmdline.CmdMain.mainRun(CmdMain.java:50)
at tdb.tdbloader.main(tdbloader.java:44)
--
Jean-Marc Vanel
Déductions SARL - Consulting, services, training,
Rule-based programming, Semantic Web
http://deductions-software.com/
+33 (0)6 89 16 29 52
Twitter: @jmvanel , @jmvanel_fr ; chat: irc://irc.freenode.net#eulergui
