Hi Peter,
I do remember that we introduced a work-around to such a scenario
(literal as predicate) 3 years ago, by adding
// Return no results if subject is a Literal or predicate is
not a URI
// (this may happen in SPARQL queries)
if(subject instanceof Literal || (predicate != null &&
!(predicate instanceof URI))) {
return new NiceIterator<Triple>();
}
in the TopBraid RepositoryGraph.graphBaseFind mentioned in the stack
trace below. At this stage I cannot see how it could possibly still
place a literal as predicate into an SPO query, so I can only speculate
that this may be data living on the database.
Thanks
Holger
On 3/24/2015 9:41, Peter Ansell wrote:
Hi Scott,
Definitely file a bug with Sesame (and assign to me) if you have
testcases where the Rio parsers have bugs.
Thanks,
Peter
On 24 March 2015 at 09:55, Scott Henninger <[email protected]> wrote:
Hello, Rich; Is it the case that the names of some of your property URIs
start with numbers, such as <http://example.org/4321>? In the past we have
found that while this causes no problems in TopBraid and other back-ends, it
can parse this in Sesame as:
<http://example.org/> "4321"^^xsd:string
If you could check whether this is the case, we can take a closer look for
how to address the problem.
-- Scott
On 3/23/2015 12:15 PM, Rich Keller wrote:
I am having trouble creating a Sesame 2 repository connection with TBC-SE
v4.6.2. When I establish the connection, I get a popup error window saying
‘unexpected error’, but the window is visible only for a second so I can’t
make out any details. In the log, the following error is reported:
!ENTRY org.topbraid.eclipsex 4 0 2015-03-23 09:57:03.571
!MESSAGE ERROR [Thread-16] (ParseErrorLogger.java:32) - [Rio fatal] Illegal
predicate value: "4"^^<http://www.w3.org/2001/XMLSchema#integer> (573510,
-1)
So apparently a literal is being parsed in the position of a predicate. The
full log message is below. I don’t understand what queries TBC sends to
Sesame or exactly what is being parsed when this error appears (in line
573510, so it seems). This makes it difficult to debug. Any suggestions?
Thanks,
Rich
————————————————————————
!ENTRY org.topbraid.eclipsex 4 0 2015-03-23 09:57:03.571
!MESSAGE ERROR [Thread-16] (ParseErrorLogger.java:32) - [Rio fatal] Illegal
predicate value: "4"^^<http://www.w3.org/2001/XMLSchema#integer> (573510,
-1)
!ENTRY org.topbraid.sesame2 2 0 2015-03-23 09:57:04.043
!MESSAGE Error reported from Sesame
!STACK 0
org.openrdf.repository.RepositoryException: Malformed query result from
server
at org.openrdf.http.client.HTTPClient.getRDF(HTTPClient.java:1169)
at org.openrdf.http.client.HTTPClient.getStatements(HTTPClient.java:676)
at
org.openrdf.repository.http.HTTPRepositoryConnection.exportStatements(HTTPRepositoryConnection.java:283)
at
org.openrdf.repository.http.HTTPRepositoryConnection.getStatements(HTTPRepositoryConnection.java:269)
at
org.topbraid.sesame2.graph.RepositoryGraph.graphBaseFind(RepositoryGraph.java:95)
at com.hp.hpl.jena.graph.impl.GraphBase.find(GraphBase.java:268)
at
org.topbraid.core.graph.concurrent.ThreadSafeGraph.threadSafeFind(ThreadSafeGraph.java:250)
at
org.topbraid.core.graph.concurrent.ThreadSafeGraph.find(ThreadSafeGraph.java:240)
at
org.topbraid.core.graph.CachingGraph.addToCache(CachingGraph.java:145)
at
org.topbraid.core.graph.AbstractCachingGraph.find(AbstractCachingGraph.java:127)
at
org.topbraid.core.graph.AbstractCachingGraph.find(AbstractCachingGraph.java:120)
at
org.topbraidcomposer.core.registry.TBCCachingGraph.rebuildCache(TBCCachingGraph.java:114)
at
org.topbraidcomposer.core.registry.TBCCachingGraph.<init>(TBCCachingGraph.java:46)
at
org.topbraidcomposer.editors.utils.AbstractTBCPersonality.createCachingGraph(AbstractTBCPersonality.java:126)
at org.topbraid.core.io.IO.loadAndRegister(IO.java:322)
at org.topbraid.core.io.IO.load(IO.java:292)
at org.topbraidcomposer.core.io.TBCIO.loadModel(TBCIO.java:334)
at org.topbraidcomposer.core.io.TBCIO.loadModel(TBCIO.java:369)
at org.topbraidcomposer.core.io.TBCIO$2$1.run(TBCIO.java:420)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.openrdf.rio.RDFParseException: Illegal predicate value:
"4"^^<http://www.w3.org/2001/XMLSchema#integer> [line 573510]
at
org.openrdf.rio.helpers.RDFParserBase.reportFatalError(RDFParserBase.java:525)
at
org.openrdf.rio.turtle.TurtleParser.reportFatalError(TurtleParser.java:1107)
at
org.openrdf.rio.turtle.TurtleParser.parsePredicate(TurtleParser.java:394)
at
org.openrdf.rio.turtle.TurtleParser.parsePredicateObjectList(TurtleParser.java:309)
at
org.openrdf.rio.turtle.TurtleParser.parseTriples(TurtleParser.java:299)
at org.openrdf.rio.trig.TriGParser.parseGraph(TriGParser.java:142)
at org.openrdf.rio.trig.TriGParser.parseStatement(TriGParser.java:89)
at org.openrdf.rio.turtle.TurtleParser.parse(TurtleParser.java:184)
at org.openrdf.rio.turtle.TurtleParser.parse(TurtleParser.java:129)
at org.openrdf.http.client.HTTPClient.getRDF(HTTPClient.java:1163)
... 19 more
!ENTRY org.topbraidcomposer.core 4 0 2015-03-23 09:57:04.547
!MESSAGE Could not load /DW/atmonto.s2r or one of its imports.
The most recent URI was http://<SERVER OMITTED
HERE>/openrdf-sesame/repositories/atm
!STACK 0
java.lang.reflect.InvocationTargetException
at org.topbraidcomposer.core.io.TBCIO$2.run(TBCIO.java:493)
at
org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
Caused by: com.hp.hpl.jena.shared.ClosedException: Sesame reports
org.openrdf.repository.RepositoryException: Malformed query result from
server (See error log for details)
at
org.topbraid.sesame2.graph.RepositoryGraph.graphBaseFind(RepositoryGraph.java:100)
at com.hp.hpl.jena.graph.impl.GraphBase.find(GraphBase.java:268)
at
org.topbraid.core.graph.concurrent.ThreadSafeGraph.threadSafeFind(ThreadSafeGraph.java:250)
at
org.topbraid.core.graph.concurrent.ThreadSafeGraph.find(ThreadSafeGraph.java:240)
at
org.topbraid.core.graph.CachingGraph.addToCache(CachingGraph.java:145)
at
org.topbraid.core.graph.AbstractCachingGraph.find(AbstractCachingGraph.java:127)
at
org.topbraid.core.graph.AbstractCachingGraph.find(AbstractCachingGraph.java:120)
at
org.topbraidcomposer.core.registry.TBCCachingGraph.rebuildCache(TBCCachingGraph.java:114)
at
org.topbraidcomposer.core.registry.TBCCachingGraph.<init>(TBCCachingGraph.java:46)
at
org.topbraidcomposer.editors.utils.AbstractTBCPersonality.createCachingGraph(AbstractTBCPersonality.java:126)
at org.topbraid.core.io.IO.loadAndRegister(IO.java:322)
at org.topbraid.core.io.IO.load(IO.java:292)
at org.topbraidcomposer.core.io.TBCIO.loadModel(TBCIO.java:334)
at org.topbraidcomposer.core.io.TBCIO.loadModel(TBCIO.java:369)
at org.topbraidcomposer.core.io.TBCIO$2$1.run(TBCIO.java:420)
at java.lang.Thread.run(Thread.java:745)
Root exception:
com.hp.hpl.jena.shared.ClosedException: Sesame reports
org.openrdf.repository.RepositoryException: Malformed query result from
server (See error log for details)
at
org.topbraid.sesame2.graph.RepositoryGraph.graphBaseFind(RepositoryGraph.java:100)
at com.hp.hpl.jena.graph.impl.GraphBase.find(GraphBase.java:268)
at
org.topbraid.core.graph.concurrent.ThreadSafeGraph.threadSafeFind(ThreadSafeGraph.java:250)
at
org.topbraid.core.graph.concurrent.ThreadSafeGraph.find(ThreadSafeGraph.java:240)
at
org.topbraid.core.graph.CachingGraph.addToCache(CachingGraph.java:145)
at
org.topbraid.core.graph.AbstractCachingGraph.find(AbstractCachingGraph.java:127)
at
org.topbraid.core.graph.AbstractCachingGraph.find(AbstractCachingGraph.java:120)
at
org.topbraidcomposer.core.registry.TBCCachingGraph.rebuildCache(TBCCachingGraph.java:114)
at
org.topbraidcomposer.core.registry.TBCCachingGraph.<init>(TBCCachingGraph.java:46)
at
org.topbraidcomposer.editors.utils.AbstractTBCPersonality.createCachingGraph(AbstractTBCPersonality.java:126)
at org.topbraid.core.io.IO.loadAndRegister(IO.java:322)
at org.topbraid.core.io.IO.load(IO.java:292)
at org.topbraidcomposer.core.io.TBCIO.loadModel(TBCIO.java:334)
at org.topbraidcomposer.core.io.TBCIO.loadModel(TBCIO.java:369)
at org.topbraidcomposer.core.io.TBCIO$2$1.run(TBCIO.java:420)
at java.lang.Thread.run(Thread.java:745)
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