My bad. I suspect I fixed one possible issue and tested on my reduced
example but not on your full example. I thought I had a case that was
equivalent.
I can reproduce it with current development ...
Andy
On 29/08/13 13:45, Stuart Taylor wrote:
I've tried my test with the build #4 snapshot. I still get the
concurrent modification exception that I'd attached the log file for
previously.
I've also attached the log file for ' Can't abort a write
lock-transaction' exception using the current build - this one is a lot
easier to reproduce.
Thanks,
Stuart.
On 28/08/13 23:59, Andy Seaborne wrote:
Hi Stuart,
I've fixed something in the area - there's a new snapshot build.
Build #3 or later contains it:
https://repository.apache.org/content/repositories/snapshots/org/apache/jena/jena-fuseki/1.0.0-SNAPSHOT/
Note the version number is 1.0.0-SNAPSHOT.
Andy
On 28/08/13 19:52, Taylor, Stuart Rae wrote:
The example runs without the exception if I don't use an inference
graph.
I tried to check if the update actually worked, but in doing this I
found that this example only produces the exception if the triple
being inserted is already in the graph. I can also make updates after
the select query that causes the exception has run, without raising
any further exceptions - it only seems to be happening the first
time. Although I'm not sure how well this example captures things.
________________________________________
From: Andy Seaborne <[email protected]>
Sent: 28 August 2013 17:54
To: [email protected]
Subject: Re: Fuseki concurrency problems: text search + inference
On 28/08/13 15:17, Stuart Taylor wrote:
Hi Andy,
Hi stuart,
Thanks for the example. Do you happen to know if things work without
the inference graph in between
I don't see a syntax error in an update - do updates ever work?
Andy
I've managed to reproduce the exception in JENA-523, just by having an
error in the update query syntax.
I've also managed to get the concurrent modification exception
triggered
by a more minimal example and without causing the exception in
JENA-523,
so I'm not sure whether it's a separate issue or not.
The test queries sent to Fuseki using curl. The first and third query
return 200, the second throws the exception. I've also attached the log
output from Fuseki.
curl -v -H "Content-type: application/x-www-form-urlencoded" -X POST
--data-urlencode 'update=prefix hc:
<http://www.hebrideanconnections.com/hebridean.owl#>
insert data { hc:633 hc:associatedWith hc:633 }' \
http://localhost:3030/dataset/update
curl -v --data-urlencode 'query=prefix hc:
<http://www.hebrideanconnections.com/hebridean.owl#>
select * where { hc:633 ?p ?o }' \
http://localhost:3030/dataset/query
curl -v --data-urlencode 'query=prefix hc:
<http://www.hebrideanconnections.com/hebridean.owl#>
select * where { hc:633 ?p ?o }' \
http://localhost:3030/dataset/query
Thanks,
Stuart.
On 28/08/13 10:05, Andy Seaborne wrote:
Recorded as JENA-523
https://issues.apache.org/jira/browse/JENA-523
On 28/08/13 09:43, Andy Seaborne wrote:
On 27/08/13 22:47, Taylor, Stuart Rae wrote:
Hi Andy,
I didn't have the '--verbose' flag set when I created the logs
for the
previous message so I didn't get the update query that caused the
exception. However I've tried again with verbose logging, and
managed
to get the exception thrown for the select query. The queries
*should*
be valid SPARQL (they're run several times in our system), but I
will
get some better logs asap.
In this case, I have an update which returns HTTP 200:
INSERT {
?subject hc:associatedWith hc:633 ;
} WHERE {
?subject ?p ?o
FILTER ( ?subject = hc:90623 ) }
Then the next select query triggers the
ConcurrentModificationException in my last message.
Sorry for the vagueness. I will try to isolate the conditions
tomorrow.
If I understand what's going on (and I don't :-) ...
It's the first exception that matters - the later ones are
consequences
of the
17:43:33 WARN DatasetGraphText :: Exception in abort: Can't
abort a
write lock-transaction
It is true you can't aborted a lock-managed transaction ... but
the code
seems to include the setup (parsing the update) in the
So ...
1/ Need to find why the abort happened - the stacktrace suggested a
parse error but I'm not 100% sure.
2/ The code ought to clean up better anyway (the later exceptions).
Andy
Thanks,
Stuart.
________________________________________
From: Andy Seaborne <[email protected]>
Sent: 27 August 2013 21:36
To: [email protected]
Subject: Re: Fuseki concurrency problems: text search + inference
Stuart - quick question - and from code review, not use test running
...
What was the update? Could it be that there was a syntax error in
it?
Andy
On 27/08/13 18:16, Stuart Taylor wrote:
Hi all,
I'm having some more problems with Fuseki and full text search.
I have
an InfModel backed by a TDB dataset, which I've added a Lucene text
index to. I'm having problems with updates and select queries
resulting
in exceptions being thrown by Fuseki.
I am running Fuseki 0.2.8-SNAPSHOT 20130826-0756 which should
include
the fixes for JENA-522 (where I was having problems earlier).
Unfortunately I haven't managed to come up with a complete running
example which reproduces the problem, but while I do that the stack
traces from Fuseki's log might be able to shed some light on
what is
happening. I have also added the assembler file for my Fuseki set
up at
the end of this message.
After some SPARQL Update queries I occasionally get:
17:43:33 WARN DatasetGraphText :: Exception in abort: Can't
abort a
write lock-transaction
com.hp.hpl.jena.sparql.JenaTransactionException: Can't abort a
write
lock-transaction
at
com.hp.hpl.jena.sparql.core.DatasetGraphWithLock._abort(DatasetGraphWithLock.java:100)
at
com.hp.hpl.jena.sparql.core.DatasetGraphTrackActive.abort(DatasetGraphTrackActive.java:56)
at
org.apache.jena.query.text.DatasetGraphText.abort(DatasetGraphText.java:139)
at
org.apache.jena.fuseki.servlets.HttpAction.abort(HttpAction.java:142)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.execute(SPARQL_Update.java:248)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.executeForm(SPARQL_Update.java:212)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.perform(SPARQL_Update.java:110)
at
org.apache.jena.fuseki.servlets.SPARQL_ServletBase.executeLifecycle(SPARQL_ServletBase.java:184)
at
org.apache.jena.fuseki.servlets.SPARQL_ServletBase.executeAction(SPARQL_ServletBase.java:165)
at
org.apache.jena.fuseki.servlets.SPARQL_ServletBase.execCommonWorker(SPARQL_ServletBase.java:153)
at
org.apache.jena.fuseki.servlets.SPARQL_ServletBase.doCommon(SPARQL_ServletBase.java:73)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.doPost(SPARQL_Update.java:80)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
at
org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
at
org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:960)
at
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1021)
at
org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865)
at
org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
at
org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
at
org.eclipse.jetty.server.nio.BlockingChannelConnector$BlockingChannelEndPoint.run(BlockingChannelConnector.java:298)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:722)
17:43:33 WARN HttpAction :: Transaction still active in
endWriter - no commit or abort seen (forced abort)
17:43:33 WARN DatasetGraphText :: Exception in abort: this
IndexWriter is closed
org.apache.lucene.store.AlreadyClosedException: this IndexWriter is
closed
at
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:614)
at
org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:628)
at
org.apache.lucene.index.IndexWriter.rollback(IndexWriter.java:1974)
at
org.apache.jena.query.text.TextIndexLucene.abortIndexing(TextIndexLucene.java:107)
at
org.apache.jena.query.text.DatasetGraphText.abort(DatasetGraphText.java:137)
at
org.apache.jena.fuseki.servlets.HttpAction.endWrite(HttpAction.java:153)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.execute(SPARQL_Update.java:257)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.executeForm(SPARQL_Update.java:212)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.perform(SPARQL_Update.java:110)
at
org.apache.jena.fuseki.servlets.SPARQL_ServletBase.executeLifecycle(SPARQL_ServletBase.java:184)
at
org.apache.jena.fuseki.servlets.SPARQL_ServletBase.executeAction(SPARQL_ServletBase.java:165)
at
org.apache.jena.fuseki.servlets.SPARQL_ServletBase.execCommonWorker(SPARQL_ServletBase.java:153)
at
org.apache.jena.fuseki.servlets.SPARQL_ServletBase.doCommon(SPARQL_ServletBase.java:73)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.doPost(SPARQL_Update.java:80)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
at
org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
at
org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:960)
at
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1021)
at
org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865)
at
org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
at
org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
at
org.eclipse.jetty.server.nio.BlockingChannelConnector$BlockingChannelEndPoint.run(BlockingChannelConnector.java:298)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:722)
Then running SELECT queries shortly after results in:
17:46:23 WARN Fuseki :: [13] RC = 500 : Iterator:
started
at 24, now 30
java.util.ConcurrentModificationException: Iterator: started at 24,
now 30
at
com.hp.hpl.jena.tdb.sys.DatasetControlMRSW.policyError(DatasetControlMRSW.java:157)
at
com.hp.hpl.jena.tdb.sys.DatasetControlMRSW.access$000(DatasetControlMRSW.java:32)
at
com.hp.hpl.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.checkCourrentModification(DatasetControlMRSW.java:110)
at
com.hp.hpl.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.hasNext(DatasetControlMRSW.java:118)
at
org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:312)
at
org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:312)
at
org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:312)
at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:910)
at
com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at
com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:103)
at
com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:103)
at
com.hp.hpl.jena.reasoner.rulesys.impl.TopLevelTripleMatchFrame.nextMatch(TopLevelTripleMatchFrame.java:55)
at
com.hp.hpl.jena.reasoner.rulesys.impl.LPInterpreter.run(LPInterpreter.java:330)
at
com.hp.hpl.jena.reasoner.rulesys.impl.LPInterpreter.next(LPInterpreter.java:192)
at
com.hp.hpl.jena.reasoner.rulesys.impl.Generator.pump(Generator.java:250)
at
com.hp.hpl.jena.reasoner.rulesys.impl.Generator.pump(Generator.java:237)
at
com.hp.hpl.jena.reasoner.rulesys.impl.LPBRuleEngine.pump(LPBRuleEngine.java:308)
at
com.hp.hpl.jena.reasoner.rulesys.impl.LPTopGoalIterator.moveForward(LPTopGoalIterator.java:109)
at
com.hp.hpl.jena.reasoner.rulesys.impl.LPTopGoalIterator.hasNext(LPTopGoalIterator.java:222)
at
com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at
com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at
com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:54)
at
com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90)
at
com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:54)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIterTriplePattern$TripleMapper.hasNextBinding(QueryIterTriplePattern.java:151)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:81)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIterBlockTriples.hasNextBinding(QueryIterBlockTriples.java:64)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:40)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:40)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:40)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at
com.hp.hpl.jena.sparql.engine.ResultSetStream.hasNext(ResultSetStream.java:75)
at
com.hp.hpl.jena.sparql.resultset.ResultSetMem.<init>(ResultSetMem.java:97)
at
com.hp.hpl.jena.query.ResultSetFactory.makeRewindable(ResultSetFactory.java:420)
at
com.hp.hpl.jena.sparql.resultset.TextOutput.write(TextOutput.java:149)
at
com.hp.hpl.jena.sparql.resultset.TextOutput.write(TextOutput.java:132)
at
com.hp.hpl.jena.sparql.resultset.TextOutput.write(TextOutput.java:120)
at
com.hp.hpl.jena.sparql.resultset.TextOutput.format(TextOutput.java:67)
at
com.hp.hpl.jena.query.ResultSetFormatter.out(ResultSetFormatter.java:135)
at
org.apache.jena.fuseki.servlets.ResponseResultSet$3.output(ResponseResultSet.java:238)
at
org.apache.jena.fuseki.servlets.ResponseResultSet.output(ResponseResultSet.java:283)
at
org.apache.jena.fuseki.servlets.ResponseResultSet.textOutput(ResponseResultSet.java:244)
at
org.apache.jena.fuseki.servlets.ResponseResultSet.doResponseResultSet$(ResponseResultSet.java:145)
at
org.apache.jena.fuseki.servlets.ResponseResultSet.doResponseResultSet(ResponseResultSet.java:88)
at
org.apache.jena.fuseki.servlets.SPARQL_Query.sendResults(SPARQL_Query.java:348)
at
org.apache.jena.fuseki.servlets.SPARQL_Query.execute(SPARQL_Query.java:244)
at
org.apache.jena.fuseki.servlets.SPARQL_Query.executeWithParameter(SPARQL_Query.java:195)
at
org.apache.jena.fuseki.servlets.SPARQL_Query.perform(SPARQL_Query.java:80)
at
org.apache.jena.fuseki.servlets.SPARQL_ServletBase.executeLifecycle(SPARQL_ServletBase.java:184)
at
org.apache.jena.fuseki.servlets.SPARQL_ServletBase.executeAction(SPARQL_ServletBase.java:165)
at
org.apache.jena.fuseki.servlets.SPARQL_ServletBase.execCommonWorker(SPARQL_ServletBase.java:153)
at
org.apache.jena.fuseki.servlets.SPARQL_ServletBase.doCommon(SPARQL_ServletBase.java:73)
at
org.apache.jena.fuseki.servlets.SPARQL_Query.doGet(SPARQL_Query.java:61)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:735)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1448)
at
org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:82)
at
org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:294)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
at
org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
at
org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
at
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
at
org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
at
org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at
org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
at
org.eclipse.jetty.server.nio.BlockingChannelConnector$BlockingChannelEndPoint.run(BlockingChannelConnector.java:298)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:722)
17:46:23 INFO Fuseki :: [13] 500 Iterator: started
at 24,
now 30 (25 ms)
Here is the assembler file:
@prefix : <#> .
@prefix fuseki:
<http://jena.apache.org/fuseki#><http://jena.apache.org/fuseki#> .
@prefix rdf:
<http://www.w3.org/1999/02/22-rdf-syntax-ns#><http://www.w3.org/1999/02/22-rdf-syntax-ns#>
.
@prefix rdfs:
<http://www.w3.org/2000/01/rdf-schema#><http://www.w3.org/2000/01/rdf-schema#>
.
@prefix tdb:
<http://jena.hpl.hp.com/2008/tdb#><http://jena.hpl.hp.com/2008/tdb#>
.
@prefix ja:
<http://jena.hpl.hp.com/2005/11/Assembler#><http://jena.hpl.hp.com/2005/11/Assembler#>
.
@prefix text:
<http://jena.apache.org/text#><http://jena.apache.org/text#> .
@prefix dc:
<http://purl.org/dc/terms/><http://purl.org/dc/terms/> .
[] rdf:type fuseki:Server ;
# Timeout - server-wide default: milliseconds.
# Format 1: "1000" -- 1 second timeout
# Format 2: "10000,60000" -- 10s timeout to first result,
then 60s
timeout to for rest of query.
# See java doc for ARQ.queryTimeout
ja:context [ ja:cxtName "arq:queryTimeout" ; ja:cxtValue
"12000,50000" ] ;
fuseki:services (
<#service1>
) .
# Custom code.
[] ja:loadClass "com.hp.hpl.jena.tdb.TDB" .
# TDB
tdb:DatasetTDB rdfs:subClassOf ja:RDFDataset .
tdb:GraphTDB rdfs:subClassOf ja:Model .
## Initialize text query
[] ja:loadClass "org.apache.jena.query.text.TextQuery" .
# A TextDataset is a regular dataset with a text index.
text:TextDataset rdfs:subClassOf ja:RDFDataset .
# Lucene index
text:TextIndexLucene rdfs:subClassOf text:TextIndex .
## ---------------------------------------------------------------
## Service with only SPARQL query on an inference model.
## Inference model bbase data in TDB.
<#service1> rdf:type fuseki:Service ;
rdfs:label "TDB/text service" ;
fuseki:name "dataset" ; #
http://host/dataset
fuseki:serviceQuery "query" ;
fuseki:serviceUpdate "update" ;
fuseki:serviceUpload "upload" ;
fuseki:serviceReadWriteGraphStore "data" ;
fuseki:serviceReadGraphStore "get" ;
fuseki:dataset <#dataset_fulltext> ;
.
<#dataset_inf> rdf:type ja:RDFDataset ;
ja:defaultGraph <#model_inf> .
<#model_inf> rdf:type ja:Model ;
ja:baseModel <#tdbGraph> ;
ja:reasoner [ ja:reasonerURL
<http://jena.hpl.hp.com/2003/OWLMicroFBRuleReasoner><http://jena.hpl.hp.com/2003/OWLMicroFBRuleReasoner>
] .
<#tdbDataset> rdf:type tdb:DatasetTDB ;
tdb:location "Data" .
<#tdbGraph> rdf:type tdb:GraphTDB ;
tdb:dataset <#tdbDataset> .
# Dataset with full text index.
<#dataset_fulltext> rdf:type text:TextDataset ;
text:dataset <#dataset_inf> ;
##text:dataset <#tdbDataset> ;
text:index <#indexLucene> .
# Text index description
<#indexLucene> a text:TextIndexLucene ;
text:directory <file:Lucene><file:Lucene> ;
##text:directory "mem" ;
text:entityMap <#entMap> ;
.
# Mapping in the index
# URI stored in field "uri"
# rdfs:label is mapped to field "text"
<#entMap> a text:EntityMap ;
text:entityField "uri" ;
text:defaultField "text" ;
text:map (
[ text:field "text" ; text:predicate dc:title ]
[ text:field "text" ; text:predicate dc:description ]
) .
Any advice appreciated!
Thanks,
Stuart.
The University of Aberdeen is a charity registered in Scotland, No
SC013683.
The University of Aberdeen is a charity registered in Scotland, No
SC013683.
The University of Aberdeen is a charity registered in Scotland, No
SC013683.
The University of Aberdeen is a charity registered in Scotland, No
SC013683.
The University of Aberdeen is a charity registered in Scotland, No SC013683.
