Hi there,
We upgraded to Fuseki 2 as soon as it is released. However the
configuration file we are using for Fuseki 1 is no longer working (or
compatible?) with Fuseki 2. We spent quite a lot of time to tune it but
we failed. There is no sufficient reference for this issue on your
website, either. That's why we are writing to you to seek some help.
Sorry to trouble you and thank you very much in advance.
We want to use TDB with RDFS reasoning and full text search, the
corresponding config file used in Fuseki 1 is as follows:
```
@prefix : <#> .
@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 text: <http://jena.apache.org/text#> .
@prefix spatial: <http://jena.apache.org/spatial#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
[] a fuseki:Server ;
fuseki:services (
<#tdb>
) .
# Custom code.
[] ja:loadClass "com.hp.hpl.jena.tdb.TDB" .
# TDB
tdb:DatasetTDB rdfs:subClassOf ja:RDFDataset .
tdb:GraphTDB rdfs:subClassOf ja:Model .
<#tdb> a fuseki:Service ;
fuseki:name "tdb" ; # http://host/tdb
fuseki:serviceQuery "sparql" ; # SPARQL query service
fuseki:serviceQuery "query" ;
fuseki:serviceUpdate "update" ;
fuseki:serviceUpload "upload" ; # Non-SPARQL upload
service
fuseki:serviceReadGraphStore "get" ;
fuseki:serviceReadWriteGraphStore "data" ;
fuseki:dataset :text_dataset ;
.
# ---- RDFS Inference models
# These must be incorporate in a dataset in order to use them.
# All in one file.
<#tdb_inf_ds> a ja:RDFDataset ;
ja:defaultGraph <#tdb_inf> ;
.
<#tdb_inf> a ja:InfModel ;
rdfs:label "RDFS Inference Model" ;
ja:baseModel <#tdb_graph> ;
ja:reasoner
[ ja:reasonerURL
<http://jena.hpl.hp.com/2003/RDFSExptRuleReasoner> ]
.
<#tdb_graph> a tdb:GraphTDB ;
tdb:dataset <#tdb_ds> .
# A TDB datset used for RDF storage
<#tdb_ds> a tdb:DatasetTDB;
tdb:location "Data";
.
## 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 .
# Solr index
#text:TextIndexSolr rdfs:subClassOf text:TextIndex .
:text_dataset a text:TextDataset ;
text:dataset <#tdb_inf_ds> ;
text:index <#textIndexLucene> ;
.
<#textIndexLucene> a text:TextIndexLucene ;
#text:directory <file:Text> ;
text:directory "mem" ;
text:entityMap <#entMap> ;
.
<#entMap> a text:EntityMap ;
text:entityField "uri" ;
text:defaultField "text" ;
text:map (
[ text:field "text" ; text:predicate rdfs:label ]
) .
```
Here is some test input:
```
@prefix cc: <http://creativecommons.org/ns#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix org: <http://www.w3.org/ns/org#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix pav: <http://purl.org/pav/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix schema: <http://schema.org/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
<http://id.vlaanderen.be/licentie/open-data-licentie-tegen-billijke-vergoeding-1.2#id>
rdf:type cc:License ;
cc:legalcode <http://opendataforum.info/Docs/licenties/GOD_BV.htm> ;
dct:title "Modellicentie 3 - Open Data Licentie tegen Billijke
Vergoeding - v1.2"@nl ;
pav:hasEarlierVersion
<http://id.vlaanderen.be/licentie/open-data-licentie-tegen-billijke-vergoeding#id>
;
pav:version "1.2"^^xsd:string ;
rdfs:label "Modellicentie 3 - Open Data Licentie tegen Billijke
Vergoeding"@nl ;
.
```
Delete existing datasets, start a new instance with config file, upload
the test input to the dataset, and we are stuck:
```
[2015-03-16 12:21:44] Fuseki INFO [12] Filename: test.ttl,
Content-Type=text/turtle, Charset=null => Turtle : Count=6 Triples=6
Quads=0
[2015-03-16 12:21:44] HttpAction WARN Exception during abort (operation
attempts to continue): Can't abort a write lock-transaction
[2015-03-16 12:21:44] Fuseki INFO [12] 500 Server Error (199 ms)
```
If we ask Fuseki to list all triples now, we can discover that the
triple for "rdfs:label" exists, but all other triples are missing.
So we tried an indirect approach: delete the triple for "rdfs:label",
the upload succeeds; then insert this triple:
```
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
INSERT DATA {
<http://id.vlaanderen.be/licentie/open-data-licentie-tegen-billijke-vergoeding-1.2#id>
rdfs:label "Modellicentie 3 - Open Data Licentie tegen Billijke
Vergoeding"@nl .
}
```
However, we got an exception:
```
[2015-03-16 12:33:37] Fuseki INFO [14] POST
http://localhost:3030/tdb/update
[2015-03-16 12:33:37] Fuseki INFO [14] POST /tdb :: 'update' ::
[application/x-www-form-urlencoded charset=UTF-8] ?
[2015-03-16 12:33:37] HttpAction WARN Exception during abort (operation
attempts to continue): Can't abort a write lock-transaction
java.lang.NullPointerException
at
org.apache.jena.query.text.TextDocProducerTriples.change(TextDocProducerTriples.java:66)
at
com.hp.hpl.jena.sparql.core.DatasetGraphMonitor.record(DatasetGraphMonitor.java:194)
at
com.hp.hpl.jena.sparql.core.DatasetGraphMonitor.add$(DatasetGraphMonitor.java:120)
at
com.hp.hpl.jena.sparql.core.DatasetGraphMonitor.add(DatasetGraphMonitor.java:96)
at
com.hp.hpl.jena.sparql.core.DatasetGraphWrapper.add(DatasetGraphWrapper.java:88)
at
com.hp.hpl.jena.sparql.modify.UpdateEngineWorker.addToGraphStore(UpdateEngineWorker.java:555)
at
com.hp.hpl.jena.sparql.modify.UpdateEngineWorker.visit(UpdateEngineWorker.java:315)
at
com.hp.hpl.jena.sparql.modify.request.UpdateDataInsert.visit(UpdateDataInsert.java:27)
at
com.hp.hpl.jena.sparql.modify.UpdateVisitorSink.send(UpdateVisitorSink.java:46)
at
com.hp.hpl.jena.sparql.modify.UpdateVisitorSink.send(UpdateVisitorSink.java:26)
at org.apache.jena.atlas.iterator.Iter.sendToSink(Iter.java:695)
at org.apache.jena.atlas.iterator.Iter.sendToSink(Iter.java:702)
at
com.hp.hpl.jena.sparql.modify.UpdateProcessorBase.execute(UpdateProcessorBase.java:61)
at com.hp.hpl.jena.update.UpdateAction.execute$(UpdateAction.java:234)
at com.hp.hpl.jena.update.UpdateAction.execute(UpdateAction.java:224)
at com.hp.hpl.jena.update.UpdateAction.execute(UpdateAction.java:204)
at com.hp.hpl.jena.update.UpdateAction.execute(UpdateAction.java:186)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.execute(SPARQL_Update.java:222)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.executeForm(SPARQL_Update.java:197)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.perform(SPARQL_Update.java:105)
at
org.apache.jena.fuseki.servlets.ActionSPARQL.executeLifecycle(ActionSPARQL.java:130)
at
org.apache.jena.fuseki.servlets.SPARQL_UberServlet.serviceDispatch(SPARQL_UberServlet.java:324)
at
org.apache.jena.fuseki.servlets.SPARQL_UberServlet.executeAction(SPARQL_UberServlet.java:236)
at
org.apache.jena.fuseki.servlets.ActionSPARQL.execCommonWorker(ActionSPARQL.java:84)
at
org.apache.jena.fuseki.servlets.ActionBase.doCommon(ActionBase.java:81)
at
org.apache.jena.fuseki.servlets.FusekiFilter.doFilter(FusekiFilter.java:71)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1632)
at
org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
at
org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at
org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at
org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at
org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
at
org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
at
org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
at
org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
at
org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
at
org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
at
org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
at
org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1624)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:550)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:568)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1110)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:479)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1044)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:459)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:281)
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:232)
at
org.eclipse.jetty.io.AbstractConnection$1.run(AbstractConnection.java:505)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:607)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:536)
at java.lang.Thread.run(Thread.java:745)
[2015-03-16 12:33:37] Fuseki INFO [14] 500 Server Error (163 ms)
```
Then we stopped our trials because we can't find more possibilities.
Does anybody have any clue about it? Thank you in advance and have a
nice day.
Regards,
Yang
