Could not enable pellet reasoner.
If I use approach from the quoted thread, I see:
Error 500: tried to access field
com.hp.hpl.jena.reasoner.BaseInfGraph.isPrepared from class
org.mindswap.pellet.jena.PelletInfGraph
(running fuseki as
java -cp "${JARS}" org.apache.jena.fuseki.FusekiCmd --update
--desc=pellet-ex.ttl /inf
, where content of pellet-ex.ttl is given below).
If I try select pellet reasoner in modified config-inf-tdb.ttl (running
fuseki as
java -cp "${JARS}" org.apache.jena.fuseki.FusekiCmd --config=pellet.ttl /inf
, where pellet.ttl is given below), fuseki does not start with message:
com.hp.hpl.jena.assembler.exceptions.AmbiguousSpecificTypeException: cannot
find a most specific type for
file:///home/i/jena-fuseki-1.0.0/pellet.ttl#myReasoner, which has as
possibilities: ja:ReasonerFactory ja:InfModel.
doing:
root: file:///home/i/jena-fuseki-1.0.0/pellet.ttl#model_inf with type:
http://jena.hpl.hp.com/2005/11/Assembler#InfModel assembler class: class
com.hp.hpl.jena.assembler.assemblers.InfModelAssembler
root: file:///home/i/jena-fuseki-1.0.0/pellet.ttl#dataset with type:
http://jena.hpl.hp.com/2005/11/Assembler#RDFDataset assembler class: class
com.hp.hpl.jena.sparql.core.assembler.DatasetAssembler
What am I missing?
2013/10/7 Alexei Golovko <[email protected]>
> Thank you, I will try Pellet. (Actually, this was already in my plans, but
> section of Pellet documentation about using with Jena is so short. Though
> there seems to exist configuration example in
> http://mail-archives.apache.org/mod_mbox/jena-users/201106.mbox/%[email protected]%3E.)
>
>
I use fuseki-1.0.0, pellet-2.3.1.
echo ${JARS}
/home/i/jena-fuseki-1.0.0/fuseki-server.jar:/home/i/pellet-2.3.1/lib/aterm-java-1.6.jar:/home/i/pellet-2.3.1/lib/pellet-cli.jar:/home/i/pellet-2.3.1/lib/pellet-core.jar:/home/i/pellet-2.3.1/lib/pellet-datatypes.jar:/home/i/pellet-2.3.1/lib/pellet-el.jar:/home/i/pellet-2.3.1/lib/pellet-explanation.jar:/home/i/pellet-2.3.1/lib/pellet-jena.jar:/home/i/pellet-2.3.1/lib/pellet-modularity.jar:/home/i/pellet-2.3.1/lib/pellet-owlapiv3.jar:/home/i/pellet-2.3.1/lib/pellet-pellint.jar:/home/i/pellet-2.3.1/lib/pellet-query.jar:/home/i/pellet-2.3.1/lib/pellet-rules.jar:/home/i/pellet-2.3.1/lib/pellet-test.jar
pellet-ex.ttl (used as --desc=pellet-ex.ttl):
@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#> .
<#dataset> rdf:type ja:RDFDataset ;
ja:defaultGraph <#inf_graph> ;
.
<#inf_graph> rdf:type ja:InfModel ;
ja:reasoner [ja:reasonerClass
"org.mindswap.pellet.jena.PelletReasonerFactory" ;
] ;
ja:baseModel <#baseGraph>
.
<#baseGraph> a ja:MemoryModel ;
ja:content [ja:externalContent
<file:///home/i/jena-fuseki-1.0.0/Data/books.ttl>]
.
pellet.ttl (used as config):
# Licensed under the terms of http://www.apache.org/licenses/LICENSE-2.0
@prefix : <#> .
@prefix fuseki: <http://jena.apache.org/fuseki#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@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#> .
[] rdf:type fuseki:Server ;
ja:context [ ja:cxtName "arq:outputGraphBNodeLabels" ; ja:cxtValue
"true" ] ;
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 .
## ---------------------------------------------------------------
## Service with only SPARQL query on an inference model.
## Inference model bbase data in TDB.
<#service1> rdf:type fuseki:Service ;
fuseki:name "inf" ; # http://host/inf
fuseki:serviceQuery "sparql" ; # SPARQL query service
fuseki:serviceUpdate "update" ;
fuseki:dataset <#dataset> ;
.
<#dataset> rdf:type ja:RDFDataset ;
ja:defaultGraph <#model_inf> ;
.
<#model_inf> a ja:InfModel ;
###ja:baseModel <#tdbGraph> ;
#ja:baseModel <#memGraph> ; ##
ja:reasoner <#myReasoner> . <#myReasoner> #[
#ja:reasonerURL <http://jena.hpl.hp.com/2003/OWLFBRuleReasoner>
ja:reasoner [ja:reasonerClass
"org.mindswap.pellet.jena.PelletReasonerFactory"];
rdf:type ja:ReasonerFactory;
#rdf:type [owl:complementOf ja:InfModel]
. #] .
###<#tdbDataset> rdf:type tdb:DatasetTDB ;
### tdb:location "DB" ;
# If the unionDefaultGraph is used, then the "update" service should be
removed.
# The unionDefaultGraph is read only.
# tdb:unionDefaultGraph true ;
### .
###<#tdbGraph> rdf:type tdb:GraphTDB ;
### tdb:dataset <#tdbDataset> .
##
<#memGraph> a ja:MemoryModel .
