Got it. I was not sufficiently mindful of the distinction (and
non-coerce-ability) between a model and a dataset.
Everything worked when I made these declarations:
(after ja:loadClass "com.hp.hpl.jena.tdb.TDB")
tdb:GraphTDB rdfs:subclassOf ja:Model.
<#myDB_graph> rdf:type tdb:GraphTDB;
tdb:location "path/to/tdb-file".
<#my_rdfs_graph> ja:baseModel <#myDB_graph>
ja:reasoner [ja:reasonerURL
<http://jena.hpl.hp.com/2003/RDFSExptRuleReasoner>].
<#my_rdfs_dataset> rdf:type ja:RDFDataset;
ja:defaultGraph <#my_rdfs_graph>.
And then pointed the service at the dataset.
Thanks Andy!
On 09/14/2011 05:11 AM, Andy Seaborne wrote:
Fuseki is easier to use.
On 14/09/11 12:52, Eric Scott wrote:
Oh. I should add that the error I get is this:
Query execution error: com.hp.hpl.jena.query.QueryExecException:
No dataset description for query
That happens where there is no dataset for the execution and no
description (FROM/FROM NAMED - and you have that turned off by using
ProcessorSPARQL_FixedDS).
What does the Joseki log file say?
On 09/13/2011 04:35 PM, Eric Scott wrote:
Hi all -
I'm having some trouble wrapping my head around assemblers that bring
inferencers into the mix.
I have a minimal pair.
This works fine, and I can query the data set in Joseki (but for
example subClassOf links only extend one degree):
<#myDB_RDFSService>
rdf:type joseki:Service;
rdfs:label "Service for MYDB data stored in TDB file, to which I hope
to apply an rdfs inferencer.";
joseki:serviceRef "myDB_RDFS"; # web.xml must route this name to
Joseki.
joseki:dataset <#myDB>; # defined below
joseki:processor joseki:ProcessorSPARQL_FixedDS ;
.
<#myDB> rdf:type tdb:DatasetTDB;
rdfs:label "The database";
tdb:location "/home/escott/TDB/myDB";
.
This does not:
<#myDB_RDFSService>
rdf:type joseki:Service;
rdfs:label "Service for MYDB data stored in TDB file using RDFS
inferencer";
joseki:serviceRef "myDB_RDFS"; # web.xml must route this name to
Joseki.
joseki:dataset <#myDB_rdfs>; ## <-- THIS CHANGED
joseki:processor joseki:ProcessorSPARQL_FixedDS ;
.
Ithink you need you need to include rdf:type ja:RDFDataset ;
<#myDBwithRDFS> rdf:type ja:RDFDataset ;
ja:defaultGraph <#myRDFS> ;
.
<#myRDFS> ja:baseModel <#myDB>; # defined as above
ja:reasoner [ja:reasonerURL
<http://jena.hpl.hp.com/2003/RDFSExptRuleReasoner>]
.
The log file should show nothing happening for <#myDB_rdfs>
Andy
<#myDB_rdfs> ja:baseModel <#myDB>; # defined as above
ja:reasoner [ja:reasonerURL
<http://jena.hpl.hp.com/2003/RDFSExptRuleReasoner>]
.
This last clause I'm taking more or less verbatim from the assembler
how-to.
What am I missing?
Thanks for any help!
Regards,
