On 24/07/2024 20:08, Scott Henninger wrote:
Thank you for the response, Pedro. However it seems to me that I am already
applying the approach you reference in the page. See lines 35-37 int the
config file I included. Perhaps I am applying it wrong? If so, where am I
going wrong?
You don't need to go through a model. Connect the fuseki:Service to the
dataset with tdb:unionDefaultGraph
:service1 rdf:type fuseki:Service ;
fuseki:name "union-graph" ;
fuseki:serviceQuery "sparql" ;
fuseki:dataset :tdbDataset ;
:tdbDataset rdf:type tdb:DatasetTDB ;
tdb:location "DB" ;
tdb:unionDefaultGraph true ;
.
Andy
-- Scott
From: Pedro <pedro.win.s...@googlemail.com.INVALID>
Sent: Tuesday, July 23, 2024 4:35 PM
To: users@jena.apache.org
Subject: [EXTERNAL] Re: Using Fuseki to query the union of datasets
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Hi Scott
Look at the TDB and TDB2 examples in
https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html<https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html>
Uncomment the line
tdb:unionDefaultGraph true;
Cheers!
On Tue, 23 Jul 2024, 22:29 Scott Henninger,
<scott.hennin...@ecstech.com<mailto:scott.hennin...@ecstech.com>>
wrote:
I am attempting to use Fuseki to query the union of a set of datasets. I
am using the following configuration to define a TDB dataset named
"union-graph" and setting tdb:unionDefaultGraph to true to query the union
of the datasets. However when I query "union-graph" I do not see the
triples from the datasets I have populated. How can I configure Fuseki to
query the union of datasets?
Thank you
-- Scott
@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#>>
.
[] rdf:type fuseki:Server ;
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 .
:service1 rdf:type fuseki:Service ;
fuseki:name "union-graph" ;
fuseki:serviceQuery "sparql" ;
fuseki:dataset :dataset ;
.
:dataset rdf:type ja:RDFDataset ;
ja:defaultGraph :model_default ;
.
:model_default a ja:InfModel ;
ja:baseModel :tdbGraph ;
.
:tdbDataset rdf:type tdb:DatasetTDB ;
tdb:location "DB" ;
tdb:unionDefaultGraph true ;
.
:tdbGraph rdf:type tdb:GraphTDB ;
tdb:dataset :tdbDataset ;
.
