Thanks for the response, Andy. For question 1 I get just the one row (:x
:graph1)
For question2 I am uploading a trig file with the two graph definitions via the
Fuseki “add data” user interface. So both named graphs are being uploaded in
the same file.
Thanks again
-- Scott
From: Andy Seaborne <a...@apache.org>
Sent: Sunday, September 15, 2024 10:21 AM
To: users@jena.apache.org
Subject: [EXTERNAL] Re: Using Fuseki to query the union of datasets - with
inference
CAUTION: This email originated from outside of the organization. Do not click
links or open attachments unless you recognize the sender and know the content
is safe.
On 12/09/2024 20:29, Scott Henninger wrote:
> Thank you for the response, Andy. Unfortunately I can’t reproduce what you
> describe here. I started Fuseki 5.1 with a config file using the config you
> gave me here. I then used the Fuseki “add data” to upload a TriG file with
> the data in your example. When I go to query the default graph, I don’t see
> any matches for :x. If I do a
> SELECT * WHERE { GRAPH ?g { :x rdf:type ?T }}
> I only get
> :x :graph1
>
> Did you run your test different somehow?
In the config.ttl I gave, only the :tdbGraph, which connects to
<urn:x-arq:UnionGraph>, the internal name for the union default graph
marked at "## *******"
Does SELECT * WHERE { :x rdf:type ?T } give two rows?
> A second question. I thought maybe the inference would appear after
> re-starting Fuseki, but the data was erased. I would have thought that {
> :tdbDataset a tdb:DatasetTDB } meant the data was saving in TDB, but it
> doesn’t seem to be persistent. Why is that?
How are you updating the data? Which named graph?
---
For RDFS, range+domain, subClass, subProperty:
This has two features that are different to what you describe:
1. The schema is in a separate graph, often a file.
2. It does not work for unionDefaultGraph which is a feature omission.
(2) ought to be fixed. It happens because DatasetRDFS works using the
Java API not via SPARQL; unionDefaultGraph is a SPARQL effect.
---- ----
fuseki:dataset :rdfsDataset ;
.
## RDFS
:rdfsDataset rdf:type ja:DatasetRDFS ;
ja:rdfsSchema <file:schema.ttl>;
ja:dataset :baseDataset;
.
:tdbDataset a tdb2:DatasetTDB ;
tdb2:location "DB2" ;
tdb2:unionDefaultGraph true ;
.
---- ----
Andy
> Thanks again for all your efforts
> -- Scott
>
> From: Andy Seaborne <a...@apache.org<mailto:a...@apache.org>>
> Sent: Thursday, September 12, 2024 6:10 AM
> To: users@jena.apache.org<mailto:users@jena.apache.org>
> Subject: [EXTERNAL] Re: Using Fuseki to query the union of datasets - with
> inference
>
> CAUTION: This email originated from outside of the organization. Do not click
> links or open attachments unless you recognize the sender and know the
> content is safe.
>
> Hi Scott,
>
> On 09/09/2024 21:28, Scott Henninger wrote:
>> Thank you for the config for unionDefaultGraph, Andy. I am able to see the
>> data both in the named graph and the default graph with your config. Now I
>> want to add inference to the default graph. In that case I do need to go
>> through a model, correct?
>>
>> Below is a config that I’m trying that doesn’t do what I want. I cannot see
>> the triples in the default graph and no inferences are created. What am I
>> doing wrong here? Specifically what would a config look like that performs
>> inferences that appear in the default graph?
>
> tdb:unionDefaultGraph only makes the SPARQL default graph appear as the
> union of named graphs.
>
> To get the inference code to see a union graph, try a named graph of
> <urn:x-arq:UnionGraph>
>
> The tdb:unionDefaultGraph can be removed unless you want to have
> (non-inference) access to the dataset.
>
> -----
> :defaultDataset a ja:RDFDataset ;
> ja:defaultGraph :infModel ;
> .
> :infModel a ja:InfModel ;
> ja:baseModel :tdbGraph ;
> ja:reasoner [
> ja:reasonerURL
> <http://jena.hpl.hp.com/2003/OWLFBRuleReasoner<http://jena.hpl.hp.com/2003/OWLFBRuleReasoner><http://jena.hpl.hp.com/2003/OWLFBRuleReasoner<http://jena.hpl.hp.com/2003/OWLFBRuleReasoner>>>
> ;
> ] ;
> .
>
> :tdbGraph a tdb:GraphTDB ;
> tdb:dataset :tdbDataset ;
> tdb:namedGraph <urn:x-arq:UnionGraph> ## *******
> .
>
> :tdbDataset a tdb:DatasetTDB ;
> tdb:location "DB" ;
> .
> -----
>
> I tried (TriG):
>
> -----------
> GRAPH :graph1 {
> :x rdf:type :T1 .
> }
>
> GRAPH :graph2 {
> :T1 rdfs:subClassOf :T2 .
> }
> -----------
>
> query:
> SELECT * { :x rdf:type ?T }
>
> and got T1 and T2.
>
>
>> :service1 rdf:type fuseki:Service ;
>> fuseki:name "union-graph-inference" ;
>> fuseki:serviceQuery "sparql" ;
>> fuseki:dataset : defaultDataset;
>> .
>> :defaultDataset a ja:RDFDataset ;
>> ja:defaultGraph :infModel ;
>> .
>> :infModel a ja:InfModel ;
>> ja:baseModel :tdbGraph ;
>> ja:reasoner [
>> ja:reasonerURL
>> <http://jena.hpl.hp.com/2003/OWLFBRuleReasoner<http://jena.hpl.hp.com/2003/OWLFBRuleReasoner><http://jena.hpl.hp.com/2003/OWLFBRuleReasoner<http://jena.hpl.hp.com/2003/OWLFBRuleReasoner>><http://jena.hpl.hp.com/2003/OWLFBRuleReasoner<http://jena.hpl.hp.com/2003/OWLFBRuleReasoner><http://jena.hpl.hp.com/2003/OWLFBRuleReasoner<http://jena.hpl.hp.com/2003/OWLFBRuleReasoner>>>>
>> ;
>> ] ;
>> .
>> :tdbGraph a tdb:GraphTDB ;
>> tdb:dataset :tdbDataset ;
>> .
>> :tdbDataset a tdb:DatasetTDB ;
>
>
> NB This is TDB1.
> It should not affect this query but TDB2 is a better choice long term.
> Both work in the illustration above.
> TDB2 is more robust and work better in Fuseki.
>
>> tdb:location "DB" ;
>> tdb:unionDefaultGraph true ;
>> .
>>
>>
>> Thanks for all your help
>> -- Scott
>>
>> From: Andy Seaborne
>> <a...@apache.org<mailto:a...@apache.org<mailto:a...@apache.org%3cmailto:a...@apache.org>>>
>> Sent: Saturday, August 24, 2024 9:52 AM
>> To:
>> users@jena.apache.org<mailto:users@jena.apache.org<mailto:users@jena.apache.org%3cmailto:users@jena.apache.org>>
>> Subject: Re: [EXTERNAL] Re: Using Fuseki to query the union of datasets
>>
>> CAUTION: This email originated from outside of the organization. Do not
>> click links or open attachments unless you recognize the sender and know the
>> content is safe.
>>
>>
>>
>> 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<mailto:pedro.win.s...@googlemail.com.INVALID<mailto:pedro.win.s...@googlemail.com.INVALID%3cmailto:pedro.win.s...@googlemail.com.INVALID<mailto:pedro.win.s...@googlemail.com.INVALID%3cmailto:pedro.win.s...@googlemail.com.INVALID%3cmailto:pedro.win.s...@googlemail.com.INVALID%3cmailto:pedro.win.s...@googlemail.com.INVALID>>>>
>>> Sent: Tuesday, July 23, 2024 4:35 PM
>>> To:
>>> users@jena.apache.org<mailto:users@jena.apache.org<mailto:users@jena.apache.org%3cmailto:users@jena.apache.org<mailto:users@jena.apache.org%3cmailto:users@jena.apache.org%3cmailto:users@jena.apache.org%3cmailto:users@jena.apache.org>>>
>>> Subject: [EXTERNAL] Re: Using Fuseki to query the union of datasets
>>>
>>> CAUTION: This email originated from outside of the organization. Do not
>>> click links or open attachments unless you recognize the sender and know
>>> the content is safe.
>>>
>>> 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><https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html<https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html>><https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html<https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html><https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html<https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html>>><https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html<https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html><https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html<https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html>><https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html<https://jena.apache.org/documentation/fuseki2/fuseki-configuration.html><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<mailto:scott.hennin...@ecstech.com%3cmailto:scott.hennin...@ecstech.com<mailto:scott.hennin...@ecstech.com%3cmailto:scott.hennin...@ecstech.com%3cmailto:scott.hennin...@ecstech.com%3cmailto:scott.hennin...@ecstech.com<mailto:scott.hennin...@ecstech.com%3cmailto:scott.hennin...@ecstech.com%3cmailto:scott.hennin...@ecstech.com%3cmailto:scott.hennin...@ecstech.com%3cmailto:scott.hennin...@ecstech.com%3cmailto:scott.hennin...@ecstech.com%3cmailto:scott.hennin...@ecstech.com%3cmailto: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#><http://jena.apache.org/fuseki#<http://jena.apache.org/fuseki#>><http://jena.apache.org/fuseki#<http://jena.apache.org/fuseki#><http://jena.apache.org/fuseki#<http://jena.apache.org/fuseki#>>><http://jena.apache.org/fuseki#<http://jena.apache.org/fuseki#><http://jena.apache.org/fuseki#<http://jena.apache.org/fuseki#>><http://jena.apache.org/fuseki#<http://jena.apache.org/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#><http://www.w3.org/1999/02/22-rdf-syntax-ns#<http://www.w3.org/1999/02/22-rdf-syntax-ns#>><http://www.w3.org/1999/02/22-rdf-syntax-ns#<http://www.w3.org/1999/02/22-rdf-syntax-ns#><http://www.w3.org/1999/02/22-rdf-syntax-ns#<http://www.w3.org/1999/02/22-rdf-syntax-ns#>>><http://www.w3.org/1999/02/22-rdf-syntax-ns#<http://www.w3.org/1999/02/22-rdf-syntax-ns#><http://www.w3.org/1999/02/22-rdf-syntax-ns#<http://www.w3.org/1999/02/22-rdf-syntax-ns#>><http://www.w3.org/1999/02/22-rdf-syntax-ns#<http://www.w3.org/1999/02/22-rdf-syntax-ns#><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#><http://www.w3.org/2000/01/rdf-schema#<http://www.w3.org/2000/01/rdf-schema#>><http://www.w3.org/2000/01/rdf-schema#<http://www.w3.org/2000/01/rdf-schema#><http://www.w3.org/2000/01/rdf-schema#<http://www.w3.org/2000/01/rdf-schema#>>><http://www.w3.org/2000/01/rdf-schema#<http://www.w3.org/2000/01/rdf-schema#><http://www.w3.org/2000/01/rdf-schema#<http://www.w3.org/2000/01/rdf-schema#>><http://www.w3.org/2000/01/rdf-schema#<http://www.w3.org/2000/01/rdf-schema#><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#><http://jena.hpl.hp.com/2008/tdb#<http://jena.hpl.hp.com/2008/tdb#>><http://jena.hpl.hp.com/2008/tdb#<http://jena.hpl.hp.com/2008/tdb#><http://jena.hpl.hp.com/2008/tdb#<http://jena.hpl.hp.com/2008/tdb#>>><http://jena.hpl.hp.com/2008/tdb#<http://jena.hpl.hp.com/2008/tdb#><http://jena.hpl.hp.com/2008/tdb#<http://jena.hpl.hp.com/2008/tdb#>><http://jena.hpl.hp.com/2008/tdb#<http://jena.hpl.hp.com/2008/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#><http://jena.hpl.hp.com/2005/11/Assembler#<http://jena.hpl.hp.com/2005/11/Assembler#>><http://jena.hpl.hp.com/2005/11/Assembler#<http://jena.hpl.hp.com/2005/11/Assembler#><http://jena.hpl.hp.com/2005/11/Assembler#<http://jena.hpl.hp.com/2005/11/Assembler#>>><http://jena.hpl.hp.com/2005/11/Assembler#<http://jena.hpl.hp.com/2005/11/Assembler#><http://jena.hpl.hp.com/2005/11/Assembler#<http://jena.hpl.hp.com/2005/11/Assembler#>><http://jena.hpl.hp.com/2005/11/Assembler#<http://jena.hpl.hp.com/2005/11/Assembler#><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 ;
>>>> .
>>>>
>>>>
