Jack,
are you sure the SPIN functions are registered? You need something like
SPINModuleRegistry.get().registerAll(ontModel, null);
where ontModel is a Jena Model containing the function definitions
(typically stored in .spin.ttl files).
Holger
On 3/5/2015 2:29, Jack Hodges wrote:
Holger,
I finally got jena (and fuseki) to build with the maven pom additions
you provided for the spin library. I checked the resulting
jena-fuseki-1.0.0-server.jar file and the spin modules are in it. I
launched this with 'fuseki-server --update --mem /ds' and then loaded
my models into it. Then I ran the query on it that works fine in
composer. I am inclined to say that the result I get back is empty but
it really looks like:
-------
| res |
=======
| |
-------
which is suggestive that there is a single result but that it isn't in ?res.As
before, Fuseki can see my spin functions but it seems like it still cannot
execute them. I am wondering if I did something wrong because I did follow your
instructions to the letter.
Here is the query:
prefix sp: <http://spinrdf.org/sp#>
prefix afn: <http://jena.hpl.hp.com/ARQ/function#>
prefix fn: <http://www.w3.org/2005/xpath-functions#>
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix quantity: <http://qudt.org/vocab/quantity#>
prefix skos: <http://www.w3.org/2004/02/skos/core#>
prefix spin: <http://spinrdf.org/spin#>
prefix act: <http://siemens.com/schemas/activity#>
SELECT ?res WHERE {BIND
(act:commonLabelURI("http://developer.runkeeper.com/healthgraph#Spinning") AS
?res) .}
where 'act:commonLabelURI' is the spin rule.
I 'have' tried using TBL and will address that issue in the next posting.
Jack
On Thursday, February 26, 2015 at 6:04:15 PM UTC-8, Holger Knublauch
wrote:
Hi Jack,
short answer: You'll need the SPIN API [1] as a plugin to Fuseki.
Fuseki by itself does not know what to do with the RDF
declarations of SPIN functions - they are just triples for Fuseki.
BTW afn:localname is not just a TopBraid function, but is
originally from Jena. So it works in Fuseki, but anything from the
spif: namespace would not work.
A commercial alternative to Fuseki is the TopBraid Live platform
[2], and this has SPIN and TopBraid SPARQL functions built in.
HTH
Holger
[1] http://topbraid.org/spin/api/
[2] http://www.topquadrant.com/products/topbraid-live/
<http://www.topquadrant.com/products/topbraid-live/>
On 2/27/2015 11:00, Jack Hodges wrote:
I have exported a bunch of graphs to a .ttl file and then
imported it into fuseki. If I run a query on fuseki to see if the
functions are there - they are. If I run a query on fuseki to
show the spin:body or spin:constraints they show them as
anonymous objects (is that the correct term?). If I run queries
on the classes and properties that my spin functions are working
on I get the right results. But I cannot get results by executing
my spin functions.
So the classes and properties exist, the bindings exist, the spin
functions exist, the prefixes are defined, but the functions
don't execute. Other functions execute, such as the TopBraid
functions (I tested with afn:localname for example) and they work
fine.
By the way, these functions have been tested in TBCME and work
fine. If I take the strings I am using in fuseki and run them in
the SPARQL window of TBCME they also work fine. I checked the
list of models that are being exported with mine and noted that
some are not exported, such as skos. Is this a problem?
I must be missing something simple here. Any comments?
Jack
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