Irene, I am constructing a restful service chain between several restful services. The semantic web service is at one end. My code uses the Jena API (QueryExecutionFactory.sparqlService(endpoint, query and QueryExecution.execSelect) to query the semantic web service. The rest calls to both Fuseki and the local TBL instance execute fine. As you know, I had to abandon Fuseki due to this problem with the SPIN API. So I started working on the TBL version. The TBL query must look like this:
http://localhost:8083/tbl/sparql?query=[query] Since running the query in a browser works fine, the way that the endpoint and query are combined by the Jena library is probably the cause of my failure to get results from the query. I am currently setting the endpoint to: http://localhost:8083/tbl/sparql and the query to: [query], where this is replace by an actual query such as: select * where { ?a ?b ?c .} But this assumes that Jena is adding the "?query=" into the mix, and I am not sure whether I can add it into the endpoint definition. My endpoint/query combination is executing, as I said, but isn't returning the results I get from submitting at the browser. Does this help you understand what I am doing? I am confused about why you are confused. I have seen postings by Holger using these APIs programmatically (http://www.programcreek.com/java-api-examples/index.php?api=com.hp.hpl.jena.query.QueryExecution) and, as I mentioned, they were working fine with Fuseki as long as I didn't use SPIN. Jack On Friday, February 27, 2015 at 4:28:42 PM UTC-8, Irene Polikoff wrote: > > Jack, > > What are you trying to accomplish? Why do you need to make Jena calls to > TBL? This will not work. > > > > From: Jack Hodges <jhodg...@gmail.com <javascript:>> > Reply-To: <topbrai...@googlegroups.com <javascript:>> > Date: Friday, February 27, 2015 at 6:57 PM > To: <topbrai...@googlegroups.com <javascript:>> > Subject: Re: [topbraid-users] exporting spin functions to fuseki > > I just remembered where I saw the fuseki reference and thought it was > condoned by TQ. It is in the Learning SPARQL book. But that is unimportant. > I downloaded the Jena git archive and edited the jena-fuseki pom.xml file > and rebuilt the code. Holger said to use the 1.4.0 version of the SPIN > library, which depends on jena 2.11.0. So I got that version. But the build > failed. Since you all have been pushing TBL I returned to building out my > TBL adapter. Yes, in the browser my SPIN rules work against the TBL > instance I have running with TBCME, but I have not been so lucky, yet, > making Jena calls to the TBL instance from code. They don't fail but they > don't return results either. So for the time being I am dead in the water. > > On Friday, February 27, 2015 at 10:31:03 AM UTC-8, Irene Polikoff wrote: >> >> In the past TQ encouraged the use of fuseki ... >> >> >> This is news to me :) Must be a misunderstanding. >> >> SPIN API is for use by developers who want to include SPIN in their >> programs. Thus, it is likely to be not just about the build procedures. You >> would need to figure out how to modify fuseki so that it uses SPIN. >> >> Irene >> >> On Feb 27, 2015, at 12:14 PM, Jack Hodges <jhodg...@gmail.com> wrote: >> >> Thank you Holger. Perhaps I need the long answer. Is there one? I went to >> the Spin API link you provided. I am not sure how I am supposed to use this >> information. As a maven dependency do I need to rebuild fuseki from source? >> Or can I just take one of the jar files associated with these dependencies >> and put them into some directory (though I do not see which directory in >> the fuseki distribution). In the past TQ encouraged the use of fuseki ... >> >> 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/ >>> >>> 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 >>> -- >>> You received this message because you are subscribed to the Google Group >>> "TopBraid Suite Users", the topics of which include Enterprise Vocabulary >>> Network (EVN), Reference Data Manager (RDM), TopBraid Composer, TopBraid >>> Live, TopBraid Insight, SPARQLMotion, SPARQL Web Pages and SPIN. >>> To post to this group, send email to topbrai...@googlegroups.com >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "TopBraid Suite Users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to topbraid-user...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>> -- >> You received this message because you are subscribed to the Google Group >> "TopBraid Suite Users", the topics of which include Enterprise Vocabulary >> Network (EVN), Reference Data Manager (RDM), TopBraid Composer, TopBraid >> Live, TopBraid Insight, SPARQLMotion, SPARQL Web Pages and SPIN. >> To post to this group, send email to topbrai...@googlegroups.com >> --- >> You received this message because you are subscribed to the Google Groups >> "TopBraid Suite Users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to topbraid-user...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> >> -- > You received this message because you are subscribed to the Google Group > "TopBraid Suite Users", the topics of which include Enterprise Vocabulary > Network (EVN), Reference Data Manager (RDM), TopBraid Composer, TopBraid > Live, TopBraid Insight, SPARQLMotion, SPARQL Web Pages and SPIN. > To post to this group, send email to topbrai...@googlegroups.com > <javascript:> > --- > You received this message because you are subscribed to the Google Groups > "TopBraid Suite Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to topbraid-user...@googlegroups.com <javascript:>. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Group "TopBraid Suite Users", the topics of which include Enterprise Vocabulary Network (EVN), Reference Data Manager (RDM), TopBraid Composer, TopBraid Live, TopBraid Insight, SPARQLMotion, SPARQL Web Pages and SPIN. To post to this group, send email to topbraid-users@googlegroups.com --- You received this message because you are subscribed to the Google Groups "TopBraid Suite Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to topbraid-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
