Martynas, that is a bit off-topic but maybe you could organize a webinar so you can show us some features of graphityhq.
Nicolas: honestly, i know not very much about PA4RDF, I use Elmo (rebranded as AliBaba) : http://sourceforge.net/projects/sesame/files/AliBabaElmo/1.5/openrdf-elmo-1.5.zip/download There is a nice user guide in the zip file, that gives a lot of details about how to annotate beans so the persistence is transparent. I think inheritance is explained too. On Tue, Jan 6, 2015 at 2:29 AM, Martynas Jusevičius <[email protected]> wrote: > Nicolas, > > I suggest you also take a look at Graphity Client: > https://github.com/Graphity/graphity-client > > You don't really need an object layer representing your RDF classes > above Jena, it is a bottleneck. You can express both the webapp > structure and the instance data as RDF, and define a mapping from HTTP > access to RDF state changes over SPARQL. > > Here's an example of how that structure (sitemap ontology) looks like: > http://lists.w3.org/Archives/Public/public-declarative-apps/2015Jan/0000.html > > Here's an example of an editing interface: > http://linkeddatahub.com/bibframe/instances?mode=http%3A%2F%2Fgraphity.org%2Fgc%23CreateMode > > Disclaimer: I'm the main developer. > > > Martynas > graphityhq.com > > On Mon, Jan 5, 2015 at 9:07 PM, Nicolas Paris <[email protected]> wrote: >> Thanks for answers ! >> >> - About http://callimachusproject.org/ : interesting but I have to >> create application from scratch, because very specific >> >> - About PA4RDF : It seems very interessant. Any other tutorial, >> related post or tip ? >> Olivier, what do you exactly mean by "a bean <-> graph mapper" ? >> I generate an OWL ontology, that is my structure of data. I will >> modelise beans inspiring this structure. Say owl properties will be >> java class properties. And RDF class's inheritance will be mapped to >> java inheritance. Do you agree ? >> However, it appears that the POJO class of PA4RDF limits the inheritance. >> The example here >> http://pa4rdf.sourceforge.net/examples/concreteClassSubject.html >> could feet with user <- student inheritance ? Or will I have to >> duplicate code for Teacher & Student as they inherite from User ? >> >> Thanks again for this link Olivier ! >> Nicolas PARIS >> >> >> 2015-01-05 15:44 GMT+01:00 Olivier Rossel <[email protected]>: >>> There was a discussion some weeks ago about PA4RDF. >>> It might be a good starting point, in you think a bean <-> graph mapper >>> could be useful in your case. >>> >>> Also http://callimachusproject.org/ could be another interesting >>> project to investigate in your case. >>> >>> On Mon, Jan 5, 2015 at 2:41 PM, Nicolas Paris <[email protected]> wrote: >>>> Hello, >>>> >>>> I am creating a web semantic application, were persistant data is all >>>> stored in triple store (TDB). >>>> I mean, users(foaf), parameters etc. >>>> This application is an e-learning application, with exercices >>>> proposition based on reasonners. >>>> >>>> I want to use a classic MVC design pattern (jsp / servlets / javabeans). >>>> So a javabeans user, teacher, and student with heritage. >>>> My naïve aproach would be to initialise jbeans from TDB, using jena >>>> model getInstance etc. Or Sparql Querys with ARQ >>>> and my setters will do both : >>>> - set jbeans propertys >>>> - modify triple (dataset jena setProperty ; dataset commit , OR SPARQL >>>> querys) >>>> >>>> Example bad pseudo-code: >>>> Class student extends user { >>>> private Integer age; >>>> private Ressource student = myModel.getIndividual( >>>> "http://www.myexample.com/mySchema#student1"; ); >>>> >>>> public void setAge(Integer age){ >>>> this.age = age; //modify jbeans property >>>> student.setPropertyValue("http://www.myexample.com/mySchema#age","1^^integer";) >>>> # modify TDB valyue >>>> } >>>> >>>> } >>>> >>>> >>>> 1) Are there good practice or some DAO to design ? >>>> 2) In term of performances, is it better to use ARQ (sparql) OR jena >>>> ontologie API ? >>>> (3) is it a good choice to store all in a triple store ? (versus >>>> traditional relational databases) ) >>>> >>>> Thanks a lot >>>> >>>> >>>> >>>> Nicolas PARIS
