That's a good question that I asked myself when I started EulerGUI.
And I couldn't also find a right answer.
Then the project, geared towards GUI and rules, proceeded, and I
forgot the question. We used Jena for parsing RDF/XML, OWL-API for
OWL/XML.
And for N3 including quoted graphs and rules, we built a parser.
Then , along the way , we built an API able to parse any RDF dialect (
Turtle/N3, RDF/XML, OWL/XML, and more ) .
Here is a sample:
SourceFactory factory = new SourceFactory();
N3Source n3 = factory.addSource(new URL(
"https://eulergui.svn.sourceforge.net/svnroot/eulergui/trunk/eulergui/examples/parents.n3";),
null);
ParserLink pl = new ParserLink();
pl.parse( n3 );
ListStorageTripleHandler handler = new
ListStorageTripleHandler();
pl.visitAllURI( handler );
System.out.println( handler.getTriples() );
List<ITriple> triples = handler.getTriples();
System.out.println( triples );
To do this , these 3 jar are needed :
eulergui-1.9-SNAPSHOT.jar 1031194
/home/jmv/.m2/repository/parser4j/all/trunk3/all-trunk3.jar 383791
log4j-1.2.16.jar 481535
which amounts to this total :
1031194 + 383791 + 481535
1,896,520 bytes
2011/9/12 Norman Gray <[email protected]>:
>
> Greetings.
>
> Can anyone point me towards a simple/lightweight Java RDF library?
>
> Here, I mean 'lightweight' in the sense of having a small API, rather than a
> small jar, because if one is trying to persuade people that RDF is a useful
> and practical thing, then hauling out a manual which could crush a small
> donkey is a difficult place to start. I want an RDF gateway drug^Wlibrary.
>
> All I really want to be able to (demonstrate I can) do is to read and write
> RDF/XML and Turtle, create triples, and iterate through a graph. Simple
> inference I wouldn't say no to, but wouldn't need; and SPARQL would be
> unnecessary for the scope and userbase I have in mind.
>
> Ideally, I'd like to be able to say "here is a little jar to put on your
> classpath, and here is a webpage with a few examples which make simple things
> simple; have fun".
>
> Jena I've used a lot, and like, but ... well, see remarks about maltreated
> donkeys above. Sesame I've used less, but it's still a
> four-types-of-batteries included solution.
>
> JRDF <http://jrdf.sourceforge.net/> is I think intended to be small, but
> looking at its documentation, it seems to have become fuller-featured over
> time. Also, it's marked as 'inactive', which is nudging one away from using
> it for new projects.
>
> rdf2go looks attractive, and seems to be aimed in part at the same
> semweb-sceptical userbase. But as an abstraction layer over other triple
> stores, it fails my 'one jar' goal.
>
> I imagine it would be possible to try to extract some some sort of bare-bones
> Jena subset, but I can't help thinking that would be quite a lot of work (I
> haven't looked at the feasibility in any detail).
>
> Yes, disk space is cheap, and yes, I can' just write a "primer for sceptics"
> set of examples, but if there's a bare-bones librarylet knocking around, that
> I haven't found, then I'd like to use it, and I imagine the LOD list would
> know of it.
>
> Thanks for any pointers.
>
> All the best,
>
> Norman
>
>
> --
> Norman Gray : http://nxg.me.uk
> SUPA School of Physics and Astronomy, University of Glasgow, UK
>
>
>
--
Jean-Marc Vanel
Déductions SARL - Consulting, services, training,
Rule-based programming, Semantic Web
http://jmvanel.free.fr/ - EulerGUI, a turntable GUI for Semantic Web +
rules, XML, UML, eCore, Java bytecode
+33 (0)6 89 16 29 52
chat : irc://irc.freenode.net#eulergui
