Hi, On Mon, Feb 22, 2016 at 3:54 AM, Rob Atkinson <[email protected]> wrote:
> I am looking at linked data applications to add value to data exposed via > Web Services, to add the missing semantics about the exposed content needed > to actually discover and use those services. > i need to be able to traverse graphs composed of things like VoiD, > RDF-Datacube etc. > The RDF-shapes scope covers this, and there are some elements of Marmotta > such > as LDPath that are relevant. I've previously built the functionality I > needed using the LinkedDataAPI (https://github.com/UKGovLD/linked-data-api > ). > > Is there anything in Marmotta to support parameterised SPARQL queries > accessed via URL based APIs, and building a response by traversing paths > from the query results? > No AFAIK, and that would be a really valuable addition to the marmotta-sparql module. While I also see a dedicate LDA module, I understood that just that could be a good focus to start. The main hurdle I see is that Marmotta is keen to bind to a single > repository - whereas I specifically want to combine data from triple-stores > and existing RDBMS environments. Decoupling APIs against separate SPARQL > endpoints works fine for this. IMHO If the Marmotta build configured APIs > by default against its configured SPARQL endpoint, but an API configuration > module allowed additional APIs to be configured against alternative SPARQL > endpoints then all would be bliss. > Well, the architectural choice in Marmotta was to build a Linked Data server on top of a single (but pluggable) triple store. I still think that if want to implement an kind of federation it should be done in the backend layer, not in the application itself. But we're happy to discuss options. To start, register all this stuff as issues in Jira. I'd recommend you to start getting familiar with our code base and apis. So probably adding support to marmotta-sparql parameterised SPARQL queries via URLs could be a good entry point. What do you think, Rob? Thanks for sharing with us all your ideas. Cheers. -- Sergio Fernández Partner Technology Manager Redlink GmbH m: +43 6602747925 e: [email protected] w: http://redlink.co
