Hi everyone, This question is related to virt-jena, but it is my understanding that it is also developed by Virtuoso, hence directing the question to you guys.
I also posted the question on stackoverflow: http://stackoverflow.com/questions/22229302/property-functions-in-virtuoso I am planning to have Jena as the interface and Virtuoso as the backend storage, since Jena seems to be easier to extend and Virtuoso have some nice features such as conversion of relational data into RDF. My problem is that the property functions that are in Jena, and the ones that I want to implement, does not seem to have any effect when virtuoso is used as the underlying storage. Example of query working when using TDB (TDBFactory.createDataset) to make a dataset but not working when using Virtuoso (VirtGraph, VirtDataset, and also tried QueryExecutionFactory.sparqlService): PREFIX apf: <java:com.hp.hpl.jena.sparql.pfunction.library.> SELECT * WHERE { ?s apf:str "Test" } LIMIT 5 I am looking for a way to make Jena/ARQ pre- or post process the results of a query sent to Virtuoso. If that is not possible, please point in alternative directions. Implementing property function in Virtuoso or use Sesame or other easily extendable system instead are my own initial thoughts. -- Med venlig hilsen / Best Regards Alex Bondo Andersen ------------------------------------------------------------------------------ Subversion Kills Productivity. Get off Subversion & Make the Move to Perforce. With Perforce, you get hassle-free workflows. Merge that actually works. Faster operations. Version large binaries. Built-in WAN optimization and the freedom to use Git, Perforce or both. Make the move to Perforce. http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk _______________________________________________ Virtuoso-users mailing list Virtuoso-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/virtuoso-users
