Thanks. That is what I did finally...laying the data down as wanted from a ResultSet.
Rgds, On Thu, Sep 8, 2016 at 9:27 AM, Nikolaos Beredimas <bere...@gmail.com> wrote: > CSV is not a valid RDF serialization format as mentioned (only as a format > for SPARQL results). > > If you want something similar to CSV for serializing an RDF Model, try > using N-triples. > > On Thu, Sep 8, 2016 at 10:22 AM, Martynas Jusevičius < > marty...@graphity.org> > wrote: > > > I think CSV is for writing ResultSet (SELECT results), not Model > > (CONSTRUCT/DESCRIBE results). > > > > On Wed, 7 Sep 2016 at 23:37, lookman sanni <lookous...@gmail.com> wrote: > > > > > Hi all, > > > > > > I am trying in vain to write a Jena model to a text file using > > > RDFDataMgr.write(outputstream, dataset2, lang). > > > > > > This works well for Lang such as RDFXML, TRIG, TURTLE, NQUADS. However > > for > > > Lang.CSV, it is firing a RiotException of which I have no idea: > > > > > > > > > *Exception in thread "main" org.apache.jena.riot.RiotException: No > graph > > > writer for null* > > > * at > > > org.apache.jena.riot.RDFDataMgr.createGraphWriter$( > > RDFDataMgr.java:1199)* > > > * at org.apache.jena.riot.RDFDataMgr.write$(RDFDataMgr.java:1211)* > > > * at org.apache.jena.riot.RDFDataMgr.write(RDFDataMgr.java:1004)* > > > * at org.apache.jena.riot.RDFDataMgr.write(RDFDataMgr.java:995)* > > > * at org.apache.jena.riot.RDFDataMgr.write(RDFDataMgr.java:936)* > > > * at ....* > > > > > > Has anyone come across this in the past and has some hints on its > why/how > > > to solve it ? > > > > > > Thanks, Lookman > > > > > > -- > > > Best Regards > > > > > > Lookman SANNI > > > > > > -- Best Regards Lookman SANNI
