An XML Literal is a Typed Literal and typed literals can't also have a language tag
So as far as Jena (or any RDF framework for that matter is concerned) your XML Literals do not have any language tag so you can't match on them Rob On 20/05/2014 11:29, "Bardo Nelgen" <[email protected]> wrote: > >Hi all, > >it shall be really kind if someone might have a look into my following >matching issue: > >I am trying to filter out a language-specific XMLLiteral using SPARQL, >cannot get the literals language property matched by the filter – and >don't have a clue why so. > >Any suggestions welcome !! > >This is the RDF. > ><rdf:RDF xmlns:rdf= "http://www.w3.org/1999/02/22-rdf-syntax-ns#"; > > xmlns:rdfs= "http://www.w3.org/2000/01/rdf-schema#"; > > xmlns:xsd= "http://www.w3.org/2001/XMLSchema#"; > > xmlns:xliff= "urn:oasis:names:tc:xliff:document:1.2" > > xmlns:timed= "http://namespaces.semaworx.org/timed#"; > > > > ><rdf:Description rdf:about= >"http://resources.semaworx.eu/timed/elements/contentincrediblyuniqueid003"; >> > ><rdf:type rdf:resource= >"http://namespaces.semaworx.org/timed#versionedPayload"; /> > ><xliff:target rdf:parseType="Literal" xml:lang="de-de"><i18n21:message >key="cityAPI_teaser_subhead">Airlines, Kneipen, U-Bahn, Coffee Shops, >Beauty-Stores, Heimdekor-Läden, > >Sportveranstaltungen…</i18n21:message></xliff:target> > ></rdf:Description> > > >And this the SPARQL trying to match the literal as a whole: > >PREFIX rdf:<http://www.w3.org/1999/02/22-rdf-syntax-ns#> >PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#> >PREFIX xsd:<http://www.w3.org/2001/XMLSchema#> >PREFIX timed:<http://namespaces.semaworx.org/timed#> >PREFIX xliff:<urn:oasis:names:tc:xliff:document:1.2> > >CONSTRUCT{ > >?versionPayload rdf:type timed:versionedPayload . > >?versionPayload xliff:target ?nationalString . > >} > >WHERE{ > >?versionPayload rdf:type timed:versionedPayload . > >?versionPayload xliff:target ?nationalString . > >FILTER ( isLiteral(?nationalString) && langMatches( >lang(?nationalString), "de-de" ) ) > >} > > >The query as above delivers no result at all. > >Despite that, besides the language-matching, the rest of the query >appers to work properly: > >As soon as I remove the language filter, I get a proper result; though >including matching XMLLiterals for *all* available languages – which of >course is not intended. > > >What am I missing !?? > >– Bardo >
