On 03.04.20 09:35, Martynas Jusevičius wrote: > Lorenz, > > I think what I did is > > [] rdf:type rs:ResultSet ; > rs:boolean "true"^^xsd:boolean . right, I'm dumb ... sorry, should read more carefully, then think, then reply :D > > which is what this ASK test result shows: > https://www.w3.org/2001/sw/DataAccess/tests/data/extracted-examples/true.ttl > > > I realise I had basically the same question already a few years ago: > https://mail-archives.apache.org/mod_mbox/jena-users/201803.mbox/%3cCAE35Vmyd=a4goxbkufmxij-jdesp1wbz6zde26zey1mu15q...@mail.gmail.com%3e > Not having ResultSet for ASK results breaks the media type/class > mapping, which our JAX-RS code relies on. > > Andy's suggestion was to use ResultsReader: > https://jena.apache.org/documentation/javadoc/arq/org/apache/jena/riot/resultset/rw/ResultsReader.html Well, that is correct. It's called **Results**Reader not **ResultSet**Reader. But, as you can see, you'd have to call |readAny() and the return type is a SPARQLResult. At least that's how I understand the docs.||| > > But since you write "ResultSet is exclusively for SELECT result > format", I don't suppose it helps to create an ASK result either?
Well, at least what I stated is also mentioned in the Javadoc of SPARQLResult [1]: > The class "ResultSet" is reserved for the SELECT result format. This > class can hold a ResultSet, a boolean or a Model. [1] https://jena.apache.org/documentation/javadoc/arq/org/apache/jena/sparql/resultset/SPARQLResult.html > > On Fri, Apr 3, 2020 at 8:42 AM Lorenz Buehmann > <[email protected]> wrote: >> ResultSet is exclusively for SELECT result format. If I'm not mistaken, >> anything beyond is wrapped in SPARQLResult class [1], so you can simply do >> >> SPARQLResult res = new SPARQLResult(true) >> >> and you're done. >> >> >> Also, what you did is basically >> >> [] rdf:type true >> >> sounds a bit odd, right? >> >> >> [1] >> https://jena.apache.org/documentation/javadoc/arq/org/apache/jena/sparql/resultset/SPARQLResult.html >> >> On 02.04.20 23:32, Martynas Jusevičius wrote: >>> Hi, >>> >>> I'm trying to create a ResultSet from a boolean using >>> ResultSetGraphVocab (as I haven't found a simpler way): >>> >>> Model m = ModelFactory.createDefaultModel(); >>> m.createResource(). >>> addProperty(RDF.type, ResultSetGraphVocab.ResultSet). >>> addLiteral(ResultSetGraphVocab.p_boolean, true); >>> >>> ResultSetFormatter.asXMLString(ResultSetFactory.makeResults(m)); >>> >>> What I get is: >>> >>> <?xml version="1.0"?> >>> <sparql xmlns="http://www.w3.org/2005/sparql-results#";> >>> <head> >>> </head> >>> <results> >>> </results> >>> </sparql> >>> >>> What I expect to get is: >>> >>> <?xml version="1.0"?> >>> <sparql xmlns="http://www.w3.org/2005/sparql-results#";> >>> <head></head> >>> <boolean>true</boolean> >>> </sparql> >>> >>> as per >>> >>> https://www.w3.org/TR/2013/REC-sparql11-query-20130321/#ask >>> and >>> https://www.w3.org/2001/sw/DataAccess/tests/#spec-10-5 >>> >>> Is there an error or is this a bug? >>> >>> >>> Martynas
