Holger, I've built a QueryBuilder class as part of Graphity: https://github.com/Graphity/graphity-browser/blob/master/src/main/java/org/graphity/util/QueryBuilder.java
I think it could be useful for many working with Jena and/or SPIN queries, but I lack expertise of SPIN API to make it robust. Here's where I use it: https://github.com/Graphity/graphity-browser/blob/master/src/main/java/org/graphity/browser/Resource.java Could you help me out with this? Martynas graphity.org On Wednesday, June 27, 2012 2:15:55 AM UTC+2, Holger Knublauch wrote: > > On 6/26/2012 20:26, Martynas wrote: > > Holger, > > I have a SPIN query for which I want to change the ORDER BY expression > -- say change the ?var name, or change ASC to DESC for example. > > I have implemented the following method: > > public QueryBuilder orderBy(Variable var, boolean desc) > { > spinQuery.removeAll(SP.orderBy); // does not have effect?? > > > If not, then are you perhaps in a MultiUnion graph where the triple is not > in the base graph? Also note that the removeAll won't delete any rdf:List > triples, so they may be left as orphans. > > Hard to say without the full source code. > > In general, have you thought about using the Jena Query model API instead > here, i.e. manipulate the Jena objects and then use ARQ2SPIN to replace the > bnodes of the select? > > Holger > > -- You received this message because you are subscribed to the Google Group "TopBraid Suite Users", the topics of which include Enterprise Vocabulary Network (EVN), TopBraid Composer, TopBraid Live, TopBraid Ensemble, SPARQLMotion, SPARQL Web Pages and SPIN. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/topbraid-users?hl=en
