SPIN now has an Apache 2.0 licence ! ! ! !
On Fri, Aug 2, 2013 at 11:57 AM, Martynas Jusevičius <[email protected]>wrote: > Also consider SPIN from TopQuadrant. SPIN can represent SPARQL as RDF. > There is a vocabulary and API: > http://spinrdf.org/spin.html > http://topbraid.org/spin/api/ > > Martynas > graphityhq.com > > On Fri, Aug 2, 2013 at 10:55 AM, Amin beyranvand <[email protected]> > wrote: > > > > > > Hi > > > > I want to write an engine for processing SPARQL queries. i want to use > jena to parse SPARQL queries and convert them to a internal form for my > application. i can parse queries and convert them to query algebra using > this code: > > > > Query q=QueryFactory.create("select ?s ?o where {?s ?p ?o }"); > > Op op = Algebra.compile(q) ; > > > > but i don't know how to use op and what is the uses of > op.visit(opVisitor) . > > > > in more detail: i want to convert query to a left deep tree and then > process query operators in a pipelined manner. >
