Dear Mr Berezovskyi Thank you for your prompt and thorough reply. I'm sorry I did not research rdfpatch tool enough and yes, I'm aware of a skolemizer library.
Unfortunately, I'm nothing like a programmer so CLI is the only way for me. That is why also I would much like to use rdfpatch tool for the Skolemisation task. >From what I understand, blabel [1] looks like my last resort for now. 8 июля 2023, 19:44:56, от "Andrii Berezovskyi" <[email protected]>: > Hello Larysa, > > I don’t think the rdfpatch tool is good fit for this, it’s designed for a > different purpose. The tool itself expects to receive a patch file (which is > not a regular RDF file), at which point the skolemization should already be > done: > > $ rdfpatch turtletest.ttl > org.apache.jena.rdfpatch.PatchException: [line: 1, col: 1 ] Expected keyword > at start of patch record > > And testing it on the example from the docs ( > https://jena.apache.org/documentation/rdf-patch/ ): > > $ rdfpatch sample.patch > TX . > PA "rdf" "http://www.w3.org/1999/02/22-rdf-syntax-ns#"; . > PA "owl" "http://www.w3.org/2002/07/owl#"; . > PA "rdfs" "http://www.w3.org/2000/01/rdf-schema#"; . > A <http://example/SubClass> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> > <http://www.w3.org/2002/07/owl#Class> . > A <http://example/SubClass> <http://www.w3.org/2000/01/rdf-schema#subClassOf> > <http://example/SUPER_CLASS> . > A <http://example/SubClass> <http://www.w3.org/2000/01/rdf-schema#label> > "SubClass" . > TC . > # Data: Adds=3 Deletes=0 > # Prefixes: Adds=3 Deletes=0 > # Txn: TX=1, TC=1, TA= > > > There is also an attempt to provide an algorithm for stable skolemization > (among other things) such as to allow meaningful hashing: > https://github.com/iherman/canonical_rdf. But that code does not truly > skolemize bnodes, i.e. it does not convert them into IRIs. > > I would suggest you look instead at https://pypi.org/project/skolemizer/, for > example. Though it produces skolem URIs with the `/.well-known/skolem/` path > prefix instead of `/.well-known/genid/` prefix recommended by > https://www.w3.org/TR/rdf11-concepts/#section-skolemization. > > If you really want use Jena, you could try using this snippet: > https://github.com/EricssonResearch/scott-eu/blob/master/lyo-services/lib-common/src/main/kotlin/eu/scott/warehouse/lib/RdfHelpers.kt#L82-L91 > though it should be improved. For example, the '/.well-known/genid/‘ path > prefix should be used (but I learned that long after I wrote that code). The > code instead uses URNs in a namespace that was not allocated for that. > > –Andrii. > > On 8 Jul 2023, at 11:36, Larysa Zhuchyi <[email protected]> wrote: > > I would be grateful if you could tell me whether it is possible to use > rdfpatch.bat CLI to skolemnize RDF dataset. > > > > -- Sincerely, Larysa Zhuchyi
