Never mind. I missed:
QuadAcc deletes = upd.getDeleteAcc();
deletes.addTriple(/* triple pattern to delete */);
Regards,
--Paul
On Thu, 2019-12-05 at 09:12 -0600, Paul Tyson wrote:
> I'm trying to construct a SPARQL update like:
>
> DELETE {?r ?p ?o. ?s ?p1 ?r.}
> WHERE {?r ex:foo "123"; ex:bar "456"; ?p ?o.
> OPTIONAL {?s ?p1 ?r}
> }
>
> In other words, delete all triples with subject or object resource that
> has certain ex:foo and ex:bar values.
>
> I can't see how to set or modify the DELETE pattern in an UpdateModify
> (or UpdateDeleteInsert) object. I'm guessing a visitor must be used,
> but I can't put the pieces together. Can someone point out the right
> pattern?
>
> UpdateModify upd = new UpdateModify();
> upd.setHasDeleteClause(true);
> upd.setHasInsertClause(false);
> upd.setElement(/* set the where block */);
> upd.visit(new UpdateVisitorBase() {
> @Override
> public void visit(UpdateModify um) {
> /* somehow add the DELETE triples??? */
> }
> });
>
> I intend to use the built-up request in an UpdateRequest to be
> submitted by an RDFConnection, like:
>
> UpdateRequest req = UpdateFactory.create().add(upd);
> rdfConnection.update(req);
>
> I'm using jena libs 3.13.1.
>
> Thanks and regards,
> --Paul
>
>
