On Wed, Jun 8, 2022 at 12:22 PM Andy Seaborne <a...@apache.org> wrote: > > > > On 08/06/2022 09:22, Martynas Jusevičius wrote: > > On Tue, Jun 7, 2022 at 9:15 PM Andy Seaborne <a...@apache.org> wrote: > >> > >> On 07/06/2022 10:47, Martynas Jusevičius wrote: > >>> Hi, > >>> > >>> I have implemented PATCH method for the Graph Store Protocol: > >>> https://www.w3.org/TR/sparql11-http-rdf-update/#http-patch > >>> > >>> The PATCH is applied to a named graph. I am missing this bit however: > >>> " If a SPARQL 1.1 Update request is used as the RDF payload for a > >>> PATCH request that makes changes to more than one graph or the graph > >>> it modifies is not the one indicated, it would be prudent for the > >>> server to respond with a 422 Unprocessable Entity status." > >> > >> I read that in the context of GSP resource naming. > >> > >> ?graph=<uri> > >> > >> and so the update does not name a graph - it'll look like the default > >> graph in the update. > >> > >> So look for GRAPH in the update. > > > > Thanks, that makes sense. GRAPH is also easy to check. > > > > But then I need to forward the update to a triplestore that does not > > support PATCH. > > It's the GSP naming that matters. > > > Which means I would need to wrap INSERT/DELETE/WHERE templates into > > GRAPH <uri> { }. > > WITH <iri> DELETE {} INSERT {} WHERE {} > > Also: USING. And protocol.
Thanks, forgot about those. I could definitely use WITH. And re. SPARQL protocol, would ?using-named-graph-uri=uri have the same effect as WITH <uri> in this case? > > > Is there some builder code that can help with that? > > Have you looked at UpdateBuilder? > I looked at the Javadoc, it seems quite complicated. I'll see if I can avoid modifying the update string. > > > >> > >>> What would be the way to make sure that an update only affects a > >>> single specific graph? > >> > >> A dataset of one graph and no others. c.f. DatasetGraphOne but for a > >> single named graph and read-only dft graph. > >> > >> Or a dataset which yields read-only graphs except for the target graph. > >> > >> Or analyse the update - no GRAPH in templates if the target comes from > >> the URL. > >> > >>> > >>> > >>> Martynas > >>> atomgraph.com
