Providing the union-default-graph query parameter

[JoelBender]

According to the 0.2.4 change log there is a way to provide the union-default-graph query parameter, is there a SPARQL sample that shows this being provided? I'm using RDFLib with the SPARQLUpdateStore API and I would like to query it like an RDFLib ConjunctiveGraph, a union of all of the named graphs.

[Tpt]

I don't think there is an example with rdflib out there yet. Here it is:

from rdflib.plugins.stores.sparqlstore import SPARQLUpdateStore

store = SPARQLUpdateStore(params={'union-default-graph': '', 'using-union-graph': ''}) # using-union-graph is only if you want the union graph for the WHERE part of INSERT/DELETE WHERE updates
store.open(("http://localhost:7878/query", "http://localhost:7878/update"))
store.update("PREFIX ex: <http://example.com/> INSERT DATA { GRAPH ex:g { ex:s ex:p ex:o }}")
print(list(store.query("SELECT * WHERE { ?s ?p ?o }")))

[JoelBender]

Excellent, thank you.