Query objects are not supported as input to the query method

[lukasmu]

The query method of the OxigraphStore does not accept rdflib Query objects but only strings and otherwise fails with a TypeError.

Example:

import rdflib
from rdflib.plugins.sparql import prepareQuery
from rdflib.namespace import DCTERMS

graph = rdflib.Graph(store='Oxigraph')
graph.add((rdflib.URIRef('http://localhost/example'), DCTERMS.title, rdflib.Literal('An arbitrary example')))

query_string = f'SELECT ?title WHERE {{?obj <{DCTERMS.title}> ?title}}'
query_object = prepareQuery(query_string)

# This works:
result = graph.query(query_string)
print(list(result)[0][0])

# This does not work:
result = graph.query(query_object)
print(list(result)[0][0])

Maybe the line https://github.com/oxigraph/oxrdflib/blob/b8008f26209e363a79a4a386bf065564f3a181bc/oxrdflib/init.py#L110 should rather read if isinstance(query, Query) or kwargs for the time being?

In the long term, it would be great if prepared Query objects could be supported. Maybe this could result in even further speed ups? Probably this is related to https://github.com/oxigraph/oxrdflib/issues/11 as well.

Thanks a lot for your efforts!