rdflib.plugins.stores.sparqlstore.SPARQLStore remove returnFormat=XML

[wonkydonky]

The class SPARQLStore calls this init from the NSSPARQLWrapper superclass

super(SPARQLStore, self).__init__(endpoint, returnFormat=XML, **sparqlwrapper_kwargs)

the problem is that this doesn't allow any other return format other than XML (for example, JSON). The reason is:

• returnFormat=XML sets the default returnFormat upstream to XML
• the query() functions resets the query setup at every query, using self.resetQuery()

so, even if I call setReturnFormat() from the base class SPARQLWrapper, it has no effect. Results always return as XML. By removing returnFormat=XML, I should be allowed to call SPARQLStore like this

SPARQLStore (endpoint='...', returnFormat=JSON

[wonkydonky]

Looks like there is more going on than that. The problem remains though, it's impossible to request any other format than XML.

[gromgull]

closing this as we've removed SPARQLWrapper in RDFLib 5.0, see: #744