I want use the /sparql endpoint for READ-ONLY and the /sparql-auth endpoint for
writing UPDATEs (DROP, INSERT, etc.). I am using NAMED GRAPHs. I am using
Python with rdflib, and rdflib_sparqlstore instead of iODBC (which has a bug on
OSX 10.8).
Part I:
I can login to the /sparql-auth endpoint with a new account that has
SPARQL_UPDATE, SPARQL_SELECT, SPARQL_SPONGE roles and all rw privileges.
I can successfully run this query:
PREFIX vtkb: <http://www.epa.gov/ncct/vtkb#>
INSERT INTO vtkb:CSAngioSprout
{ vtkb:gene vtkb:perturbing_agent "bt" . }
WHERE {}
But it fails over HTTP when I use exactly the same query in my Python/RDFLIB
program that does use correct URL authentication.
rq = vtupdategraph.query(
'''PREFIX vtkb: <http://www.epa.gov/ncct/vtkb#>
INSERT INTO vtkb:CSAngioSprout
{ vtkb:gene vtkb:perturbing_agent "bt" . }
WHERE {}''')
I can successfully run other queries from my Python/RDFLIB program.
In the Virtuoso HTTP log I have:
127.0.0.1 Basic XXXXXX [26/Sep/2013:10:24:05 -0600] "GET
/sparql-auth?update=PREFIX+xml%3A+%3Chttp%3A%2F%2Fwww.w3.org%2FXML%2F1998%2Fnamespace%3E%0APREFIX+rdfs%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23%3E%0APREFIX+rdf%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%3E%0APREFIX+xsd%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F2001%2FXMLSchema%23%3E%0APREFIX+vtkb%3A+%3Chttp%3A%2F%2Fwww.epa.gov%2Fncct%2Fvtkb%23%3E+++++++++++%0A+++++++++++INSERT+INTO+vtkb%3ACSAngioSprout%0A+++++++++++++%7B+vtkb%3Agene+vtkb%3Aperturbing_agent+%22bt%22+.+%7D%0A+++++++++++%0A+++++++++++WHERE+%7B%7D
HTTP/1.1" 400 70 "" "sparqlwrapper 1.5.2
(http://sparql-wrapper.sourceforge.net/)"
On my program HTTP log I have:
send: 'GET
/sparql-auth?update=PREFIX+xml%3A+%3Chttp%3A%2F%2Fwww.w3.org%2FXML%2F1998%2Fnamespace%3E%0APREFIX+rdfs%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23%3E%0APREFIX+rdf%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%3E%0APREFIX+xsd%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F2001%2FXMLSchema%23%3E%0APREFIX+vtkb%3A+%3Chttp%3A%2F%2Fwww.epa.gov%2Fncct%2Fvtkb%23%3E+++++++++++%0A+++++++++++INSERT+INTO+vtkb%3ACSAngioSprout%0A+++++++++++++%7B+vtkb%3Agene+vtkb%3Aperturbing_agent+%22bt%22+.+%7D%0A+++++++++++%0A+++++++++++WHERE+%7B%7D
HTTP/1.1\r\nAccept-Encoding: identity\r\nAuthorization: Basic
XXXXXXXXXXXXXXXXXXXXXXX\r\nHost: localhost:8890\r\nConnection: close\r\nAccept:
application/sparql-results+xml\r\nUser-Agent: sparqlwrapper 1.5.2
(http://sparql-wrapper.sourceforge.net/)\r\n\r\n'
reply: 'HTTP/1.1 400 Bad Request\r\n'
And the RDFLIB basic error is:
SPARQLWrapper.SPARQLExceptions.QueryBadFormed: QueryBadFormed: a bad request
has been sent to the endpoint, probably the sparql query is bad formed.
Why is the HTTP query format not being accepted?
Thanks
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