On 1/20/11 10:13 AM, Lars Marius Garshol wrote:
I'm trying to use the SPARQL Update functionality in Virtuoso, but struggling
to figure out what the endpoint is. I've tried
http://localhost:8890/sparql/
but that doesn't seem to accept SPARQL Update.
I found a hint in the manual that says:
If SPARQL_UPDATE role is granted to SPARQL user, then data manipulation
statements may be executed via the SPARQL Web service endpoint; if
SPARQL_UPDATE role is not granted, users are limited to data querying
statements.
Correct.
You have to explicitly enable this functionality for security reasons.
For SPARUL you need to grant "SPARQL_UPDATE" privileges to user "SPARQL" .
Kingsley
I guess that might be the reason.
Here's the actual exchange on the wire:
update=INSERT+DATA+{+GRAPH+<http://example.com/G>+{+<http://example.com/s>+<http://example.com/p>+"o"+}+}
send: 'POST /sparql/ HTTP/1.1\r\nHost: localhost:8890\r\nAccept-Encoding:
identity\r\nContent-Length: 105\r\nContent-Type:
application/x-www-form-urlencoded\r\n\r\n'
send:
'update=INSERT+DATA+{+GRAPH+<http://example.com/G>+{+<http://example.com/s>+<http://example.com/p>+"o"+}+}'
reply: 'HTTP/1.1 400 Bad Request\r\n'
header: Server: Virtuoso/06.02.3128 (Mac OS X) universal-apple-macosx10.5-32
VDB
header: Connection: Keep-Alive
header: Date: Thu, 20 Jan 2011 14:52:40 GMT
header: Accept-Ranges: bytes
header: Content-Type: text/plain
header: Content-Length: 61
400
Bad Request
22023 Error The request does not contain text of SPARQL query
I guess this is what explains how to set the role:
http://docs.openlinksw.com/virtuoso/rdfgraphsecurity.html
However, I don't know what user my SPARQL Update statement is running as. And I
can't see any way to check what users are configured in the system.
Help, please? (This is Virtuoso as installed. I haven't done anything at all to
change any configuration options.)
--Lars M.
http://www.garshol.priv.no/tmphoto/
http://www.garshol.priv.no/blog/
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Regards,
Kingsley Idehen
President& CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
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