W3C home > Mailing lists > Public > public-xg-webid@w3.org > January 2012

remoting to the sparql server, and running an OWL test

From: Peter Williams <home_pw@msn.com>
Date: Mon, 2 Jan 2012 14:42:32 -0800
Message-ID: <SNT143-W32FE9F40DAFD1E2D56274C92910@phx.gbl>
To: <kidehen@openlinksw.com>, "public-xg-webid@w3.org" <public-xg-webid@w3.org>

Ive updated my little dotNet demo (the one that is a socketlister with an SSL protocol handler From "mentalis", and webid validation agent in the onCertReceive event). Given a webid from a cert provisioned by ODS, it will now have uriburner's sparql endpoint perform the ASK, for a reference indicated in the FROM clause. Going beyond that ASK, to seek higher assurance, is now the goal. The ask query seems off quite limited value (now it works). but, Henry is right to force JUST THAT to work, tpo help bootstrap.



Noting how others' validators work (or block), I now check the DNS authority of the webid URI (to see it if resolves in 500 ms or less), and then similarly the resource (which must return 200, and no redirects, in 1000ms or less). If these liveness checks work (building a dependency on the DNS, and the web as a source of endopoints), it then concocts a URI inviting a translation service to always stream out the XML form of triples. THe service would be local (in a true deployement), and there are no timeouts. Its can block the entire thread (and may be even the entire listener, on this little demo.)


This concocted URI goes into the FROM clause of the sparql query, along with some uriburner flags that induce the sparql server not to consume its own triple store tied to a SQL source (which seems how sparql sservers clasically worked), but to go out and learn a triple store, on the fly, by parsing the targeted document (as translated). 


Thankyou for all the help. Ive wanted to do that for years. I never understood why my own sparql server (from Josh tauber) could not or would not handle real time feeds pulled the uri in FROM clauses, which seemed the "heart of the semantic web".




With that, I should be able to invoke the owl engine, remotely -  since two of my cards now contain owl:sameAs references to each other 




Perhaps help me define the output, that defines success. ANy success, is fine. Its just a unit test, so I know what broke.


>From Azure to Blogspot: http://rdf-translator.appspot.com/parse?url=http://rapstr1.blob.core.windows.net/ods/user.ttl&if=n3&of=n3&html=1 


>From BlogSpot to Azure: http://rdf-translator.appspot.com/parse?url=http://yorkporc2.blogspot.com/&of=n3&html=1 


Assuming those are profiles are correct, what uriburner query (a select query, presumably, stored in a permalink) could simply enumerate the identical references?


my own effort was limited to this:


DEFINE input:same-as "yes"
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX : <http://www.w3.org/ns/auth/cert#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

SELECT * FROM <http://rdf-translator.appspot.com/parse?url=https%3A%2F%2Frapstr1.blob.core.windows.net%2Fods%2Fuser.ttl&if=n3&of=xml> WHERE {
?s owl:sameAs <data:application/x-x509-user-cert;base64,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 RW5yb2xsL2NhLmNybDANBgkqhkiG9w0BAQUFAAOBgQBHa5SD8Q9jtPKP5R6jUijPAY3BSsMkt7bGkNW+iZklehEBsl+zV7MGMPOsWDknUA3QI6ayoDCD1Wbw2/ibVYfZgZskrJnFNSLzsy5s/OSjmN2CaKhIlTMWVAZc3UMK6m1hkCACWEbucU5Fp+tbjaJiE34mDNVWaYyh+6Rk+dICpw==> .


I was aiming for in http://docs.openlinksw.com/virtuoso/rdfsparqlrule.html



I found http://events.linkeddata.org/ldow2010/papers/ldow2010_paper09.pdf useful for context (though ignore the usual stuff before 4.0).




"There is already a notion of context built into RDF, namely
named graphs [5]. Even though it is not part of the official
standard (albeit, snuck into RDF through SPARQL and im-
plemented in almost every tool-set), it is clear that part of
the problem with owl:sameAs usage on the Semantic Web is
that sameAs should not always be a statement between two
URIs in a unqualified manner, but may be qualified as hold-
ing only within a certain named graph."


This is what I was trying to get at by saing, FOR THIS CONTEXT, I want the equivalencies to only hold ONLY in the context of an SSL Handshake, which delivering a mini named graph (the collection of URIs in the  SAN field). TO esetablish the context, I put the data URI into the owl:sameAs range, too. 		 	   		  
Received on Monday, 2 January 2012 22:43:00 UTC

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