I was too excited and that SPARQL I posted doesn't work correctly. It returns what appears to be a join, which is not what I want (I'm new to all of this):
(http://d.opencalais.com/er/company/ralg-tr1r/4ee13d20-b44f-3bce-98bc-49a303e72db5,Microsoft Corporation,MSFT,MSFT.OQ), (http://d.opencalais.com/er/company/ralg-tr1r/4ee13d20-b44f-3bce-98bc-49a303e72db5,Dell Inc.,DELL,DELL.OQ), (http://d.opencalais.com/er/company/ralg-tr1r/a9739942-cae7-38d0-940e-6d84aed47ae6,Microsoft Corporation,MSFT,MSFT.OQ), (http://d.opencalais.com/er/company/ralg-tr1r/a9739942-cae7-38d0-940e-6d84aed47ae6,Dell Inc.,DELL,DELL.OQ), (http://d.opencalais.com/er/company/ralg-tr1r/17de1dc9-0806-32e0-ba05-fbf5996c3ec0,Microsoft Corporation,MSFT,MSFT.OQ), (http://d.opencalais.com/er/company/ralg-tr1r/17de1dc9-0806-32e0-ba05-fbf5996c3ec0,Dell Inc.,DELL,DELL.OQ)) Anyway, once I get it working I'll repost it to this thread for posterity. On Thu, Dec 16, 2010 at 5:13 PM, Robert Campbell <[email protected]> wrote: > Hi Chris, > > That makes perfect sense and I really appreciate the detailed > response. I was able to change my SPARQL so that it successfully pulls > this rdf:about (subject) from the model, for example querying for > companies: > > PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> > PREFIX c: <http://s.opencalais.com/1/pred/> > SELECT ?about ?name ?ticker ?symbol WHERE { > ?about rdf:type <http://s.opencalais.com/1/type/er/Company> . > ?company c:name ?name . > ?company c:ticker ?ticker . > ?company c:symbol ?symbol > } > > Rob > > > On Thu, Dec 16, 2010 at 4:59 PM, Chris Dollin > <[email protected]> wrote: >> On Thursday, December 16, 2010 02:37:48 pm Robert Campbell wrote: >>> I'm parsing an XML/RDF model from OpenCalais which looks like this: >>> >>> ... >>> <rdf:Description c:contentType="text/raw" c:emVer="7.1.1103.5" >>> c:langIdVer="DefaultLangId" c:language="English" >>> c:processingVer="CalaisJob01" c:submissionDate="2009-12-10 >>> 06:34:26.635" >>> rdf:about="http://d.opencalais.com/dochash-1/dd3d9746-bbd3-3bd8-abdd-ee102300c824/meta";> >>> <rdf:type >>> rdf:resource="http://s.opencalais.com/1/type/sys/DocInfoMeta"/> >>> <c:docId >>> rdf:resource="http://d.opencalais.com/dochash-1/dd3d9746-bbd3-3bd8-abdd-ee102300c824"/> >>> >>> <c:submitterCode>c8b1bf20-11b5-9426-afb8-1af10ced91a7</c:submitterCode> >>> >>> <c:signature>digestalg-1|BA85RL4uWFjMjCfSa0k6iHqawts=|TTosv0VIPySK4HwUpxl76Yvh/ZwIjjCGwCRBAqjB+tDkZNcQUHmLUQ==</c:signature> >>> </rdf:Description> >>> ... >>> >>> and the Jena model looks like this: >>> >>> ... >>> http://d.opencalais.com/dochash-1/c2156224-66ed-3538-89f2-7c4b4b197809/meta >>> @c:submissionDate "2010-12-16 05:24:30.722"; >>> http://d.opencalais.com/dochash-1/c2156224-66ed-3538-89f2-7c4b4b197809/meta >>> @c:docId >>> http://d.opencalais.com/dochash-1/c2156224-66ed-3538-89f2-7c4b4b197809; >>> http://d.opencalais.com/dochash-1/c2156224-66ed-3538-89f2-7c4b4b197809/meta >>> @rdf:type http://s.opencalais.com/1/type/sys/DocInfoMeta; >>> http://d.opencalais.com/dochash-1/c2156224-66ed-3538-89f2-7c4b4b197809/meta >>> @c:language "English"; >>> http://d.opencalais.com/dochash-1/c2156224-66ed-3538-89f2-7c4b4b197809/meta >>> @c:processingVer "CalaisJob01"; >>> http://d.opencalais.com/dochash-1/c2156224-66ed-3538-89f2-7c4b4b197809/meta >>> @c:emVer "7.1.1103.5"; >>> http://d.opencalais.com/dochash-1/c2156224-66ed-3538-89f2-7c4b4b197809/meta >>> @c:submitterCode "c8b1bf20-11b5-9426-afb8-1af10ced91a7"; >>> http://d.opencalais.com/dochash-1/c2156224-66ed-3538-89f2-7c4b4b197809/meta >>> @c:contentType "TEXT/RAW"; >>> http://d.opencalais.com/dochash-1/c2156224-66ed-3538-89f2-7c4b4b197809/meta >>> @c:langIdVer "DefaultLangId"; >>> http://d.opencalais.com/dochash-1/c2156224-66ed-3538-89f2-7c4b4b197809/meta >>> @c:signature >>> "digestalg-1|uUMwnVwAYwcoIRl2ozky6uBts7Y=|f6zt1E2yFp3X0TQ8KAJi1TjwAhRMGK0WjmJXDhRTw1rUs6oLbBwP3w=="; >>> ... >>> >>> but what's missing is the "rdf:about" attribute in the rdf:Description >>> node. I need to be able to query this model to get the rdf:about value >>> along with many others, but it doesn't seem to be in the model at all. >>> What am I missing? >> >> rdf:about is just RDF/XML syntax; it doesn't exist in the RDF triple model. >> It says what the subject of the implied triples is. For example, in your >> RDF/XML we see: >> >> rdf:about="http://d.opencalais.com/dochash-1/dd3d9746-bbd3-3bd8-abdd-ee102300c824/meta"; >> >> with >> >> <rdf:type rdf:resource="http://s.opencalais.com/1/type/sys/DocInfoMeta"/> >> >> And in the model (which is being written out using the informal toString() >> notation, subject @predicate object) we see things like: >> >> http://d.opencalais.com/dochash-1/c2156224-66ed-3538-89f2-7c4b4b197809/meta >> �...@rdf:type http://s.opencalais.com/1/type/sys/DocInfoMeta >> >> (looks much better with model.write(System.out, "TTL") for Turtle notation). >> (Yes, different URL because incomplete data in post) >> >> The nested <rdf:type ...> has turned into a predicate, and the rdf:about has >> made http://lotsofstuff/meta the subject in the statement with that >> predicate. >> >> The XML structure of RDF/XML is pretty much irrelevant once it has >> been read into a model. >> >> Chris >> >> -- >> "He remembered -- not one thing, not another thing, nor a logical /Whose >> Body?/ >> succession of things, but everything -- the whole thing, perfect, >> complete in all its dimensions as it were and instantaneously; as if he >> stood outside the world and saw it suspended in infinitely-dimensional >> space." >> >> Epimorphics Ltd, http://www.epimorphics.com >> Registered address: Court Lodge, 105 High Street, Portishead, Bristol BS20 >> 6PT >> Epimorphics Ltd. is a limited company registered in England (number 7016688) >> >
