;-) just found out how i can do this myself... i'll provide a patch for tracker-resource.vala during the next coming days, just in case some finds this interesting..
wkr turnguard | Jürgen Jakobitsch, | Software Developer | Semantic Web Company GmbH | Mariahilfer Straße 70 / Neubaugasse 1, Top 8 | A - 1070 Wien, Austria | Mob +43 676 62 12 710 | Fax +43.1.402 12 35 - 22 COMPANY INFORMATION | web : http://www.semantic-web.at/ | foaf : http://company.semantic-web.at/person/juergen_jakobitsch PERSONAL INFORMATION | web : http://www.turnguard.com | foaf : http://www.turnguard.com/turnguard | g+ : https://plus.google.com/111233759991616358206/posts | skype : jakobitsch-punkt | xmlns:tg = "http://www.turnguard.com/turnguard#"; 2014-04-17 21:40 GMT+02:00 Jürgen Jakobitsch <j.jakobit...@semantic-web.at>: > hi ivan, thanks for you replay... > > i'm translating the the values (literals, uris, ...) in my wrapper at the > moment... but parsing strings can go wrong sometimes... > i also just read about dbus types (aas) [1]. > > there could be an easy workaround, which would make the calls more user > friendly, but it would have to be in a future release on the tracker side, > where the information is apparently still available. > > you could return > > <${uriString}> for URIs (e.g.: "<http://example.org/some/path>") > _:${bNodeId} for BNodes (e.g.: "_:xpd154") > "${literalString}" for untyped literals (e.g.: ""plain literal"") > "${literalString}"@${language} for language tagged literals (e.g.: ""plain > english text"@en") > "${literalString}"^^<${dataTypeURIString}> for typed literal (e.g.: > ""2014-03-30T14:32:09Z"^^<http://www.w3.org/2001/XMLSchema#dateTime>") > > this way tracker could stay with "aas" response (Vector<Vector<String>>) > is still return rdf term information. this would also correspond to rdf > formats like turtle [1]. > can i add this as a feature request somewhere? > > wkr turnguard > > > [1] http://dbus.freedesktop.org/doc/dbus-tutorial.html > [2] http://www.w3.org/TR/turtle/ > > | Jürgen Jakobitsch, > | Software Developer > | Semantic Web Company GmbH > | Mariahilfer Straße 70 / Neubaugasse 1, Top 8 > | A - 1070 Wien, Austria > | Mob +43 676 62 12 710 | Fax +43.1.402 12 35 - 22 > > COMPANY INFORMATION > | web : http://www.semantic-web.at/ > | foaf : http://company.semantic-web.at/person/juergen_jakobitsch > PERSONAL INFORMATION > | web : http://www.turnguard.com > | foaf : http://www.turnguard.com/turnguard > | g+ : https://plus.google.com/111233759991616358206/posts > | skype : jakobitsch-punkt > | xmlns:tg = "http://www.turnguard.com/turnguard#"; > > > 2014-04-17 20:14 GMT+02:00 Ivan Frade <ivan.fr...@gmail.com>: > > Hi Jürgen, >> >> Yes, tracker does not return bindingNames or types of the resulting >> nodes. It assumes the client takes care of interpreting the results of its >> query. >> >> A workaround would be to parse the SparQL in the wrapper and add that >> information when translating the DBus result set to the openrdf format. The >> binding Names can be added straight forward from the SELECT of the query. >> The type information is more complicated to deduce, based on the position >> in the query and/or the rdfs:range of the properties (defined in the >> ontology). >> >> Regards, >> >> Ivan >> >> >> On Thu, Apr 17, 2014 at 10:11 AM, Jürgen Jakobitsch < >> j.jakobit...@semantic-web.at> wrote: >> >>> hi, >>> >>> i'm currently developing an openrdf [1] repository implementation with >>> a tracker-sparql backend via dbus. this will enable java developers to >>> include tracker-sparql results in any application (or create a sparql >>> endpoint) >>> extremly easily. openrdf's api is quite common in the semweb community.. >>> >>> everything is working very nice already the only trouble i'm having is >>> that >>> i get a vector of vectors containing simple strings as a result object, >>> meaning >>> i need to find out types (literals, uris, bnodes, typed literals).. >>> >>> is there any known way to retrieve some more information in the results >>> given via dbus? >>> also bindingNames are missing... >>> >>> any pointer really appreciated >>> wkr turnguard.. >>> >>> >>> [1] http://www.openrdf.org/ >>> >>> | Jürgen Jakobitsch, >>> | Software Developer >>> | Semantic Web Company GmbH >>> | Mariahilfer Straße 70 / Neubaugasse 1, Top 8 >>> | A - 1070 Wien, Austria >>> | Mob +43 676 62 12 710 | Fax +43.1.402 12 35 - 22 >>> >>> COMPANY INFORMATION >>> | web : http://www.semantic-web.at/ >>> | foaf : http://company.semantic-web.at/person/juergen_jakobitsch >>> PERSONAL INFORMATION >>> | web : http://www.turnguard.com >>> | foaf : http://www.turnguard.com/turnguard >>> | g+ : https://plus.google.com/111233759991616358206/posts >>> | skype : jakobitsch-punkt >>> | xmlns:tg = "http://www.turnguard.com/turnguard#"; >>> >>> _______________________________________________ >>> tracker-list mailing list >>> tracker-list@gnome.org >>> https://mail.gnome.org/mailman/listinfo/tracker-list >>> >>> >> >
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