Hi,
I have a couple of QUAD maps on top of relational tables. When I query the
graph, which is defined by the QUAD map, without binding the property all
triples with data properties will have the object
"iri_id_0_with_no_name_entry" or in some cases "node://" followed by
numbers. Object properties work fine. Example:
I run the query:
CONSTRUCT {?S ?P ?O}
FROM <http://extbi.lab.aau.dk/materialized_data/business>
WHERE {
?S ?P ?O . FILTER(?S = <
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this>)}
through the isql(-vt) interface or the conductor SPARQL interface and get:
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/name iri_id_0_with_no_name_entry
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/productionUnitIdentifier
iri_id_0_with_no_name_entry
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/telephoneNumberIdentifier
iri_id_0_with_no_name_entry
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/hasActivity
http://extbi.lab.aau.dk/data/business/activity/description/aldersintegrerede_institutioner#this
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/mainActivityValidFromDate
iri_id_0_with_no_name_entry
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/officialAddress
http://extbi.lab.aau.dk/data/business/address/Ølstedvej_24____3310__#this
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/startDate
iri_id_0_with_no_name_entry
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/nameValidFromDate
iri_id_0_with_no_name_entry
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://extbi.lab.aau.dk/ontologies/business/ProductionUnit
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/belongsTo
http://extbi.lab.aau.dk/data/business/company/29188416#this
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/mainDivisionIndicator
iri_id_0_with_no_name_entry
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/employmentQuarterEmploymentIntervalCode
iri_id_0_with_no_name_entry
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/addressOfficialValidFromDate
iri_id_0_with_no_name_entry
I experience the same when using a SELECT query. If i bind the predicate to
one of the data properties it works fine and I get the data I would expect,
example:
CONSTRUCT {?S ?P ?O}
FROM <http://extbi.lab.aau.dk/materialized_data/business>
WHERE {
?S ?P ?O . FILTER(?S = <
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this> && ?P
=<http://extbi.lab.aau.dk/ontologies/business/name>)}
results in:
http://extbi.lab.aau.dk/data/business/productionunit/1008862857#this
http://extbi.lab.aau.dk/ontologies/business/name Ølsted Børnehus -
Afdeling Ølstedvej
Note that this is a predicate which failed before when the the predicate ?P
was variable. I have even made queries with several ORs between the "?P =
<...>" conditions, thereby getting all the data required. However, this
makes the my queries quite big and unwieldy, not to mention very inflexible.
My first thought was that it might be permissions with the IRI classes or
the QUAD maps, since I have been running in to such problems before.
However, I am running the queries as DBA and would therefore expect to have
full permissions to everything.
Any ideas? I am running on Ubuntu with version:
- Version: 07.10.3207
- Build: Apr 2 2014
--
Med venlig hilsen / Best Regards
Alex Bondo Andersen
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