Dear all,
Testing the 0.2.1. snapshot of the Fuseki distribution from the apache
respository, I ran into the following curious problem:
I have an N-triples file nace-sample.nt which looks like this:
<http://sws.ifi.uio.no/nace/SN2007/01>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://www.w3.org/2002/07/owl#Class> .
<http://sws.ifi.uio.no/nace/SN2007/01>
<http://www.w3.org/2000/01/rdf-schema#label>"Jordbruk og tjenester
tilknyttet jordbruk, jakt og viltstell"@nb.
<http://sws.ifi.uio.no/nace/SN2007/01>
<http://www.w3.org/2000/01/rdf-schema#comment>"SN2007 Næringskode:
01"@nb.
<http://sws.ifi.uio.no/nace/SN2007/01> <http://purl.org/dc/terms/title>
"Jordbruk og tjenester tilknyttet jordbruk, jakt og viltstell"@nb.
<http://sws.ifi.uio.no/nace/SN2007/01><http://sws.ifi.uio.no/vocab/nace/SN2007#nace>
"01"^^<http://www.w3.org/2001/XMLSchema#String>.
<http://sws.ifi.uio.no/nace/SN2007/01><http://sws.ifi.uio.no/vocab/nace/SN2007#level_id>
"2"^^<http://www.w3.org/2001/XMLSchema#int>.
<http://sws.ifi.uio.no/nace/SN2007/01><http://sws.ifi.uio.no/vocab/nace/SN2007#short_title>
"Jordbruk, tilhør. tjenester, jakt"@nb.
<http://sws.ifi.uio.no/nace/SN2007/01><http://sws.ifi.uio.no/vocab/nace/SN2007#medium_title>
"Jordbruk og tjenester tilknyttet jordbruk, jakt og viltstell"@nb.
<http://sws.ifi.uio.no/nace/SN2007/01.1>
<http://www.w3.org/2000/01/rdf-schema#subClassOf>
<http://sws.ifi.uio.no/nace/SN2007/01>.
<http://sws.ifi.uio.no/nace/SN2007/01.11>
<http://www.w3.org/2000/01/rdf-schema#subClassOf>
<http://sws.ifi.uio.no/nace/SN2007/01>.
<http://sws.ifi.uio.no/nace/SN2007/01.110>
<http://www.w3.org/2000/01/rdf-schema#subClassOf>
<http://sws.ifi.uio.no/nace/SN2007/01>.
<http://sws.ifi.uio.no/nace/SN2007/01.12>
<http://www.w3.org/2000/01/rdf-schema#subClassOf>
<http://sws.ifi.uio.no/nace/SN2007/01>.
<http://sws.ifi.uio.no/nace/SN2007/01.120>
<http://www.w3.org/2000/01/rdf-schema#subClassOf>
<http://sws.ifi.uio.no/nace/SN2007/01>.
<http://sws.ifi.uio.no/nace/SN2007/01.13>
<http://www.w3.org/2000/01/rdf-schema#subClassOf>
<http://sws.ifi.uio.no/nace/SN2007/01>.
<http://sws.ifi.uio.no/nace/SN2007/01.130>
<http://www.w3.org/2000/01/rdf-schema#subClassOf>
<http://sws.ifi.uio.no/nace/SN2007/01>.
I validated this file with RIOT, so it should be ok. Since I want to
persist data in TDB I do:
mkdir DB
followed by
./fuseki-server --update --loc=DB /dataset
and
./s-put http://localhost:3030/dataset/data default nace-sample.n3
The server returns a 204 No Content, so again everything should be
fine. Indeed using the Web-gui that ships with fuseki
'SELECT * WHERE {?s ?p ?o}' returns the table
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| s | p
| o
|
===========================================================================================================================================================================
| <http://sws.ifi.uio.no/nace/SN2007/01.13> |
<http://www.w3.org/2000/01/rdf-schema#subClassOf> |
<http://sws.ifi.uio.no/nace/SN2007/01> |
| <http://sws.ifi.uio.no/nace/SN2007/01> |
<http://sws.ifi.uio.no/vocab/nace/SN2007#medium_title> | "Jordbruk og
tjenester tilknyttet jordbruk, jakt og viltstell"@nb |
| <http://sws.ifi.uio.no/nace/SN2007/01> |
<http://sws.ifi.uio.no/vocab/nace/SN2007#short_title> | "Jordbruk,
tilhør. tjenester, jakt"@nb |
| <http://sws.ifi.uio.no/nace/SN2007/01> |
<http://sws.ifi.uio.no/vocab/nace/SN2007#level_id> | 2
|
| <http://sws.ifi.uio.no/nace/SN2007/01> |
<http://sws.ifi.uio.no/vocab/nace/SN2007#nace> |
"01"^^<http://www.w3.org/2001/XMLSchema#String> |
| <http://sws.ifi.uio.no/nace/SN2007/01> |
<http://purl.org/dc/terms/title> | "Jordbruk og
tjenester tilknyttet jordbruk, jakt og viltstell"@nb |
| <http://sws.ifi.uio.no/nace/SN2007/01> |
<http://www.w3.org/2000/01/rdf-schema#comment> | "SN2007
Næringskode: 01"@nb |
| <http://sws.ifi.uio.no/nace/SN2007/01> |
<http://www.w3.org/2000/01/rdf-schema#label> | "Jordbruk og
tjenester tilknyttet jordbruk, jakt og viltstell"@nb |
| <http://sws.ifi.uio.no/nace/SN2007/01> |
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type> |
<http://www.w3.org/2002/07/owl#Class> |
| <http://sws.ifi.uio.no/nace/SN2007/01.1> |
<http://www.w3.org/2000/01/rdf-schema#subClassOf> |
<http://sws.ifi.uio.no/nace/SN2007/01> |
| <http://sws.ifi.uio.no/nace/SN2007/01.120> |
<http://www.w3.org/2000/01/rdf-schema#subClassOf> |
<http://sws.ifi.uio.no/nace/SN2007/01> |
| <http://sws.ifi.uio.no/nace/SN2007/01.11> |
<http://www.w3.org/2000/01/rdf-schema#subClassOf> |
<http://sws.ifi.uio.no/nace/SN2007/01> |
| <http://sws.ifi.uio.no/nace/SN2007/01.110> |
<http://www.w3.org/2000/01/rdf-schema#subClassOf> |
<http://sws.ifi.uio.no/nace/SN2007/01> |
| <http://sws.ifi.uio.no/nace/SN2007/01.12> |
<http://www.w3.org/2000/01/rdf-schema#subClassOf> |
<http://sws.ifi.uio.no/nace/SN2007/01> |
| <http://sws.ifi.uio.no/nace/SN2007/01.130> |
<http://www.w3.org/2000/01/rdf-schema#subClassOf> |
<http://sws.ifi.uio.no/nace/SN2007/01> |
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Now, if I first shut down fuseki and then do:
./fuseki-server --desc=tdb.ttl /dataset
where tdb.ttl is the config file that ships with the distro, then I
would expect the data to still be accessible over the same URL.
Nevertheless, this time the very same query returns
-------------
| s | p | o |
=============
| | | |
| | | |
| | | |
| | | 2 |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
-------------
.. so the TDB instance is corrupt it seems.
I suspect it is of some significance that this does not (at least not
so far) happen if I load an xml/rdf or .ttl file. However, as I am
outputting RDF from XSLT I'd like to use N-Triples. Help is greatly
appreciated.
Best,
Audun Stolpe
