Lots of semantic data loading
I'm trying to load a file of N3 pending Oracle 11 g. Basically, it's the same data as in the example of the family (here: http://tinyurl.com/yl9zqtl) I put in a file of N3. I'm running a command like below (by: http://tinyurl.com/yjp4olv)Java - Ddb.user = < dbuser > - Ddb.password = < pass > - Ddb.host = 127.0.0.1 - Ddb.port = 11521 - Ddb.sid = oracle - cp sdordf.jar:ojdbc6.jar oracle.spatial.rdf.client.BatchLoader family.n3 family_rdf_data rdf_tablespace fam
The "family.n3" file looks like:
@prefix fam: < http://www.example.org/family.rdf# >.
@prefix rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# >.
FAM:John RDF: type fam:Male;
FAM:fatherOf fam:Suzie;
FAM:fatherOf fam:Matt.
FAM:Janice fam:motherOf fam:Suzie;
FAM:motherOf fam:Matt.
FAM:Sammy fam:fatherOf fam:Cathy;
FAM:fatherOf fam:Jack.
.. .etc
Then, I get an error message in the BatchLoader program:
The batch loading has begun...
Subject: @prefix
Property: rdf:
Subject: < http://www.w3.org/1999/02/22-rdf-syntax-ns# >
Maximum loading of rows = 2
java.lang.StringIndexOutOfBoundsException: String index out of range:-1
at java.lang.String.substring(String.java:1937)
at oracle.spatial.rdf.client.NTripleTokenizer.parse(NTripleTokenizer.java:71)
at oracle.spatial.rdf.client.NTripleConverter.loadNTriple(NTripleConverter.java:534)
at oracle.spatial.rdf.client.BatchLoader.main(BatchLoader.java:302)
It errors on the first line if I remove the second line from the top. I'm doing something wrong? I glued the N3 file in a validator N3 (found here: http://www.rdfabout.com/demo/validator/) and it validates, so the N3 of the file at least looks like it works very well.
Thank you
Ryan
Hi Ryan,
The charger of the lot at sdordf.jar does not accept the N3 format. You can try one of the following
-you use Jena adapter (which accepts the N3, NTRIPLE, RDF/XML), or
-convert N3 NTriple format and re - try batch fetching.
See you soon,.
Zhe Wu
Tags: Database
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