On 08/12/11 02:19, xh-zh wrote:
First, when I load a model from TDB, I will need to get the baseURI
of the model with OntModel.getNsPrefixURI(""), but I always get null.
I can only get four prefixes of the model with
OntModel.getNsPrefixMapping(), which are rdfs, rdf, owl and xsd.
second, I read the source code of TDB, when it create the dataset or
graph, it does create the prefixes of the graph according to reading
the prefixes.dat, but the prefixes.dat is empty.
finally, according to the source code of TDB, I did not find the code
about processing and storing the prefixes in my input file, such as
owl file and N3 file. If TDB does processing the prefixes in the
input file while loading data, can you tell me which classes are
related?
I'm guessing its not storing them. To investigate, I need a complete,
minimal example and until yesterday it has not been clear how you're
loading the base data. The fact it's tdbloader is an important point;
Fuseki does not use it.
Some things are not clear:
* Is the database empty at the start of the load?
* which version of TDB are you using?
* what OS are you running?
* is this 32 or 64 bit java?
Andy
