Hi Sophie,
On 17/02/11 21:41, Sophie Yang wrote:
I try to bulk load a large OWL file into TDB. The file imports a bunch of
sub-ontologies using<owl:imports> element. When I try the tdbloader
command-line tool, it appears that the loader does not recognize owl:imports and
read the imported file. It is understandable since tdb is a rdf store. Another
option I can think of is to build an OntModel first, then write into tdb.
However, my ontology is large (400M triples), although I use a subset with 4M
triples for testing currently. I don't think the ontology can fit into an
in-memory model. Do you have any suggestion on how to make it work?
Use the TDB model as the base model of your OntModel (untested code, but
should work):
Model tdbBase = TDBFactory.createModel( 'your/tdb/file' );
OntModel ontTdb = ModelFactory.createOntologyModel(
OntModelSpec.OWL_MEM, tdbBase );
ontTdb.read( "http://your.ontology/file"; );
Hth,
Ian
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