public VocabBuilder(String filename, RDFFormat format) throws IOException, RDFParseException {
Path file = Paths.get(filename);
if (!Files.exists(file)) throw new FileNotFoundException(filename);
if (format == null) {
format = Rio.getParserFormatForFileName(filename);
log.trace("detected input format from filename {}: {}", filename, format);
}
try (final InputStream inputStream = Files.newInputStream(file)) {
log.trace("Loading input file");
model = Rio.parse(inputStream, "", format);
}
// import
Set<Resource> owlOntologies = model.filter(null, RDF.TYPE, OWL.ONTOLOGY).subjects();
if (!owlOntologies.isEmpty()) {
setPrefix(owlOntologies.iterator().next().stringValue());
}
}
