@Override
public InputStream getOntology(String syntax) throws IOException {
InputStream is;
JenaBeanExtension jbe;
// check the validity of user request on serialization syntax
if (syntax == null
|| syntax.equalsIgnoreCase("owl")
|| syntax.equalsIgnoreCase(Syntax.RDF_XML_ABBREV)) syntax = Syntax.RDF_XML;
syntax = syntax.toUpperCase();
// get the ontology document in required syntax
lock.readLock().lock();
InputStream fileIn = new FileInputStream(ontologyFile);
if (!syntax.equals(Syntax.RDF_XML)) {
jbe = new JenaBeanExtensionTool();
jbe.loadStatements(fileIn, Syntax.RDF_XML);
fileIn.close();
lock.readLock().unlock();
is = jbe.getOntologyDocument(syntax);
} else {
is = new ByteArrayInputStream(toByteArray(fileIn));
fileIn.close();
lock.readLock().unlock();
}
return is;
}
/**
* Creates an instance of JenaBeanExtension with loaded model.
*
* @return instance of JenaBeanExtension
*/
private JenaBeanExtension creatingJenaBean(List<Object> dataList) {
JenaBeanExtension jbe = new JenaBeanExtensionTool();
try {
jbe.loadStatements(ontologyHeader.getInputStream(), Syntax.RDF_XML_ABBREV);
} catch (IOException e) {
log.error(
"Could not open the input stream associated with the ontology header "
+ "configuration document: "
+ ontologyHeader.getFilename(),
e);
}
jbe.loadOOM(dataList);
// jbe.declareAllClassesDisjoint();
return jbe;
}
@Override
public InputStream getOntologySchema(String syntax) throws IOException {
InputStream is;
JenaBeanExtension jbe;
// create the ontology schema
lock.readLock().lock();
InputStream fileIn = new FileInputStream(ontologyFile);
jbe = new JenaBeanExtensionTool();
jbe.loadStatements(fileIn, Syntax.RDF_XML);
fileIn.close();
lock.readLock().unlock();
is = jbe.getOntologySchema(Syntax.RDF_XML_ABBREV);
return is;
}
/**
* Transforms the object-oriented model into the OWL ontology. Serialization of this ontology is
* stored in a temporary file.
*/
public void transformModel() {
JenaBeanExtension jbe;
OutputStream out;
try {
List<Object> dataList = loadData();
jbe = creatingJenaBean(dataList);
lock.writeLock().lock();
out = new FileOutputStream(ontologyFile);
jbe.writeOntologyDocument(out, Syntax.RDF_XML);
out.close();
} catch (FileNotFoundException e) {
log.error("Could not find the temporary rdf/xml file to store the ontology!", e);
} catch (IOException e) {
log.error("Could not close the temporary rdf/xml file!", e);
} catch (Exception e) {
log.error("Could not create the ontology!", e);
} finally {
lock.writeLock().unlock();
}
}