On 22/08/14 10:20, Iturraspe Barturen, Urtza wrote:
Good morning,
I am developing an application that upload an ontology and its information in a
jena model. After of this I use this information to edit manually all
information like classes, properties (data, object).
If a specific ontology has another ontologies imported I need to take
information from them and include it in a unique Jena Model.
I have problems with prefixes, because when I import main ontology to a jena
model it works well but when I add the imported ontologies (In importOntologies
methos) to the model the prefixes are not maintained.
Someone can help me with this?
What's the actual problem?
Prefixes are specific to a model. Prefixes defined in an imported
ontology are recorded in the model for, they don't appear in the model
for the importing ontology.
If you need to copy prefixes from one Model to another then use
setNsPrefixes.
If by "prefixes" you actually mean relative URIs then you do have a
problem with your code here:
model.read(fIn,"http://www.w3.org/1999/02/22-rdf-syntax-ns#";);
should be:
model.read(fIn, uri);
The base URI for a model you download from somewhere is the place you
downloaded it from.
Dave
Thanks in advance.
The code is here:
public Model uploadModelFromFile(HttpServletRequest
request,String user,String databaseName,String file,String path) {
Model model = null;
DAOOntologia daoOntologia=new DAOOntologia();
try {
if (jenaSDBConection == null)
jenaSDBConection = this.abrirConexionJenaSDB(databaseName);
StoreDesc storeDesc = new
StoreDesc(LayoutType.LayoutTripleNodesHash, DatabaseType.MySQL);
Store store =
StoreFactory.create(storeDesc, jenaSDBConection);
logger.trace("StoreUtils.isFormatted(store=" + store.hashCode() + ") == " +
StoreUtils.isFormatted(store));
try {
logger.trace("store.getSize() == " + store.getSize());
} catch
(com.hp.hpl.jena.sdb.sql.SDBExceptionSQL e) {
formatStore(store, true);
}
model =
SDBFactory.connectDefaultModel(store);
path=path+file;
InputStream in =
FileManager.get().open(path);
if (in == null) throw new
IllegalArgumentException("Archivo no encontrado");
model.read(in,
"http://www.w3.org/1999/02/22-rdf-syntax-ns#";);
in.close();
model=importOntologies(model,
request,databaseName, user,path);
logger.trace("JENA (" + model.hashCode() + ")
[#" + numeroConexiones + " SDBConnections]");
} catch (Exception e) {
System.out.println(e.toString());
return null;
}
return model;
}
public Model importOntologies(Model model, HttpServletRequest
request,String databaseName, String user,String path){
DAOOntologia daoOntologia=new DAOOntologia();
DAOMySQL daoMysql=new DAOMySQL();
try{
HttpSession session = request.getSession();
user=(String)session.getAttribute("uname");
ServletContext context = session.getServletContext();
path = context.getRealPath("").replace("\\", "/");
path = path.substring(0, path.lastIndexOf("/"));
path += "/" + GetProperties.getString("files.raiz.upload");
logger.debug("path para guardar la ontologia ->" + path);
OntModel om = ModelFactory.createOntologyModel();
om.add(model);
om.setDynamicImports(true);
System.out.println("Importing ontologies:
"+om.listImportedOntologyURIs().size());
for(Iterator it = om.listImportedOntologyURIs().iterator();
it.hasNext();)
{
String uri=it.next().toString();
System.out.println("URI:"+uri);
//to know if uri it's a file web location
String fileName="";
int slashIndex =uri.lastIndexOf('/');
int periodIndex =uri.lastIndexOf('.');
if ((slashIndex!=-1)&&(periodIndex!=-1)){
fileName=uri.substring(slashIndex + 1);
System.out.println("File name:"+fileName);
}
if (fileName.contains(".owl")||(fileName.contains(".rdf")))
{
InputStream fIn=null;
fIn=daoOntologia.saveFileFromUrlWithJavaIO(request,uri,fileName);
if (fIn!=null){
model.read(fIn,"http://www.w3.org/1999/02/22-rdf-syntax-ns#";);
}
else{
model=null;
String sentenciaSql="drop database "+databaseName;
int iRes=daoMysql.executeQuery(sentenciaSql);
break;
}
}
else{
System.out.println("\t Ontology "+uri);
try{
URL myURL = new URL(uri);
URLConnection myURLConnection = myURL.openConnection();
myURLConnection.connect();
model.read(uri,"http://www.w3.org/1999/02/22-rdf-syntax-ns#";);
}
catch(Exception e){
daoOntologia.deleteSpecificOntology(databaseName, user,path);
model=null;
}
}
}
}
catch (Exception e){
System.out.println(e.getMessage());
model=null;
}
return model;
}
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