Dear Mr Taiden,
the code below I used to create an ontology tree into my application. Maybe
this can hep you:
ExtendedIterator<OntClass> i = ontModel.listClasses();
while (i.hasNext()) {
OntClass ontClass = (OntClass) i.next();
String prefix =
ontModel.getNsURIPrefix(ontClass.getNameSpace());
String name = ontClass.getLocalName();
if (classes.get(name + prefix) == null) {
Class_ c = new Class_(prefix, name);
classes.put(prefix + name, c);
mapPrefixes.put(prefix, ontClass.getNameSpace());
OntClass superClass = ontClass.getSuperClass();
if (superClass != null) {
String superName = superClass.getLocalName();
String superPrefix =
ontModel.getNsURIPrefix(superClass.getNameSpace());
Class_ superC = classes.get(superPrefix + superName);
if (superC == null) {
superC = new Class_(superPrefix, superName);
classes.put(superPrefix + superName, superC);
mapPrefixes.put(superPrefix,
superClass.getNameSpace());
}
c.setSuperClass(superC);
}
}
}
ExtendedIterator<DatatypeProperty> i2 = ontModel
.listDatatypeProperties();
while (i2.hasNext()) {
DatatypeProperty datatypeProperty = (DatatypeProperty)
i2.next();
if (datatypeProperty.getDomain() != null &&
datatypeProperty.getRange() != null) {
String dClassPrefix =
ontModel.getNsURIPrefix(datatypeProperty.getDomain().getNameSpace());
String dClassName =
datatypeProperty.getDomain().getLocalName();
Class_ dClass = classes.get(dClassPrefix + dClassName);
String dpName = datatypeProperty.getLocalName();
String dpPrefix =
ontModel.getNsURIPrefix(datatypeProperty.getNameSpace());
String rangeName =
datatypeProperty.getRange().getLocalName();
DataProperty dp = new DataProperty(dpPrefix, dpName,
dClass, rangeName);
if (dClass != null) {
dClass.getdProperties().add(dp);
mapPrefixes.put(dpPrefix,
datatypeProperty.getNameSpace());
}
}
}
ExtendedIterator<com.hp.hpl.jena.ontology.ObjectProperty> i3 =
ontModel.listObjectProperties();
while (i3.hasNext()) {
ObjectProperty objectProperty = (ObjectProperty) i3.next();
if (objectProperty.getDomain() != null &&
objectProperty.getRange() != null) {
String dClassPrefix =
ontModel.getNsURIPrefix(objectProperty.getDomain().getNameSpace());
String dClassName =
objectProperty.getDomain().getLocalName();
String rClassPrefix =
ontModel.getNsURIPrefix(objectProperty.getDomain().getNameSpace());
String rClassName =
objectProperty.getRange().getLocalName();
String opName = objectProperty.getLocalName();
String opPrefix =
ontModel.getNsURIPrefix(objectProperty.getNameSpace());
Class_ dClass = classes.get(dClassPrefix + dClassName);
Class_ rClass = classes.get(rClassPrefix + rClassName);
ObjProperty op = new ObjProperty(opPrefix, opName, dClass,
rClass);
if (dClass != null) {
dClass.getoProperties().add(op);
mapPrefixes.put(opPrefix,
objectProperty.getNameSpace());
}
}
}
2013/4/20 aar thi <[email protected]>
> Set<String> prop = new HashSet<String>();
> ExtendedIterator rootIterator =
> classname.listDeclaredProperties();
> int i=0;
> while (rootIterator.hasNext()){
> OntProperty ontRoot = (OntProperty) rootIterator.next();
> String properties = ontRoot.toString();
> int propertyLength = properties.length();
> int propertyIndex = properties.lastIndexOf("#");
> if (propertyIndex != -1){
> String property = properties.substring(propertyIndex+1,
> propertyLength);
> prop.add(property);
> }
> }
>
> but this code display a property again and again.... i used to get
> a single property multiple times.. how to avoid that?
>
>
> On Fri, Apr 19, 2013 at 2:48 PM, Andy Seaborne <[email protected]> wrote:
>
> > On 19/04/13 19:21, aar thi wrote:
> >
> >> hi i'm doing a small project in ontology, i need to retrieve all the
> >> property names present in a particular class in the ontology. some one
> >> help
> >> me to do that in jena
> >>
> >>
> > What have you tried?
> >
> >
> >
>
--
Um abraço,
Luís Eufrasio T. Neto
MSN: [email protected]
"Ser LIVRE é ser capaz de AMAR sem exigir nada em troca."
