Dear All,
I am trying to load an Ontology (attached) where there are classes with the
same datatype property. For example:
foaf:Document a owl:Class , rdfs:Class ;
rdfs:label "foaf:Document" ;
rdfs:subClassOf [ a owl:Restriction ;
owl:onProperty dc:creator ;
owl:maxCardinality "2"^^<http://www.w3.org/2001/XMLSchema#int>
] .
dc:title
a rdf:Property , owl:DatatypeProperty ;
rdfs:domain foaf:Document;
rdfs:label "dc:title" ;
rdfs:range xsd:string .
*dc:date*
* a rdf:Property , owl:DatatypeProperty ;*
* rdfs:domain foaf:Document;*
* rdfs:label "dc:date" ;*
* rdfs:range xsd:string .*
and
conf:Conference a owl:Class , rdfs:Class ;
rdfs:label "conf:Conference" .
rdfs:label
a rdf:Property , owl:DatatypeProperty ;
rdfs:domain conf:Conference;
rdfs:label "rdfs:label" ;
rdfs:range xsd:string .
*dc:date*
* a rdf:Property , owl:DatatypeProperty ;*
* rdfs:domain conf:Conference;*
* rdfs:label "dc:date" ;*
* rdfs:range xsd:string .*
*
*
So datatype property dc:date is reused into classes foaf:Document and
conf:Conference.
The problem is: when I load the ontology the datatype porperty dc:date only
appears one time with conf:Conference as domain class.
I need that it appears for the two classes. Below follows the code I wrote
for loading it:
OntModel ontModel = ModelFactory
.createOntologyModel(OntModelSpec.OWL_MEM);
String filePath = mc.getOntologyFilePath();
if (filePath != null && !"".equals(filePath)) {
ontModel.read(new FileInputStream(new File(filePath)),
"http://ufc.br/rdb2rdfmb/";, mc.getOntologyLang());
} else {
ontModel.read(mc.getOntologyURL(), mc.getOntologyLang());
}
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());
}
}
}
--
Kind Regards,
Luís Eufrasio T. Neto
MSN: [email protected]
"Ser LIVRE é ser capaz de AMAR sem exigir nada em troca."
