hi..
i'm doing my project with ontology. i need to retrieve the class and
properties names in order to compare them for equality. to retrieve
the class an property names i'm using a
java code. i have attached that code with this mail. but i got some
error, I don't know how to resolve that. for that i had import
com.hp.hpl.jena package. i dont get the classpath files and javadoc
files. is it enough if i add only the source package? pls help me....
this is my code:
//package testejena;
import com.hp.hpl.jena.ontology.OntClass;
import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.ontology.OntModelSpec;
import com.hp.hpl.jena.rdf.model.ModelFactory;
import com.hp.hpl.jena.util.FileManager;
import com.hp.hpl.jena.util.iterator.ExtendedIterator;
import java.io.InputStream;
import java.util.Iterator;
public class testeProp {
static final String inputFileName = "newspaper.owl";
public static void main(String args[]) {
try {
//create the reasoning model using the base
OntModel inf =
ModelFactory.createOntologyModel(OntModelSpec.OWL_MEM);
// use the FileManager to find the input file
InputStream in = FileManager.get().open(inputFileName);
if (in == null) {
throw new IllegalArgumentException("File: " +
inputFileName + " not found");
}
inf.read(in, "");
String URI =
"http://www.owl-ontologies.com/Ontology1363337688.owl#";;
ExtendedIterator classes = inf.listClasses();
while (classes.hasNext()) {
OntClass essaClasse = (OntClass) classes.next();
String vClasse = essaClasse.getLocalName().toString();
if (essaClasse.hasSubClass()) {
System.out.println("Classe: " + vClasse);
OntClass cla = inf.getOntClass(URI + vClasse);
for (Iterator i = cla.listSubClasses(); i.hasNext();) {
OntClass c = (OntClass) i.next();
System.out.print(" " + c.getLocalName() + " " + "\n");
}
}
}
} catch (Exception e) {
System.out.println("there may be error");
System.out.println(e.getMessage());
}
}
}
--------------------------------------------------------------------------------------------------
if i run my program i got the following error:
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/commons/logging/LogFactory
at
com.hp.hpl.jena.rdf.model.impl.PropertyImpl.<clinit>(PropertyImpl.java:58)
at
com.hp.hpl.jena.enhanced.BuiltinPersonalities.<clinit>(BuiltinPersonalities.java:28)
at com.hp.hpl.jena.rdf.model.impl.ModelCom.<init>(ModelCom.java:51)
at
com.hp.hpl.jena.rdf.model.ModelFactory.createDefaultModel(ModelFactory.java:119)
at
com.hp.hpl.jena.rdf.model.ModelFactory.createDefaultModel(ModelFactory.java:113)
at
com.hp.hpl.jena.rdf.model.impl.ModelSpecImpl.<clinit>(ModelSpecImpl.java:56)
at testeProp.main(testeProp.java:16)
Caused by: java.lang.ClassNotFoundException:
org.apache.commons.logging.LogFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
... 7 more
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)
please anyone help me...
