hi thanks.. it worked correctly. because i didn't add the jena files correctly.sorry for that. and i need to retrieve the class and properties names from an ontology. if i execute my previous code i just got the triple format. is there anyway to store the class and properties names in a separate file or in a database? if its possible please guide me.....
On 3/30/13, Andy Seaborne <[email protected]> wrote: > Which version of Jena is this? > > Jena doesn't use Apache commons logging (it did a long time ago, I > think). For some libraries we use, there is a Apache commons logging > dependency, which is met via jcl-over-slf4j in the POMs. > > But that's nowhere near PropertyImpl, which has a reference to SLF4J > nowadays. > > Andy > > >>> 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) > > > On 30/03/13 13:38, John A. Fereira wrote: >> Specifically, you'll need to include the commons-logging jar file in your >> classpath. Typically that would mean specifying a directory which >> includes that jar file as well as the jar files for the jena library and >> any other dependency library. You'll probably also need to include one >> for log4j or simple logging (slf4j) library. >> >>> -----Original Message----- >>> From: Milorad Tosic [mailto:[email protected]] >>> Sent: Saturday, March 30, 2013 9:07 AM >>> To: aarthi; users >>> Subject: Re: >>> >>> Looks like you need to include an additional library for >>> org.apache.commons.logging.LogFactory class. >>> >>> Regards, >>> Milorad >>> >>> >>> >>> >>> >>>> ________________________________ >>>> From: aarthi <[email protected]> >>>> To: Milorad Tosic <[email protected]>; users <[email protected]> >>>> Sent: Saturday, March 30, 2013 1:56 PM >>>> Subject: >>>> >>>> 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; >>>>PropertyImpl >>>> 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>(BuiltinPersonal >>> i >>>> ties.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.ja >>> v >>>> a: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... >>>> >>>> >>>> >> > >
