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[protege-owl] [POSSIBLE VIRUS:###] Re: Problem in reading and writing owl file

Timothy Redmond tredmond at stanford.edu
Mon Aug 31 17:07:24 PDT 2009


I put that project together quickly using the Protege standard build
files.  So you will need to follow the instructions inn [1] to set the
PROTEGE_HOME environment variable.

-Timothy


[1] http://protegewiki.stanford.edu/index.php/ConfiguringAntBuildFiles

On Mon, 2009-08-31 at 16:49 -0700, Timothy Redmond wrote:
> The error you are getting is a bit strange also.  It wasn't
> ClassNotFound but method not found.  This makes me think that what
> actually may be happening is that you have either the wrong
> xercesImpl.jar, a duplicate or some other jar that contains the relevant
> class.
> 
> I am pretty sure that it is a classpath issue for a couple of reasons.
> First I ran your program without any problem here.  Second, looking at
> the exception, it is saying that the jena library, in particular an
> inner class with the name
> 
>    com.hp.hpl.jena.rdf.arp.impl.RDFXMLParser$MySAXParser
> 
> could not find a xerces library  method:
> 
>      org.apache.xerces.parsers.SAXParser.<init>(...)
> 
> We know that at one time the jena library compiled so (unless reflection
> or something strange is involved) this method must have been present in
> the xerces libraries.  (Even if reflection is involved, which I doubt,
> the jena developers believed that this method would be present.)
> 
> IDE's can be configured in millions of ways and have their own rules.
> So it isn't really possible for me to debug a netbeans ide issue.  If
> you want me to help debug this further, we will have to reduce this to
> pure java.  I made a small project.  Uncompress it and execute 
> 
>     ant run.
> 
> It should run fine.  Then get you just need to figure  out how to  get
> the IDE to run it the same way.
> 
> -Timothy
> 
> 
> 
> 
> On Mon, 2009-08-31 at 17:10 +0100, Muhammad Javed wrote:
> > What I did is...I collected all the Jar files from installation of
> > Protege 3.4.1 and saved them in one Folder. Then I added them in Net
> > Beans project's Properties. I just checked there....these Jar files
> > are also included.
> > 
> > 
> > Note: the code executes normally if I create NamedClasses, Properties,
> > Individuals etc .....problems starts if I try to save them in a file.
> > The Question arise, if OWL Jar files are working fine why not
> > xml-apis.jar and xercesImpl.jar. It seems that Jar files are added
> > correctly.
> > 
> > 
> > regards
> > Muhammad Javed
> > 
> > 
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