[protege-discussion] Setting the display name for a class (BrowserSlotPattern) - Does it work on a remote project?

[Tania Tudorache]

Hi Ron,

The class has to be both on the server and client. Make sure that the 
jar containing this class is also on the server.

Tania

Ron Schultz wrote:
> Tania,
>
> I tried the previously presented code, and then executed on a remote
> client as follows:
>
> 	ChangeBrowserSlotJob job = new ChangeBrowserSlotJob(kb,
> kb.getCls("PortletDisplayControl"),
> 	      kb.getSlot("name"));
> 	job.execute();
>
> I get a Class Not Found Exception : null class
>
> Any idea why I am getting a null class?
>
> EVERE: Exception
> edu.stanford.smi.protege.exception.ProtegeIOException:
> java.rmi.ServerException: RemoteException occurred in server thread;
> nested exception is:
> 	java.rmi.UnmarshalException: error unmarshalling arguments; nested
> exception is:
> 	java.lang.ClassNotFoundException: null class
> 	at edu.stanford.smi.protege.server.framestore.RemoteClientFrameStore.executeProtegeJob(Unknown
> Source)
> 	at edu.stanford.smi.protege.util.ProtegeJob.execute(Unknown Source)
> 	at com.aboutMyThings.client.PortletDisplaySlotAssigner.main(PortletDisplaySlotAssigner.java:83)
> Caused by: java.rmi.ServerException: RemoteException occurred in
> server thread; nested exception is:
> 	java.rmi.UnmarshalException: error unmarshalling arguments; nested
> exception is:
> 	java.lang.ClassNotFoundException: null class
> 	at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
> 	at sun.rmi.transport.Transport$1.run(Unknown Source)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at sun.rmi.transport.Transport.serviceCall(Unknown Source)
> 	at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
> 	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source)
> 	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> 	at java.lang.Thread.run(Unknown Source)
> 	at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:255)
> 	at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:233)
> 	at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:142)
> 	at edu.stanford.smi.protege.server.framestore.ServerFrameStore_Stub.executeProtegeJob(Unknown
> Source)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at edu.stanford.smi.protege.server.framestore.RemoteClientFrameStore$2.invoke(Unknown
> Source)
> 	at $Proxy1.executeProtegeJob(Unknown Source)
> 	at edu.stanford.smi.protege.server.framestore.RemoteClientFrameStore.executeProtegeJob(Unknown
> Source)
>
>
> On Thu, Mar 12, 2009 at 4:58 PM, Tania Tudorache <tudorache at stanford.edu> wrote:
>   
>> Hi Ron,
>>
>> A ProtegeJob to change the browser slot could look like below. If you
>> still have problems, please send me your implementation of the protege
>> job and what is not working.
>>
>> Tania
>>
>> ------------------
>>
>> class ChangeBrowserText extends ProtegeJob {
>>    private Cls cls;
>>    private Slot browserSlot;
>>
>>    public ChangeBrowserText(KnowledgeBase kb, Cls cls, Slot
>> newBrowserSlot) {
>>        super(kb);
>>        this.cls = cls;
>>        this.browserSlot = newBrowserSlot;
>>    }
>>
>>    @Override
>>    public Object run() throws ProtegeException {
>>        cls.setDirectBrowserSlot(browserSlot);
>>        return null;
>>    }
>>
>>    @Override
>>    public void localize(KnowledgeBase kb) {
>>        super.localize(kb);
>>        LocalizeUtils.localize(cls, kb);
>>        LocalizeUtils.localize(browserSlot, kb);
>>    }
>>
>> }
>>
>>     
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