Hi Jason,
Sorry about the delay... I didn't get a mail regarding response to
this thread.
The fix I made was :
1. Within the Jena distribution, cd to src/com/hp/hpl/jena/rdf/model,
modify the constructor so that it does not use the offending rmi UID
generator
public AnonId() {
if (JenaParameters.disableBNodeUIDGeneration) {
synchronized (AnonId.class) {
id = "A" + idCount++; // + rand.nextLong();
}
} else {
id = java.util.UUID.randomUUID().toString();
}
}
You would need to import java.util.UUID for this.
There is another change as well ( attributed to Taylor Cowan)... both
of these can be found on the link here :
http://tech.groups.yahoo.com/group/jena-dev/message/39575
-Ic
On Aug 12, 5:19 am, "Jason (Google)" <[email protected]> wrote:
> Can you detail the fix? I'd love to add your pointer(s) to the "Will it play
> in App Engine" wiki
> page:http://groups.google.com/group/google-appengine-java/web/will-it-play...
>
> - Jason
>
> On Mon, Aug 10, 2009 at 3:16 PM, Icarus <[email protected]> wrote:
>
> > The issue was with the Jena Framework source code and fixing that made
> > it possible to run the app.
>
> > On Aug 11, 2:21 am, Icarus <[email protected]> wrote:
> > > Hi,
>
> > > While using the Jena Semantic Framework for extracting RDF based
> > > data, I come across the following error on GAE :
>
> > > Uncaught exception from servlet
> > > java.lang.NoClassDefFoundError: java.rmi.server.UID is a restricted
> > > class. Please see the Google App Engine developer's guide for more
> > > details.
> > > at
>
> > com.google.apphosting.runtime.security.shared.stub.java.rmi.server.UID.<clinit>
> > > (UID.java)
> > > at com.hp.hpl.jena.rdf.model.AnonId.<init>(AnonId.java:78)
> > > at com.hp.hpl.jena.rdf.model.AnonId.create(AnonId.java:60)
> > > at com.hp.hpl.jena.graph.Node.createAnon(Node.java:45)
> > > at com.hp.hpl.jena.rdf.arp.JenaReader.convert(JenaReader.java:
> > > 116)
> > > at com.hp.hpl.jena.rdf.arp.JenaReader.convert(JenaReader.java:
> > > 128)
> > > at com.hp.hpl.jena.rdf.arp.JenaHandler.statement
> > > (JenaHandler.java:73)
> > > at com.hp.hpl.jena.rdf.arp.impl.XMLHandler.triple
> > > (XMLHandler.java:
> > > 100)
> > > at com.hp.hpl.jena.rdf.arp.impl.ParserSupport.triple
> > > (ParserSupport.java:240)
> > > at
> > > com.hp.hpl.jena.rdf.arp.states.WantPropertyElement.aPredAndObj
> > > (WantPropertyElement.java:187)
> > > at
> > > com.hp.hpl.jena.rdf.arp.states.Frame.processPropertyAttributes
> > > (Frame.java:112)
> > > at
> > > com.hp.hpl.jena.rdf.arp.states.WantPropertyElement.startElement
> > > (WantPropertyElement.java:116)
> > > at com.hp.hpl.jena.rdf.arp.impl.XMLHandler.startElement
> > > (XMLHandler.java:137)
> > > at org.apache.xerces.parsers.AbstractSAXParser.startElement
> > > (Unknown
> > > Source)
> > > at
> > > org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement
> > > (Unknown Source)
> > > at org.apache.xerces.impl.XMLNamespaceBinder.handleStartElement
> > > (Unknown Source)
> > > at org.apache.xerces.impl.XMLNamespaceBinder.emptyElement
> > > (Unknown
> > > Source)
> > > at
> > > org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement
> > > (Unknown Source)
> > > at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl
> > > $FragmentContentDispatcher.dispatch(Unknown Source)
> > > at
> > > org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument
> > > (Unknown Source)
> > > at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown
> > > Source)
> > > at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown
> > > Source)
> > > at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
> > > at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown
> > > Source)
> > > at com.hp.hpl.jena.rdf.arp.impl.RDFXMLParser.parse
> > > (RDFXMLParser.java:
> > > 107)
> > > at com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:158)
> > > at com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:145)
> > > at com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:215)
> > > at com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:
> > > 188)
>
> > > This runs in dev mode on my local machine but gives problem from the
> > > deployment on GAE server.
>
> > > Any suggestions would be highly appreciated.
>
> > > -Ic
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