[Mulgara-general] Errors using Descriptors
Trina Myers
t.myers at bigpond.net.au
Wed Oct 10 06:34:55 UTC 2007
Thankyou both for the quick response and your great suggestion Xavier,
I did what you suggested however it didn't work straight away, but once I
read a bit more on Xalan-java it stated that the 4 files would be needed
(not just xercesImpl.jar and serializer.jar but also the xalan.jar and
xml-apis.jar files), once I added them to the JVM directory the descriptors
work perfectly.
At this stage I am just getting used to using Mulgara (total newbie) so I am
just going through the tutorials to see what is available. I can definitely
see the Descriptors being a bonus in my implementation.
Until next time :D
Cheers
Trina
-----Original Message-----
From: mulgara-general-bounces at mulgara.org
[mailto:mulgara-general-bounces at mulgara.org] On Behalf Of Paul Gearon
Sent: Wednesday, 10 October 2007 1:41 AM
To: Mulgara General
Subject: Re: [Mulgara-general] Errors using Descriptors
This probably came about when I moved Mulgara from Java 1.4 to Java 1.5.
Java 1.4 came with small pieces of Xerces built into it, and the Descriptors
were built around this. Java 1.5 separated these pieces out into a
different set of packages so they wouldn't interfere with anyone else's
code, which was good.... but created problems for me trying to get it right.
:-)
Unfortunately, it seems that I wasn't quite successful.
I'm hoping to update a number of the network interfaces in the near future,
so I expect I should be able to clean descriptors up then (I've never
actually used them, so I've yet to work out how they work!). In the
meantime, thanks for the suggestion Xavier.
Regards,
Paul Gearon
On 10/9/07, Xavier Llorà <xllora at ncsa.uiuc.edu> wrote:
> Hi Tina,
>
> We ran into this one and there is a way to circumvent it. It is a
> quick fix, but it worked for us. The problem is that Mulgara uses a
> Jetty embedded service. The distribution jar misses by default two
> required jar files to run properly Xerces and Xalan (based of the XSLT
> transformations used by the descriptors). Drop xercesImpl.jar and
> serializer.jar (just go and download them from the apache site, you
> may find them in the last 2.6.X or early 2.7.X Xalan releases) into
> java/ext of your JVM directory so the class loader used by mulgara
> embedded Jetty can find them. That should get rid of the error and should
allow you to list the default set of descriptors.
>
> Best,
> X.
>
>
> On 10/9/07, Trina Myers <t.myers at bigpond.net.au> wrote:
> > Hi List,
> >
> > Just a quick newbie question. I have set up a Mulgara server on a
> > laptop
> and
> > am going through the tutorials for creating Descriptors. However I
> > am
> unable
> > to list the Descriptors available. From the descriptor management
> > page, after I have deployed the descriptor in Mulgara, I am unable
> > to invoke the Descriptors, I get a http error 500 in the browser and
> > the stack trace
> shows
> > the following:
> >
> > ERROR: 'Unrecognized XSLTC extension 'mulgaraDescriptor:descriptor''
> > 2007-10-09 15:25:02,125 ERROR Descriptor - Transformer failure:
> > java.lang.Runtim
> > eException: Unrecognized XSLTC extension 'mulgaraDescriptor:descriptor'
> > 2007-10-09 15:25:02,125 ERROR ? - Exception for
> > /webservices/descriptor/execute?
> >
> _self=http%3A%2F%2Flocalhost%3A8080%2Fwebservices%2Fdescriptor%2Fdescr
> iptors
> > %2Fd
> >
> efault%2FdescriptorListHTML.xsl&descriptorBase=http%3A%2F%2Flocalhost%
> 3A8080
> > %2Fw
> >
> ebservices%2Fdescriptor%2Fdescriptors%2F&model=rmi%3A%2F%2Flocalhost%2
> Fserve
> > r1%2
> > 3descriptors
> > org.mulgara.descriptor.DescriptorException: Transformer
> failure:
> > at
> org.mulgara.descriptor.Descriptor.process(Descriptor.java:646)
> > at
> > org.mulgara.descriptor.Descriptor.processToString
> (Descriptor.java:577
> > )
> > at
> >
> org.mulgara.descriptor.DescriptorServlet.doGet(DescriptorServlet.java
> > :495)
> > at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
> > at javax.servlet.http.HttpServlet.service
> (HttpServlet.java:853)
> > at
> >
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:354
> > )
> > at
> >
> org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicati
> > onHandler.java:294)
> > at
> >
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:5
> > 67)
> > at
> org.mortbay.http.HttpContext.handle(HttpContext.java:1808)
> > at
> > org.mortbay.jetty.servlet.WebApplicationContext.handle
> (WebApplication
> > Context.java:525)
> > at
> org.mortbay.http.HttpContext.handle(HttpContext.java:1758)
> > at
> org.mortbay.http.HttpServer.service(HttpServer.java:879)
> > at org.mortbay.http.HttpConnection.service
> (HttpConnection.java:790)
> > at
> >
> org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:952)
> > at
> org.mortbay.http.HttpConnection.handle(HttpConnection.java:807)
> > at
> > org.mortbay.http.SocketListener.handleConnection
> (SocketListener.java:
> > 197)
> > at
> org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:289)
> > at
> org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:501)
> > Caused by: javax.xml.transform.TransformerException :
> > java.lang.RuntimeException:
> > Unrecognized XSLTC extension 'mulgaraDescriptor:descriptor'
> > at
> >
> com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transfor
> > m(Unknown Source)
> > at
> >
> com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transfor
> > m(Unknown Source)
> > at
> org.mulgara.descriptor.Descriptor.process(Descriptor.java:638)
> > ... 17 more
> > Caused by: java.lang.RuntimeException : Unrecognized XSLTC extension
> > 'mulgaraDesc riptor:descriptor'
> > at
> >
> com.sun.org.apache.xalan.internal.xsltc.runtime.BasisLibrary.runTimeE
> > rror(Unknown Source)
> > at
> >
> com.sun.org.apache.xalan.internal.xsltc.runtime.BasisLibrary.runTimeE
> > rror(Unknown Source)
> > at
> >
> com.sun.org.apache.xalan.internal.xsltc.runtime.BasisLibrary.unsuppor
> > ted_ElementF(Unknown Source)
> > at
> >
> GregorSamsa.http$colon$$slash$$slash$www$dot$w3$dot$org$slash$1999$sl
> > ash$xhtml$colon$template$dot$0()
> > at GregorSamsa.applyTemplates()
> > at GregorSamsa.transform()
> > at
> >
> com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet.tran
> > sform(Unknown Source)
> > ... 20 more
> >
> > I have looked at the list archives and this error has come up in the
> > past but I couldn't find the solution?
> >
> > Any help would be appreciated
> > Cheers
> > Trina
> >
> > _______________________________________________
> > Mulgara-general mailing list
> > Mulgara-general at mulgara.org
> > http://mulgara.org/mailman/listinfo/mulgara-general
> >
>
>
>
> --
> Xavier Llorà
>
> Data-Intensive Technologies and Applications National Center for
> Supercomputing Applications University of Illinois at Urbana-Champaign
> 1205 W. Clark Street, Urbana IL 61801
>
> http://dita.ncsa.uiuc.edu/xllora
> _______________________________________________
> Mulgara-general mailing list
> Mulgara-general at mulgara.org
> http://mulgara.org/mailman/listinfo/mulgara-general
>
>
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