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From Torsten Curdt <tcu...@dff.st>
Subject Re: XSLTC and Cocoon
Date Tue, 21 May 2002 18:05:38 GMT
On Tuesday 21 May 2002 18:13, Stefano Mazzocchi wrote:
> Tom,
>
> first of all, thanks much for helping us with this. It is *very*
> appreciated.
>
> Tom Amiro wrote:
> > Hi,
> >
> > After modifying ./documentation/stylesheets/book2menu.xsl so XSLTC
> > could compile it, I got to the next problem, which doesn't appear
> > to be XSLTC related.
>
> Ok, let's see.
>
> > After bringing up the http://localhost:8080/cocoon and clicking on
> > the Documentation link, it throws
> >
> >    java.lang.NullPointerException
> >         at
> > org.apache.cocoon.components.notification.DefaultNotifyingBuilder.build(D
> >efaultNotifyingBuilder.java:111) at
> > org.apache.cocoon.components.notification.DefaultNotifyingBuilder.build(D
> >efaultNotifyingBuilder.java:170) at
> > org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1083)
> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at
> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applicat
> >ionFilterChain.java:247) at
> > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilte
> >rChain.java:193)
> >
> > The error happens in a block that traps a SAXParserException on the
> > following line of code
> >
> > 	n.addExtraDescription("location",     sourceLocator.getSystemId());
> >
> > What do you suggest you/we do to get further?
>
> Hmmm, the source code says
>
>    if( null != sourceLocator )
>    {
>      n.addExtraDescription("location", sourceLocator.getSystemId());
>      ...
>    }
>
> so the NPE doesn't come from sourceLocator being null. Also, if
> getSystemId() returns null, the method is
>
>    public void addExtraDescription(String extraDescriptionDescription,
>            String extraDescription) {
>      this.extraDescriptions.put(extraDescriptionDescription,
> extraDescription);
>    }
>
> where "extraDescriptions" is a HashMap, so it's entirely legal to have
> null values there.
>
> I'm puzzled.
>
> Do you people at cocoon-dev have any idea?

just a quick guess... maybe "n" itself is null?
--
Torsten

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