For posterty's sake, here's the full stacktrace:

java.lang.NullPointerException
        at org.apache.fop.fo.pagination.PageSequence.<init>(PageSequence.java:144)
        at org.apache.fop.fo.pagination.PageSequence$Maker.make(PageSequence.java:43)
        at org.apache.fop.fo.FOTreeBuilder.startElement(FOTreeBuilder.java:261)
        at 
org.apache.xalan.transformer.ResultTreeHandler.flushElem(ResultTreeHandler.java:858)
        at 
org.apache.xalan.transformer.ResultTreeHandler.flushPending(ResultTreeHandler.java:952)
        at 
org.apache.xalan.transformer.ResultTreeHandler.endElement(ResultTreeHandler.java:306)
        at 
org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:716)
        at 
org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:422)
        at 
org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:226)
        at 
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2243)
        at 
org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2069)
        at 
org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1171)
        at 
org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:634)
        at 
org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1088)
        at 
org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1066)
        at com.banklink.ilink.Renderer.transformXML(Renderer.java:230)
        at com.banklink.ilink.Renderer.Render(Renderer.java:135)
        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:324)
        at org.apache.soap.server.RPCRouter.invoke(RPCRouter.java:146)
        at org.apache.soap.providers.RPCJavaProvider.invoke(RPCJavaProvider.java:129)
        at 
org.apache.soap.server.http.RPCRouterServlet.doPost(RPCRouterServlet.java:287)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at 
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at 
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
        at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at 
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1012)
        at 
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107)
        at java.lang.Thread.run(Thread.java:536)

If anything, this is makes for good Google keyword searching.

On Fri, Mar 22, 2002 at 05:59:26PM +0100, Jeremias Maerki wrote:
> > I was just looking at the FOP API JavaDocs.  Can I use getContentHanlder from the 
>Driver object, send that
> > into the transformer wrapped in a SAXResults object?  Will this populate FOP with 
>the required data to do
> > the XSL:FO transform?
> 
> You got it!!!!! That's just what I was about to suggest.
> 
> > On Fri, Mar 22, 2002 at 11:22:12AM -0500, David B. Bitton wrote:
> > > 1000/N
> > > Status: O
> > > X-Status: 
> > > X-Keywords:                  
> > > X-UID: 600
> > > 
> > > Ok this is what I'm doing:
> > > 
> > > I produce an XML file from data stored on a mainframe.  The XML is generate in a 
>VB object.  The XML is
> > > passed up to an ASP page that makes a Low Level API SOAP call, using MSSOAP 
>Toolkit 2.0,  to my PDF server.
> > > The PDF server is running Tomcat 4/Apache SOAP 2.2.
> 
> Concerning Apache SOAP 2.2: You might want to have a look at Axis
> (http://xml.apache.org/axis) which is a floolow-on for SOAP 2.2. I think
> I heard once that it is based on SAX rather than DOM. Haven't tested it,
> though.
> 
> > > 
> > > On the PDF server, I receive the XML as literalxml in the envelope, fetch a 
>stylesheet, pass the Element
> > > object to a Xalan 2.3 transformer (wrapped in a DOMSource object), and then 
>transform the XML into XSL:FO
> > > objects.  
> > > 
> > > Now I have a Document object that was returned from the transformer wrapped in a 
>DOMResults object.  The
> > > next step is where the problem lies.  I want to pass the Document to a Driver, 
>but I get the dreaded
> > > NullPointerException.
> > > 
> > > Most of the time, the XML is will be small ( 5 - 7K), but there is a potention 
>for an account to have 5 to
> > > 10 thousand transactions in a day, and we store up to 63 days of data (a single 
>transaction in XML is 594
> > > bytes, therefore a 630K transaction XML file would be 374MB, plus some extra 
>data at the top).  So you can
> > > see what I have the potential to deal with.
> > > 
> > > What I don't even know is how FOP will handle this.  The XSL:FO file is sure to 
>be much larger than 380MB.
> > > I transformer a 6.66KB XML file and it produced a XSL:FO file of 16.2KB.  If we 
>use that as a benchmark,
> > > than the same 374MB would become 909.8MB.  That's a whole lot of RAM, not to 
>mention what FOP is going to
> > > use to store the rendered PDF.
> 
> I hope you will be lucky. Some have reported that big documents work
> well. Others were not so lucky. As long as there are not many references
> in your documents you should get quite far. You can browse the archives.
> There has been a number of discussions on this topic.
> 
> > > I'm hoping that someone can poke a hole in these numbers (please), because this 
>is getting to look a whole
> > > lot bigger than expected.  Obviously performance and resource utilization are 
>major concernes (like when are
> > > they not?).  Obviously SAX for this would be faster because it wouldn't require 
>loading the entire XML
> > > contents into memory.
> > > 
> > > So, now is here the questions come in.  Do I return from the transform a 
>SAXResults?  Also, how do I
> > > effectively handle the incoming XML into the SOAP method?  I would prefer to 
>send the XML in literalxml
> > > format so the < and > are HTML encoded (increasing the size of the content even 
>more).
> > > 
> > > Where do I go from here?
> > > 
> > > 
> > > On Fri, Mar 22, 2002 at 04:49:40PM +0100, Jeremias Maerki wrote:
> > > > <comment>Oops, that one didn't make it to the list at first.</comment>
> > > > 
> > > > DOM (Document) should work. But using DOM to process a 400MB XML? You
> > > > wouldn't want to do that. Try to find a way to use SAX. You can fill SAX
> > > > events into FOP to create the FO tree. Maybe it helps us to provide you
> > > > with some pointers and ideas if you tell us what exactly you're trying
> > > > to do.
> > > > 
> > > > >       I'm sorry to post this again but I need help.  Does passing a Document 
>datatype to the Driver
> > > > > render() method work?  I have to potential to move XML files in excess of 
>400MB and so I need to avoid as
> > > > > moving of data in memory as possible.
> 
> Cheers,
> Jeremias M?rki
> 
> mailto:[EMAIL PROTECTED]
> 
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> 
> 
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-- 

David B. Bitton
[EMAIL PROTECTED]

Diversa ab illis virtute valemus.

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