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From Matt Kynaston <m...@claritum.com>
Subject Re: FOP failing to transform XSL to PDF with image when run in tomcat/osgi, but working when run in standalone
Date Mon, 24 Nov 2014 22:17:35 GMT
Yeah, ditto that. Mind you, we're also using fop-pdf-images.

I'd review what jars are actually being loaded - this sounds like a
mismatch somewhere.

Ah, java. Run once, run... once.

Matt


On 24 November 2014 at 20:54, Terence M. Bandoian <terence@tmbsw.com> wrote:

> Hi, Iain-
>
> This may not help much but I've been able to successfully use
> fo:external-graphic in FOP 1.0 on Tomcat 6 and Tomcat 7.  The images were
> JPEG and OSGI was not used.
>
> -Terence Bandoian
>
>
>
> On 11/24/2014 9:53 AM, Iain Soedring wrote:
>
>> Hi,
>>
>> I have an xsl file that includes an external image:
>>
>> <fo:external-graphic src="/images/BrandGraphic.PNG"/>
>>
>> When running as a standalone Java application the transformer.transform
>> function works, and I get a valid PDF file.
>>
>> When running in Tomcat/OSGI, on the same server (same JRE), I get the
>> following error:
>>
>> FATAL ERROR:  'java.lang.IllegalArgumentException: Unknown function:
>> gatherContextInfo'
>>            :Unknown function: gatherContextInfo
>>
>> If I remove the image from the XSL, everything works.
>>
>> I checked in the fop 1.0 source, and see that this comes from
>>
>> org.apache.fop.util.text.AdvancedMessageFormat
>>
>>         public FunctionPart(String functionName) {
>> this.function = getFunction(functionName);
>> if (this.function == null) {
>>     throw new IllegalArgumentException("Unknown function: " +
>> functionName);
>> }
>>         }
>>
>> Unfortunately no stack trace is output when catching this exception, and
>> tracing back through the code I can see various places from where this
>> could have got called.
>>
>> the 'gatherContextInfo' function itself is in
>> org.apache.fop.fo.FONode.java, and is overridden in sub-classes.
>>
>> On the class-loading side, I've verified that the same jars are loaded in
>> both tomcat and standalone.  The following are the ones that I find are
>> essential for my transform to work:
>>
>> avalon, batik, commons-io, commons-logging, xmlgraphics.
>>
>> On tomcat there are many more libraries loaded, but the only overlap I
>> can see is commons-logging, where my war file already uses a different
>> version of this.
>>
>> I have asked the same question on stackoverflow:
>> https://stackoverflow.com/questions/27066409/apachefop-
>> tomcat-osgi-error-java-lang-illegalargumentexception-unknown-functio,
>> but I haven't get much response beyond what I'd already looked at so far.
>>
>> One other issue I found running FOP in Tomcat/OSGI, was the need to
>> override the PDF renderer, with this code:
>>
>>       FOUserAgent useragent = fopFactory.newFOUserAgent();
>>       PDFRenderer pdfrenderer = new PDFRenderer();
>>       pdfrenderer.setUserAgent(useragent);
>>       useragent.setRendererOverride(pdfrenderer);
>>
>>       fopFactory.addElementMapping(new FOElementMapping());
>> ...
>> Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, useragent, out);
>>
>> otherwise the code would fail with:
>>
>>  Caused by: java.lang.UnsupportedOperationException: Don't know how to
>> handle "application/pdf" as an output format. Neither an FOEventHandler,
>> nor a Renderer could be found for this output format.
>>         at org.apache.fop.render.RendererFactory.createFOEventHandler(RendererFactory.java:360)
>>
>>
>>
>> Does anyone have any idea what could be going wrong here?
>>
>> Best Regards,
>>
>> Iain
>> Unless stated otherwise above:
>> IBM United Kingdom Limited - Registered in England and Wales with number
>> 741598.
>> Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU
>>
>
>
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