Need working example or help how to use PDF/A-1b with FOP 0.93

[Virginijus Kandrotas]

I am looking for help how to use PDF/A-1b. Does anybody have working example
? I need example input XML fo file and FOP configuration / font embedding.

Best regards,

Virginijus Kandrotas

[Jeremias Maerki]

Make sure you follow the instructions here:
http://xmlgraphics.apache.org/fop/0.93/pdfa.html

I've uploaded an example for you:
http://people.apache.org/~jeremias/pdfa-example.zip

(you just have to copy arial.ttf in the same directory. Omitted in the
ZIP for legal reasons.)

HTH

Post by Virginijus Kandrotas
I am looking for help how to use PDF/A-1b. Does anybody have working example
? I need example input XML fo file and FOP configuration / font embedding.

Jeremias Maerki

[Virginijus Kandrotas]

Hello Jeremias,

Thank you for your help and the example you have attached, but it still not
working for me. I think there is some problems with the FOP configuration. I
getting this error:

org.apache.fop.pdf.PDFConformanceException: For PDF/A-1b, all fonts, even
the base 14 fonts, have to be embedded! Offending font: Times-Roman
at org.apache.fop.pdf.PDFFont.validate(PDFFont.java:199)
at org.apache.fop.pdf.PDFFont.toPDFString(PDFFont.java:210)
at org.apache.fop.pdf.PDFObject.toPDF(PDFObject.java:164)
at org.apache.fop.pdf.PDFObject.output(PDFObject.java:153)
at org.apache.fop.pdf.PDFDocument.output(PDFDocument.java:831)
at org.apache.fop.pdf.PDFDocument.outputTrailer(PDFDocument.java:896)
at org.apache.fop.render.pdf.PDFRenderer.stopRenderer(PDFRenderer.java:483)
at
org.apache.fop.area.RenderPagesModel.endDocument(RenderPagesModel.java:241)
at
org.apache.fop.area.AreaTreeHandler.endDocument(AreaTreeHandler.java:426)
at org.apache.fop.fo.FOTreeBuilder.endDocument(FOTreeBuilder.java:171)
at
org.apache.xalan.transformer.TransformerIdentityImpl.endDocument(TransformerIdentityImpl.java:962)
at org.apache.xerces.parsers.AbstractSAXParser.endDocument(Unknown Source)
at org.apache.xerces.impl.XMLDocumentScannerImpl.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.load(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.skipSpaces(Unknown Source)
at
org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown
Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)

Can you please look at my code maybe you can see what is wrong ?

FopFactory fopFactory = FopFactory.newInstance();

File configFile = new
File("/home/vk/a-tests/fop/exampl/fop.xconf");
fopFactory.setUserConfig(configFile);

FOUserAgent foUserAgent = fopFactory.newFOUserAgent();
foUserAgent.getRendererOptions().put("pdf-a-mode",
"PDF/A-1b");

PDFRenderer pdfrenderer = new PDFRenderer();
pdfrenderer.setUserAgent(foUserAgent);

foUserAgent.setRendererOverride(pdfrenderer);


// Construct fop with desired output format
Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF,
foUserAgent, outputMessages[0]);

fopFactory.addElementMapping(new FOElementMapping());
fopFactory.addElementMapping(new SVGElementMapping());
fopFactory.addElementMapping(new
BatikExtensionElementMapping());
fopFactory.addElementMapping(new
ExtensionElementMapping());
fopFactory.addElementMapping(new XMPElementMapping());
fopFactory.addElementMapping(new RDFElementMapping());
fopFactory.addElementMapping(new
PSExtensionElementMapping());

// Setup JAXP using identity transformer
TransformerFactory factory =
TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer(); //
identity transformer

// Setup input stream
Source src = new StreamSource(inputMessages[0]);

// Resulting SAX events (the generated FO) must be piped
through to FOP
Result res = new SAXResult(fop.getDefaultHandler());

// Start XSLT transformation and FOP processing
transformer.transform(src, res);


Thank you in advance,

Virginijus Kandrotas

[Jeremias Maerki]

This means you are still somehow referencing one of the base 14 fonts.
Even if you use Times-Roman, you have to explicitely define this font in
the configuration for PDF/A (as if it were a custom font) even though
it's normally available for use for non-PDF/A documents. The
specification requires that ALL fonts are embedded. And that's not the
case with the normal base 14 fonts.

It's a good idea to set "font-family" to your main font you're using in
your documents and to set this property top-level directly on fo:root.
This is what I've done in the example. That way no default value for
font-family can creep in anywhere. Of course, you also have to make sure
that you can an entry in the FOP configuration for every font that you
use in your documents.

Your Java code looks good, but see my question below (not related to the
problem here).

Post by Virginijus Kandrotas
Hello Jeremias,
Thank you for your help and the example you have attached, but it still not
working for me. I think there is some problems with the FOP configuration. I
org.apache.fop.pdf.PDFConformanceException: For PDF/A-1b, all fonts, even
the base 14 fonts, have to be embedded! Offending font: Times-Roman
at org.apache.fop.pdf.PDFFont.validate(PDFFont.java:199)

<snip/>

Post by Virginijus Kandrotas
Can you please look at my code maybe you can see what is wrong ?
FopFactory fopFactory = FopFactory.newInstance();
File configFile = new
File("/home/vk/a-tests/fop/exampl/fop.xconf");
fopFactory.setUserConfig(configFile);
FOUserAgent foUserAgent = fopFactory.newFOUserAgent();
foUserAgent.getRendererOptions().put("pdf-a-mode",
"PDF/A-1b");
PDFRenderer pdfrenderer = new PDFRenderer();
pdfrenderer.setUserAgent(foUserAgent);
foUserAgent.setRendererOverride(pdfrenderer);
// Construct fop with desired output format
Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF,
foUserAgent, outputMessages[0]);
fopFactory.addElementMapping(new FOElementMapping());
fopFactory.addElementMapping(new SVGElementMapping());
fopFactory.addElementMapping(new
BatikExtensionElementMapping());
fopFactory.addElementMapping(new
ExtensionElementMapping());
fopFactory.addElementMapping(new XMPElementMapping());
fopFactory.addElementMapping(new RDFElementMapping());
fopFactory.addElementMapping(new
PSExtensionElementMapping());

Why are you doing this? Didn't it work otherwise? Strange environment
(application server)???

Post by Virginijus Kandrotas
// Setup JAXP using identity transformer
TransformerFactory factory =
TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer(); //
identity transformer
// Setup input stream
Source src = new StreamSource(inputMessages[0]);
// Resulting SAX events (the generated FO) must be piped
through to FOP
Result res = new SAXResult(fop.getDefaultHandler());
// Start XSLT transformation and FOP processing
transformer.transform(src, res);
Thank you in advance,
Virginijus Kandrotas
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Jeremias Maerki

[Virginijus Kandrotas]

I just try to run your example (pdfa-example.fo), have no extra references
to the fonts defined.

regards,

Virginijus Kandrotas

[Jeremias Maerki]

Does that mean you can't run my example? You get an error about
"Times-Roman" with pdfa-example.fo? If yes, that's really weird.

I simply did this on the command-line:
fop -c fop.xconf -fo pdfa-example.fo -pdfa1b pdfa-example.pdf

Have you tried it from the command-line?

Post by Virginijus Kandrotas
I just try to run your example (pdfa-example.fo), have no extra references
to the fonts defined.
regards,
Virginijus Kandrotas

Jeremias Maerki

[Virginijus Kandrotas]

yes exactly I can not run your example using my embedded code as I already
posted. It seems that in embedded code configuration file is not read or
not set to fo userAgent. I'm getting in log this warning “WARN [FontInfo]
Font 'Arial,normal,400' not found. Substituting with 'any,normal,400'.”.

On command line it works without problem.

regards,

Virginijus Kandrotas

Post by Jeremias Maerki
Does that mean you can't run my example? You get an error about
"Times-Roman" with pdfa-example.fo? If yes, that's really weird.
fop -c fop.xconf -fo pdfa-example.fo -pdfa1b pdfa-example.pdf
Have you tried it from the command-line?

Post by Virginijus Kandrotas
I just try to run your example (pdfa-example.fo), have no extra references
to the fonts defined.
regards,
Virginijus Kandrotas

Jeremias Maerki
---------------------------------------------------------------------

[Jeremias Maerki]

I should have looked more closely at your code. You instantiate the
PDFRenderer yourself, probably for the same reason that you set the
ElementMappings yourself. I'd really like to know the reason why you
think you need to do that. Why did Service discovery not work for you?

Anyway, the problem is as follows: After instantiating the renderer
yourself, you don't configure it (calling its configure(Configuration)
method). That's why it doesn't have any font configuration. If you use
setRendererOverride, you have to do everything (!) yourself.

I'd suggest you figure out how you can use the normal Service discovery
and switch back to the normal usage patterns as explained on the FOP
website.

Post by Virginijus Kandrotas
yes exactly I can not run your example using my embedded code as I already
posted. It seems that in embedded code configuration file is not read or
not set to fo userAgent. I'm getting in log this warning “WARN [FontInfo]
Font 'Arial,normal,400' not found. Substituting with 'any,normal,400'.”.
On command line it works without problem.
regards,
Virginijus Kandrotas

Post by Jeremias Maerki
Does that mean you can't run my example? You get an error about
"Times-Roman" with pdfa-example.fo? If yes, that's really weird.
fop -c fop.xconf -fo pdfa-example.fo -pdfa1b pdfa-example.pdf
Have you tried it from the command-line?

Post by Virginijus Kandrotas
I just try to run your example (pdfa-example.fo), have no extra references
to the fonts defined.
regards,
Virginijus Kandrotas

Jeremias Maerki

[Virginijus Kandrotas]

I have already solved my problem. You right – the instantiation of the
PDFRenderer was the reason why my custom configuration was not read and
used in the renderer. I have used this method because of following error:
“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”. I have
found in the FOP mailing list that I can solve this error using
“setRendererOverride” method. But actually this was not a right solution.
The real problem was missing text files under the META-INF/Services
directory. I have forgotten to copy the in my environment. I found this
notice in your post by
http://mail-archives.apache.org/mod_mbox/xmlgraphics-fop-users/200605.mbox/%***@jeremias-maerki.ch%3E
apache mailing archive .

Thank you for your help

Virginijus Kandrotas