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Subject: RE: [docbook-apps] trouble using FOP to process FO file generated by Xalan or Saxon

One follow-up comment about using Xerces XML parser (http://xerces.apache.org/xerces2-j/) with Saxon or Xalan. The latest version of Xerces (2.9.0) fully supports XML inclusions (XInclude), including XPointer syntax.

 

Regards,

Jeff Powanda

 

From: Jeff Powanda
Sent: Sunday, June 10, 2007 11:14 PM
To: 'fop-users@xmlgraphics.apache.org'; docbook-apps@lists.oasis-open.org
Subject: RE: [docbook-apps] trouble using FOP to process FO file generated by Xalan or Saxon

 

Thanks, Bob! I followed your instructions and can now process my documents with xsltproc, Saxon, or Xalan. I appreciate your help.

 

Regards,

Jeff Powanda

 

From: Bob Stayton [mailto:bobs@sagehill.net]
Sent: Saturday, June 09, 2007 7:36 PM
To: Jeff Powanda; docbook-apps@lists.oasis-open.org; fop-users@xmlgraphics.apache.org
Subject: Re: [docbook-apps] trouble using FOP to process FO file generated by Xalan or Saxon

 

Hi Jeff,

The XIncludes in your XML file are not resolving.  That leaves your book improperly stuctured, leading to improperly structured FO output.  You should have seen an error message from the stylesheet about not having a template that matches "xi:include".

 

You need to set up either Saxon or Xalan with a recent version of Xerces parser and with the XInclude option turned on.  See this section in my book:

 

 

Bob Stayton
Sagehill Enterprises
DocBook Consulting
bobs@sagehill.net

 

 

----- Original Message -----

From: Jeff Powanda

Sent: Saturday, June 09, 2007 5:34 PM

Subject: [docbook-apps] trouble using FOP to process FO file generated by Xalan or Saxon

 

I was using xsltproc as my XSLT processor, but it ran out of memory on a large book, so I decided to try Xalan and Saxon to convert a test book. I set up Xalan and Saxon according to the instructions in Bob Stayton’s book, DocBook XSL: The Definitive Guide (http://www.sagehill.net/docbookxsl/index.html). However, when I try to use FOP 0.93 to convert either of the attached FO files, it reports the following exception:

 

org.xml.sax.SAXParseException: Content is not allowed in prolog.

 

I pasted full output of the exception below.

 

Has anyone else experienced this problem? Please take a look at the attached FO files and tell me what’s wrong.

 

Regards,

Jeff Powanda

 

 

[Fatal Error] :1:1: Content is not allowed in prolog.

Jun 9, 2007 5:21:38 PM org.apache.fop.image.analyser.XMLReader createDocument

WARNING: Error while constructing image from XML

org.xml.sax.SAXParseException: Content is not allowed in prolog.

      at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)

      at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)

      at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:98)

      at org.apache.fop.image.analyser.XMLReader.createDocument(XMLReader.java:115)

      at org.apache.fop.image.analyser.XMLReader.loadImage(XMLReader.java:95)

      at org.apache.fop.image.analyser.XMLReader.verifySignature(XMLReader.java:65)

      at org.apache.fop.image.analyser.ImageReaderFactory.make(ImageReaderFactory.java:85)

      at org.apache.fop.image.ImageFactory.loadImage(ImageFactory.java:220)

      at org.apache.fop.image.ImageLoader.loadImage(ImageLoader.java:56)

      at org.apache.fop.image.ContextImageCache.getImage(ImageFactory.java:432)

      at org.apache.fop.image.ImageFactory.getImage(ImageFactory.java:157)

      at org.apache.fop.fo.flow.ExternalGraphic.bind(ExternalGraphic.java:68)

      at org.apache.fop.fo.FObj.processNode(FObj.java:118)

      at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.startElement(FOTreeBuilder.java:321)

      at org.apache.fop.fo.FOTreeBuilder.startElement(FOTreeBuilder.java:185)

      at org.apache.xalan.transformer.TransformerIdentityImpl.startElement(TransformerIdentityImpl.java:1072)

      at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)

      at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)

      at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)

      at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.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)

      at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:484)

      at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:165)

      at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)

      at org.apache.fop.cli.Main.startFOP(Main.java:160)

      at org.apache.fop.cli.Main.main(Main.java:191)

Jun 9, 2007 5:21:38 PM org.apache.fop.image.ImageFactory loadImage

SEVERE: Error while recovering image information () : null

java.lang.NullPointerException

      at org.apache.fop.image.analyser.XMLReader.verifySignature(XMLReader.java:66)

      at org.apache.fop.image.analyser.ImageReaderFactory.make(ImageReaderFactory.java:85)

      at org.apache.fop.image.ImageFactory.loadImage(ImageFactory.java:220)

      at org.apache.fop.image.ImageLoader.loadImage(ImageLoader.java:56)

      at org.apache.fop.image.ContextImageCache.getImage(ImageFactory.java:432)

      at org.apache.fop.image.ImageFactory.getImage(ImageFactory.java:157)

      at org.apache.fop.fo.flow.ExternalGraphic.bind(ExternalGraphic.java:68)

      at org.apache.fop.fo.FObj.processNode(FObj.java:118)

      at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.startElement(FOTreeBuilder.java:321)

      at org.apache.fop.fo.FOTreeBuilder.startElement(FOTreeBuilder.java:185)

      at org.apache.xalan.transformer.TransformerIdentityImpl.startElement(TransformerIdentityImpl.java:1072)

      at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)

      at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)

      at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)

      at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.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)

      at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:484)

      at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:165)

      at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)

      at org.apache.fop.cli.Main.startFOP(Main.java:160)

      at org.apache.fop.cli.Main.main(Main.java:191)

Jun 9, 2007 5:21:38 PM org.apache.fop.fo.flow.ExternalGraphic bind

SEVERE: Image not available: url()

Jun 9, 2007 5:21:39 PM org.apache.fop.cli.Main startFOP

SEVERE: Exception

javax.xml.transform.TransformerException: org.apache.fop.fo.ValidationException: file:///c:/docs/40SP/xml/other/indextest/IndexTest.fo:13:11234: Error(13/11234): fo:block is not a valid child element of fo:root.

      at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:168)

      at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)

      at org.apache.fop.cli.Main.startFOP(Main.java:160)

      at org.apache.fop.cli.Main.main(Main.java:191)

 

---------

 

javax.xml.transform.TransformerException: org.apache.fop.fo.ValidationException: file:///c:/docs/40SP/xml/other/indextest/IndexTest.fo:13:11234: Error(13/11234): fo:block is not a valid child element of fo:root.

      at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:501)

      at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:165)

      at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)

      at org.apache.fop.cli.Main.startFOP(Main.java:160)

      at org.apache.fop.cli.Main.main(Main.java:191)

Caused by: org.apache.fop.fo.ValidationException: file:///c:/docs/40SP/xml/other/indextest/IndexTest.fo:13:11234: Error(13/11234): fo:block is not a valid child element of fo:root.

      at org.apache.fop.fo.FONode.invalidChildError(FONode.java:393)

      at org.apache.fop.fo.FONode.invalidChildError(FONode.java:378)

      at org.apache.fop.fo.pagination.Root.validateChildNode(Root.java:127)

      at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.startElement(FOTreeBuilder.java:303)

      at org.apache.fop.fo.FOTreeBuilder.startElement(FOTreeBuilder.java:185)

      at org.apache.xalan.transformer.TransformerIdentityImpl.startElement(TransformerIdentityImpl.java:1072)

      at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)

      at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)

      at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.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)

      at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:484)

      ... 4 more

---------

org.apache.fop.fo.ValidationException: file:///c:/docs/40SP/xml/other/indextest/IndexTest.fo:13:11234: Error(13/11234): fo:block is not a valid child element of fo:root.

      at org.apache.fop.fo.FONode.invalidChildError(FONode.java:393)

      at org.apache.fop.fo.FONode.invalidChildError(FONode.java:378)

      at org.apache.fop.fo.pagination.Root.validateChildNode(Root.java:127)

      at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.startElement(FOTreeBuilder.java:303)

      at org.apache.fop.fo.FOTreeBuilder.startElement(FOTreeBuilder.java:185)

      at org.apache.xalan.transformer.TransformerIdentityImpl.startElement(TransformerIdentityImpl.java:1072)

      at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)

      at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)

      at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.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)

      at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:484)

      at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:165)

      at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)

      at org.apache.fop.cli.Main.startFOP(Main.java:160)

      at org.apache.fop.cli.Main.main(Main.java:191)

 

 

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