Re: [docbook-apps] saxon, xerces, xinclude, and DB5 (was Re: [docbook-apps] trouble using FOP to process FO file generated by Xalan or Saxon)

George Cristian Bina Tue, 12 Jun 2007 08:07:04 -0700

Dear Camille,

I reported the problem on Xerces Jira some time ago, see it logged here:
https://issues.apache.org/jira/browse/XERCESJ-1113

I provided also a patch in the above report that works around theproblem (and that we use in oXygen to make that work).


Best Regards,
George
---------------------------------------------------------------------
George Cristian Bina - http://aboutxml.blogspot.com/
<oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger
http://www.oxygenxml.com


Camille Bégnis wrote:

Hi all,

funny I'm struggling with similar issue.

I did set up saxon to use Xerces 2.9.0 and while full inclusions like

  <xi:include href="Inserted.xml"/>

works, referencing an id with

  <xi:include href="Inserted.xml" xpointer="para"/>

doesn't work:

---------------------------------------------------------------------
Recoverable error
org.xml.sax.SAXParseException: Include operation failed, reverting to
fallback. Resource error reading file as XML (href='Inserted.xml').
Reason: XPointer resolution unsuccessful.
Error on line 8 column 52 of file:////home/camille/test/master.xml:
  Error reported by XML parser: An 'include' failed, and no 'fallback'
element was found.
Transformation failed: Failed to parse stylesheet
---------------------------------------------------------------------

This is with docbook 5 RNG. With Docbook 4 DTD it works.

I suspect this is because the parser has no way to know the "xml:id"
attribute is actually of ID type, while with DocBOok 4 it has the DTD to
learn thatthe "id" attribute is an ID.

Anyone succeeded using xinclude with xpointer="id" with DB5 RNG?

Camille.



Jeff Powanda a écrit :

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:* '[EMAIL PROTECTED]'; [email protected]
*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:[EMAIL PROTECTED]
*Sent:* Saturday, June 09, 2007 7:36 PM
*To:* Jeff Powanda; [email protected];
[EMAIL PROTECTED]
*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:

http://www.sagehill.net/docbookxsl/Xinclude.html#JavaXIncludes

Bob Stayton
Sagehill Enterprises
DocBook Consulting
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>

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

    *From:* Jeff Powanda <mailto:[EMAIL PROTECTED]>

    *To:* [email protected]
    <mailto:[email protected]> ;
    [EMAIL PROTECTED]
    <mailto:[EMAIL PROTECTED]>

    *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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Re: [docbook-apps] saxon, xerces, xinclude, and DB5 (was Re: [docbook-apps] trouble using FOP to process FO file generated by Xalan or Saxon)

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