xmldb protocol in xsl stylesheets is not working

["Bröckelmann, Mathias" <MB...@ubis-ag.com>]

Hi,

I´m faced with a strange problem on using the xmldb protocol.

It is working perfektly when I use it in the sitemap as a source for the FileGenerator.
But it is not working in an stylesheet to pull a document out of a xmldb (Xindice) Database.

Stylesheet:

<xsl:stylesheet ...>
  ...
  <xsl:template match="foo">
    ...
    <xsl:copy-of select="document('xmldb:xindice:///db/test/news/documentkey')"/>
    ...
  </xsl:template
  ...
</xsl:stylesheet>

This is perfektly working if I use an other source that xmldb:...

The XML document is well formed and valid in the database.

The stacktrace i got is really long so i won´t post it at all but an excerpt:

>>>snip>>>
org.apache.avalon.framework.component.ComponentException: UnnamedSelector: ComponentSelector could not find the component for hint: xml
        at org.apache.avalon.excalibur.component.ExcaliburComponentSelector.select(ExcaliburComponentSelector.java:270)
        at org.apache.cocoon.sitemap.DefaultSitemapComponentSelector.select(DefaultSitemapComponentSelector.java:109)
        at org.apache.cocoon.components.source.AbstractSAXSource.getInputStream(AbstractSAXSource.java:125)
        at org.apache.cocoon.components.source.AbstractSAXSource.getInputSource(AbstractSAXSource.java:151)
        at org.apache.cocoon.components.xslt.XSLTProcessorImpl.resolve(XSLTProcessorImpl.java:459)
        at org.apache.xpath.SourceTreeManager.resolveURI(SourceTreeManager.java:184)
        at org.apache.xalan.templates.FuncDocument.getDoc(FuncDocument.java:278)
        at org.apache.xalan.templates.FuncDocument.execute(FuncDocument.java:235)
        at org.apache.xpath.XPath.execute(XPath.java:318)
        at org.apache.xalan.templates.ElemVariable.getValue(ElemVariable.java:311)
        at org.apache.xalan.templates.ElemVariable.execute(ElemVariable.java:282)
        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.templates.ElemLiteralResult.execute(ElemLiteralResult.java:710)
        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)
<<<snap<<<

I´m using cocoon 2.1 but this problem exists also in the latest stable release.

Thank you,

Mathias Broekelmann

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Re: xmldb protocol in xsl stylesheets is not working

[Michael Hartle <mh...@hartle-klug.com>]

Bröckelmann, Mathias wrote:

><xsl:stylesheet ...>
>  ...
>  <xsl:template match="foo">
>    ...
>    <xsl:copy-of select="document('xmldb:xindice:///db/test/news/documentkey')"/>
>    ...
>  </xsl:template
>  ...
></xsl:stylesheet>
>
Just a note: IIRC, using document() in an XSL stylesheet probably will 
result in caching problems, as the TraxTransformer only checks the 
modification date of the XSL file, but not the document()-wise 
referenced XML sources.

Just guessing, might it be that the URL in document() isn't being 
resolved with a SourceResolver ?

>I´m using cocoon 2.1 but this problem exists also in the latest stable release.
>
>Thank you,
>
>Mathias Broekelmann
>  
>
Best regards,

Michael Hartle,
Hartle & Klug GbR


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