Subject: Re: recursive sorting by element name -> Xalan Issue
From: "Davis Ford" <davisford@xxxxxxxxx>
Date: Thu, 29 Nov 2007 13:15:56 -0500
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Hi Michael, thanks for clearing that up. I am *almost* there now,
with the current incarnation of the stylesheet (below).
The only remaining issue I have appears to be with Xalan. When I
serialize out a collection with JAXB, and apply the stylesheet (using
code posted previously), it sorts everything and I have no missing
attributes, except the DictionaryModelDescriptor node is now at the
bottom of the file instead of the top. When I run with xsltproc on
mac/linux it places it at the top.
Any idea why I get this behavior?
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xalan="http://xml.apache.org/xslt" >
<!-- The xalan param gets back indentation that seems to be broken
in the java api -->
<xsl:output method="xml" indent="yes" encoding="UTF-8"
xalan:indent-amount="4"/>
<xsl:strip-space elements="*" />
<xsl:template match="/">
<xsl:apply-templates />
</xsl:template>
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:copy-of select="@*"/>
<!-- copy all attributes before applying templates to children only -->
<xsl:apply-templates select="node()">
<xsl:sort select="- boolean(self::DictionaryModelDescriptor)"/>
<xsl:sort select="@typeName"/>
<xsl:sort select="name(.)"/>
<xsl:sort />
</xsl:apply-templates>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
On Nov 29, 2007 12:46 PM, Michael Kay <mike@xxxxxxxxxxxx> wrote:
> > >
> > >I am running into some issues / inconsistencies running this
> > >transformation on command line vs. within java vs. which
> > platform I run
> > >it on. I'm hoping the list might have some pointers on how
> > to resolve his.
>
> > <xsl:template match="@*|node()">
> > <xsl:copy>
> > <xsl:apply-templates select="@*|node()">
> > <xsl:sort select="@typeName"/>
> > <xsl:sort select="name(.)"/>
> > <xsl:sort />
> > </xsl:apply-templates>
> > </xsl:copy>
> > </xsl:template>
>
> This code may have the effect of sorting child elements before attributes
> (specifically a child element with no typeName attribute whose name
> alphabetically precedes the attribute names). You aren't allowed to create
> attributes for an element after creating child elements. In XSLT 1.0 the
> processor has the option of ignoring the error by discarding the offending
> attributes.
>
> > >When I run this on Ubuntu Linux 7.10 (fully updated) using
> > xsltproc, I
> > >encounter this bug:
> > >
> > >https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/147144
> > >
> > >Namely, it reports the error:
> > >
> > >runtime error: file SortCollections.xsl line 40 element copy
> > Attribute
> > >nodes must be added before any child nodes to an element.
>
> That doesn't look like a bug to me, it looks like correct behaviour.
>
> > >
> > >When I run this on Mac OS X 1.5 (Leopard -- fully updated) using
> > >xsltproc, it does exactly what I want with no problems.
>
> That looks like a bug to me.
>
> > >
> > >When I run this script from Java 1.6 (using JAXB) with the
> > code below,
> > >the identity transform does not copy all the attributes over.
> > >I end up with missing attributes, and I have no idea why.
>
> Xalan is apparently choosing the option to ignore the error and discard the
> attributes.
>
> Michael Kay
> http://www.saxonica.com/
>
>
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