Subject: RE: recursive sorting by element name -> Xalan Issue
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Thu, 29 Nov 2007 18:40:21 -0000
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> 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?
Yes. boolean(self::x) is true if the node is an x, false otherwise, Unary
minus converts that to a number and negates the number: so true becomes -1,
false becomes 0. You are then sorting that as a string, "-1" versus "0", and
the ordering these two strings depends on whether hyphens are considered
significant by the collating sequence in use. Xalan by default uses a
collating sequence in which hyphen is considered insignificant.
Change the sort to use data-type="number" and all should be well.
Michael Kay
http://www.saxonica.com/
>
> <?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/
> >
> >
>
>
>
> --
> Zeno Consulting, Inc.
> http://www.zenoconsulting.biz
> 248.894.4922 phone
> 313.884.2977 fax
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