Rick,
This will solve your problem using xsl version 2 using 2
for-each-groups.
Almost close, with the exception of the problem in this snippet:
<xsl:copy>
<xsl:attribute name="rev"
select="'changed'"/>
<xsl:value-of select="."/>
</xsl:copy>
The result of running the proposed solution contains:
<note rev="changed">
Content
</note>
But what Rick requires is:
<note rev="changed">
<para>Content</para>
</note>
Cheers,
Dimitre
On Wed, Oct 23, 2019 at 6:47 PM Terry Badger terry_badger(_at_)yahoo(_dot_)com <
xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
Rick,
This will solve your problem using xsl version 2 using 2 for-each-groups.
<?xml version="1.0" encoding="UTF-8"?>
<!-- Terry Badger 2019-10-23 -->
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xs="http://www.w3.org/2001/XMLSchema"; exclude-result-prefixes="xs"
version="2.0">
<xsl:template match="/root">
<xsl:copy>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>
<xsl:template match="topic">
<xsl:copy>
<xsl:copy-of select="@*"/>
<xsl:for-each-group select="*" group-starting-with="revst">
<xsl:for-each-group select="current-group()"
group-ending-with="revend">
<xsl:choose>
<xsl:when test="current-group()/self::*[name() =
'revst']">
<xsl:for-each select="current-group()[name()
!= 'revst'][name() != 'revend']">
<xsl:copy>
<xsl:attribute name="rev"
select="'changed'"/>
<xsl:value-of select="."/>
</xsl:copy>
</xsl:for-each>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="current-group()"/>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each-group>
</xsl:for-each-group>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
Terry
On Wednesday, October 23, 2019, 03:57:18 AM EDT, Martin Honnen
martin(_dot_)honnen(_at_)gmx(_dot_)de
<xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
Am 22.10.2019 um 21:10 schrieb Martin Honnen
martin(_dot_)honnen(_at_)gmx(_dot_)de:
On 22.10.2019 20:41, Martin Honnen martin(_dot_)honnen(_at_)gmx(_dot_)de
wrote:
On 22.10.2019 20:07, Rick Quatro rick(_at_)rickquatro(_dot_)com wrote:
I am using XSLT 2 and think this may require a for-each-group solution.
Any advice would be appreciated. Thank you very much.
Thinking about it again, it seems in XSLT 3 simply using an accumulator
makes it even more easy and compact:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xs="http://www.w3.org/2001/XMLSchema";
exclude-result-prefixes="#all"
version="3.0">
<xsl:mode on-no-match="shallow-copy" streamable="yes"
use-accumulators="rev-change"/>
<xsl:accumulator name="rev-change" as="xs:boolean"
initial-value="false()" streamable="yes">
<xsl:accumulator-rule match="topic" select="false()"/>
<xsl:accumulator-rule match="topic/revst" select="true()"/>
<xsl:accumulator-rule match="topic/revend" select="false()"/>
</xsl:accumulator>
<xsl:template match="topic/*[accumulator-before('rev-change')]">
<xsl:copy>
<xsl:attribute name="rev">changed</xsl:attribute>
<xsl:apply-templates select="@*"/>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>
<xsl:template match="revst | revend" priority="2"/>
</xsl:stylesheet>
Saxon EE however doesn't like it for streaming and crashes
Michael Kay has already identified the problem with streaming in above
code, using
<xsl:template
match="topic/*[boolean(accumulator-before('rev-change'))]">
fixes it.
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