Am 21.10.2020 um 17:57 schrieb Christoph Naber
pentium120mhz(_at_)gmail(_dot_)com:
The group-wrap should be performed for sequences of <points> of @type =
'1'. <Points> of other types and completeley other nodes should not be
grouped.
Another approach not using grouping with for-each-group is trying to key
on the generated id of the first node in the group; usually that leads
to patterns that make my head spin but so did your original code:
<?xml version="1.0" encoding="UTF-8"?>
<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:key name="point-group"
match="point[@type = 1 and
preceding-sibling::*[1][self::point[@type = 1]]]"
use="generate-id(preceding-sibling::point[@type =
1][not(preceding-sibling::*[1][self::point[@type = 1]])][1])"/>
<xsl:mode on-no-match="shallow-copy"/>
<xsl:output method="xml" indent="yes"/>
<xsl:template match="point[@type =
1][not(preceding-sibling::*[1][self::point[@type = 1]])]">
<group>
<xsl:copy-of select="., key('point-group', generate-id())"/>
</group>
</xsl:template>
<xsl:template match="point[@type = 1 and
preceding-sibling::*[1][self::point[@type = 1]]]"/>
</xsl:stylesheet>
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