The logic is basically:
allocate a grouping key which is effectively:
* for figure elements, a unique key
* for everything else, the local name of the element
then put adjacent elements with the same grouping key into the same group.
Perhaps it would be clearer to write
group-adjacent="if (self::figure) then generate-id() else local-name()"
-- the effect would be the same.
Michael Kay
Saxonica
On 28 Mar 2018, at 17:14, Rick Quatro rick(_at_)rickquatro(_dot_)com
<xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
My general intent is to group on figure elements. All consecutive siblings
that aren't <figure>s (<para> or otherwise) should be in their own group.
Michael's solution works, but I am having trouble getting my head around the
logic. Thank you Martin and Michael for the quick replies.
Rick
-----Original Message-----
From: Martin Honnen martin(_dot_)honnen(_at_)gmx(_dot_)de
<xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com>
Sent: Wednesday, March 28, 2018 12:01 PM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: Re: [xsl] for-each-group
On 28.03.2018 17:53, Rick Quatro rick(_at_)rickquatro(_dot_)com wrote:
I have a <step> element that looks something like this:
<steps>
<step>
<para>Intro stuff</para>
<para>More intro stuff</para>
<figure/>
<figure/>
<para>Conclusion stuff</para>
<para>More conclusion stuff</para>
</step>
</steps>
I want 4 separate groups:
1) First two <para> elements.
2) First <figure>
3) Second <figure>
4) Last two <para> elements.
Can you explain the rules for that result, do you want to group any adjacent
"para" element into one group but keep each "figure" element in its own
group?
In that case you can use
<xsl:for-each-group select="*" group-adjacent="boolean(self::para)">
<xsl:choose>
<xsl:when test="current-grouping-key()">
<group>
<xsl:apply-templates select="current-group()"/>
</group>
</xsl:when>
<xsl:otherwise>
<xsl:for-each select="current-group()">
<group>
<xsl:apply-templates select="."/>
</group>
</xsl:for-each>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each-group>
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