Re: [xsl] Is this a grouping task?

["Terry Badger terry_badger@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

 B  B B B  B B B  B B B  B B B  B B B  B B B  B B B  B B B  B  B B  B B B 
B B B  B B B  B B B  B B B  B B B  B B B  B B B  B  B B  B B B  B B B  B B B 
B B B  B B B  B B B  B B B  B B B  B B B  B  B B  B B B  B B B  B B B  B B B 
B B B  B B B  B B B  B B B  B  B B  B B B  B B B  B B B  Dimitre,
Thank you for the catch. This should do it.B B B B  B B B  B B B  B B B 
B B B  B B B  B  B B  B 
<xsl:copy>
B B B  <xsl:attribute name="rev" select="'changed'"/>
B B B  <xsl:for-each select="./node()">
B B  B B B B  <xsl:copy-of select="."/>
B B B  </xsl:for-each>
B </xsl:copy>
Terry Badger


On Wednesday, October 23, 2019, 10:05:39 PM EDT, Dimitre Novatchev
dnovatchev@xxxxxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:





> Rick,
> This will solve your problem using xsl version 2 using 2
for-each-groups.B B 

Almost close, with the exception of the problem in this snippet:

>B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  <xsl:copy>
>B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  <xsl:attribute
name="rev" select="'changed'"/>
>B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  <xsl:value-of
select="."/>
>B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  </xsl:copy>

The result of running the proposed solution contains:

B  <note rev="changed">
B  B  B  Content
B  </note>


But what Rick requires is:

B  B  B  B  <note rev="changed">
B B B B B B B B B B B  <para>Content</para>
B B B B B B B  </note>


Cheers,
Dimitre


On Wed, Oct 23, 2019 at 6:47 PM Terry Badger terry_badger@xxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> Rick,
> This will solve your problem using xsl version 2 using 2 for-each-groups.
>
> B  B  <?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"
> B B B B version="2.0">
> B B B B <xsl:template match="/root">
> B B B B B B B B <xsl:copy>
> B B B B B B B B B B B B <xsl:apply-templates/>
> B B B B B B B B </xsl:copy>
> B B B B </xsl:template>
> B B B B <xsl:template match="topic">
> B B B B B B B B <xsl:copy>
> B B B B B B B B B B B B <xsl:copy-of select="@*"/>
> B B B B B B B B B B B B <xsl:for-each-group select="*"
group-starting-with="revst">
> B B B B B B B B B B B B B B B B <xsl:for-each-group select="current-group()"
group-ending-with="revend">
> B B B B B B B B B B B B B B B B B B B B <xsl:choose>
> B B B B B B B B B B B B B B B B B B B B B B B B <xsl:when
test="current-group()/self::*[name() = 'revst']">
> B B B B B B B B B B B B B B B B B B B B B B B B B B B B <xsl:for-each
select="current-group()[name() != 'revst'][name() != 'revend']">
> B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B <xsl:copy>
>
B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B <xsl:
attribute name="rev" select="'changed'"/>
>
B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B <xsl:
value-of select="."/>
> B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B </xsl:copy>
> B B B B B B B B B B B B B B B B B B B B B B B B B B B B </xsl:for-each>
> B B B B B B B B B B B B B B B B B B B B B B B B </xsl:when>
> B B B B B B B B B B B B B B B B B B B B B B B B <xsl:otherwise>
> B B B B B B B B B B B B B B B B B B B B B B B B B B B B <xsl:copy-of
select="current-group()"/>
> B B B B B B B B B B B B B B B B B B B B B B B B </xsl:otherwise>
> B B B B B B B B B B B B B B B B B B B B </xsl:choose>
> B B B B B B B B B B B B B B B B </xsl:for-each-group>
> B B B B B B B B B B B B </xsl:for-each-group>
> B B B B B B B B </xsl:copy>
> B B B B </xsl:template>
> </xsl:stylesheet>
>
>
> Terry
>
>
>
>
>
>
> On Wednesday, October 23, 2019, 03:57:18 AM EDT, Martin Honnen
martin.honnen@xxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
>
>
>
>
> Am 22.10.2019 um 21:10 schrieb Martin Honnen martin.honnen@xxxxxx:
>> On 22.10.2019 20:41, Martin Honnen martin.honnen@xxxxxx wrote:
>>> On 22.10.2019 20:07, Rick Quatro rick@xxxxxxxxxxxxxx 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";
>> B B B  xmlns:xs="http://www.w3.org/2001/XMLSchema";
>> B B B  exclude-result-prefixes="#all"
>> B B B  version="3.0">
>>
>> B B B  <xsl:mode on-no-match="shallow-copy" streamable="yes"
>> use-accumulators="rev-change"/>
>>
>> B B B  <xsl:accumulator name="rev-change" as="xs:boolean"
>> initial-value="false()" streamable="yes">
>> B B B B B B B  <xsl:accumulator-rule match="topic" select="false()"/>
>> B B B B B B B  <xsl:accumulator-rule match="topic/revst" select="true()"/>
>> B B B B B B B  <xsl:accumulator-rule match="topic/revend"
select="false()"/>
>> B B B  </xsl:accumulator>
>>
>> B B B  <xsl:template match="topic/*[accumulator-before('rev-change')]">
>> B B B B B B B  <xsl:copy>
>> B B B B B B B B B B B  <xsl:attribute name="rev">changed</xsl:attribute>
>> B B B B B B B B B B B  <xsl:apply-templates select="@*"/>
>> B B B B B B B B B B B  <xsl:apply-templates/>
>> B B B B B B B  </xsl:copy>
>> B B B  </xsl:template>
>>
>> B B B  <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
>
> B B  <xsl:template
> match="topic/*[boolean(accumulator-before('rev-change'))]">
>
>
> fixes it.
>
>




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