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Jerry JanofskySubject: How do find get parent group when nesting xsl:for-each-group
Author: Jerry Janofsky
Date: 15 Sep 2007 07:31 PM
I am using nested <xsl:for-each-group> statements. Within my second group, I want to know what the grouping key was for the first group. Current-grouping-key gives me the current one, but how can I get the parent group-key? I'm stumped?

Here is some pseudo xml for a person that has 2 city elements. If I use nested groups to first group by city, then by last name, how do I get the value of the current city.

<person>
<lastname>Smith</lastname>
<city>Boston</city>
<city>New York</city>
</person>

XSL frag looks like:

<xsl:for-each-group select="person" group-by="city">
<xsl:for-each-group select="current-group()" group-by="lastname">

How do I get the value of the first grouping-key (city) while I am here? My person can have more than one city so I can't just get it from person/city because I don't know which city to get the value of?

I have a feeling this is an easy answer, but I don't see it?

Jerry J
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Tony LavinioSubject: How do find get parent group when nesting xsl:for-each-group
Author: Tony Lavinio
Date: 15 Sep 2007 11:18 PM
Maybe I'm missing something, but couldn't you just store
the current-grouping-key of the outer loop to a variable,
and then read it in the inner loop?
Postnext
Jerry JanofskySubject: How do find get parent group when nesting xsl:for-each-group
Author: Jerry Janofsky
Date: 15 Sep 2007 11:36 PM

But I can only set the variable once, right? What do I do for the next iteration? Or am I missing something?
Postnext
Jerry JanofskySubject: How do find get parent group when nesting xsl:for-each-group
Author: Jerry Janofsky
Date: 16 Sep 2007 07:35 PM

As far as I know, there is no way to find the parent group key. However, I did solve my problem by putting the second group by inside a template. I then pass in the parent group key as a parameter.

I suppose most experienced XSLT programmers would have known this right away.
Postnext
James DurningSubject: How do find get parent group when nesting xsl:for-each-group
Author: James Durning
Date: 17 Sep 2007 10:51 AM
You set the variable once every iteration of the for-each. The variable gets reset every time.
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Jerry JanofskySubject: How do find get parent group when nesting xsl:for-each-group
Author: Jerry Janofsky
Date: 17 Sep 2007 06:28 PM
Are you sure I can set the same variable on every iteration?

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Minollo I.Subject: How do find get parent group when nesting xsl:for-each-group
Author: Minollo I.
Date: 17 Sep 2007 08:25 PM
Positive.
   
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