[xquery-talk] Group starting with in XQuery?

[Christian Grün]

> Everything in XQuery is elegant.

I wish I could agree… :)


> ----------------------------------------
> David A. Lee
> dlee at calldei.com
> http://www.xmlsh.org
>
> -----Original Message-----
> From: talk-bounces at x-query.com [mailto:talk-bounces at x-query.com] On Behalf Of Michael Kay
> Sent: Tuesday, November 19, 2013 7:09 PM
> To: Geert Josten
> Cc: talk at x-query.com Talk
> Subject: Re: [xquery-talk] Group starting with in XQuery?
>
> If you're asking about XQuery 1.0, the answer is no, unless you regard the solution using recursion as elegant.
>
> In XQuery 3.0 there are "tumbling windows" which give you the capability of XSLT's group-starting-with, and a lot more besides.
>
> Michael Kay
> Saxonica
>
> On 19 Nov 2013, at 18:47, Geert Josten <geert.josten at dayon.nl> wrote:
>
>> Just wondering, is there an elegant way of doing something like this in
>> XQuery?
>>
>>    <xsl:stylesheet version="2.0"
>> xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
>>               <xsl:output indent="yes"/>
>>               <xsl:strip-space elements="*"/>
>>
>>               <xsl:template match="@*|node()">
>>                       <xsl:copy>
>>                               <xsl:apply-templates select="@*|node()"/>
>>                       </xsl:copy>
>>               </xsl:template>
>>
>>               <xsl:template match="P">
>>                       <xsl:variable name="P" select="."/>
>>                       <xsl:for-each-group select="node()"
>> group-starting-with="pg">
>>                               <xsl:apply-templates select="self::pg"/>
>>                               <xsl:element name="{node-name($P)}">
>>                                       <xsl:apply-templates
>> select="$P/@*|current-group()[not(self::pg)]"/>
>>                               </xsl:element>
>>                       </xsl:for-each-group>
>>               </xsl:template>
>>
>>    </xsl:stylesheet>
>>
>> Example input:
>>
>> <Docs>
>>    <Doc>
>>        <P>blah blah blah<pg>1</pg>blah blah</P>
>>        <P>blah blah blah<pg>2</pg>blah blah</P>
>>    </Doc>
>>    <Doc>
>>        <P>blah blah blah<pg>3</pg>blah blah</P>
>>        <P>blah blah blah<pg>4</pg>blah blah</P>
>>    </Doc>
>> </Docs>
>>
>> Cheers,
>> Geert
>>
>> M.Sc. G.P.H. (Geert) Josten
>> Senior Developer
>>
>>
>> Dayon B.V.
>> Delftechpark 37b
>> 2628 XJ Delft
>> The Netherlands
>>
>> T +31 (0)88 26 82 570
>>
>> geert.josten at dayon.nl
>> www.dayon.nl
>>
>> De informatie - verzonden in of met dit e-mailbericht - is afkomstig van
>> Dayon BV en is uitsluitend bestemd voor de geadresseerde. Indien u dit
>> bericht onbedoeld hebt ontvangen, verzoeken wij u het te verwijderen. Aan
>> dit bericht kunnen geen rechten worden ontleend.
>> _______________________________________________
>> talk at x-query.com
>> http://x-query.com/mailman/listinfo/talk
>
>
> _______________________________________________
> talk at x-query.com
> http://x-query.com/mailman/listinfo/talk
>
> _______________________________________________
> talk at x-query.com
> http://x-query.com/mailman/listinfo/talk