[xquery-talk] FLWOR in XSLT 2.0?

[G. Ken Holman]

At 2011-12-01 15:58 +0100, Geert Josten wrote:
>Funny, I always thought the FLWOR was an XQuery only thing...
>
><xsl:stylesheet version="2.0"
>  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>  xmlns:b="books">
>  <xsl:output omit-xml-declaration="yes" indent="yes"/>
>  <xsl:strip-space elements="*"/>
>
>  <xsl:template match="/">
>    <xsl:sequence select=
>    "(for $m in max(for $n in distinct-values(/*/b:book/(b:author |
>b:editor)
>                                             /b:name/concat(b:fname, '|',
>b:lname)),
>                    $cnt in count(/*/b:book/(b:author | b:editor)
>                                  /b:name[$n eq concat(b:fname, '|',
>b:lname) ])
>
>...
>
>(Looks quite horrible to me, like someone couldn't decide between XQuery
>and XSLT.. :-/)

Well, in 2.0 it isn't a full FLWOR expression ... no "let", no 
"where" (though this can often be done with a predicate) and no 
"order by".  That is the difference between the XPath "for 
expression" and XQuery "FLWOR expression".

But I have found it useful to say things like:

    <xsl:value-of select="for $each in expr return expr2($each)"/>

or:

    <xsl:apply-templates
      select="for $this in expr1, $that in expr2 return expr3($this, $that)"/>

. . . . . . . .  Ken


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