Re: [xsl] for-each(-group) - flattening a set of strings hierarchy

[Robert Koberg <rob@xxxxxxxxxx>]

OK, I am getting basically what I want, but looking for a more elegant  
way:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";  
version="2.0" xmlns:xs="http://www.w3.org/2001/XMLSchema";>
  <xsl:output method="text"/>

  <xsl:template match="/">
    <xsl:variable name="resources" as="xs:string*">
      <xsl:sequence select="q/a//mapping/@resource"/>
    </xsl:variable>
    <xsl:variable name="packages" as="xs:string*">
      <xsl:for-each-group select="$resources"
        group-by="
        string-join(
          remove(tokenize(., '/'), count(tokenize(., '/')))
        , '.')
        ">
        <xsl:sequence select="current-grouping-key()"/>
      </xsl:for-each-group>
    </xsl:variable>
    <xsl:for-each-group select="$packages" group-by="substring- 
before(., '.')">
var <xsl:value-of select="current-grouping-key()"/> = {};<xsl:text>
</xsl:text>
    </xsl:for-each-group>
    <xsl:for-each select="$packages">
      <xsl:value-of select="."/> = {};<xsl:text>
</xsl:text>
    </xsl:for-each>
  </xsl:template>
</xsl:stylesheet>


On Jan 22, 2009, at 11:10 PM, Robert Koberg wrote:

> Hi, (didn't really know how to phrase the subject... :) )
>
> Given an XML instance like:
>
> <q>
>  <a>
>    <mapping resource="a/b/A.xml"/>
>    <mapping resource="a/b/B.xml"/>
>    <mapping resource="a/b/c/A.xml"/>
>    <mapping resource="a/b/c/B.xml"/>
>    <mapping resource="d/e/A.xml"/>
>    <mapping resource="d/e/B.xml"/>
>  </a>
> </q>
>
> I want to get output as (javascript namespaces):
>
> var a = {};
> a.b = {};
> a.b.c = {};
>
> var d = {};
> d.e = {};
>
> I am clumsily getting about half of the way there, but I feel like I  
> am approaching it wrong. I am imagining a bunch of for loops.
>
> Here is what I am outputting so far with the XSL below (don't really  
> care about the whitespace at this point):
>
> var a.b = {};
> a.b.c = {};
> d.e = {};
>
> <?xml version="1.0" encoding="UTF-8"?>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";  
> version="2.0" xmlns:xs="http://www.w3.org/2001/XMLSchema";>
>  <xsl:output method="text"/>
>
>  <xsl:template match="/">
>
>    <xsl:variable name="resources" as="xs:string*">
>      <xsl:sequence select="q/a//mapping/@resource"/>
>    </xsl:variable>
>
>    <xsl:variable name="packages" as="xs:string*">
>      <xsl:for-each-group select="$resources"
>        group-by="
>        string-join(
>        remove(tokenize(., '/'), count(tokenize(., '/')))
>        , '/')
>        ">
>        <xsl:sequence select="translate(current-grouping-key(), '/',  
> '.')"/>
>      </xsl:for-each-group>
>    </xsl:variable>
>
>    <xsl:for-each-group select="$packages" group-by=".">
>      <xsl:if test="position()=1">var </xsl:if>
>      <xsl:value-of select="current-grouping-key()"/> = {};<xsl:text>
> </xsl:text>
>    </xsl:for-each-group>
>  </xsl:template>
>
> </xsl:stylesheet>
>
> thanks for any help,
> -Rob