Re: [xsl] Collation for dotted decimal?

[andrew welch <andrew.j.welch@xxxxxxxxx>]

On 2/6/06, cknell@xxxxxxxxxx <cknell@xxxxxxxxxx> wrote:
> Given a set of numbers such as the list below, is there a collation for
sorting these in such a way that, for example, 3.3.1.1.11 comes after
3.3.1.1.2?
>
> The numbers are the text nodes of a set of elements produced with an
<xsl:for-each-group>.
>
>
> 3.1.1.3.1
> 3.1.1.3.2.4.2
> 3.1.1.3.4
> 3.2.1.1.7.3.8
> 3.4.4.1.10
> 3.4.4.1.11
> 3.1.1.3.7
> 3.1.1.3.8
> 3.1.1.3.9
> 3.1.1.3.10
> 3.1.1.3.11
> 3.1.1.4.1.1
> 3.1.1.4.1.2
> 3.1.1.4.1.3
> 3.1.1.4.1.4
> 3.1.1.4.1.5
> 3.1.1.4.1.6
> 3.1.1.4.1.7
> 3.1.1.4.1.8
> 3.1.1.3.2.2
> 3.1.1.1.1.1.17

How about the brute force technique:

<xsl:for-each-group ...>
  <xsl:sort select="tokenize(.,'\.')[1]" data-type="number"/>
  <xsl:sort select="tokenize(.,'\.')[2]" data-type="number"/>
  <xsl:sort select="tokenize(.,'\.')[3]" data-type="number"/>
  <xsl:sort select="tokenize(.,'\.')[4]" data-type="number"/>
  <xsl:sort select="tokenize(.,'\.')[5]" data-type="number"/>
  <xsl:sort select="tokenize(.,'\.')[6]" data-type="number"/>
</xsl:for-each>

Obviously this doesn't scale well :)