Hi,

I've been knocking my head against the wall trying to create an
XSL transform to perform "normalizations" of a set of XML files
that have a common structure.


% XML file before transform


<base>
  <foo>
    <bar weight="20">
      <elementOne>asfd</elementOne>
      <elementTwo>qwer</elementTwo>
    </bar>
    <bar weight="5">
      <elementOne>asfd</elementOne>
      <elementTwo>qwer</elementTwo>
    </bar>
    <bar weight="30">
      <elementOne>asfd</elementOne>
      <elementTwo>qwer</elementTwo>
    </bar>
  </foo>
</base>


% XML file after transform


<base>
  <foo weightSum="55">
    <bar weight="20" lower="1" upper="20">
      <elementOne>asfd</elementOne>
      <elementTwo>qwer</elementTwo>
    </bar>
    <bar weight="5" lower="21" upper="25">
      <elementOne>asfd</elementOne>
      <elementTwo>qwer</elementTwo>
    </bar>
    <bar weight="30" lower="26" upper="55">
      <elementOne>asfd</elementOne>
      <elementTwo>qwer</elementTwo>
    </bar>
  </foo>
</base>

The idea is that a random number between 1 and weightSum would be
selected, and then the child element of the element w/ the weightSum
attribute that has lower<=randomNum<=upper would be selected.  This
is a transformation that would only be run when the underlying xml
files
have been updated, so speed of transformation is not an issue.

Constraints: I have many files with this 'weightSum'-'weight' pattern,
and the element names ('foo' and 'bar' in the example above) differ
from file to file. Furthermore, it would be great if the transform
worked on nested 'weightSum'-'weight' patterns, such as the following.


% XML file before transform


<base>
  <foo>
    <bar weight="20">
      <elementOne weight="3">asfd</elementOne>
      <elementTwo weight="8">qwer</elementTwo>
    </bar>
    ...


  </foo>
</base>


% XML file after transform


<base>
  <foo weightSum="55">
    <bar weight="20" lower="1" upper="20" weightSum="11">
      <elementOne weight="3" lower="1" upper="3">asfd</elementOne>
      <elementTwo weight="8" lower="4" upper="11">qwer</elementTwo>
    </bar>
    ...
  </foo> 
</base> 


Any help would be appreciated. 


- Arnold