[xsl] Question about generating a full tree from a tree with xrefs using xslt ?

Subject: [xsl] Question about generating a full tree from a tree with xrefs using xslt ?
From: Peter Biechele <Peter.Biechele@xxxxxxxxx>
Date: Wed, 10 Dec 2003 14:08:39 +0100
I have the following problem with XSLT:

The input stream is like:

<elem id="a1" type="w">
  <text>aa</text>
</elem>
<elem id="a2" type="x">
  <text>bb</text>
  <ref>a1</ref>
</elem>
<elem id="a3" type="y">
 <text>cc</text>
  <ref>a2</ref>
</elem>
<elem id="a4" type="x">
 <text>dd</text>
  <ref>a1</ref>
</elem>

Now i need in the output stream the following:

start with the text from all "w" types,
plot the text: for a special "w" type look for all "x" types which reference 
this "w" type
plot the text: for this "w" type again look for all "y" types, which reference 
either the given "w" type or any "x" type, which reference this "w" type.


So in general this is the problem of transforming a tree (with no circular 
references) having references to another tree without references but 
redundant tree nodes.


Can anybody help with some ideas ??

Thank you very much,
Peter Biechele

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Dr. Peter Biechele, E-Mail: Peter.Biechele@xxxxxxxxx


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