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 I am working on a grouping problem that I have been placed in charge of. From the list I've gathered that I more than likely need to use SteveMuench's algorithm to quickly and effectively sort my somewhat complex list. However, I'm at a loss as to how to procede. I've included the DTD and a sample XML for the problem at hand, however I feel that I should explain why this is more complex than a simple sort. In addition to sorting each of the 'proc' elements by alphabetizing, I would also like to sort by creating a collapsable tree. In addition, I am expecting my xml tree to be scattered across several files. The 'proc' element includes two additional elements: 'exec' and 'dpnd'. The 'dpnd' implies that there is an additional dependency on the 'proc' element. In other words, when I group the list, I need to include those items within the 'dpnd' prior to the 'proc' element that includes it. The 'exec' has a type attribute associated with it which implies that either the list may have ('a') any order or ('i') the order has been specified explicitly. Finally, the 'proc' element has a type attribute that states that the items within the 'exec' list might be interleaved ('r') with any other list (i.e. a dependency) or must be listed within that order ('e'). A quick DTD: <!ELEMENT list (proc)*> <!ELEMENT proc (exec|dpnd)*> <!ELEMENT exec (item)*> <!ELEMENT dpnd (item)*> <!ELEMENT item EMPTY> <!ATTLIST list mode CDATA #IMPLIED
And a small xml listing to clarify the complexities: -- file 1 -- <list mode="normal"> <proc id="a" /> </list> -- file 2 --
<list mode="normal">
<proc type="r" id="b">
<exec type="a">
<item idr="c" />
<item idr="d" />
</exec>
</proc> <proc type="e" id="c">
<dpnd>
<item idr="a" />
</dpnd>
<exec type="a">
<item idr="e" />
<item idr="f" />
</exec>
</proc>
</list>-- file 3 --
<list mode="normal">
<proc id="d">
<dpnd>
<item idr="g" />
</dpnd>
</proc>
</list>-- file 4 -- <list mode="normal"> <proc id="e" /> <proc id="f" /> <proc id="g" /> </list>
2) a hierarchical listing (simply creating an expandable tree): a b d c e f g 3a) an execution listing (this can be an expandable tree - preferred): b g d a c e f 3b) an execution listing (flat list - acceptable): b g d a c e f I honestly don't know where to begin, so if any of you have references or small samples of xsl I can hack up that would be great! Thanks, Bix _________________________________________________________________ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list 
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