RE: [xsl] creating XML hierarchy where not existed before??

["Meltsner, Kenneth" <Kenneth dot Meltsner at ca dot com>]

It can be solved in XML.

Basically, you can do it with recursion:

For each starting element (e.g. group1), you process it by emitting the start of a element of level n, processing the input element itself, and calling a recursive template to process the following element of level n+1.

The recursive template checks whether the element passed to it is of the n+1 level; if so, it processes it (probably with another pair of a level-x template and a recursive template) and calls itself with the next element.  If it's level n, terminate.

Control then returns to the template that called the recursive template, the closing tag of level n is output, and the template ends.

Or something like this:


<level1>
process the group1 element
call-template [process-level1] with the next element
</level1>


process-level1 does the following if:

[group1] -> return without doing anything
[group2] -> process group2, call-template level1 with the next element (forward-sibling)

and so forth.  Variations come from whether levels can be missing (a group4 following a group2), multiple group n's in a row, etc.

Ken Meltsner

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