Better way to structure XQuery

[Stacy.Ladnier at noaa.gov]

I am trying to write a query used to detect what type of Profile a
particular file is. I do this by detecting the presence of tags that are
specific to that particular profile. The paths to check can be in
multiple locations, not necessarily sharing the same parent (often the
metadata element is the only thing in common with the paths) but, it is
possible as shown in the two paths in the code, that some are siblings.

Ideally, once the method detects a path exists, the code should change
the profileType from its default of Standard to the new type of
Biological. All other processing is considered insignificant and it
would be nice to break out of the loop as soon as the change occurs.
Unfortunately, I have had no luck getting that to work.

The following code is what I have now, and it works. But something tells
me it can be better. I am using XQuery implementation within the eXist
database if that helps.

let $mydoc :=doc('http://localhost:8080/exist/rest/db/bio.xml')
let $profileType := 'Standard'
let $paths := ($mydoc/metadata/idinfo/spdom/bounding/boundalt/altmin,
$mydoc/metadata/idinfo/spdom/bounding/boundalt/altmax, path3, path4, ...)

for $p in $paths
   let $profileType := if ($p) then 'Biological' else $profileType


I would LOVE to use something similar to Ken's example, where I can
store the paths in an xml file and pull them in, but I am not fond of
using the two step process his example requires. Not saying it is wrong,
just personal preference and ease of use within Orbeon/eXist framework.

Thanks for all the responses! This is my first post and I am impressed
at the level of assistance everyone is taking the time to give me.
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