[seek-dev] XQuery and XSLT

[Peter McCartney]

I think I was envisioning the interim solution being that very simple xquery
statements could be parsed and converted to some existing search syntax like
sql, or metacat's node query. This option would be highly constrained,
limited only to for expressions that can be easily equated to the concept
we had previously defined for seek query. In xanthoria and desktop Morpho,
we could convert any xquery statement that we can't parse into xpath to
perform a search in xpath which is likely to work, albeit slowly. Most
search applications are tightly constrained anyway so its rare that you
would be attempting to process a FLWR statement where a user had actually
written the for expression.


Peter McCartney (peter.mccartney at asu.edu)
Center for Environmental-Studies
Arizona State University
 


-----Original Message-----
From: Dan Higgins [mailto:higgins at nceas.ucsb.edu] 
Sent: Monday, May 19, 2003 11:48 AM
To: seek-dev at ecoinformatics.org
Subject: [seek-dev] XQuery and XSLT


Hi All,

I have been looking over various web pages about XQuery in light of the 
recent decision to use XQuery in the SEEK ecogrid. An interesting 
document that compares XQuery and XSLT can be found at

http://www.xmlportfolio.com/xquery.html

The examples are somewhat out-of-date, but they are interesting because 
they show how XQuery statements can be implemented in XPath/XSLT. There 
may be some ideas here about how we might implement a subset of XQuery 
while waiting for full-featured XQuery engines.

Dan

-- 
*******************************************************************
Dan Higgins                                  higgins at nceas.ucsb.edu
http://www.nceas.ucsb.edu/    Ph: 805-892-2531
National Center for Ecological Analysis and Synthesis (NCEAS) 
735 State Street - Room 205
Santa Barbara, CA 93195
*******************************************************************


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