[tdwg-tapir] search with no result
"Döring, Markus"
m.doering at BGBM.org
Fri Nov 18 10:47:44 CET 2005
OK, agreed. Gonna put it to the wiki notes until we get the specs sorted:
http://ww3.bgbm.org/protocolwiki/PreliminaryProtocolNotes
markus
-----Ursprüngliche Nachricht-----
Von: tdwg-tapir-bounces at lists.tdwg.org [mailto:tdwg-tapir-bounces at lists.tdwg.org] Im Auftrag von Roger Hyam
Gesendet: Freitag, 18. November 2005 10:33
An: Steven Perry
Cc: tdwg-tapir at lists.tdwg.org
Betreff: Re: [tdwg-tapir] search with no result
A blank (as in just XML declaration) sounds good to me.
Roger
Steven Perry wrote:
Markus,
I've been wondering about this too. My feeling is that we simply return
an empty document (xml definition at top, but empty otherwise). I think
defining a custom <NULL> or <NoMatches> element may be confusing because
with no envelope, the message should be an instance of some schema other
than TAPIR -- one that does not define <NULL> or <NoMatches>. I think
the first approach (empty doc) is less likely to break clients.
-Steve
Döring, Markus wrote:
I found an unsolved problem in my pywrapper notes today regarding envelope-less operations. If I request a TAPIR GET service search operation which doesnt match any results, what should be returned?
Without an envelope this would be an empty document without even a root!
Should we turn on the envelope in this case? Or return something like <NULL> or <NoMatches> defined by the protocol?
Markus
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Roger Hyam
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Taxonomic Databases Working Group
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