[tdwg-tapir] search with no result

["Döring, Markus"]

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
 Technical Architect
 Taxonomic Databases Working Group
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 roger at tdwg.org
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