[tdwg-tapir] search with no result

Steven Perry smperry at ku.edu
Thu Nov 17 19:18:26 CET 2005


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.


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?
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