[webservices] A question of location ID, how to represent empty IDs in XML?

[Ellen Yu]

Hear hear Yazan!


Ellen


On Tue, Aug 12, 2014 at 9:17 PM, Yazan Suleiman <yazan.suleiman at gmail.com>
wrote:

> Seed represents unidentified locations as "  " [2 empty spaces] (This is a
> limitation of SEED), while most (if not all) modern languages represent
> such thing as NULL.   NULL does not equal "" or "  " or "--".  NULL is NULL
> and should be represented as such.  While SEED is limited, XML is not.  Why
> should we incorporate Seed limitations into any new XML schema.
>
>
>
> Unidentified attributes (values=unidentified or not provided or null) are
> omitted in XML.  When an attribute does not appear in the document, then it
> is NULL (no confusion there).
>
>
>
> In my opinion StationXml shouldn't force me to provide a value for an
> attribute that is unknown to me. While the purpose of StationXml schema is
> to map between SEED and XML, limitations of Seed shouldn't be carried over.
>
>
>
> For historical data, software should take care of any conversion needed.
> What you store in your database is outside the scope of StationXml.
>
>
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> On Tue, Aug 12, 2014 at 5:50 PM, Philip Crotwell <crotwell at seis.sc.edu>
> wrote:
>
>> On Tue, Aug 12, 2014 at 7:12 PM, Doug Neuhauser
>> <doug at seismo.berkeley.edu> wrote:
>> >
>> >
>>
>> >
>> > IF YOU WANT TO CHANGE SEED, THEN PROPOSE TO CHANGE SEED.
>> >
>> > - Doug N
>> >
>> >
>>
>> OK, I would like to offer a proposal to change to SEED to eliminate
>> blank location ids.
>>
>> Wait, can I do that?
>> :)
>>
>> Philip
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>
>
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