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Subject: Re: MobileLBSList: WAP/WML interoperable?
Date:  09/13/2000 05:33:08 AM
From:  Alistair Edwardes


>> >Which GI interop-related technologies do you think will get to the
>> >plateau??
>> >
>> General IT - XML (and XSLT), CORBA have reached the plateau - huge
>> investment relies on them
>
>What about the general argument out there that Corba is technologically
>sound but too darn complex to implement? Might people give up if a
>similar, simply Distrib Computing Platform comes along?
>

Maybe, but you can quite effectively hide a Corba wrapper from an
application developer, so the complexities can be left to specialists. Using
the example of java - RMI is built on IIOP, if a simpler platform does come
along there is every chance that Corba will still be at the heart of the
platform (?).

>Supposing WAP is fine for now, for how long to see its shelf life? 2
>years? More? Do big mobile-IT players put all (or most) of their eggs
>in that basket?
>
Maybe after all the've put their eggs into the 3G basket with it's as yet
uncertain future.

>And other simple XML+Java solutions are out there, waiting to be
>discovered, I suspect.
>
I think your right it's simple applications that service the information
needs of a mobile user, mobile multimedia is probably a red herring.

>Yes, indeed OGC is *very* keen on LBS, and will need a strong concerted
>effort to produce and maintain lightweight specs for that marketplace,
>which will soon be much larger than GIS.
>

What are your feelings on the current suggested interfaces, GetLocation,
WhereIsIt, WhereIsItInTermsIUnderstand, BuildPathway, Who'sThere?

I'm not clear as to what interface they actually address. I can see that
GetLocation, WhereIsIt, Who'sThere are useful for a location server but is
it the role of a location server to provide services such as
WhereIsItInTermsIUnderstand, BuildPathway these seem to be value added
services.The implication is that a mobile user will interface directly with
a location service - I can't see the usefulness of this. I guess the
confusion lies in exactly what reference model is being used. Do see a need
for a formal model or do you think that it is generally aggreed and
understood?

>> I also personally think that a deciding factor for the sucsess of GML
>is
>> how
>> soon it will support topology.
>
>Yes, topology is on the to-do list.
>

What about time stamps?

Regards Alistair.




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