[ticker-dev] Ticker group "invitation" attachments

[Anna Gerber]

> A bit offtopic, but does anyone have any feeling as to whether the above
> is more "correct" XML or the following:
> 
> <group version="1.0" name="Private Chat" type="chat">
>   <keys>
>     <key version="1.0" name="Private Chat"
>          defaultSecure="true" allowInsecure="false"
>          access="shared" data="xxxxxxxxxxxxx" />
>   </keys>
> </group>
> 
> I like the terseness of the above, but it somehow doesn't feel right ;)

Generally XML attributes tend to be used for data that doesn't change
often, properties, values that don't need to be displayed in a UI, or
fields that only have a single, concise, simple-typed value. (Not all of
these cases apply here.)

So for the above, version, name, type, defaultSecure, allowInsecure and
access all make sense as attributes, while data would be better as an
element. Something like the following would be considered to OK as far as
XML conventions go:

<group version="1.0" name="Private Chat" type="chat">
  <keys>
    <key version="1.0" name="Private Chat"
         defaultSecure="true" allowInsecure="false"
         access="shared">xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx</key>
  </keys>
</group>

Anna
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Anna Gerber                                            agerber at dstc.edu.au
CRC for Enterprise Distributed Systems Technology      ph: +61 7 3365 4310
GP South, University of Queensland, 4072, Australia   fax: +61 7 3365 4311
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