Re: [Opensync-devel] capabilities with attributes

[Henrik /K. <kaa...@us...>]

Daniel Gollub wrote:
> On Tuesday 20 October 2009 07:02:17 pm Henrik /KaarPoSoft wrote:
>   
>> Some elements in an xml format can have attributes, such as:
>> <Address Location="Home">
>> Is there any way to define which such capabilities a plugin supports?
>>
>> One plugin may support only one address without specifying location,
>> another plugin may support only Home,
>> and a third may support Home and Work,
>> etc.
>>
>>     
>
> In theory: yes.
>
> Unfortuantely the xmlformat-merger and -demerger function is not yet handling 
> attributes. It's just handles the fields.
>
> But you can already define capabilities that you only support a limit type of 
> attributes - e.g. as value enumeration (valenum).
>
>
> This is pretty new due to the new "capsformat" stuff.
>
> The capabilities defenition for your example would look then something like 
> that:
>
>
> Caps example which supports only Home and Work:
> -----8<------
> <?xml version="1.0"?>
> <Caps Version="1.0" CapsFormat="xmlformat">
>   <ObjType Name="contact">
>     <Cap>
>       <Name>Address</Name>
>       <Parameter>
>          <Name>Location</Name>
>          <ValEnum>Home</ValEnum>
>          <ValEnum>Work</ValEnum>
>       </Parameter>
>     </Cap>
> [...]
>    </ObjType>
> </Cap>
> ------>8-----
>
>
>
> supports only Home:
> -----8<------
> <?xml version="1.0"?>
> <Caps Version="1.0" CapsFormat="xmlformat">
>   <ObjType Name="contact">
>     <Cap>
>       <Name>Address</Name>
>       <Parameter>
>          <Name>Location</Name>
>          <ValEnum>Home</ValEnum>
>       </Parameter>
>     </Cap>
> [...]
>    </ObjType>
> </Cap>
> ------>8-----
>
>
> supports no specific location
> -----8<------
> <?xml version="1.0"?>
> <Caps Version="1.0" CapsFormat="xmlformat">
>   <ObjType Name="contact">
>     <Cap>
>       <Name>Address</Name>
>     </Cap>
> [...]
>    </ObjType>
> </Cap>
> ------>8-----
>
> Supports all values for Location:
> -----8<------
> <?xml version="1.0"?>
> <Caps Version="1.0" CapsFormat="xmlformat">
>   <ObjType Name="contact">
>     <Cap>
>       <Name>Address</Name>
>       <Parameter>
>          <Name>Location</Name>
>       </Parameter>
>     </Cap>
> [...]
>    </ObjType>
> </Cap>
> ------>8-----
>
>
> Do you think this kind of capabilities definition would represent all the 
> combinations?
>
> Still, we would need to implement merger and demerger code to handle the XML 
> attributes in the xmlformat plugin ...
>
>
> Best Regards,
> Daniel
>
>   
At the face of it, this seems to make sense.
However, I need to work on "my" mozilla-sync capabilities a bit more, 
before I can answer whether
"this kind of capabilities definition would represent all the

combinations?"