Re: filtering problem

[Martin Bjorklund <mbj@tail-f.com>]

Andy Bierman <ietf@andybierman.com> wrote:
> Hi,
> 
> There is another problem with filtering and the examples in sec 5: (!!!)
> 
> The draft must say exactly where in the <notification> element
> that the <filter> is applied.  The current text does not say anything.

Agreed.

> All the examples in sec. 5 are broken because the 'notification type'
> layer is missing.

I think it is ok.  Specify that the filter is applied to the
'notificationContent' element as root (which is the abstract element).

> The examples assume the filters can only be
> applied to a conceptual datastore, just like the <rpc> filter.
> 
> However, the most commonly needed filter is going to be
> on the notification type itself!
> 
> Example (w/o namespaces):
> 
>    <notification>
>      <configChange>
>         <configChangeTime>date-time string...</configChangeTime>
>         <configChangedBy>fred@example.com</configChangedBy>
>         <configTarget>/interfaces/interface[name='eth0']</configTarget>
>          ...
>      </configChange>
>    </notification>
> 
> For simplicity, assume the manager just wants
> this one notification type. The filter is going to be something like:
> 
>   <filter type="subtree">
>     <configChange/>
>   </filter>

Yes, and IMO this is consistent with the examples.


/martin



> A filter for configChange just on a specific configTarget might be:
> 
>   <filter type="subtree">
>     <configChange>
>       <configTarget>/interfaces/interface[name='eth0']</configTarget>
>     </configChange>
>   </filter>
> 
> The way the draft is now does not reflect how notifications are
> actually structured.
> 
> 
> Andy
> 
> 
> 
> 
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