Re: [Netconf] about subtree filtering

[WashamFan <Washam.Fan at huaweisymantec.com>]

Hi,

----- Original Message -----
From: Martin Bjorklund <mbj at tail-f.com>
Date: Friday, June 26, 2009 4:35 pm
Subject: Re: [Netconf] about subtree filtering
To: Washam.Fan at huaweisymantec.com
Cc: andy at netconfcentral.com, netconf at ietf.org


> WashamFan <Washam.Fan at huaweisymantec.com> wrote:
>  > > Andy Bierman <andy at netconfcentral.com> wrote:
>  > >  > This is fine.
>  > >  
>  > >  Yes.
>  > >  
>  > >  > This is just another selection node, like if <user/> was empty.
>  > >  > If there is no <role> in the entry, the whole thing will be
>  > >  > left out, because the select nodes form an AND expression.
>  > >  
>  > >  No, selection nodes do not form AND expressions - content match 
> nodes
>  > >  do.  So even if no users/role exists, the fred user will be returned
>  > >  (if it exists).
>  > 
>  > Actually, that is what I want. I want all possible info about fred.
>  
>  Ok.
>  
>  > If fred has the role, please return the role info, elsewise, just 
> return me
>  > the basic info.
>  
>  This is probably just fine, but note that in your example you did:
>  
>               <users>
>                 <user>
>                   <name>fred</name>
>                   <type/>
>                   <full-name/>
>                 </user>
>                 <role/>                            <!-- user's sibling-->
>               </users>
>  
>  Which would correspond to this:
>  
>    container users {
>        list user { ... }
>        leaf role { ... }
>    }
>  
>  so the role - in your example - isn't a property of the user, but a
>  global property for all users.
>  
>  
>  The reasoning applies even if we do:
>  
>    container users {
>        list user {
>            ...
>            leaf role { ... }
>        }
>    }
>  
Well, the data model might like this:

   container users {
     list user {
       container basic {
          leaf name { ...}
          leaf type {...}
          leaf full-name { ... }
       }
       leaf role { ... }
     }
   }

So, the filter

   <users>
      <user>
        <basic>
           <name>fred</name>
           <type/>
           <full-name/>
        </basic>
        <role/>
      </user>
    </users>

will help return what I want?

Thanks,
washam