[Nml-wg] xml list examples

[Aaron Brown]

On the call, I was asked to send some examples of how we've done ordered lists in XML before. Looking through various xml bits, I found a few different ways that we've sorted lists.

1) a numerical 'id' element:

         <nmwg-cp:hop id=”0”> 
             ....
         </nmwg-cp:hop> 
         <nmwg-cp:hop id=”1”> 
             ....
         </nmwg-cp:hop> 
         <nmwg-cp:hop id=”2”> 
             ....
         </nmwg-cp:hop> 
         <nmwg-cp:hop id=”3”> 
             ....
         </nmwg-cp:hop> 

2) explicit 'next' pointers:

      <path>
          <hop id="internet2-1">
              ....
              <nextHop>esnet-1</nextHop>
          </hop>
          <hop id="esnet-1">
              ....
              <nextHop>bnl-1</nextHop>
          </hop>
          <hop id="bnl-1">
              ....
          </hop>
      </path>

3) implicit document ordering (this data corresponds to a traceroute. there would be more 'datum' elements in a real traceroute instance each of which corresponds to a single traceroute probe sent. This was cleaned up to make it easier to read):

     <nmwg:data id="data.AAAFFF.0" metadataIdRef="meta.AAAFFF" xmlns:nmwg="http://ggf.org/ns/nmwg/base/2.0/">
       <traceroute:datum hop="198.129.254.29" numBytes="64" queryNum="1" timeType="unix" timeValue="1282079154" ttl="1" value="0.135" valueUnits="ms"/>
       <traceroute:datum hop="134.55.219.10" numBytes="64" queryNum="1" timeType="unix" timeValue="1282079154" ttl="2" value="1.14" valueUnits="ms"/>
       <traceroute:datum hop="134.55.217.2" numBytes="64" queryNum="1" timeType="unix" timeValue="1282079154" ttl="3" value="37.212" valueUnits="ms"/>
       <traceroute:datum hop="134.55.209.98" numBytes="64" queryNum="1" timeType="unix" timeValue="1282079154" ttl="4" value="1.616" valueUnits="ms"/>
       <traceroute:datum hop="134.55.220.49" numBytes="64" queryNum="1" timeType="unix" timeValue="1282079154" ttl="5" value="28.643" valueUnits="ms"/>
       <traceroute:datum hop="134.55.209.46" numBytes="64" queryNum="1" timeType="unix" timeValue="1282079154" ttl="6" value="41.773" valueUnits="ms"/>
       <traceroute:datum hop="134.55.221.58" numBytes="64" queryNum="1" timeType="unix" timeValue="1282079154" ttl="7" value="52.36" valueUnits="ms"/>
       <traceroute:datum hop="134.55.218.101" numBytes="64" queryNum="1" timeType="unix" timeValue="1282079154" ttl="8" value="52.373" valueUnits="ms"/>
       <traceroute:datum hop="198.124.252.141" numBytes="64" queryNum="1" timeType="unix" timeValue="1282079154" ttl="9" value="52.311" valueUnits="ms"/>
     </nmwg:data>

Cheers,
Aaron