perfsonar development work

[Fausto Vetter <>]

Hi,

I liked the idea of being possible to have more than one parameters, 
because other use would be in rrdma/sqlma to store tool specific 
parameter and the scheduling information that have been stored in the ma.

Fausto

Roman Lapacz wrote:

> Hi Martin, Jason, Jeff, others,
>
> I've got one more observation related with parameters in our schema. 
> Now only one parameters element is allowed to be in the metadata. What 
> do you think to allow existence of more than one. This would be useful 
> to keep in the same metadata (or other element, for example the key) 
> parameters representing more then one namespace.
>
> Example for the key:
>
>  <nmwg:key>
>      <nmwg:parameters id="params1">
>          <nmwg:parameter 
> name="file">/home/romradz/test.rrd</nmwg:parameter>
>          <nmwg:parameter name="dataSource">pkts</nmwg:parameter>
>          <nmwg:parameter name="valueUnits">Bps</nmwg:parameter>
>      </nmwg:parameters>
>      <select:parameters id="params2">
>          <nmwg:parameter name="startTime">1121472000</nmwg:parameter>
>          <nmwg:parameter name="endTime">1121904000</nmwg:parameter>
>          <nmwg:parameter 
> name="consolidationFunction">AVERAGE</nmwg:parameter>
>          <nmwg:parameter name="resolution">60</nmwg:parameter>
>      </select:parameters>
>      <timetrans:parameters id="params3">
>          <nmwg:parameter name="ConvertTo">unix</nmwg:parameter>
>          <nmwg:parameter name="ConvertFrom">iso</nmwg:parameter>
>      </timetrans:parameters>
>  </nmwg:key>
>
>
> This is just en example and there might be other situations when using 
> parameters of different namespaces could be needed.
>
> It's possible to overcome this problem without using above solution if 
> I had enhanced parameter elements. I put example below but I think 
> it's just a trick and the above is more suitable.
>
>
>  <nmwg:key>
>      <nmwg:parameters>
>          <map:parameter name="http://ggf.org/ns/nmwg/base/2.0/";>
>              <collection:item 
> name="file">/home/romradz/test.rrd</collection:item name>
>              <collection:item name 
> name="dataSource">pkts</collection:item name>
>              <collection:item name 
> name="valueUnits">Bps</collection:item name>
>          <map:parameter>
>          <map:parameter name="http://ggf.org/ns/nmwg/ops/select/2.0/";>
>              <collection:item 
> name="startTime">1121472000</collection:item>
>              <collection:item name="endTime">1121904000</collection:item>
>              <collection:item 
> name="consolidationFunction">AVERAGE</collection:item>
>              <collection:item name="resolution">60</collection:item>
>          </map:parameter>
>          <map:parameter 
> name="http://schema.perfonar.net/tools/transform/utilization/unixtime/2.0/";> 
>
>              <collection:item name="ConvertTo">unix</collection:item>
>              <collection:item name="ConvertFrom">iso</collection:item>
>          </map:parameter>
>      <nmwg:parameters>
>  </nmwg:key>
>
> (I'm still using map and collection namespaces because I haven't seen 
> the minutes from related discussion in Brasil yet so treat them here 
> as temporary. I just wanted to show the idea of workaround).
>
>
> What do you think?
>
> Roman