perfsonar development work

[Maciej Glowiak <>]

Herbert,

As I wrote before: in general there are two ways of generating message
1) by DOM Document (jDOM, Xerces, DOM4j, etc)
2) by NMWG classes

API for Query (such as LSQueryRequestGenerator.java) was using 1), but I 
gave it up. This API is now not up to date, but I didn't have time to 
re-write it with NMWG classes usage. That wasn't so urgent, because 
nobody used it.

API for Registration uses 2) and, in my opinion, this should be used 
also for generating other requests.

The namespace in NMWG classes can't be set manually (like in DOM 
Document). The namespaces are hidden behind packages. Let me explain in 
example (please focus on import clauses):

----------------------------------------------------------
org.ggf.ns.nmwg.base.v2_0.Subject
     class is <nmwg:subject> tag
----------------------------------------------------------

and

----------------------------------------------------------
org.ggf.ns.nmwg.characteristic.utilization.v2_0.Subject
     class is <utilization:subject> tag
----------------------------------------------------------

namespace prefixes are set in class constructors.

Regarding your second e-mail, I am not sure where the problem is:

> The Query LS explain is about of the Query Message, because I am not seeing in Query Message the xQuery expression like in old messages.  

>     <xquery:subject id="sub1">
>       declare namespace nmwg="http://ggf.org/ns/nmwg/base/2.0/";;
>       declare namespace 
> perfsonar="http://ggf.org/ns/nmwg/tools/org/perfsonar/1.0/";;
>       declare namespace 
> psservice="http://ggf.org/ns/nmwg/tools/org/perfsonar/service/1.0/";;
>       declare namespace xquery="http://ggf.org/ns/nmwg/tools/org/perfsonar/service/lookup/xquery/1.0/";;            
>
>       /nmwg:store/nmwg:metadata
>     </xquery:subject>

That's XQuery expression inside <xquery:subject> element, and:

>     <nmwg:eventType>service.lookup.xquery</nmwg:eventType>

that's query type inside <nmwg:eventType>.

Maciej



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| Maciej Glowiak        Network Research and Development            ||
| 

     Poznan Supercomputing and Networking Center ||
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