perfsonar development work

[Maciej Glowiak <>]

Hi

The bug in LS was requested:

Michael Michalis wrote:
> -Query Request
>
> When a query returns no result the response should contain an empty 
> datum element. In these cases the response contains just an empty data 
> element.(e_2_1,e_2_2,e_2_3,e_4_7)


I think it's because (maybe the inconsistent) description of LS 
functionality.

There is an undefined behaviour of the LS. To be honest I have no idea 
what to do with it.

There are two different cases (in case of querying LS):

1) empty result
  e.g. "give me description of MA service having "PSNC MA 1" name"
  result - because description is empty we get just "" because there is
           one such service with empty description

          ---------------------
          <nmwg:data>
              <nmwg:datum>
              </nmwg:datum>
          </nmwg:data>
          ---------------------

2) no result
  e.g. "give me description of MA service having "PSNC MA 1" name"
  result - no such services, so we get no datum element

          ---------------------
          <nmwg:data>
          </nmwg:data>
          ---------------------

In my opinion such distinction is important, but that's more the 
question to client apps developers.

I've already applied the fix (it's rather minor one) but commented it in 
code.

Best regards

Maciej

--

 --------------------------------------------------------------------
| Maciej Glowiak        Network Research and Development            ||
| 

     Poznan Supercomputing and Networking Center ||
| (+48 61) 858 2024          -- skype_id: maciej_psnc   GG: 4526858 ||
 ====================================================================