[jsdl-wg] Request for clarification: DataStaging element without Source and Target children

[Moreno Marzolla]

Hello,

I'm writing a JSDL->classad-based JDL converter, and I have a question 
related to the interpretation of the jsdl:DataStaging element.
According to the definition, the jsdl:DataStaging element may have two 
child elements (both of which are optional) jsdl:Source and jsdl:Target. 
As I understand:

- if only the jsdl:Source child is given, the DataStaging element refers 
to a request to copy files TO the execution node;
- if only the jsdl:Target child is given, the DataStaging element refers 
to a request to copy files FROM the execution node, upon job termination;
- if both jsdl:Source AND jsdl:Target children are given, then the 
previous two cases are combined (first the file is staged in, and upon 
job termination is staged out).

Now, I do not fully understand the meaning of having a DataStaging 
element without jsdl:Source nor jsdl:Target. How should we interpret 
this situation?

Thanks in advance,

Moreno.

-- 
Moreno Marzolla
INFN Sezione di Padova,    via Marzolo 8,   35100 PADOVA,  Italy
EMail: moreno.marzolla at pd.infn.it         Phone: +39 049 8277047
WWW  : http://www.pd.infn.it/~marzolla    Fax  : +39 049 8756233