Handling ROOT files

[Arie Shoshani <arie@math.lbl.gov>]

Dave and Doug,

We started thinking about what it will take to handle ROOT 
files by the Storage manager.   We have a couple of 
questions.

1)  In order to use the SM now, we assume that files have 
file IDs (in addition to names).  Are file IDs assigned to 
ROOT files?

2)  Currently, the CM gets the file names (as they are used 
by HPSS) from the Objectivity catalog.  Where would these 
names exist with ROOT files?

3)  Would the ROOT Tagdb have all the necessary information 
about the components of each event?  i.e. the file_name and 
location in file for each component?  If so, what will be 
passed to the EIs is the same as now: with every "file 
bundle" cached we will pass simply a set of event_ids that 
qualify for that query in that file.

Please comment.

Thanks, Arie.