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Subject: [wsrp] Shared Sessions


|---------+---------------------------->
|         |           Carsten Leue     |
|         |                            |
|         |           06/06/2002 05:50 |
|         |           PM               |
|         |                            |
|---------+---------------------------->
  >---------------------------------------------------------------------------------------------------------------------------------------------|
  |                                                                                                                                             |
  |       To:       Michael.Freedman@oracle.com                                                                                                 |
  |       cc:       wsrp-interfaces@lists.oasis-open.org                                                                                        |
  |       From:     Carsten Leue/Germany/IBM@IBMDE                                                                                              |
  |       Subject:  Shared Sessions                                                                                                             |
  |                                                                                                                                             |
  |                                                                                                                                             |
  >---------------------------------------------------------------------------------------------------------------------------------------------|




Mike - unfortunately I missed your note that the telephone conference began
earlier. But when we then talked about shared sessions I was a little
concerned.
As far as I understood the proposition, you would vote for creating one
session for ALL remote portlets (coming from one provider). These can then
share data in this session but would be responsible for using namespaces
when trying to store private data.

This is clearly a simple approach but it recalls me of the "old"
programming models on desktop machines where all processes could access
(and destroy) data from all other processes on a machine. This easily leads
to instability and security issues.

I would propose that the consumer would be responsible for a sort of
"application protection" where it lets only selected portlets (maybe based
on metadata) share a session. This could efficiently isolate different
logical sets of remote portlets. The argument that in such a case you could
simply create a new portlet service does not hold for me as in may cases
all portlets would be published by the same portal (so the same portlet
service).


Best regards
Carsten Leue

-------
Dr. Carsten Leue
Dept.8288, IBM Laboratory B÷blingen , Germany
Tel.: +49-7031-16-4603, Fax: +49-7031-16-4401






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