[Ace-users] Re: [ciao-users] saving and loading the state of a component

Douglas C. Schmidt schmidt at dre.vanderbilt.edu
Fri Jul 13 02:07:33 CDT 2007

Hi Folks,

   Although LwCCM and CIAO don't support the persistent container policies
it should be possible to use TAO's Persistent State Service (PSS)
mechanisms to save/restore the state of components.  Please see the
examples of how to do this in TAO_ROOT/orbsvcs/examples/PSS.



> Friedhelm,
> >I'm looking for a way to save the internal state of a CCM component,
> >including component specific data, in order to resume component 
> >operation after restarting a component.
> >I'm aware that there are different types of component containers,
> Yes, if I remember correctly the spec says that there are 4 types of
> containers. I think Light Weight CCM supports only Session containers
> though.
> >which have a certain persistence policy. 
> Yes, though that wouldn't be supported by a Session Container. Thus you
> can't do it with Light Weight CCM.
> >Can you point me to some documentation about that?
> There are none. 
> >Are there any standard mechanisms, which I can use to store the
> >internal state of my components?
> No, not that I'm aware of. If you find out otherwise please let me know.
> >What is the current state of CIAO, concerning such features?
> Again, CIAO is an implementation of Light Weight CCM, thus it doesn't
> have anything regarding persistence.
> Thanks,
> Abdul
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