[RavenclawDev 231] Re: accessing history of concepts from ravenclaw

[Svetlana Stenchikova]

Indeed, this change has affected the application. ravenclaw now
(sometimes) gets in an infinite loop where the agents seem to be
placed and executed (without any effect on the appication). I haven't
been able to figure out what exactly causes it, but when clear()  in
CDialogAgent::Reset() is called it works fine (but I  can not get
history)

I also tried to replace the call to clear() by ClearCurrentValue()
but the history still does not get preserved.

Please suggest if it is possible somehow to maintain the history.

Has anyone ever used this functionality? If you think that this has
not been tested and is not supposed to work, please tell me and I will
stop asking this question.

thank you

Svetlana

On 3/20/07, Svetlana Stenchikova <svetastenchikova at gmail.com> wrote:
> Dear ravenclaw developers,
>
> could someone please help me to figure out how to use the past concepts.
>
> I am trying to get a value for the history (C("the_event")[-1]), but
> it is empty.
>
> It looks like RESET_AGENT command also clears the concepts. My system
> runs in a lookp (like the roomline) and RESET_AGENT is called at the
> end of the loop.
>
> Is this an intended functionality to erase all past values?
> This means that in the next iteration of the dialog (my system is
> iterative) you can not get to the past values)
>
> If I comment out in CDialogAgent::Reset():
>         /*for(unsigned int i = 0; i < Concepts.size(); i++)
>                 Concepts[i]->Clear();*/
>
> this fixes my problem, but I am not sure if it will introduce other problems.
> Please advise on the best solution,
>
> thank you
> Svetlana
>
> On 2/6/07, Svetlana Stenchikova <svetastenchikova at gmail.com> wrote:
> > Hi, I have a question about accessing history of a concept.
> >
> > Is this the right syntax to copy an old concept into a temporary value of
> > the same type:
> > EXECUTE(C("LOCAL_the_old_event") = C("the_event")[-1])
> >
> > It appears to be empty after this command, although "the_event" has had a
> > value before.
> >
> > Could you please suggest what may be a problem? Do I have to do anything
> > explicitly to keep the history of concepts?
> >
> > thanks
> > Svetlana
> >
> >
>