[gme-users] Query regarding BON2 interpreter

[damathai at vt.edu]

Hi Zoltan,

Thanks for the prompt reply.

I did try this. I traced the implementation hierarchy to see if i could pass
BON::Model in place of BON::Connection.

This compiles fine, but gives me a run-time error, saying
"Debug Assertion Failed!"
File: c:\program files\gme\sdk\bon\util.h
Line: 520

If I ignore this error, then it terminates on me saying:
Exception kind : Util Exception
Exception message : Object is null

So i did realise that it is not able to extract the objects (srcEnd and dstEnd
of the transition). And i conclude that this was not the way to do it.

So, do you know as to why i'm having this problem. I am using GME Version
4.11.10 Could that be the problem?...Is this a bug in the tool and has been
fixed now?

Let me know what you think about this.

Thank you,

Regards,
Deepak


Quoting Zoltan Molnar <zolmol at isis.vanderbilt.edu>:

> Hi,
>
> You can just put s0 and s1 instead of srcEnd and dstEnd, because
> BON::Model inherits from BON::ConnectionEnd.
>
> BON::Connection conn;
> conn->create(SM, s0, s1, string("Transition"));
>
> Br, Zoli
>
>
> > -----Original Message-----
> > From: gme-users-bounces at list.isis.vanderbilt.edu
> > [mailto:gme-users-bounces at list.isis.vanderbilt.edu] On Behalf
> > Of damathai at vt.edu
> > Sent: Monday, August 07, 2006 11:46 PM
> > To: gme-users
> > Subject: [gme-users] Query regarding BON2 interpreter
> >
> >
> > Hello there,
> >
> > My name is Deepak Mathaikutty and i'm a frequent user of GME.
> > I would like some help on a problem i'm facing.
> >
> > Here is my question:
> >
> > I'm constructing a finite state machine from my user model
> > created using a metamodel i created in GME. The state machine
> > construction is done through the BON2 interpreter.
> >
> > So i create states which is pretty straight forward :
> >
> > BON::Model s0;
> > s0->create(SM, string("State"));
> > s0->setName(string("STATE0"));
> >
> > BON::Model s1;
> > s1->create(SM, string("State"));
> > s1->setName(string("STATE1"));
> >
> > Assume SM to be the toplevel which acts as the parent for the
> > state machine and State is a <<model>> entity in my metamodel.
> >
> > Now my question is I want to connect these states by creating
> > a transition, which is a <<model>> entity in my metamodel
> >
> > Which would something like this :
> >
> > BON::Connection conn;
> > conn->create(SM, srcEnd, dstEnd, string("Transition"));
> >
> > srcEnd and dstEnd are of type BON::ConnectionEnd.
> >
> > So how to initialize or get srcEnd to point to s0 and dstEnd to s1?
> >
> > I can not find any appropriate APIs to do so.
> >
> > Let me know if i'm not doing it the right way.
> >
> > I will be grateful if someone can help me with this.
> > Basically i want to create a state machine through the
> > interpreter, which requires creating states (this is fine)
> > and transitions, which i'm having problems with.
> >
> > Thank you,
> >
> > Regards,
> > Deepak
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