Replace "= Nothing" with "is Nothing".
-----Original Message-----
From: Styve, Arne [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, June 27, 2001 5:42 AM
To: sven biebaut; roseforum
Subject: RE: (ROSE) REI checking for existance
Hi
Try:
Dim someStateMachine As StateMachine
Set someStateMachine = aClass.StateMachine
If someStateMachine = Nothing Then
......
Does this work ?
Regards
Arne
> -----Original Message-----
> From: sven biebaut [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, June 27, 2001 2:00 PM
> To: roseforum
> Subject: (ROSE) REI checking for existance
>
>
>
> hello all,
>
> Can anyone tell me how to check for the validity of a property in a
> script, f.i. when a REI method returns a class and that class is not
> necessarily there in the model, how do i check this ?
>
> Example :
>
> Sub ProcessStateMachine (aStateMachine As StateMachine)
> End Sub
>
> Sub ProcessClass(aClass As Class)
> ProcessStateMachine aClass.StateMachine
> End Sub
>
> Sub Main
> For i% = 1 To RoseApp.CurrentModel.GetAllClasses().Count
> ProcessClass RoseApp.CurrentModel.GetAllClasses().GetAt(i%)
> Next i%
> End Sub
>
> Here i ask for the statemachine of a class, but not all classes have
> one. How can i check that i only call processStateMachine on
> an existing
> StateMachine.
>
> I tried the other way round, but there is no such thing as a
> 'getallstatemachines' on a rosemodel.
>
> Thanks in advance,
>
> Sven Biebaut
>
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